JP2000069244A - Image reading device - Google Patents

Abstract

(57) [Problem] To provide a small-sized, low-cost image reading apparatus capable of reading required information and data when reading a two-sided document, and capable of reading a two-sided document. SOLUTION: Front image reading means 2 to 6, 31 for reading an image on the front surface of a document in a transport path of an automatic document feeder.
Back image reading means 15 to read an image on the back of the document
And printing means 18 and 19 for performing a printing process to the reference printing position when the reference printing position separated by a predetermined distance from the end of the reading area on the surface of the original in the conveyance path reaches the printing location in the conveyance path. In the image reading apparatus capable of reading double-sided originals, when the back side image reading units 15 to 17 are reading the originals when the reference printing position of the originals reaches the printing location, the printing units 18 and 1 are used.
9 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus having an automatic document feeder, and more particularly to an image reading apparatus capable of reading both sides of an original and printing required data on the read original. Related to the device.

[0002]

2. Description of the Related Art Conventionally, an image reading apparatus such as a facsimile or an image scanner attaches a marking (finished stamp) to a document after reading or transmission in order to confirm that the document has been read or transmitted. Are known. Also, in an image reading device such as an optical file, the amount of input document is enormous, and when collating input data with a document requires considerable labor, a printer is mounted on the image reading device. 2. Description of the Related Art There is known a method of printing arbitrary characters, numbers, symbols, and the like on a document. The types of printers listed above include wire dot printers, daisy wheel printers, thermal printers,
Ink jet printers, bubble jet printers, and the like are known, but each has a problem when used for printing after reading a document. For example, thermal printers require the use of thermal paper and cannot respond to various types of documents, and impact-type printers such as wire dot printers and daisy-wheel printers have the problem of high noise during printing. is there. For inkjet printers and bubble jet printers,
This was inconvenient because it had to be placed above the original reading surface for printing. Here, the reason for installing the inkjet printer at the top will be specifically described, for example,
If a printer is installed in the lower part of the document conveying path for printing in a face-down paper discharging apparatus in order to perform page ordering, ink or the like must be blown up, and clogging is likely to occur. Therefore, it is necessary to install it at the top and blow it out from the top.
It should be noted that printing on a document in a facsimile or the like refers to printing characters or codes indicating items such as the above-mentioned transmitted status and transmission date / time. Therefore, when the printer is installed below the document conveying path, a wire dot printer or a daisy wheel printer is used even if the printing noise is large. By the way, the print target position (reference print position) on the original by the printer as described above is
In order to enable correct printing even in the case of multi-feeding of originals, a predetermined distance from the end of the reading area on the front side of the original (for example, 10 mm from the rear end of the reading area) is often set. .

[0003]

However, when the reading means on the back side of the document is located downstream of the reading means on the front side of the document, the reading on the front side of the document is completed and the printing of the document is completed. When the target position (reference printing position) reaches the printing position on the transport path, the back side document may still be being read depending on the setting of the reading area on the front side and the back side of the document. In this case, the printing operation must be performed while the back side of the document is being read, and it is difficult to correctly print the document while the document is being transported. There was a problem that can not be done. In addition, when multiple originals are fed, the surface of the lowermost original is read from the multiple originals that are fed, and a printed mark is printed on the original surface of the lowermost original. A document on which a normal printed mark is printed has both sides of the front and back sides read. However, even if a printed mark indicating that both the front and back sides of the original have been read is printed on the lowermost original sheet of the multi-fed original, the back of the original is not actually read. Become. The present invention has been made in order to solve the conventional problems as described above, and has a printing unit that can print required information and data at the time of reading a two-sided original at a small size and low cost. It is an object of the present invention to provide an image reading apparatus capable of reading a two-sided original, and also has a printing means capable of individually printing required information and data for each side of the two-sided original on both sides of the original. It is an object to provide a possible image reading device.

[0004]

According to another aspect of the present invention, there is provided an image reading apparatus for reading an image on a front surface of a document in a conveyance path of an automatic document feeder. Back-side image reading means for reading an image on the back side of the document, and when a reference printing position separated by a predetermined distance from an end of a reading area on the front surface of the document in the conveyance path reaches a printing location in the conveyance path. In a double-sided document readable image reading apparatus having a printing unit that performs a printing process at the reference printing position, when the reference printing position of the document reaches the printing location, the back side image reading unit is performing document reading. In the case of, it is characterized in that the printing process by the printing means is stopped, when reading the original, giving priority to the reading operation of the back of the original,
By canceling the printing operation on the document, the reading operation on the back surface of the document can be performed normally. Claim 2
An image reading apparatus according to the present invention includes: a front surface image reading unit that reads an image on the front surface of a document; a back surface image reading unit that reads an image on the back surface of the document; A printing means for performing a printing process to the reference printing position when a reference printing position separated by a predetermined distance from an end of the reading area on the surface of the document reaches a printing location in the transport path. In the reading device, when the reference printing position of the document reaches the printing location, if the back image reading unit is performing document reading, the reading of the back image is stopped, and printing by the printing unit is performed. It is characterized by executing processing, when reading a document, priority is given to the printing operation on the document, and by canceling the reading operation on the back of the document, It is possible to perform the printing operation on the document. According to a third aspect of the present invention, in the image reading apparatus according to the second aspect, after the printing process is completed, the reading of the backside image that has been stopped is restarted, and the reading of the backside image is restarted. Thus, the printing operation on the document can be performed normally without canceling the reading operation on the back surface of the document. According to a fourth aspect of the present invention, in the image reading apparatus according to the second aspect, the stop of the reading is performed by:
It is characterized in that the printing operation by the printing means is temporarily interrupted only, and the reading of the back side image is temporarily stopped, so that the printing operation on the original can be performed normally without canceling the reading operation on the back side of the original. It can be performed.

