JP2004164014A - Printing system - Google Patents

Abstract

A reprint process can be managed by a print server on a communication line that is a source of print data.
In a printing system in which a web print server (120), a client terminal (130), and a printing device (150) are communicably connected, printing is performed by the web print server (120) via the client terminal (130) in response to a print request from the client terminal (130). The print data is transmitted to the device 150. In the printing apparatus 150, when the printing is unsuccessful, the reprint function for performing reprinting in the printing apparatus is set to execution prohibition. In this state, if the printing in the printing apparatus 150 becomes unsuccessful, the client terminal 130 Further, the web print server 120 is requested to retransmit the print data. The print data retransmission control unit 127 determines whether or not the requested print data can be retransmitted, and retransmits the print data to the client terminal if the retransmission is permitted.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a print control technique in a print system configured using a communication line such as the Internet.
[0002]
[Prior art]
Generally, there is a printing system in which a print server and a client are connected via the Internet, and a print server on the web executes a print job via the client. In this type of printing system, a helper module for printing is installed in a web browser (for example, Internet Explorer (registered trademark), Netscape Navigator (registered trademark)) operating on a client, and a print server on the web is installed in the helper. Sends print data to which a special MIME (Multipurpose Internet Mail Extensions) type is added. If the transmitted data is MIME-type data that can be processed, the helper module transmits the data to a printer to implement printing of the print data.
[0003]
In the execution of the print job, if printing fails due to a jam or the like, an auxiliary function for reprinting the print job is provided. For example, (1) execute the reprint function of the printer, or (2) manually or automatically execute reprint on the client to acquire print data again from the print server and perform reprint. Such a system configuration has been proposed.
[0004]
The reprinting function described above is convenient because, when printing fails due to a jam or the like, the user does not need to restart the printing operation from the beginning.
[0005]
[Problems to be solved by the invention]
However, with the above-described general reprint function, there is no function for restricting the execution of reprint, and there is a possibility that a large number of the same printed matter is output carelessly. In particular, when reprinting is performed by the reprint function of the printer, the print server on the web that is the transmission source of the print data cannot manage this at all. Therefore, distribution of print data for a print requiring security using a print server on the web has been avoided.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to enable reprint processing to be managed by a print server on a communication line that is a transmission source of print data.
[0007]
Further, another object of the present invention is to distribute printed matter via a communication line, so that reprinting can be performed flexibly in the event of a print failure, but the same printed matter is not repeatedly printed more than necessary. It is to enable control.
[0008]
[Means for Solving the Problems]
A printing system according to the present invention for achieving the above object has the following configuration. That is,
A printing system in which a server device, a client device, and a printing device are communicably connected,
Transmitting means for transmitting print data from the server device to the printing device via the client device in response to a print request from the client device;
A recognition unit that recognizes unsuccessful printing in the printing device in the client device;
Requesting means for requesting the server device to retransmit print data when the recognition of the unsuccessful printing of the print data in the printing device is recognized by the recognition means;
The server device includes a retransmission unit that determines whether the print data requested by the request unit can be retransmitted, and transmits the print data to the client device when the retransmission is permitted.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
First, an outline of the printing system of the present embodiment will be described. FIG. 1 is a diagram illustrating an overall configuration of a printing system according to the present embodiment.
[0011]
In FIG. 1, a web print server 120 as a server device, a client terminal 130 as a client device, and a printing device 150 are connected to one another via a communication line 100. The communication line 100 is, for example, a LAN such as the Internet or an intranet, a WAN, a telephone line, a dedicated digital line, an ATM or a frame relay line, a communication satellite line, a cable TV line, a data broadcasting wireless line, or a combination thereof. This is a so-called communication network realized by. The communication line 100 only needs to be able to transmit and receive data, and may be a communication unit from the client terminal 130 to the web print server 120, a communication unit from the client terminal 130 to the printing device 150, and The means of communication to 150 may be different.
