JP2011088380A - Image forming apparatus, image forming system, and control method of image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a first print out time (FPOT) even if signals for print preparation are almost simultaneously received from a plurality of information processors. <P>SOLUTION: An image forming apparatus 2 connected with a plurality of information processors over a network includes an image forming unit 20 which forms an image based on print data when the print data are received, a control unit 10 which controls the image forming unit 20 to a print-ready state based on a printing mode designation signal when the printing mode designation signal transmitted from one information processor is received, and a printing mode storage unit 13 which brings about a print-ready standby state by storing the printing mode designation signal when the image forming unit 20 is in the print-ready state and the printing mode designation signal transmitted from other information processor is received. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image forming apparatus, an image forming system, and an image forming apparatus control method.

  2. Description of the Related Art Conventionally, in an image forming apparatus such as a printer device, a multi-function peripheral, or an MFP (Multi Function Peripheral), a first printout time (the time from when a print instruction is given until the first page is printed) Various proposals have been made for the purpose of shortening FPOT).

  For example, in Patent Document 1, when a color mode is switched by a user while a printer driver is activated in a computer that transmits print data to the image forming apparatus, the computer notifies the image forming apparatus of the color mode. The The image forming apparatus can shorten the first printout time by preparing for the color mode in advance based on the notification of the color mode.

  Also, for example, in Patent Document 2, the client computer notifies the image forming apparatus of the type of the selected printer driver prior to an instruction to start printing. The image forming apparatus is configured to determine whether the notified printer driver type is for color printing or monochrome printing, and to perform a switching operation prior to the start of the printing process.

JP 2005-94698 A JP 2009-75351 A

  Incidentally, recent image forming apparatuses are used in a state of being connected to a network, and can receive a print instruction from each of a plurality of computers connected to the network. Under such usage conditions, the image forming apparatus may receive color mode notification and printer driver type notification from a plurality of computers almost simultaneously. However, since the conventional image forming apparatus described above does not consider receiving notifications from a plurality of computers almost simultaneously, the following problem occurs.

  For example, when the user A activates the printer driver and selects the full color mode in order to perform printing output by operating his computer, the user A's computer notifies the image forming apparatus of the full color mode. Is done. As a result, the image forming apparatus starts preparations for printing in the full color mode. Thereafter, before the user A gives a print instruction, when another user B selects the gray scale mode (monochrome mode) by operating his / her computer, the user B's computer changes to the image forming apparatus accordingly. Notification of grayscale mode is performed. Therefore, the print preparation state of the image forming apparatus is switched from the full color mode to the gray scale mode. Immediately after this, when user A operates his / her computer to give a print instruction, the image forming apparatus is in a state of preparing for printing in the gray scale mode. Accordingly, the print output is started after the preparation operation for printing in the full color mode is performed again. Therefore, in this case, the preparatory operation performed until the print data is received does not function effectively, and as a result, there is a problem that the first printout time (FPOT) cannot be shortened.

  Therefore, the present invention has been made to solve the above-described conventional problems, and the first printout time can be shortened even when signals for preparing for printing are received almost simultaneously from a plurality of computers. An image forming apparatus, an image forming system, and a method for controlling the image forming apparatus are provided.

  In order to achieve the above object, an invention according to claim 1 is an image forming apparatus connected to a plurality of information processing apparatuses via a network, and receives data from each of the plurality of information processing apparatuses via the network. When the print data is received by the data receiving means to be received, the image forming means for forming an image based on the print data, and the data receiving means transmitted by one information processing apparatus When a print mode designation signal is received, a control unit that controls the image forming unit to a print ready state based on the print mode designation signal; and the data reception when the image forming unit is in a print ready state When a print mode designation signal transmitted from another information processing apparatus is received by the means, the print mode designation signal is stored. And print mode storage means to 備待 machine state, a structure characterized in that it comprises a.

  According to a second aspect of the present invention, in the image forming apparatus according to the first aspect of the present invention, the image forming apparatus further includes a timer measuring unit that measures an elapsed time after the image forming unit is controlled to be in a print ready state. The print preparation state of the image forming unit is continued until the elapsed time measured by the timer measuring unit reaches a predetermined time.

  According to a third aspect of the present invention, in the image forming apparatus according to the second aspect, the control unit stores the print mode storage unit when the elapsed time measured by the timer measurement unit reaches a predetermined time. The print mode designation signal is read out, and the print preparation state of the image forming means is changed in response to the print mode designation signal.

  According to a fourth aspect of the present invention, in the image forming apparatus according to the third aspect, the print preparation state of the image forming unit is determined by the control unit based on a print mode designation signal stored in the print mode storage unit. When changed, the timer measuring means measures the elapsed time from the timing when the print mode designation signal is stored in the print mode storage means.

  According to a fifth aspect of the present invention, in the image forming apparatus according to any one of the second to fourth aspects, the control unit causes the data until the elapsed time measured by the timer measuring unit reaches a predetermined time. When the receiving unit receives another print mode designation signal transmitted from the one information processing apparatus, the print preparation state of the image forming unit is changed based on the received print mode designation signal. It is the structure to do.

  According to a sixth aspect of the present invention, in the image forming apparatus according to any one of the second to fifth aspects, the control unit causes the data until the elapsed time measured by the timer measuring unit reaches a predetermined time. When the reception unit receives the cancel signal transmitted from the one information processing apparatus, the print mode designation signal stored in the print mode storage unit is read, and the image formation is performed in correspondence with the print mode designation signal. The print preparation state of the means is changed.

  According to a seventh aspect of the present invention, in the image forming apparatus according to any one of the second to sixth aspects, the control unit causes the data until the elapsed time measured by the timer measuring unit reaches a predetermined time. When the reception unit receives a specific print mode designation signal transmitted from the one information processing apparatus, the print mode designation signal stored in the print mode storage unit is read out and read out from the print mode storage unit The print preparation state of the image forming unit is changed in response to a print mode designation signal.

  According to an eighth aspect of the present invention, in the image forming apparatus according to any one of the second to seventh aspects, the data receiving unit can receive a plurality of types of print mode designation signals from each of the plurality of information processing apparatuses. And when the image forming unit is controlled to be in a print ready state based on a print mode designation signal, the control unit changes a value for a predetermined time according to the type of the print mode designation signal. It is a configuration.

  According to a ninth aspect of the present invention, in the image forming apparatus according to any one of the second to eighth aspects, the control unit causes the data until the elapsed time measured by the timer measuring unit reaches a predetermined time. When the receiving unit receives the print mode determination signal transmitted from the one information processing apparatus, the elapsed time measured by the timer measuring unit is reset.

  According to a tenth aspect of the present invention, in the image forming apparatus according to any one of the second to ninth aspects, the control unit includes the data until the elapsed time measured by the timer measuring unit reaches a predetermined time. If the receiving unit receives a print mode determination signal from the other information processing apparatus without receiving the print mode determination signal from the one information processing apparatus, the reception unit is configured to receive the print mode determination signal based on the received print mode determination signal. The print preparation state of the image forming unit is changed, and the elapsed time measured by the timer measuring unit is reset.

  The invention according to claim 11 is an image forming apparatus connected to a plurality of information processing apparatuses via a network, and a data receiving means for receiving data from each of the plurality of information processing apparatuses via the network When print data is received by the data receiving means, an image forming means for forming an image based on the print data and a print mode designation signal transmitted by one information processing apparatus are received by the data receiving means. Control means for controlling the image forming means to a print ready state based on the print mode designation signal, and when the control means controls the image forming means to the print ready state, at least The print preparation state is continued until a predetermined time elapses.

  According to a twelfth aspect of the present invention, there is provided an image forming system in which a plurality of information processing apparatuses and an image forming apparatus are connected via a network so that data communication can be performed. An operation input means for accepting a print mode designation operation by a print mode designation signal transmitting means for sending a print mode designation signal to the image forming apparatus each time a print mode is designated via the operation input means; And a print data transmitting unit that transmits print data to the image forming apparatus when a print instruction is given via the operation input unit, and the image forming apparatus includes the plurality of information processing units. A data receiving means for receiving data from each of the devices, and when the print data is received by the data receiving means, based on the print data; When an image forming unit that forms an image and a print mode designating signal transmitted from one of the plurality of information processing devices are received by the data receiving unit, based on the print mode designating signal Control means for controlling the image forming means to a print ready state, and when the image forming means is in a print ready state, the data receiving means transmits another information processing device among the plurality of information processing devices. And a print mode storage means for storing the print mode designation signal when it is received, and setting the standby state by storing the print mode designation signal.

  The invention according to claim 13 is a method of controlling an image forming apparatus connected to a plurality of information processing apparatuses via a network, and receives data transmitted from each of the plurality of information processing apparatuses via the network. And, when a print mode designation signal transmitted by one information processing apparatus via the network is received, controlling the image forming apparatus to a print ready state based on the print mode designation signal; When the image forming apparatus is in a print preparation state, when a print mode designation signal transmitted from another information processing apparatus is received via the network, the print mode designation signal is stored in a predetermined storage unit. And a step of setting the standby state by this.