According to a fifth aspect of the present invention, there is provided an image reading apparatus for reading an image on the front surface of a document, and a back image reading device for reading an image on the back surface of the document in a conveyance path of the automatic document feeder. A front printing means for performing a printing process at a reference printing position at a predetermined distance from an end of a reading area on the front surface of the document; Printing means, wherein the front side printing means performs a printing process when a reference printing position on the front surface of the document reaches a printing location of the front side printing means in the transport path, and the back side printing means includes A double-sided original readable image reading apparatus configured to perform a printing process when a reference printing position on the back side of the original reaches a printing location of the back side printing means in the original. At the time of reading, the printing process by the front side printing unit and the printing process by the back side printing unit are performed, and the printing process is performed on both sides of the read document, and the printing process is performed on the front surface and the back surface of the document. it can. According to a sixth aspect of the present invention, in the image reading apparatus according to the fifth aspect, the printing process performed on both sides of the read document includes a process of reading an image on the front surface of the document and a process of reading an image on the back surface of the document. Is performed after both of the reading processes are completed, and the printing process can be performed on the front and back surfaces of the document after the reading of the front and back surfaces of the document is completed. According to a seventh aspect of the present invention, in the image reading device according to any one of the first to sixth aspects,
It is characterized in that the communication means with the external device is SCSI, and it is possible to connect to many external devices by using a general-purpose interface.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is a side view showing a schematic overall configuration of an embodiment of the image reading apparatus of the present invention. FIG.
The image reading apparatus according to the present embodiment shown in FIG. 1 includes a platen glass 1 on which a document is placed, a first mirror 2 (2 ′) for changing the direction of reflected light from the document by 90 degrees, and an integral part of the first mirror 2. Then, an illumination lamp 3 (3 ') for illuminating the original, a second mirror 4 (4') for changing the direction of the reflected light by 90 degrees, and a direction of the reflected light 90 formed integrally with the second mirror 4 A third mirror 5 (5 ') for changing the degree, a CCD 6 for photoelectrically converting reflected light from a document and outputting an electric signal, an assembly part in which the first mirror 2 and the illumination lamp 3 are integrally formed, and a second mirror A traveling motor 7 for driving an assembly part in which the fourth and third mirrors 5 are integrally formed; a document tray 8 for setting and placing a document on an automatic document reading apparatus; Pickup roller for picking up and sending out one by one 9, a pair of registration rollers 10 for transporting the document to the reading position B, a transport drum 11 and a transport roller 12, a pair of transport rollers 13 and a pair of discharge rollers 14 for transporting the read document to a paper discharge location,
Close contact image sensor 15 for reading back side original
And an RSBU 16 which is a circuit board which holds the contact image sensor 15 and performs A / D conversion processing for converting an analog signal to a digital signal and shading correction.
And a white roller 17 that conveys the document and serves as a white reference member for shading correction, and an endorser unit 1 that is a printing unit that prints on the document that has been read.
8. An SBU 20, which is a circuit board that holds the CCD 6 and performs analog processing and A / D conversion processing, and an SCU 21, which is a signal processing board,
RCU 23 for storing an image read by contact image sensor 15 and IOB for performing input / output conversion with the outside
24, a lens 31 for condensing the reflected light from the third mirror 5 on the CCD 6, a paper discharge tray 32 on which originals sequentially read and discharged are placed, and the like. The first
When reading an original on the platen glass 1, the assembly formed integrally with the mirror 2 and the illumination lamp 3 and the assembly formed with the second mirror 4 and the third mirror 5 are shown in FIG.
The original is read and scanned while being moved from the respective positions of the first mirror 2 ', the illumination lamp 3', the second mirror 4 ', and the third mirror 5' by the traveling motor 7. When scanning is performed, the document is temporarily fixed at each of the first mirror 2, the illumination lamp 3, the second mirror 4, and the third mirror 5 in FIG.