[0012]
In the web print server 120, the print application 121 generates print data based on a print request received from the client terminal 130. The print data holding unit 129 holds print data generated by the print application 121 for reprinting. The reacquisition counter 122 counts the number of reacquisitions of print data for each print job. The print data retransmission control unit 127 determines whether reprinting can be performed based on the number of reacquisitions, which will be described later. The data holding timer 123 performs, for each job, a first print request, a previous print or reacquisition request, or a time measurement from a print data transmission time. The print data retransmission control unit 127 determines whether reprinting is possible or not in accordance with at least one of these results. The encryption unit 128 encrypts the print data to be transmitted using the unique ID of the printing apparatus 150 or an electronic certificate.
[0013]
Further, the communication control unit 124 acquires the print data generated by the print application 121 from the print data holding unit 129, encrypts the acquired print data by the encryption unit 128, and transmits the encrypted print data via the communication line 100. Send to client terminal 130. Further, in response to the reprint request from the client terminal 130, the print data retransmission control unit 127 refers to the reacquisition counter 122 and the data holding timer 123 to determine whether the printing corresponding to the reprint request can be executed. . If reprinting is possible, the print data held in the print data holding unit 129 is sent to the client terminal 130 again via the communication control unit 124.
[0014]
The client terminal 130 is composed of, for example, one of a desktop personal computer, a notebook personal computer, a mobile personal computer, a PDA (personal data assistant), and the like. Note that a mobile phone having a built-in program function (i-mode (registered trademark) or the like) can also be used.
[0015]
In the example of FIG. 1, a general personal computer including a web browser 131 is illustrated. A print helper module 132 is installed in a web browser (Internet Explorer (registered trademark), Netscape Navigator (registered trademark)), and print data obtained by adding a special MIME type from the print server 120 on the web to the helper module 132 Of the print data from the print server on the web. The print helper module 132 checks the MIME type added to the print data transmitted from the print server 120, and executes a print process if the MIME type is an assumed specific character string. In the example of FIG. 1, the printing process is passed to the print spooler 133 using a general printing mechanism such as Windows (registered trademark) GDI, and is printed from the print spooler 133 to the printing device 150 via the communication line 100. The data is passed. This print data is temporarily stored in the spool data 135.
[0016]
The client terminal 130 further includes a print error recognizing unit 134 for recognizing the occurrence of a print error or a jam during printing (a state in which an expected print result cannot be obtained on recording paper due to a failure in delivery or transmission of print paper during printing). Have. The print error recognition unit 134 recognizes the print error or the occurrence of the jam by receiving an error notification from the printing apparatus 150 or polling the printing apparatus 150 for status confirmation.
[0017]
The printing device 150 is a printer (for example, a laser printer) that can be connected to a network. In the printing apparatus 150, the print execution unit 151 controls the printer engine 154 to execute printing of the print data stored in the print data storage unit 158. The reprint execution unit 152 reprints using the print data stored in the print data storage unit 158 without acquiring print data again when an error or a jam occurs (hereinafter, this will be referred to as original reprinting). Function). The error / jam occurrence detection unit 153 detects an error or jam occurrence in the printer engine 154. The print data storage unit 158 is a temporary storage location for print data (typically using a RAM or a hard disk as a storage medium).
[0018]
A printer engine 154 forms a visible image based on the print data stored in the print data storage unit 158 under the control of the print execution unit 151. In the present embodiment, a laser beam system is used as the printer engine 154, but it goes without saying that a printer engine of another system such as an inkjet system can be applied. The printing device 150 may include a unique ID that is a unique identifier of the printing device, or data (155) of an electronic certificate.
[0019]
FIG. 2 is a block diagram showing a basic hardware configuration of the web print server 120 and the client terminal 130 (in the case of a general computer) shown in FIG.
[0020]
In FIG. 2, reference numeral 21 denotes a CPU, which executes various controls in the apparatus according to a control program stored in the ROM 23 or the RAM 22. A RAM 22 provides a control program executed by the CPU 21 and a work area used when the CPU 21 executes various controls. Reference numeral 23 denotes a ROM, which stores a boot program executed when the apparatus is started and various data.
[0021]
Reference numeral 24 denotes a LAN adapter, which connects the apparatus (the web print server 120 or the client terminal 130) to the communication line 100. Reference numeral 25 denotes a video adapter, which performs various displays on a display (not shown) under the control of the CPU 21. Input units 26 and 27 represent a keyboard and a mouse as a pointing device, respectively. A hard disk 28 stores various control programs. The control program stored in the hard disk 28 is loaded on the RAM 22 as needed, and is executed by the CPU 21. A CD-ROM drive 29 reads data from a CD-ROM in which application programs and various data are stored. Reference numeral 20 denotes a system bus, which connects the above-described components so that they can communicate with each other.