  According to the present invention, when the image forming unit is in the print preparation state, when the print mode designation signal transmitted by another information processing apparatus is received, the standby state is stored by storing the received print mode designation signal. And Therefore, even when the image forming apparatus receives signals for preparing for printing from a plurality of computers almost simultaneously, it is possible to prevent the print preparation state of the image forming apparatus from being frequently changed. As a result, the print preparation operation performed until the print data is received can be effectively functioned, and the first printout time (FPOT) can be shortened.

1 is a diagram illustrating a configuration example of an image forming system. 2 is a block diagram illustrating an example of a hardware configuration of an image forming apparatus. FIG. It is a figure which shows one structural example of an image formation part. It is a block diagram which shows an example of the hardware constitutions of information processing apparatus. It is a figure which shows an example of the display screen displayed when a driver program is started in information processing apparatus. FIG. 10 is a diagram illustrating an example when the image forming apparatus receives print mode designation signals from a plurality of information processing apparatuses almost simultaneously. It is a figure which shows an example of the printing mode standby information memorize | stored in a printing mode memory | storage part. 5 is a flowchart illustrating an example of a main processing procedure in the image forming apparatus. 6 is a flowchart illustrating an example of a detailed processing procedure of a print preparation start process. 6 is a flowchart illustrating an example of a detailed processing procedure of a print preparation change process. 10 is a flowchart illustrating an example of a detailed processing procedure of a print preparation cancellation process. FIG. 4 is a diagram illustrating an example of a print processing mode in a case where print data is received before a predetermined time elapses after the image forming apparatus receives a print mode designation signal from one information processing apparatus in the first embodiment. . An example of a print processing mode in the case where the image forming apparatus receives print data from another information processing apparatus after a predetermined time has elapsed since the image forming apparatus received the print mode designation signal from one information processing apparatus in the first embodiment FIG. The print processing mode in the case where the image forming apparatus receives print data from another information processing apparatus after receiving the cancel signal after the image forming apparatus receives the print mode designation signal from one information processing apparatus in the first embodiment. It is a figure which shows an example. It is a block diagram which shows the example of 1 structure of the information processing apparatus in 2nd Embodiment. 6 is a diagram illustrating an example of a case where the image forming apparatus sequentially receives a print mode designation signal and a print mode determination signal from a plurality of information processing apparatuses. FIG. 10 is a flowchart illustrating an example of a main processing procedure performed in the image forming apparatus according to the second embodiment. 6 is a flowchart illustrating an example of a detailed processing procedure of a print preparation confirmation process. Print processing in the case where the image forming apparatus receives a print mode determination signal from another information processing apparatus before a predetermined time elapses after the image forming apparatus receives the print mode designation signal from one information processing apparatus in the second embodiment It is a figure which shows an example of a form. FIG. 10 is a diagram illustrating an example of a printing process when an image forming apparatus receives a print mode determination signal from another information processing apparatus after the image forming apparatus receives the print mode determination signal from one information processing apparatus in the second embodiment. .

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments described below, members that are common to each other are denoted by the same reference numerals, and redundant descriptions thereof are omitted.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration example of an image forming system 1 according to the present embodiment. This image forming system 1 has a configuration in which an image forming apparatus 2 called a multifunction peripheral or MFP and a plurality of information processing apparatuses 3 are connected to each other via a network 4 such as a LAN so as to be able to perform data communication with each other.

  The image forming apparatus 2 performs image formation based on print data received from each of the plurality of information processing apparatuses 3 and performs print output. At this time, the image forming apparatus 2 performs image formation corresponding to the print mode designated by each of the plurality of information processing apparatuses 3. For example, when the full color mode is designated, a full color image is formed on the printing paper and output. When the gray scale mode (monochrome mode) is designated, the gray scale mode image is formed on the printing paper and output.

  Each of the plurality of information processing apparatuses 3 is configured by, for example, a general personal computer (PC), and is assigned to one user, for example. In the illustrated example, a plurality of information processing apparatuses 3 are configured by four information processing apparatuses 3a, 3b, 3c, and 3d. A printer driver (driver program) for transmitting print data to the image forming apparatus 2 is installed in advance in each of the four information processing apparatuses 3a, 3b, 3c, and 3d. Note that the number of information processing apparatuses 3 connected to the network 4 is not limited to four.

  FIG. 2 is a block diagram showing an internal configuration of the image forming apparatus 2. The image forming apparatus 2 includes a control unit 10, a print mode storage unit 13, a timer measurement unit 15, a network interface 16, a hard disk device 17, an operation panel 18, an image reading unit 19, and an image forming unit 20. These are configured such that data can be input and output mutually via the data bus 22.

  The control unit 10 includes a CPU 11 and a memory 12. The CPU 11 is a processing unit that controls each unit by executing a program. The memory 12 is for temporarily storing data necessary for the CPU 11 to execute the program. The print mode storage unit 13 is composed of, for example, a semiconductor memory and stores print mode standby information 14 described later. The timer measurement unit 15 starts a timer measurement operation based on a command from the control unit 10.

  The network interface 16 is for connecting the network 4. The image forming apparatus 2 performs data communication with each of the information processing apparatuses 3a, 3b, 3c, and 3d via the network interface 16. The hard disk device 17 is for storing various data and programs. The hard disk device 17 stores a program 17a executed by the CPU 11, for example.

  The operation panel 18 is a user interface when the user operates the image forming apparatus 2, and includes a display unit 18a for displaying various information and an input unit 18b for performing various operations by the user. The image reading unit 19 is a processing unit that reads a document and generates image data.

  The image forming unit 20 is a processing unit that forms an image on a printing paper by, for example, an electrophotographic method. As described above, the image forming unit 20 forms an image corresponding to the designated print mode.

  FIG. 3 is a diagram illustrating a configuration example of the image forming unit 20. The image forming unit 20 has a configuration capable of forming a tandem color image, and includes a transfer belt 31 suspended between the driving roller 32 and the secondary transfer roller 35, and Y (yellow) and M (magenta). ), C (cyan), K (black) corresponding to the photoreceptors 34Y, 34M, 34C, 34K, and toner images formed on the photoreceptors 34Y, 34M, 34C, 34K, respectively. Transferred to the printing paper by the primary transfer rollers 33Y, 33M, 33C, and 33K for primary transfer, a transport roller 36 that transports the printing paper toward the secondary transfer roller 35, and the secondary transfer roller 35. And a fixing unit 37 for fixing the toner image.

  The drive roller 32 is rotationally driven by the motor M1, thereby circulating and moving the transfer belt 31 in the direction indicated by the arrow F1 in the drawing. When the printing paper is fed by a paper feeding roller (not shown), the printing paper is conveyed along the direction indicated by an arrow F2 in the drawing, and finally discharged to the outside of the apparatus.

  Here, as shown in FIG. 3A, the primary transfer rollers 33Y, 33M, and 33C can advance and retreat in the contact / separation direction with respect to the opposing photoconductors 34Y, 34M, and 34C, respectively. When the full color mode is designated, as shown in FIG. 3A, the primary transfer rollers 33Y, 33M, and 33C are pressed against the photoconductors 34Y, 34M, and 34C, so that the transfer belt 31 has four. It is assumed that all the color photoreceptors 34Y, 34M, 34C, and 34K are in pressure contact. On the other hand, when the gray scale mode is designated, as shown in FIG. 3B, the primary transfer rollers 33Y, 33M, and 33C are retracted from the photosensitive members 34Y, 34M, and 34C, thereby transferring the transfer belt 31. However, it is assumed that only the black photosensitive member 34K is in pressure contact. Accordingly, it is possible to prevent the photoconductors 34Y, 34M, and 34C from being consumed during image formation in the gray scale mode. Such driving of the primary transfer rollers 33Y, 33M, and 33C is performed as a preparatory operation before the image forming apparatus 2 receives print data. Accordingly, in the image forming unit 20, the preparatory operation before image formation is different according to the designated print mode.

  In addition, the fixing temperature controlled by the fixing unit 37 is different between the full color mode and the gray scale mode. For example, due to the difference in toner fixing characteristics between color toner and black toner, in general, when image formation is performed in the full color mode, the fixing temperature is higher than when image formation is performed in the gray scale mode. Set to Furthermore, when starting image formation, it is necessary to stably drive the transfer belt 31 at an optimum speed in accordance with the designated print mode.

  In the image forming system 1 of the present embodiment, each information processing is performed in order to shorten the first printout time (FPOT) from when the image forming apparatus 2 receives the print data until the printing of the first page is completed. When the driver program is activated in the apparatuses 3a, 3b, 3c, and 3d, the default value of the print mode is transmitted to the image forming apparatus 2 as a print mode designation signal at that timing. When each user performs an operation to change the print mode by operating the information processing apparatuses 3a, 3b, 3c, and 3d, the value at which the print mode is changed is used as the print mode designation signal at the timing. 2 is transmitted. When the image forming apparatus 2 receives the print mode designation signal before receiving the print data from the information processing apparatuses 3a, 3b, 3c, and 3d, the image forming apparatus 2 promptly forms an image in the designated print mode based on the received signal. The image forming unit 20 prepares for printing so that printing can be started. The print preparation operation of the image forming unit 20 is controlled by the control unit 10.

  Here, the information processing apparatuses 3a, 3b, 3c, and 3d will be described. FIG. 4 is a block diagram illustrating a configuration example of the information processing apparatus 3. The information processing apparatus 3 includes a CPU 40, a network interface 51, a display unit 52, an operation input unit 53, a memory 54, and a hard disk device 55, which mutually input and output data via the data bus 50. It is the structure which can perform. The CPU 40 is an arithmetic processing unit that executes various programs. The network interface 51 is for connecting to the network 4. The display unit 52 is a display unit configured with, for example, a liquid crystal display. The operation input unit 53 includes a keyboard, a mouse, and the like, and is a means for inputting various signals corresponding to the operation when operated by the user. The memory 54 is composed of, for example, a semiconductor memory, and temporarily stores data required when the CPU 40 executes the program. The hard disk device 55 is for storing various data and programs. In the hard disk device 55, a driver program 55a for transmitting print data to the image forming apparatus 2 is installed in advance.

  The CPU 40 functions as a print mode designation signal transmission unit 41, a cancel signal transmission unit 42, and a print data transmission unit 43 as shown in FIG. 4 by starting the driver program 55a. The print mode designation signal transmission unit 41 is a processing unit that transmits a print mode designation signal to the image forming apparatus 2. The print mode designation signal transmission unit 41 functions to transmit a print mode designation signal when the driver program is activated and whenever the user performs an operation for changing the print mode. The cancel signal transmission unit 42 is a processing unit that functions when an operation for canceling the print mode designated by the user is performed and transmits a cancel signal to the image forming apparatus 2. Further, the print data transmission unit 43 functions when a user issues a print instruction, generates print data based on document data, image data, or the like designated as a print target, and sends the print data to the image forming apparatus 2. Is a processing unit that transmits. This print data includes designation of a print mode.

  Further, the CPU 40 activates the driver program 55a to display the display screens G1 and G2 as shown in FIGS. 5A and 5B on the display unit 52. The user can designate a desired print mode by operating the operation input unit 53 while referring to these display screens G1 and G2. This will be described in detail below.

  First, when the CPU 40 starts up the driver program 55a, a display screen G1 as shown in FIG. At this time, the CPU 40 functions as a print mode designation signal transmission unit 41 and transmits a print mode designation signal corresponding to the default value of the print mode to the image forming apparatus 2. In addition, a printer name display field 81 for displaying a printer name corresponding to the image forming apparatus 2 is displayed on the display screen G1 displayed at this time. On the right side of the printer name display field 81, a property button 82 that is operated when changing the print mode or the like is displayed. For example, when the user operates the operation input unit 53 and performs a click operation in a state where the pointer image MP is moved to the property button 82, the screen displayed on the display unit 52 is the display shown in FIG. The screen G1 is switched to the display screen G2 in FIG.

  The display screen G2 in FIG. 5B has a screen configuration that allows the user to perform various print mode setting operations. The display screen G1 includes a basic setting tab 90 that is selected when changing the basic settings for printing, an image quality setting tab 91 that is selected when changing the image quality settings for printing, and a layout setting for printing. A layout tab 92 to be selected when performing, a finishing tab 93 to be selected when changing the finishing setting at the time of printing, and another tab 94 to be selected when changing other settings are displayed. In the example shown in the figure, the state where the image quality setting tab 91 is selected is displayed. When the image quality setting tab 91 is selected, the color selection can be changed as shown in FIG. . The color selection display field 86 displays the currently selected color mode. A pull-down button 87 is displayed at the right end of the color selection display field 86. For example, when the user clicks the pull-down button 87, a pull-down menu 88 that lists a plurality of color modes is displayed. . The user can designate a desired print mode by selecting a desired color mode from the list display. In the example shown in the figure, the full color 89 is designated.

  When the user designates the full color 89 in this way, at that timing, the CPU 40 functions as a print mode designation signal transmission unit 41 and transmits a print mode designation signal to the image forming apparatus 2. The print mode designation signal transmitted at this time includes a signal indicating that full color is designated. After that, when the user clicks on the pull-down button 87 again to change the gray scale from the pull-down menu 88, a print mode designation signal indicating that the gray scale has been designated is generated. Transmitted to the device 2.

  When the designation of all print modes is completed, the user clicks the OK button 95 displayed at the bottom of the display screen G2. Then, the screen displayed on the display unit 52 returns from the display screen G2 in FIG. 5B to the display screen G1 in FIG.

  Further, when canceling designation of all print modes, the user clicks a cancel button 96 displayed at the bottom of the display screen G2. Also in this case, the screen displayed on the display unit 52 returns from the display screen G2 in FIG. 5B to the display screen G1 in FIG. At this time, the CPU 40 functions as a cancel signal transmission unit 42 and transmits a cancel signal to the image forming apparatus 2.

  When the user issues a print instruction, the user operates an OK button 83 displayed at the bottom of the display screen G1 in FIG. Then, the CPU 40 functions as the print data transmission unit 43, generates print data corresponding to the designated print mode, and transmits it to the image forming apparatus 2. On the other hand, when the activation state of the driver program 55a is terminated without issuing a print instruction, the cancel button 84 displayed at the bottom of the display screen G1 is operated.

  As described above, the information processing apparatus 3 transmits the print data to the image forming apparatus 2 at the timing when the driver program 55a is activated and the timing when the user designates the print mode. A print mode designation signal is transmitted. Therefore, the image forming apparatus 2 can receive a print mode designation signal from the information processing apparatus 3 before receiving print data. Therefore, when the printing mode designation signal is received in the image forming apparatus 2, the control unit 10 described above controls the image forming unit 20 based on the printing mode designation signal, so that the print data is received prior to reception. Then, the image forming unit 20 is shifted to the print preparation state.

  However, the above-described print mode designation signal may be transmitted almost simultaneously from each of the plurality of information processing apparatuses 3a, 3b, 3c, and 3d. FIG. 6 is a diagram illustrating an example in which a plurality of information processing apparatuses 3 a, 3 b, 3 c, 3 d transmit a print mode designation signal D 1 to the image forming apparatus 2 almost simultaneously. In this case, the image forming apparatus 2 continuously receives the print mode designation signal D1 transmitted from each of the information processing apparatuses 3a, 3b, 3c, and 3d. Therefore, in the present embodiment, the control unit 10 in the image forming apparatus 2 frequently switches the print preparation state of the image forming unit 20 based on the print mode designation signal D1 continuously received from different information processing apparatuses 3. The operation of each unit of the image forming apparatus 2 is controlled so as not to occur. This will be described in detail below.

  Reference is again made to FIG. When receiving various signals and data via the network interface 16, the control unit 10 specifies which of the plurality of information processing apparatuses 3a, 3b, 3c, and 3d is the transmission source of the signals and data. be able to. For example, when data communication is performed in a network configuration as shown in FIG. 1, the signal and data received by the control unit 10 include the IP address of the transmission source. Therefore, the control unit 10 specifies which of the plurality of information processing devices 3a, 3b, 3c, and 3d is the transmission source using the IP address or the like as identification information.

  When the control unit 10 receives the print mode designation signal D1 from one information processing apparatus 3 while the image forming unit 20 is in the standby state, the control unit 10 determines the state of the image forming unit 20 based on the received print mode designation signal D1. Is controlled from the standby state to the print ready state. Along with this, the control unit 10 starts the timer measurement operation by the timer measurement unit 15 until the elapsed time after the image forming unit 20 is controlled to the print preparation state reaches a predetermined time (for example, 30 seconds). Continue the print ready state.

  The control unit 10 changes the print preparation state based on the received print mode designation signal D1 only when the print mode designation signal D1 is received from the same information processing apparatus 3 until the predetermined time elapses. To do. On the other hand, when the print mode designation signal D1 is received from another information processing apparatus 3 until the predetermined time elapses, the control unit 10 does not change the print preparation state of the image forming unit 20 and receives the received print. By recording the mode designation signal D1 in the print mode standby information 14 stored in the print mode storage unit 13, the standby state is set.

  FIG. 7 is a diagram illustrating an example of the print mode standby information 14 stored in the print mode storage unit 13. As shown in FIG. 7, the print mode standby information 14 includes a number 14a indicating the order received by the control unit 10, identification information 14b for specifying the transmission source of the received print mode designation signal D1, and the received print The mode designation information 14c included in the mode designation signal D1 and the timer count value 14d of the timer measuring unit 15 at the timing when the print mode designation signal D1 is received are recorded. By recording these information in the print mode standby information 14, the print mode received from the other information processing apparatus 3 before the predetermined time elapses after the image forming unit 20 is controlled to the print preparation state. Printing preparation based on the designation signal D1 can be suspended.

  Then, the control unit 10 controls the image forming unit 20 to the print preparation state based on the print mode designation signal D1 received from the one information processing apparatus 3, and until the predetermined time elapses. When the print data is received from the information processing apparatus 3, the image forming unit 20 is driven and controlled based on the print data, thereby starting image formation based on the received print data and executing a print job. At this time, since the print preparation operation in the image forming unit 20 has already been completed, the first printout time (FPOT) from when print data is received until the first page is printed can be shortened. .