[0022]
In the configuration shown in FIG. 2, for example, the print application 121, the communication control unit 124, the encryption unit 128, and the print data retransmission control unit 127 of the web print server 130 execute the control program loaded on the RAM 22 from the hard disk 28 by the CPU 21. It is realized by executing. The reacquisition counter 122, the data holding timer 123, and the print data holding unit 129 are realized by using the RAM 22 or the hard disk 28.
[0023]
In the configuration shown in FIG. 2, the web browser 131, the print helper 132, the print spooler 133, and the print error recognition unit 134 of the client terminal 130 each execute the control program loaded on the RAM 22 from the hard disk 28 by the CPU 21. Is realized by: The display provided by the web browser 131 is displayed on a display (not shown) via the video adapter 25. The spool data 135 is held using the RAM 22 or the hard disk 28.
[0024]
As described above, in the printing system of the present embodiment, the web print server 120, the client terminal 130, and the printing device 150 are connected to each other via the communication line 100. The web print server 130 is provided with a reacquisition counter 122 for storing the number of print data reprint requests for a specific print job, and a print data holding unit 129 for holding print data. Until the count value of the reacquisition counter 122 exceeds a predetermined value, a reprint request from the client terminal is accepted, and the print data is retransmitted.
[0025]
A timeout is provided for the print data held in the print data holding unit 129 so that the print data can be deleted after a predetermined time. The timing of the timeout is performed by the data holding timer 123. Therefore, after the timeout, the corresponding print data in the print data holding unit 129 is deleted, and a reprint request cannot be accepted regardless of the count value of the reacquisition counter 122.
[0026]
Further, when the failure of printing such as a jam is detected in the printing apparatus 150 in a state where the original reprint function is not permitted, the print data in the print data storage unit 158 is immediately discarded, and the printing apparatus 150 Disable the reprint function. Here, when reprinting is performed after a print failure, an attempt is made to acquire print data from the web print server 120 again through the client terminal 130. The print server 120 controls reprint permission / non-permission according to the settings (the number of re-acquisitions and the timeout time).
[0027]
In addition, by embedding or encrypting the printer's unique information (unique ID and digital certificate) in the print data, even if the communication line is intercepted in the middle or the data is copied in the middle, it is easy. May be configured so that reprinting becomes impossible.
[0028]
Hereinafter, the operation of the printing system according to the present exemplary embodiment will be described in detail with reference to flowcharts. FIGS. 3, 4 and 5 are flowcharts showing the printing process in the printing system of FIG. In this flowchart, steps S100 to S108 indicate processing in the web print server 110, steps S200 to S210 indicate processing in the client terminal 130, and steps S300 to S309 indicate processing in the printing device 150. Each process is realized by the CPU incorporated in each device executing a control program stored in a memory such as a RAM.
[0029]
In FIG. 3, first, a print request by the user from the client terminal 130 to the print server 120 is transmitted through the web browser 131 (step S200). At this time, if necessary, the client terminal 130 acquires the unique ID of the printing device 150 (step S300), and adds this to the print request. FIG. 7A is a diagram illustrating an example of a data configuration of a print request. The data includes a data indicating a print request and a unique ID acquired from the printing apparatus 150 used for printing. Note that electronic certificate data may be used instead of the unique ID.
[0030]
In the web print server 120, a print request is received from the client terminal 130 (step S100), and the print application 121 generates print data (step S101). The print data is encrypted by the encryption unit 128 using the unique ID added to the print request (step S102), and thereafter, is stored in the print data storage unit 129 (step S103). At the same time, the re-acquisition counter 122 is cleared, the data holding timer 123 is initialized, and the time measurement is started (step S104), and the encrypted print data is sent to the client terminal 130 (step S105).
[0031]
FIG. 6 is a schematic diagram of the print data 200 transmitted from the web print server 120 to the client terminal 130. The print data 200 includes a MIME type header section 201, a job ID section 202, a printer unique ID / certificate section 203 indicating information unique to the printer, a unique reprint disable flag 204 for instructing prohibition of execution of the unique reprint function, and , A print data unit 205 which is a collection of actual printer print commands (a string of character print commands such as LIPS IV and drawing commands).