  When the execution of the print job based on the print data is completed, the control unit 10 reads out the print mode designation signal D1 having the reception order first from the print mode designation signals D1 recorded in the print mode standby information 14. Based on the read print mode designation signal D1, the image forming unit 20 is controlled to a print preparation state. Accordingly, the control unit 10 resets the count value by the timer measurement unit 15 and then starts the timer measurement operation again, and the elapsed time after the image forming unit 20 is controlled to the print preparation state is a predetermined time (for example, The print ready state is continued until 30 seconds).

  In addition, the control unit 10 controls the image forming unit 20 to the print preparation state based on the print mode designation signal D1 received from the one information processing apparatus 3 until the predetermined time elapses. When the cancel signal is received from the information processing apparatus 3, the print mode designation signal D 1 that is received first is read out of the print mode designation signals D 1 recorded in the print mode standby information 14, and is read out. The print preparation state of the image forming unit 20 is changed based on the print mode designation signal D1. That is, when a predetermined time elapses after the image forming unit 20 is controlled to the print preparation state designated by the one information processing apparatus 3, the print preparation state designated by the one information processing apparatus 3 is canceled and the other To the print preparation state designated by the information processing apparatus 3. Accordingly, the control unit 10 resets the count value of the timer measurement unit 15 and then starts the timer measurement operation again, and the elapsed time since the print preparation state of the image forming unit 20 is changed is a predetermined time (for example, The print ready state is continued until 30 seconds). Note that the contents of the print preparation state released at this time may be recorded in the print mode standby information 14 so as to be registered as the preparation standby state.

  As described above, when the image forming apparatus 2 of the present embodiment receives the print mode designation signal D1 from one of the plurality of information processing apparatuses 3, the image forming apparatus 2 is based on the received print mode designation signal D1. The image forming unit 20 is shifted to the print preparation state, and the print preparation state designated by the one information processing apparatus 3 is continued until at least a predetermined time has elapsed after the shift to the print preparation state. Composed. Further, when the print mode designation signal D1 is received from another information processing apparatus 3 after the transition to the print preparation state until a predetermined time elapses, the received print mode designation signal D1 is ignored. The received print mode designation signal D1 is held as the next print preparation target instead of being discarded or discarded. Hereinafter, the operation of the image forming apparatus 2 will be described in detail.

  8 to 11 are flowcharts illustrating an example of a processing procedure in the image forming apparatus 2. This process is performed by the CPU 11 of the control unit 10 reading and executing the program 17a, for example.

  First, as shown in FIG. 8, when the image forming apparatus 2 is powered on, the control unit 10 puts the image forming unit 20 in a standby state (step S101). Then, the control unit 10 determines whether or not the print mode designation signal D1 has been received via the network interface 16 (step S102). When the print mode designation signal D1 is received (YES in step S102), the control unit 10 executes a print preparation start process (step S103). On the other hand, if the print mode designation signal D1 has not been received (NO in step S102), step S103 is skipped and the process proceeds to step S104.

  Next, the control unit 10 determines whether or not the timer count value measured by the timer measurement unit 15 has passed a predetermined time (step S104). Here, the timer measurement unit 15 is performing a measurement operation, and when the timer count value thereby has passed a predetermined time, YES is determined. On the other hand, if the timer measurement unit 15 is not performing a measurement operation, or if the timer count value being measured has not reached the predetermined time, the determination is NO. If the timer count value has passed the predetermined time (YES in step S104), the control unit 10 executes a print preparation change process (step S105). On the other hand, if the timer count value has not passed the predetermined time (NO in step S104), step S105 is skipped and the process proceeds to step S106.

  Next, the control unit 10 determines whether or not a cancel signal has been received via the network interface 16 (step S106). If a cancel signal has been received (YES in step S106), the control unit 10 executes a print preparation cancel process (step S107). On the other hand, if the cancel signal has not been received (NO in step S106), step S107 is skipped and the process proceeds to step S108.

  Next, the control unit 10 determines whether print data has been received via the network interface 16 (step S108). If print data has been received (YES in step S108), the control unit 10 starts drive job execution by starting drive control of the image forming unit 20 based on the received print data (step S108). S109). As a result, the image forming unit 20 enters a print job execution state. On the other hand, if print data has not been received (NO in step S108), step S109 is skipped. Thereafter, the process executed by the control unit 10 returns to step S102, and the above-described process is repeated.

  FIG. 9 is a flowchart illustrating an example of a detailed processing procedure of the print preparation start process (step S103 in FIG. 8). When the control unit 10 receives the print mode designation signal D1, the control unit 10 determines whether or not the image forming unit 20 is in a standby state (step S110). If the image forming unit 20 is in a standby state (YES in step S110), the image forming unit 20 is controlled to a print preparation state based on the received print mode designation signal D1 (step S111).

  For example, if full color is designated by the received print mode designation signal D1, the primary transfer rollers 33Y, 33M, and 33C are driven to press the photoreceptors 34Y, 34M, and 34C as shown in FIG. By doing so, the transfer belt 31 is brought into pressure contact with the photoconductors 34Y, 34M, 34C, 34K of all four colors. Further, the temperature of the fixing unit 37 is raised to a temperature corresponding to the full color mode, and the motor M1 is previously set so that the speed of the transfer belt 31 becomes a constant speed so that image formation can be performed promptly when print data is received. Keep driving.

  On the other hand, if the gray scale is designated by the received print mode designation signal D1, the primary transfer rollers 33Y, 33M, 33C are driven as shown in FIG. By separating from 34C, the transfer belt 31 is brought into pressure contact only with the photoconductor 34K. Further, the temperature of the fixing unit 37 is raised to a temperature corresponding to the gray scale mode, and a motor is previously set so that the speed of the transfer belt 31 becomes a constant speed so that image formation can be performed promptly when print data is received. M1 is driven.

  When starting the control for shifting to the print preparation state as described above, the control unit 10 next sets the measurement time for continuing the print preparation state to a predetermined time (step S112). Here, the predetermined time is set to 30 seconds, for example. And the control part 10 starts the timer measurement operation | movement by the timer measurement part 15 (step S113).

  On the other hand, when the image forming unit 20 is not in the standby state when the print mode designation signal D1 is received (NO in step S110), the control unit 10 further determines whether or not the image forming unit 20 is in the print preparation state. Judgment is made (step S114). If the image forming unit 20 is in the print ready state (YES in step S114), the identification information (for example, IP address) included in the received print mode designation signal D1 is determined (step S115), and the print ready state is set. It is determined whether the reception is from the same apparatus as the information processing apparatus 3 that has transmitted the mode designation signal D1 (step S116). If the print mode designation signal D1 received this time is reception from the same apparatus (YES in step S116), the control unit 10 controls the print preparation state of the image forming unit 20 based on the received print mode designation signal D1. (Step S117). Here, since the print mode designation signal D1 received this time designates a print mode different from the print mode designation signal D1 received last time, the print preparation status of the image forming unit 20 is displayed as the print mode designation signal D1 received this time. A process for changing the print mode to match the print mode specified in is performed. When the print preparation state change control is started, the control unit 10 once resets the measurement operation of the timer measurement unit 15 in order to continue the print preparation state for a predetermined time, and then starts the measurement operation again (step S118). . Therefore, in a state where the print preparation state is based on the print mode designation signal D1 received from the one information processing apparatus 3, a print mode designation signal D1 in which a different print mode is designated from the one information processing apparatus 3 thereafter. Whenever is received, the control unit 10 changes the print preparation state each time and continues the print preparation state until a predetermined time elapses after the change.

  If the print mode designation signal D1 received this time is not received from the same apparatus (NO in step S116), the control unit 10 uses the received print mode designation signal D1 as print mode standby information in the print mode storage unit 13. 14 (step S119). Accordingly, when the print mode designation signal D1 is received from another information processing apparatus 3 in the print preparation state, the print mode designation signal D1 is registered in the print mode standby information 14 as a preparation standby state.

  Further, when the image forming unit 20 is not in a print ready state when the print mode designation signal D1 is received (NO in step S114), the image forming unit 20 enters a print job execution state. That is, in this case, the image forming apparatus 2 is executing a print job, and the image forming unit 20 cannot be set in a print preparation state. Therefore, the control unit 10 stores the received print mode designation signal D1 in the print mode standby information 14 of the print mode storage unit 13 (step S120). Accordingly, when the print mode designation signal D1 is received from another information processing apparatus 3 during execution of the print job, the print mode designation signal D1 is registered in the print mode standby information 14 as a preparation standby state.

  Next, FIG. 10 is a flowchart illustrating an example of a detailed processing procedure of the print preparation change process (step S105 in FIG. 8). When the timer count value measured by the timer measurement unit 15 has passed the predetermined time, the control unit 10 first resets the timer measurement operation by the timer measurement unit 15 (step S131). Then, the print mode standby information 14 stored in the print mode storage unit 13 is read out, and it is determined whether or not there is mode designation information 14c registered as a preparation standby state (step S132). As a result, when the mode designation information 14c in the ready standby state is stored (YES in step S132), among the information stored in the print mode standby information 14, the image forming apparatus 2 receives the earliest one. The mode designation information 14c is read (step S133). Based on the read print mode designation signal D1 (mode designation information 14c), the print preparation state of the image forming unit 20 is changed (step S134). As a result, the print preparation state of the print mode designated by one information processing apparatus 3 is canceled, and the print preparation state of the print mode designated by another information processing apparatus 3 is changed.

  Then, the control unit 10 reads the timer count value 14d included in the print mode standby information 14 (Step S135). The timer count value 14d read at this time is a value stored in correspondence with the print mode designation signal D1 (mode designation information 14c) read in step S133. And the control part 10 sets measurement time based on the timer count value (step S136). Here, the measurement time is set so that the elapsed time after receiving the print mode designation signal D1 becomes a predetermined time (for example, 30 seconds). For example, when the print preparation state is controlled based on the first mode designation information 14c shown in FIG. 7, “5 seconds” is recorded in the timer count value 14d. In this case, since the previous print preparation state has passed a predetermined time (30 seconds), 25 seconds have already passed since the corresponding print mode designation signal D1 was received. In this case, the control unit 10 sets the measurement time by the timer measurement unit 15 to 5 seconds. That is, when the control unit 10 changes the print preparation state of the image forming unit 20 based on the print mode designation signal D1 stored in the print mode storage unit 13, the corresponding print mode designation signal D1 is stored in the print mode. The timer measurement unit 15 is caused to measure the elapsed time from the timing stored in the unit 13. Thereby, the print preparation state in the image forming apparatus 2 can be unified so as to continue until a predetermined time elapses after the corresponding print mode designation signal D1 is received, and the information processing apparatuses 3a and 3b can be unified. , 3c, 3d can be handled equally.

  When the setting of the measurement time based on the timer count value is completed as described above, the control unit 10 starts the timer measurement operation by the timer measurement unit 15 (step S137).

  On the other hand, when the mode designation information 14c registered as the preparation standby state does not exist in the print mode standby information 14 stored in the print mode storage unit 13 (NO in step S132), the control unit 10 performs image formation. The unit 20 is shifted to the standby state.

  Next, FIG. 11 is a flowchart illustrating an example of a detailed processing procedure of the print preparation canceling process (step S107 in FIG. 8). When receiving the cancel signal, the control unit 10 determines the identification information (for example, IP address) included in the received cancel signal (step S141), and transmits the print mode designation signal D1 in the print preparation state. It is determined whether or not the reception is from the same device as the device 3 (step S142). If the reception is from the same apparatus (YES in step S142), the print mode standby information 14 stored in the print mode storage unit 13 is read, and whether there is mode designation information 14c registered as a preparation standby state. Is determined (step S143). As a result, when the mode designation information 14c in the preparation standby state is stored (YES in step S143), one of the information stored in the print mode standby information 14 that is received first by the image forming apparatus 2 is displayed. The mode designation information 14c is read (step S144). Then, based on the read printing mode designation signal D1 (mode designation information 14c), the printing preparation state of the image forming unit 20 is changed (step S145). As a result, the print preparation state of the print mode designated by one information processing apparatus 3 is canceled, and the print preparation state of the print mode designated by another information processing apparatus 3 is changed. Then, the control unit 10 reads the timer count value 14d included in the print mode standby information 14, and sets the measurement time based on the read timer count value 14d (step S146). Here, as described above, the measurement time is set so that the elapsed time after receiving the print mode designation signal D1 becomes a predetermined time (for example, 30 seconds). And the control part 10 starts the timer measurement operation | movement by the timer measurement part 15 (step S147).

  On the other hand, when the mode designation information 14c registered as the preparation standby state does not exist in the print mode standby information 14 stored in the print mode storage unit 13 (NO in step S143), the control unit 10 performs image formation. The unit 20 is shifted to the standby state.

  If the received cancel signal is not received from the same device (NO in step S142), the control unit 10 includes the mode designation information registered in the print mode standby information 14 based on the received cancel signal. The information to be deleted is identified from the information, and the identified information is deleted from the print mode standby information 14 (step S149). As a result, the print mode designation signal D1 registered as the preparation standby state is deleted when the corresponding cancel signal is received.

  When the image forming apparatus 2 receives the print mode designation signal D1 from one information processing apparatus 3 and the image forming unit 20 enters the print preparation state, for example, the print preparation state is as follows. Continue for a predetermined time. Therefore, even if the print mode designation signal D1 is received from another information processing apparatus 3 until the predetermined time elapses, the print preparation state of the image forming unit 20 is not changed. If print data is received from one information processing apparatus 3, image formation based on the print data can be started promptly.

  FIG. 12 is a diagram illustrating an example of a print processing form in a case where the print data DP is received before a predetermined time has elapsed since the print mode designation signal D1 was received from the information processing device 3a. As shown in FIG. 12, when the image forming apparatus 2 is in a standby state and receives a print mode designation signal D1 in which full color is designated from the information processing apparatus 3a, the image forming apparatus 2 shifts to a print preparation state corresponding to full color accordingly. (Process P10). Thereafter, when receiving the printing mode designation signal D1 in which the gray scale is designated from the same information processing apparatus 3a, the image forming apparatus 2 changes the full color printing preparation state to the printing preparation state corresponding to the gray scale accordingly. (Process P11). Thereafter, when the print mode designation signal D1 designating full color is received from another information processing apparatus 3b before the predetermined time elapses, the received print mode designation signal D1 is received without changing the print preparation state. Is stored as a preparation standby state (process P12). When the image forming apparatus 2 receives the gray scale print data DP from the information processing apparatus 3a until a predetermined time elapses after the print preparation state is changed in the process P11, the image forming apparatus 2 performs printing for forming an image in gray scale. Since preparation has already been performed, execution of the print job is started immediately (process P13). That is, the first printout time (FPOT) until the print output of the first page at this time is completed can be shortened. Thereafter, when the execution of the print job is finished (process P14), the image forming apparatus 2 prepares for printing corresponding to full color based on the print mode designation signal D1 from the information processing apparatus 3b stored as the preparation standby state in process P12. Start (process P15).

  Further, for example, when a predetermined time elapses when the image forming apparatus 2 is in the print preparation state of the print mode designated by the one information processing apparatus 3, the image forming apparatus 2 has received and prepared from the other information processing apparatuses 3 until then. The print preparation state is changed based on the print mode designation signal D1 stored as the standby state. Therefore, if print data is received from another information processing apparatus 3 thereafter, image formation based on the print data can be started promptly.

  FIG. 13 is a diagram illustrating an example of a print processing mode in a case where the print data DP is received from another information processing apparatus 3b after a predetermined time has elapsed since the print mode designation signal D1 was received from the information processing apparatus 3a. . As shown in FIG. 13, when the image forming apparatus 2 is in a standby state, when it receives a print mode designation signal D1 in which full color is designated from the information processing apparatus 3a, it shifts to a print preparation state corresponding to full color accordingly. (Process P20). Thereafter, when the print mode designation signal D1 designating the gray scale is received from another information processing apparatus 3b before the predetermined time elapses, the received print mode designation signal is changed without changing the print preparation state. D1 is stored as a preparation standby state (process P21). When the image forming apparatus 2 detects that a predetermined time has elapsed since the start of the print preparation state in the process P20 (process P22), the image formation unit 20 changes the print preparation state of the image forming unit 20 from the preparation state corresponding to full color to grayscale. Is changed to a preparation state corresponding to (process P23). After that, when the image forming apparatus 2 receives the grayscale print data DP from the information processing apparatus 3b before the predetermined time elapses, since the print preparation for performing the image formation in grayscale has already been performed, the image forming apparatus 2 promptly The execution of the print job is started (process P24). That is, the first printout time (FPOT) until the print output of the first page at this time is completed can be shortened.

  Further, for example, when the image forming apparatus 2 receives a cancel signal from the one information processing apparatus 3 in the print preparation state of the print mode designated by the one information processing apparatus 3, for example, The print preparation state is changed based on the print mode designation signal D1 received from the information processing device 3 and stored as the preparation standby state. Therefore, if print data is received from another information processing apparatus 3 thereafter, image formation based on the print data can be started promptly.

  FIG. 14 is a diagram illustrating an example of a print processing mode in a case where the print data DP is received from another information processing apparatus 3b after receiving the cancel signal D2 after receiving the print mode designation signal D1 from the information processing apparatus 3a. It is. As shown in FIG. 14, when the image forming apparatus 2 is in a standby state and receives a print mode designation signal D1 in which full color is designated from the information processing apparatus 3a, the image forming apparatus 2 shifts to a print preparation state corresponding to full color accordingly. (Process P30). Thereafter, when the print mode designation signal D1 designating the gray scale is received from another information processing apparatus 3b before the predetermined time elapses, the received print mode designation signal is changed without changing the print preparation state. D1 is stored as a preparation standby state (process P31). Thereafter, when receiving the cancel signal D2 from the information processing apparatus 3a, the image forming apparatus 2 changes the print preparation state of the image forming unit 20 from a preparation state corresponding to full color to a preparation state corresponding to gray scale (process P32). . When the image forming apparatus 2 receives the grayscale print data DP from the information processing apparatus 3b before the predetermined time elapses, the image forming apparatus 2 has already been prepared for printing to perform image formation in grayscale. Execution of the print job is started (process P33). That is, the first printout time (FPOT) until the print output of the first page at this time is completed can be shortened.