[0032]
4, when the web browser 131 operating on the client terminal 130 receives print data from the web print server 120 (step S201), it is determined whether a MIME type header that can be processed by the web print helper plug-in 132 is added. (Step S202). If such a MIME type header has not been added, the processing is performed by another type of helper plug-in, or the processing ends as an error.
[0033]
If a processable MIME type header is added, the corresponding print helper 132 is activated and the print process is passed to it (step S203). The plug-in print helper 132 executes the passed print processing and passes the print data to the print spooler 133. The print spooler 133 spools the print data and sends it to the printing device 150 (step S204).
[0034]
FIG. 7B is a diagram illustrating a data configuration example of print instruction data transmitted from the client terminal 130 to the printing device 150. The print instruction data includes a unique ID and a unique reprint function non-permission flag in addition to the print data for image formation.
[0035]
In the printing device 150, the printing unit 151 receives the print data (step S301), and when a unique ID is added to the print data, compares it with the unique ID of the printing device (step S302). If the unique ID of the printing apparatus 150 does not match the unique ID included in the print instruction, the fact is notified to the client terminal 130. The client terminal 130 that has received the notification deletes the print data in the spool and displays an error on the display to notify the user (step S210).
[0036]
On the other hand, if the two unique IDs match, after decrypting the print data (step S303), the print data is stored in the print data storage unit 158, and the printing process is performed by the printer engine 154 (step S303). S304).
[0037]
The error / jam occurrence detection unit 153 determines whether an error or a jam has occurred in the printer engine 154 during the printing process (step S305). If it is determined that there is no error or jam and the printing is successful, the client terminal 130 is notified of that fact. The client terminal 130 deletes the spool data, displays success on the display, notifies the user of the deletion (step S205), and ends the process.
[0038]
When a print error or a jam is detected by the error / jam occurrence detection unit 153, the original reprint function non-permission flag included in the print instruction is checked to determine whether the original reprint function is permitted. Is confirmed (step S206). If the unique reprint function is permitted, the client terminal 130 is notified that a print error or a jam has occurred. The client terminal 130 that has received this notification displays the fact on the display and notifies the user (step S206). Thereafter, the printing apparatus 150 is in a state of waiting for a user instruction for independent reprinting. Then, in response to an instruction to start original reprinting, reprinting of the print data is started using the print data held in the print data storage unit 158.
[0039]
On the other hand, if the unique reprint function is prohibited, the print data stored in the print data storage unit 158 in the printing apparatus 150 is deleted in response to the detection of a print error or a job (step S309). ), A notification that a printing error (or a jam or the like) has occurred or that independent reprinting is prohibited. The disapproval of the original reprint function is included in the print data from the web print server 120 as shown in FIG. 6, and the client terminal 130 can know this. Therefore, it is not necessary to notify the printing apparatus 150 again. Good.
[0040]
The client terminal 130 recognizes that the printing has failed based on the notification from the printing apparatus in step S309, deletes the spool data, and displays a print error or a jam occurrence on the display. This is notified to the user. Then, the client terminal 130 transmits a reprint request to the web print server 120 in response to recognizing that the printing has failed.
[0041]
FIG. 7C is a diagram illustrating an example of a data configuration of a reprint request. The reprint request includes a code indicating that the request is a reprint request and a job ID of the print job (which can be known from the job ID 202 of the print data 200).
[0042]
When receiving the reprint request (step S106), the web print server 120 increments the reacquisition counter 122 corresponding to the print job specified by the job ID by one (step S107). Then, based on the counter value of the reacquisition counter 122, it is determined whether reprinting is possible (step S108). That is, when the value of the re-acquisition counter 122 has reached the number of times not permitted, the client terminal 130 is notified that re-printing is not permitted. Further, it is determined whether or not the time of the data holding timer 123 has expired, that is, whether or not the time held in the print data holding unit 129 has exceeded a predetermined time. Is notified to the client terminal 130 (step S109).
[0043]
The client terminal 130 that has received the notification of reprint non-permission from step S108 or step S109 displays the fact on the display and notifies the user.
[0044]
If the reacquisition counter 122 is within the permitted number of times and the data holding timer 123 has not timed out, the process returns to step S105, and the print data of the corresponding print job held in the print data storage unit 129 is sent to the client. Retransmit to terminal 130.
[0045]
In the above embodiment, the encryption / decryption using the unique ID (S102, S303) and the collation of the printing device (S302) are optional and not essential. Further, electronic certificate data may be used instead of the above-described unique ID.
[0046]
In the above encryption, the whole or a part of the downloaded print data is encrypted by a symmetric encryption method using a unique ID of the printing apparatus as an encryption key. Alternatively, when an electronic certificate is used, all or part of the print data may be encrypted by a public encryption method using a public key included in the electronic certificate. The whole or a part of the print data may be encrypted by the symmetric encryption method using the encryption key of the symmetric encryption method encrypted by the public encryption method using the public key included in the electronic certificate.
[0047]
Further, in the web print server 120, when the data holding timer 123 counts up, the corresponding print data held in the print data holding unit 129 may be deleted. Alternatively, after the data holding timer 123 counts up, the corresponding print data may be deleted by an external request. Alternatively, print data for which a predetermined time has elapsed may be simultaneously erased in response to an external request.
[0048]
As described above, the printing system according to the present embodiment is a printing system in which a server device, a client device, and a printing device are communicably connected to each other. In response to a print request from the client device, the server device Print data is transmitted to the printing device via the device. Then, the client device is provided with a function for recognizing the unsuccessful printing in the printing device, and when it is recognized that the printing of the printing data in the printing device is unsuccessful, the print data is resent to the server device. Request. The server device determines whether or not the requested print data can be retransmitted, and if the retransmission is permitted, transmits the print data to the client device. Therefore, according to the above embodiment, in printing via the web, the print server can manage reprinting in the event of a print failure, and can flexibly execute reprinting even in the event of a print failure, but inadvertently copy the same printout many times. It is possible to control so as not to print. This makes it possible to print documents, such as securities, certificates, and receipts, that would otherwise have a problem with the legitimacy of the printed matter if they were printed multiple times, while maintaining the legitimacy of the printed matter via the Web. It becomes.
Preferably, it is possible to prohibit the execution of the reprint function for performing reprinting in the printing apparatus when the printing in the printing apparatus is unsuccessful. When the client device recognizes that the printing of the print data has failed, the client device requests the server device to retransmit the print data. By providing a function to prohibit the reprint function from the outside, even if a printing apparatus having the reprint function is used, it is possible to print various documents via the web while maintaining the validity.
Further, preferably, in a state where the execution of the reprint function is prohibited, when the printing of the print data in the printing apparatus is unsuccessful, a function of erasing the print data in the printing apparatus and a function of the reprint function are provided. When the printing of the print data by the printing apparatus is unsuccessful in a state where the execution is prohibited, a function to notify the client apparatus to that effect is provided.
Preferably, the server device has a function of counting the number of times print data is acquired.
[0049]
Further, according to the embodiment, the server device determines that retransmission is possible when the number of times of transmission or retransmission of the print data is equal to or less than a predetermined number. Alternatively, if the holding time of the print data in the server device does not exceed the predetermined time, it is determined that retransmission is possible. That is, when print data is held in the server device for more than the predetermined time, it is determined that the print data cannot be repeated. With this configuration, it is possible to effectively manage whether or not reprinting can be performed with a simple configuration. When print data is stored in the print server for longer than the predetermined time, the print data is erased, so that the security of the print data can be further improved.
[0050]
Further, according to the above-described embodiment, in a state where the execution of the reprint function is prohibited, the print data held in the client device and the printing device is erased when the unsuccessful printing is detected. Therefore, the security of the print data can be further improved.
[0051]
Further, according to the above-described embodiment, the print request includes the identification information for specifying the printing apparatus to execute the printing, and the identification information is added to the transmitted print data. Then, the printing device compares the identification information of the printing device with the identification information added to the transmitted print data, and prints the print data only when the matching of the identification information is confirmed. You.