  As described above, according to the image forming apparatus 2 of the present embodiment, the first printout time (FPOT) can be shortened even when the print mode designation signal D1 is received from the plurality of information processing apparatuses 3 almost simultaneously. Thus, the conventional problems can be solved.

(Second Embodiment)
Next, a second embodiment will be described. In the first embodiment described above, for example, the print mode designating signal D1 designating full color is first received from the information processing device 3a, and the print mode designating signal D1 designating grayscale is subsequently received from the information processing device 3b. In the case where the print data is received first from the information processing apparatus 3b, the first print out time (FPOT) cannot be shortened because the gray scale print preparation state is not ready. In such a situation, for example, the user of the information processing apparatus 3a sets the post-processing mode such as the double-sided mode or the stapling while the display screen G2 as shown in FIG. 5B is displayed. In the meantime, this may occur when the user of the information processing device 3b designates the color mode as grayscale and immediately issues a print instruction. Therefore, in the second embodiment, a configuration example will be described in which the first printout time (FPOT) can be shortened even when the above situation occurs. In this embodiment, the hardware configuration of the image forming apparatus 2 is the same as that described in the first embodiment.

  FIG. 15 is a block diagram illustrating a configuration example of the information processing device 3 according to the second embodiment. In the information processing apparatus 3 according to the present embodiment, when the CPU 40 activates the driver program 55a, as shown in FIG. 15, the print mode designation signal transmission unit 41, the cancel signal transmission unit 42, the print data transmission unit 43, and the print It functions as a mode confirmation signal transmitter 44. Among these, the print mode designation signal transmission unit 41, the cancel signal transmission unit 42, and the print data transmission unit 43 are the same as those in the first embodiment.

  The print mode determination signal transmission unit 44 functions when the user performs an operation to determine the print mode in a state where the driver program 55a is being executed by the CPU 40, and sends a print mode determination signal to the image forming apparatus 2. A processing unit for transmission.

  Here, referring to FIG. 5 again, the timing at which the print mode determination signal transmission unit 44 transmits the print mode determination signal will be described. If the user clicks the property button 82 while the display screen G1 in FIG. 5 is displayed, the display screen G1 in FIG. 5A is switched to the display screen G2 in FIG. 5B. The user can perform various print mode setting operations while the display screen G2 is displayed. When the setting operation of various printing modes is completed and the designation of all the printing modes is confirmed, the user clicks the OK button 95 displayed at the bottom of the display screen G2. That is, the click operation on the OK button 95 on the display screen G2 is an operation for confirming the print mode designated by the user. Therefore, the print mode determination signal transmission unit 44 functions at a timing when the OK button 95 on the display screen G2 is operated, and transmits a print mode determination signal to the image forming apparatus 2. At this time, the transmitted print mode determination signal includes all information related to various print modes designated by the user.

  Accordingly, the information processing apparatus 3 transmits the print mode designation signal and the print mode determination signal before transmitting the print data to the image forming apparatus 2 by executing the driver program 55a. More specifically, the print mode determination signal is transmitted before the print data is transmitted after the print mode designation signal is transmitted at least once to the image forming apparatus 2.

  FIG. 16 is a diagram illustrating an example in which a plurality of information processing apparatuses 3a, 3b, 3c, and 3d sequentially transmit a print mode designation signal D1 and a print mode determination signal D3 to the image forming apparatus 2. In this case, the image forming apparatus 2 continuously receives the print mode designation signal D1 transmitted from each information processing apparatus 3a, 3b, 3c, 3d, and further transmits from each information processing apparatus 3a, 3b, 3c, 3d. The print mode determination signal D3 is continuously received. Therefore, similarly to the first embodiment, the control unit 10 in the image forming apparatus 2 according to the present embodiment performs the process of the image forming unit 20 based on the print mode designation signal D1 continuously received from different information processing apparatuses 3. By controlling the operation of each unit of the image forming apparatus 2 so that the print preparation state is not frequently switched, and adjusting the print preparation state of the image forming unit 20 based on the previously received print mode determination signal D3. The print preparation state corresponding to the print data that is likely to be received first is controlled. Hereinafter, the operation of the image forming apparatus 2 will be described.

  FIGS. 17 and 18 are flowcharts illustrating an example of a processing procedure performed in the image forming apparatus 2 in the second embodiment. This process is performed, for example, when the CPU 11 of the control unit 10 reads and executes the program 17a.

  First, as shown in FIG. 17, when the image forming apparatus 2 is powered on, the control unit 10 places the image forming unit 20 in a standby state (step S201). Then, the control unit 10 determines whether or not the print mode designation signal D1 has been received via the network interface 16 (step S202). If the print mode designation signal D1 has been received (YES in step S202), the control unit 10 executes a print preparation start process (step S203). The detailed processing procedure of this print preparation start processing is the same as that in the flowchart of FIG. 9 described in the first embodiment. On the other hand, if the print mode designation signal D1 has not been received (NO in step S202), step S203 is skipped and the process proceeds to step S204.

  Next, the control unit 10 determines whether or not the print mode determination signal D3 has been received via the network interface 16 (step S204). If the print mode determination signal D3 is received (YES in step S204), the control unit 10 executes a print preparation determination process (step S205). In this print preparation confirmation process, the print preparation state of the image forming unit 20 is controlled based on the received print mode confirmation signal D3. For example, when the image forming unit 20 is in a print preparation state corresponding to the print mode specified from one information processing apparatus 3 and receives the print mode determination signal D3 from the one information processing apparatus 3 Then, the print preparation state is changed based on the print mode determination signal D3. If the print mode designated by the print mode determination signal D3 is the same as the print mode designated by the print mode designation signal D1 received before that, the previous print preparation state is continued as it is. Further, when the image forming unit 20 is in a print preparation state corresponding to the print mode designated by one information processing apparatus 3 and receives a print mode determination signal D3 from another information processing apparatus 3 The print preparation state is changed based on the received print mode determination signal D3, and the print preparation state before the change is stored in the print mode standby information 14 of the print mode storage unit 13. The details of such a print preparation confirmation process (step S205) will be described later. On the other hand, if the print mode designation signal D1 has not been received (NO in step S204), step S205 is skipped and the process proceeds to step S204.

  Next, the control unit 10 determines whether or not the timer count value measured by the timer measurement unit 15 has passed a predetermined time (step S206). Here, the timer measurement unit 15 is performing a measurement operation, and when the timer count value thereby has passed a predetermined time, YES is determined. On the other hand, if the timer measurement unit 15 is not performing a measurement operation, or if the timer count value being measured has not reached the predetermined time, the determination is NO. If the timer count value has passed the predetermined time (YES in step S206), the control unit 10 executes a print preparation change process (step S207). The detailed processing procedure of the print preparation changing process is the same as that in the flowchart of FIG. 10 described in the first embodiment. On the other hand, if the timer count value has not passed the predetermined time (NO in step S206), step S207 is skipped and the process proceeds to step S208.

  Next, the control unit 10 determines whether or not a cancel signal has been received via the network interface 16 (step S208). If a cancel signal has been received (YES in step S208), the control unit 10 executes a print preparation cancel process (step S209). The detailed processing procedure of this print preparation canceling process is the same as that in the flowchart of FIG. 11 described in the first embodiment. On the other hand, if the cancel signal has not been received (NO in step S208), step S209 is skipped and the process proceeds to step S210.

  Next, the control unit 10 determines whether print data has been received via the network interface 16 (step S210). If print data has been received (YES in step S210), the control unit 10 starts drive job execution by starting drive control of the image forming unit 20 based on the received print data (step S210). S211). As a result, the image forming unit 20 enters a print job execution state. On the other hand, if print data has not been received (NO in step S210), step S211 is skipped. Thereafter, the processing executed by the control unit 10 returns to step S202, and the above-described processing is repeatedly performed.

  FIG. 18 is a flowchart illustrating an example of a detailed processing procedure of the print preparation confirmation process (step S205 in FIG. 17). When receiving the print mode determination signal D3, the control unit 10 determines whether or not the image forming unit 20 is in a print preparation state (step S221). If the image forming unit 20 is in the print preparation state (YES in step S221), it is further determined whether or not the print preparation state is confirmed (step S222). If the print preparation state has been confirmed (YES in step S222), the print preparation state has been confirmed based on the already received print mode confirmation signal D3, and the reception of the corresponding print data is awaited. Therefore, the print mode confirmation signal D3 received this time is stored in the print mode standby information 14 of the print mode storage unit 13 without changing the print preparation state based on the print mode confirmation signal D3 received this time ( Step S223). Therefore, when the print mode confirmation signal D3 is received from any information processing apparatus 3 in a state where the print preparation state has already been confirmed, the print mode confirmation signal D3 is set in the print mode standby information 14 as a preparation standby state. be registered.

  On the other hand, if the print preparation state of the image forming unit 20 is not yet confirmed (NO in step S222), the print mode confirmation signal D3 received this time is the confirmation signal received first in the image forming apparatus 2. . In this case, the control unit 10 determines the identification information (for example, IP address) included in the received print mode determination signal D3 (step S224) and transmits the print mode designation signal D1 in the print preparation state. It is determined whether or not the reception is from the same device as the device 3 (step S225). If the print mode determination signal D3 received this time is reception from the same apparatus (YES in step S225), the control unit 10 controls the print preparation state of the image forming unit 20 based on the received print mode determination signal D3. (Step S226). Here, when the print mode determination signal D3 received this time specifies a print mode different from the print mode specification signal D1 received last time, the print preparation state of the image forming unit 20 is displayed as the print mode determination signal D3 received this time. A process for changing the print mode to match the print mode specified in is performed. When the print preparation state change control is started, the control unit 10 once resets the measurement operation of the timer measurement unit 15 in order to continue the print preparation state for a predetermined time, and then starts the measurement operation again (step S227). . Accordingly, when the print mode determination signal D3 is further received from the one information processing device 3 in a state where the print preparation state is based on the print mode designation signal D1 received from the one information processing device 3, the control unit 10 Is in a state in which the print preparation state in the print mode designated by the print mode confirmation signal D3 is confirmed, and then continues in a state in which the print preparation state is confirmed until a predetermined time elapses.

  If the print mode determination signal D3 received this time is not received from the same apparatus (NO in step S225), the control unit 10 stores the current print preparation state in the print mode standby information 14 of the print mode storage unit 13. (Step S228). Then, the control unit 10 changes the print preparation state of the image forming unit 20 based on the print mode determination signal D3 received this time (step S229). When the print preparation state change control is started, the control unit 10 once resets the measurement operation of the timer measurement unit 15 in order to continue the print preparation state for a predetermined time, and then starts the measurement operation again (step S230). . Therefore, when the print mode determination signal D3 is received from another information processing apparatus 3 after that in the print preparation state based on the print mode designation signal D1 received from the one information processing apparatus 3, the control unit 10 Then, the print mode is changed to the print preparation state in the print mode designated by the received print mode confirmation signal D3, and the changed state is confirmed. After that, until the predetermined time elapses, the changed print preparation state is continued in a fixed state. At this time, the previous print preparation state is stored in the print mode storage unit 13 and becomes a preparation standby state, and then read out again from the print mode storage unit 13 at a timing when it is possible to prepare for printing. This is used as information for preparing the image forming unit 20 for printing.

  Further, when the image forming unit 20 is not in the print ready state when the print mode determination signal D3 is received (NO in step S221), the image forming unit 20 enters the print job execution state. That is, in this case, the image forming apparatus 2 is executing a print job, and the image forming unit 20 cannot be set in a print preparation state. Therefore, the control unit 10 stores the received print mode determination signal D3 in the print mode standby information 14 of the print mode storage unit 13 (step S231). Therefore, when the print mode determination signal D3 is received from the information processing apparatus 3 during execution of the print job, the print mode determination signal D3 is registered in the print mode standby information 14 as a preparation standby state.

  In steps S223 and S231, when the received print mode determination signal D3 is stored in the print mode standby information 14 of the print mode storage unit 13, in order to increase the priority when controlling the subsequent print preparation state. In the print mode standby information 14 shown in FIG. Similarly, when the current print preparation state is stored in the print mode standby information 14 in step S228, the print mode shown in FIG. 7 is used in order to increase the priority when the subsequent print preparation state is controlled. The standby information 14 is preferably stored in order from the top.

  By performing the above-described processing in the image forming apparatus 2, for example, even when the image forming unit 20 is in a print preparation state after receiving the print mode designation signal D1 from one information processing apparatus 3, If the print mode determination signal D3 is received from the information processing apparatus 3, the print preparation state of the image forming unit 20 is changed accordingly. Therefore, if print data DP is received from another information processing apparatus 3 thereafter, image formation based on the print data can be quickly started.

  FIG. 19 is a diagram illustrating an example of a print processing mode in a case where the print mode determination signal D3 is received from the information processing device 3b until a predetermined time elapses after the print mode designation signal D1 is received from the information processing device 3a. is there. As shown in FIG. 19, when the image forming apparatus 2 is in a standby state and receives a print mode designation signal D1 in which full color is designated from the information processing apparatus 3a, the image forming apparatus 2 shifts to a print preparation state corresponding to full color accordingly. (Process P40). After that, when the print mode designation signal D1 in which the gray scale is designated is received from another information processing apparatus 3b before the predetermined time elapses, the image forming apparatus 2 has received the print preparation state without changing the print preparation state. The print mode designation signal D1 is stored as a preparation standby state (process P41). After that, when a print mode determination signal D3 designating gray scale is received from another information processing apparatus 3b, the image forming apparatus 2 is based on the received print mode determination signal D3 even when the predetermined time has not elapsed. The print preparation state of the image forming unit 20 is changed (process P42). At this time, the previous print preparation state is stored in the print mode storage unit 13 and enters the preparation standby state. When the image forming apparatus 2 receives the grayscale print data DP from the information processing apparatus 3b until a predetermined time elapses after changing the print preparation state in the process P42, the image forming apparatus 2 performs printing for forming an image in grayscale. Since preparation has already been performed, execution of the print job is immediately started (process P43). Therefore, the first printout time (FPOT) until the print output of the first page at this time is completed can be shortened. Thereafter, when the execution of the print job ends (process P44), the image forming apparatus 2 starts print preparation corresponding to full color based on the print preparation state stored as the preparation standby state in process P42 (process P45).

  The image forming apparatus 2 according to the present embodiment also receives the print mode determination signal D3 from another information processing apparatus 3 after a predetermined time elapses after receiving the print mode determination signal D3 from one information processing apparatus 3, for example. In this case, the print preparation state is not changed based on the print mode confirmation signal D3 from the other information processing apparatus 3 received later, and from the one information processing apparatus 3 that has received the print mode confirmation signal D3 first. The printer waits for reception of the print data DP. Therefore, if print data DP is received from one information processing apparatus 3 thereafter, image formation based on the print data DP can be started promptly.

  FIG. 20 is a diagram illustrating an example of a print processing mode when the print mode determination signal D3 is received from another information processing device 3b after the print mode determination signal D3 is received from the information processing device 3a. As shown in FIG. 20, when the image forming apparatus 2 is in a standby state and receives a print mode designation signal D1 in which full color is designated from the information processing apparatus 3a, the image forming apparatus 2 shifts to a print preparation state corresponding to full color accordingly. (Process P50). Thereafter, when the print mode determination signal D3 designating full color is received from the same information processing apparatus 3a before the predetermined time elapses, the received print mode determination signal D3 is received without changing the print preparation state. Based on the above, the print preparation state is determined (process P51). After that, when the print mode designation signal D1 in which the gray scale is designated is received from another information processing apparatus 3b before the predetermined time elapses, the image forming apparatus 2 has received the print preparation state without changing the print preparation state. The print mode designation signal D1 is stored as a preparation standby state (process P52). Thereafter, even when the print mode confirmation signal D3 designating grayscale is received from another information processing apparatus 3b before the predetermined time elapses, the current print preparation state has already been confirmed. The image forming apparatus 2 stores the received print mode determination signal D3 as a preparation standby state without changing the print preparation state (process P53). When the image forming apparatus 2 receives the full color print data DP from the information processing apparatus 3a before the predetermined time elapses, the print preparation for performing the image formation in the full color has already been performed. Is started (process P54). That is, the first printout time (FPOT) until the print output of the first page at this time is completed can be shortened.

  As described above, according to the image forming apparatus 2 of the present embodiment, for example, the print mode designation signal D1 designating full color is first received from the information processing apparatus 3a, and subsequently the gray scale is designated from the information processing apparatus 3b. When the print data designation signal D1 is received and then the print data DP is received first from the information processing apparatus 3b, the grayscale print preparation is performed based on the print mode determination signal D3 received first from the information processing apparatus 3b. Since the state is already in place, the first printout time (FPOT) can be shortened. Therefore, the image forming apparatus 2 of the present embodiment can be expected to have an effect of further reducing the first printout time (FPOT) as compared with the first embodiment.

(Modification)
As mentioned above, although typical embodiment regarding this invention was described, this invention is not limited to embodiment mentioned above. That is, various modifications other than the above-described embodiment can be applied to the present invention.

  For example, the case where the image forming apparatus 2 in the above-described embodiment is an apparatus called a multifunction peripheral or an MFP has been illustrated, but is not necessarily limited to such an apparatus. For example, the image forming apparatus 2 may be a printer dedicated machine.

  In the above embodiment, the configuration example in which the print mode storage unit 13 is provided separately from the hard disk device 17 has been described. However, the print mode storage unit 13 may be provided as a partial storage area of the hard disk device 17.