According to the above-described embodiment, the print request includes identification information such as a unique ID or digital certificate data that specifies a printing apparatus that performs printing, and encrypts and transmits the print data based on the identification information. The printing apparatus decodes and uses the print data based on its own identification information. In other words, by embedding or encrypting printer-specific information in print data, even if a communication line is intercepted on the way or data is copied, reprinting cannot be easily performed. Therefore, security can be enhanced.
[0052]
Further, the server device of the present embodiment is a print server device that transmits print data in response to a print request from a client device transmitted via a network, and after transmitting print data in response to a print request, It is possible to receive a retransmission request for the print data, and when the retransmission request is received, it is determined whether or not reprinting can be performed on the print data. When it is determined that reprinting can be performed, the corresponding print data is retransmitted in response to the retransmission request. Here, as described above, the determination as to whether or not reprinting can be performed is based on whether the number of receptions of the retransmission request has exceeded a predetermined value, or whether the elapsed time (or the data holding time or the like) after transmitting the print data has been determined. This is performed based on whether or not a predetermined time has been exceeded.
[0053]
According to the present embodiment, an information processing device as a client device is provided. This information processing device is an information processing device that transmits a print request to an external device connected via a network and transmits received print data to a printing device connected to the network in response to the request. The print data handled here includes permission information indicating whether or not execution of a reprint function for reprinting in the printing apparatus when printing is unsuccessful is prohibited. Then, in a state where the reprint function by the printing device is prohibited, when a notification of unsuccessful printing is received from the printing device, the spool data based on the printing data is deleted, and the printing device is Request retransmission of print data.
[0054]
According to the embodiment, a printing apparatus is provided. The printing device is a printing device connectable to a network, and can receive print data via the network. Here, the received print data includes information indicating whether or not execution of a reprint function for reprinting in the printing apparatus is prohibited when printing is unsuccessful. The printing apparatus holds the received print data so that reprinting can be performed. However, when the permission information indicates that execution of the reprinting function is prohibited and the printing of the print data is unsuccessful. , The held print data is deleted. Then, it notifies the transmission source of the print data that the printing of the print data has failed.
[0055]
The printing system of the present embodiment is configured by the print server device, the information processing device, and the printing device described above.
[0056]
It is to be noted that an object of the present invention is to provide a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and a computer (or CPU or MPU) of the system or apparatus to store the storage medium. It is needless to say that the present invention is also achieved by reading and executing the program code stored in
[0057]
In this case, the program code itself read from the storage medium realizes the function of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.
[0058]
As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, and the like can be used.
[0059]
When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also an OS (Operating System) running on the computer based on the instruction of the program code. It goes without saying that a part or all of the actual processing is performed and the functions of the above-described embodiments are realized by the processing.
[0060]
Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that a CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
[0061]
【The invention's effect】
As described above, according to the present invention, the reprint processing can be managed by the print server on the communication line that is the transmission source of the print data.
Further, according to the present invention, in distributing print data via a communication line, it is possible to flexibly execute reprinting in the event of a print failure, but not to repeatedly print the same printed material more than necessary. It becomes possible to do.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an overall configuration of a printing system according to a first embodiment of the present invention.
FIG. 2 is a block diagram illustrating a basic hardware configuration of a client and a printing apparatus.
FIG. 3 is a flowchart illustrating a printing process in the printing system.
FIG. 4 is a flowchart illustrating a printing process in the printing system.
FIG. 5 is a flowchart illustrating a printing process in the printing system.
FIG. 6 is a schematic diagram of print data transmitted from a web print server to a client.
7A is a diagram illustrating a data configuration example of a print request transmitted from the client terminal to the print server, FIG. 7B is a diagram illustrating a data configuration example of a print instruction transmitted from the client terminal to the printing apparatus, FIG. 3C is a diagram illustrating an example of a data configuration of a print request transmitted from a client terminal to a print server.

Claims (1)

A printing system in which a server device, a client device, and a printing device are communicably connected,
Transmitting means for transmitting print data from the server device to the printing device via the client device in response to a print request from the client device;
A recognition unit that recognizes unsuccessful printing in the printing device in the client device;
Requesting means for requesting the server device to retransmit print data when the recognition of the unsuccessful printing of the print data in the printing device is recognized by the recognition means;
A printing system comprising: a retransmission unit configured to determine whether the print data requested by the request unit can be retransmitted, and to transmit the print data to the client device when the retransmission is permitted. .

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