  In the above embodiment, when the control unit 10 controls the image forming unit 20 to the print preparation state based on the print mode designation signal D1, the value of the predetermined time measured by the timer measurement unit 15 is always constant. Although the case where it controls is illustrated, it is not restricted to this. That is, when the control unit 10 controls the image forming unit 20 to the print ready state based on the print mode designation signal D1, the timer measurement unit is set according to the type of print mode designated by the received print mode designation signal D1. The value of the predetermined time measured by 15 may be changed. For example, when the driver program 55a is activated in the information processing apparatus 3 and the user performs an operation for setting the number of copies to a plurality of copies, the information processing apparatus 3 has specified that a print mode of a plurality of copies has been designated. The print mode designation signal D1 shown is transmitted to the image forming apparatus 2. In this case, when the image forming apparatus 2 receives the printing mode designation signal D1 in which a plurality of copies are designated, the value of the predetermined time is set to a time (for example, 10 seconds) shorter than a normal time (for example, 30 seconds). Also good. When the user designates a plurality of copies, it is highly likely that a post-processing mode designation operation such as stapling is subsequently performed, and it is considered that it takes a relatively long time for the user to determine the print mode. Therefore, as described above, when the print mode designation signal D1 in which a plurality of copies are designated is received, the image forming apparatus 2 sets the value of the predetermined time to a time shorter than usual, thereby allowing other information processing. Since the print preparation based on the print mode designation signal D1 received from the apparatus 3 can be started at an early stage, when a user of another information processing apparatus 3 gives a print instruction at an early stage, the print preparation is executed accordingly. It becomes possible to shorten the first print out time (FPOT) in a print job.

  Depending on the print mode specified by the user of the information processing apparatus 3, there is a mode in which the print job is not immediately executed even when the image forming apparatus 2 receives the print data DP. For example, in the confidential document print mode, the image forming apparatus 2 does not immediately form an image based on the received print data DP, but stores the received print data DP in the hard disk device 17. Then, when the user inputs a password by operating the operation panel 18 and the input password matches the password added to the print data DP or the like, image formation is started. In the case of a print mode in which saddle stitching is performed as post-processing, the number of output sheets that can be saddle stitched may be limited. The job execution is started after counting the number. In such a case, the operation for preparing for printing may be started after receiving the print instruction without controlling the image forming unit 20 to the print ready state at the timing of receiving the print mode designation signal D1. . Therefore, the print mode designation signal D1 for designating the confidential document print mode and the print mode designation signal D1 for designating saddle stitching are defined in advance as the specific print mode designation signal D1. When a specific print mode designation signal D1 is received from the one information processing apparatus 3 in a state where the image forming unit 20 is in a print preparation state by the designation from the information processing apparatus 3, the cancel signal D2 is received. Similarly to the case, another print mode designation signal D1 stored in the print mode storage unit 13 is read, and the print preparation state of the image forming unit 20 is changed in accordance with the read print mode designation signal D1. It may be configured. Accordingly, the image forming unit 20 can be set in a print preparation state in advance in preparation for receiving print data DP that can immediately execute a print job from another information processing apparatus 3.

  Furthermore, since the print preparation operation differs between the full color mode and the gray scale mode in the above-described embodiment, the preparation operation in the case of receiving a print mode designation signal corresponding to these has been mainly described. However, there are other print preparation operations that differ depending on the designated print mode. For example, when the output paper is plain paper, the high-speed printing mode is set, and the transfer belt 31 and the like are driven at high speed. On the other hand, when the output paper is thick paper, the transfer belt 31 and the like are driven at a low speed in consideration of toner fixing characteristics and the like. For this reason, the drive speed in the image forming unit 20 differs depending on the type of output paper specified by the user, and switching takes a certain time. Therefore, if the image forming apparatus 2 is configured so that the drive speed is controlled in advance according to the type of output paper as the print preparation operation performed before receiving the print data DP, the first print can be performed. Outtime (FPOT) can be shortened.

DESCRIPTION OF SYMBOLS 1 Image forming system 2 Image forming apparatus 3, 3a, 3b, 3c, 3d Information processing apparatus 4 Network 10 Control part (control means)
13 Print mode storage unit (print mode storage means)
15 Timer measurement unit (timer measurement means)
16 Network interface (data receiving means)
20 Image forming unit (image forming means)
41 Print mode designation signal transmission unit (print mode designation signal transmission means)
42 Cancel signal transmission unit 43 Print data transmission unit (print data transmission means)
44 Print mode determination signal transmission unit (print mode determination signal transmission means)
53 Operation input section (operation input means)

Claims (13)

An image forming apparatus connected to a plurality of information processing apparatuses via a network,
Data receiving means for receiving data from each of a plurality of information processing devices via the network;
An image forming unit that forms an image based on the print data when the print data is received by the data receiving unit;
A control means for controlling the image forming means to a print ready state based on the print mode designation signal when the data receiving means receives a print mode designation signal transmitted by one information processing apparatus;
When the image forming unit is in a print ready state, when a print mode designation signal transmitted from another information processing apparatus is received by the data receiving unit, the print mode designation signal is stored to prepare a standby state. Printing mode storage means and
An image forming apparatus comprising: A timer measuring unit for measuring an elapsed time since the image forming unit is controlled to be in a print ready state;
The image forming apparatus according to claim 1, wherein the control unit continues the print preparation state of the image forming unit until an elapsed time measured by the timer measuring unit reaches a predetermined time.   When the elapsed time measured by the timer measurement unit reaches a predetermined time, the control unit reads a print mode designation signal stored in the print mode storage unit, and associates the print mode designation signal with the print mode designation signal. 3. The image forming apparatus according to claim 2, wherein the print preparation state of the image forming means is changed.   When the print preparation state of the image forming unit is changed based on the print mode designation signal stored in the print mode storage unit by the control unit, the timer measurement unit displays the print mode designation signal as the print mode designation signal. 4. The image forming apparatus according to claim 3, wherein an elapsed time from the timing stored in the mode storage means is measured.   When the data reception means receives another print mode designation signal transmitted from the one information processing apparatus before the elapsed time measured by the timer measurement means reaches a predetermined time, the control means 5. The image forming apparatus according to claim 2, wherein the print preparation state of the image forming unit is changed based on the received print mode designation signal.   The control means stores the print mode when the data receiving means receives a cancel signal transmitted from the one information processing apparatus before the elapsed time measured by the timer measuring means reaches a predetermined time. 6. An image according to claim 2, wherein a printing mode designation signal stored in said means is read, and a printing preparation state of said image forming means is changed in accordance with said printing mode designation signal. Forming equipment.   The control unit, when the data reception unit receives a specific print mode designation signal transmitted from the one information processing apparatus before the elapsed time measured by the timer measurement unit reaches a predetermined time, The print mode designation signal stored in the print mode storage unit is read out, and the print preparation state of the image forming unit is changed in accordance with the print mode designation signal read out from the print mode storage unit. Item 7. The image forming apparatus according to any one of Items 2 to 6. The data receiving means is capable of receiving a plurality of types of print mode designation signals from each of the plurality of information processing devices;
3. The control unit, when controlling the image forming unit to a print ready state based on a print mode designation signal, changes a value for a predetermined time according to the type of the print mode designation signal. 8. The image forming apparatus according to any one of 1 to 7.   When the data receiving unit receives the print mode determination signal transmitted from the one information processing apparatus before the elapsed time measured by the timer measuring unit reaches a predetermined time, the control unit performs the timer measurement. The image forming apparatus according to claim 2, wherein the elapsed time measured by the unit is reset.   The control means does not receive the print mode confirmation signal from the one information processing apparatus in the data receiving means until the elapsed time measured by the timer measuring means reaches a predetermined time, and the other When a print mode determination signal is received from the information processing apparatus, the print preparation state of the image forming unit is changed based on the received print mode determination signal, and the elapsed time measured by the timer measurement unit is changed. The image forming apparatus according to claim 2, wherein the image forming apparatus is reset. An image forming apparatus connected to a plurality of information processing apparatuses via a network,
Data receiving means for receiving data from each of a plurality of information processing devices via the network;
An image forming unit that forms an image based on the print data when the print data is received by the data receiving unit;
A control means for controlling the image forming means to a print ready state based on the print mode designation signal when the data receiving means receives a print mode designation signal transmitted by one information processing apparatus;
With
When the image forming unit is controlled to be in a print ready state, the control unit continues the print ready state until at least a predetermined time has elapsed. An image forming system in which a plurality of information processing apparatuses and an image forming apparatus are connected to be able to perform data communication via a network,
Each of the plurality of information processing devices
An operation input means for receiving a print mode designation operation by a user;
A print mode designation signal transmitting unit that transmits a print mode designation signal to the image forming apparatus each time a print mode is designated via the operation input unit;
Print data transmission means for transmitting print data to the image forming apparatus when a print instruction is given via the operation input means;
With
The image forming apparatus includes:
Data receiving means for receiving data from each of the plurality of information processing devices;
An image forming unit that forms an image based on the print data when the print data is received by the data receiving unit;
When the data receiving unit receives a print mode designation signal transmitted from one of the plurality of information processing devices, the image forming unit is set in a print ready state based on the print mode designation signal. Control means for controlling;
When the image forming unit is in a print preparation state, if the data receiving unit receives a print mode designation signal transmitted from another information processing device among the plurality of information processing devices, the print mode designation is performed. Print mode storage means for preparing a standby state by storing a signal;
An image forming system comprising: A method for controlling an image forming apparatus connected to a plurality of information processing apparatuses via a network,
Receiving data transmitted by each of a plurality of information processing devices via the network;
When the print mode designation signal transmitted from one information processing apparatus via the network is received, controlling the image forming apparatus to a print ready state based on the print mode designation signal;
When the image forming apparatus is in a print preparation state, when a print mode designation signal transmitted from another information processing apparatus is received via the network, the print mode designation signal is stored in a predetermined storage unit. A step of preparing for standby by
A control method for an image forming apparatus, comprising:

Images