The operation of reading an original in the image reading apparatus of this embodiment shown in FIG. 1 is as follows. When reading a one-sided original placed on the platen glass 1, the original is illuminated by an illumination lamp 3 'integrated with the first mirror 2'.
And the reflected light is reflected by the first mirror 2 ′ and the second mirror 4 ′ and the third mirror 5 ′ which are integrally formed.
Is scanned by Thereafter, the reflected light is converged by the lens 31 and is irradiated on the CCD 6 to be photoelectrically converted. In this case, the first mirror 2 ′ and the illumination lamp 3 ′ formed as one body, and the second mirror 4 ′ and the third mirror 5 ′ formed as one body are driven by the traveling body motor 7 as a driving source. Arrow A
The scanning of the original on the original platen glass 1 is performed by these movements. Next, when reading the double-sided document stacked on the document tray 8, the document passes through the reading position B on the lower surface of the transport drum 11 by the pickup roller 9, the pair of registration rollers 10, the transport drum 11, and the transport roller 12. The sheet is further discharged onto the discharge tray 32 by the pair of transfer rollers 13 and the pair of discharge rollers 14. The surface of the document being conveyed is
When passing through the reading position B, the light is emitted by the illumination lamp 3 moving near the reading position B, and the reflected light is
1 Scanning is performed by the mirror 2 and the second mirror 4 and the third mirror 5 which are integrally formed. Thereafter, the reflected light is converged by the lens 31 and is irradiated on the CCD 6 to be photoelectrically converted. Note that the pickup roller 9 and the registration roller pair 10 are driven by a sheet feeding motor (not shown), and the conveyance drum 11, the conveyance roller 12, and the conveyance roller pair 1 are driven.
3. The discharge roller pair 14 is a conveyance motor (not shown)
Driven by Next, the conveyed document advances to the reading position C where the contact image sensor 15 is installed, and the back surface of the document is read. The contact image sensor 15 includes an LED (not shown) as a light source, a lens (not shown), and a sensor element (not shown). When the document passes through the reading position C, the surface (back surface) opposite to the front surface of the document read at the reading position B is placed on the L in the contact image sensor 15 installed at the reading position C.
Irradiation is performed by an ED (lamp), and the reflected light is converged by a lens in the contact image sensor 15, irradiated to a sensor element in the contact image sensor 15, and photoelectrically converted. A white roller 17 is provided at an opposite portion of the contact image sensor 15 across the document, and is used as a white member for shading correction at the time of reading by the contact image sensor 15. Conveyance roller pair 13 and discharge roller pair 14
Between them, there are provided an endor unit 18 and an endor platen 19 which are printing means. The endorser 18 is composed of a printing section composed of alphabetic letters and numerals marked with ink and a pressure solenoid (not shown) for pressing the printing section in the direction of the endor platen. The manuscript is stopped on the endorser 18,
It is fixed in the pressing direction by an endor platen 19, and alphabet characters and numerals can be printed on the document surface by pressing of the endor 18 (printing section).

FIG. 2 is a block diagram showing a schematic overall configuration of an image reading apparatus according to an embodiment of the present invention. In the image reading apparatus of FIG. 2, in addition to the configuration shown in FIG. 1, an optional IPU 26 which is a circuit capable of performing arbitrary image processing on an image signal, a main body operation panel 28 having a display unit and an operation input unit, A that supplies and controls the power of various electrical components
DU30 and a circuit N for performing various corrections and the like on the image signal
An IPU 33, a connector 34 for connecting the SCU 21 and the optional IPU 26, a SiBC 35 for managing image data storage means, and a SCSI for managing SCSI input / output.
A controller 36 and a CP for controlling the entire image signal processing
U37 and ROM 38 for storing programs, setting values, etc.
And a RAM 39 for temporarily storing image data and control signals
And The reflected light of the document that has entered the CCD 6 on the SBU 20 is converted into an analog signal having a voltage value corresponding to the light intensity in the CCD 6. The analog signal is divided into odd bits and even bits and output. The analog image signal is input to an A / D converter after a dark potential portion is removed by an analog processing circuit (not shown) on the SBU 20, an odd bit and an even bit are combined, and the gain is adjusted to a predetermined amplitude. It is converted into a digital signal. The digitized image signal is transmitted to NIPU3 on SCU21.
After performing shading correction, gamma correction, MTF correction, and the like, the data is binarized and output as a video signal together with a page synchronization signal, a line synchronization signal, and an image clock. The video signal output from NIPU 33 is output to option IPU 26 via connector 34. The video signal output to the option IPU 26 is subjected to predetermined image processing in the option IPU 26, and is input to the SCU 21 again. Again SCU21
The video signal input to is input to a selector (not shown). The other input of the selector is NIPU3
3 is a video signal output from the optional IPU 26, and whether or not image processing is performed by the option IPU 26 can be selected.

[0009] The video signal output from the selector is a SiB which manages image data storage means (DRAM).
It is input to C35 and stored in an image memory composed of a DRAM. The image data stored in the image memory is
The data is sent to the SCSI controller 36 and transferred to an external device such as a personal computer. The analog image signal photoelectrically converted by the contact image sensor 15 is digitally converted on the RSBU 16. The digitized image signal is R
After the shading correction is performed on the SBU 16, R
It is sent to CU23. The RCU 23 controls an image memory and an image data memory configured by a DRAM.
The image data is temporarily stored in an image memory and then transferred to the SCU 21. The image data sent from the RCU 23 to the SCU 21 and the image data output from the SiBC 35 on the SCU 21 can be switched.
The data is transferred to the SI controller 36. A CPU 37, a ROM 38, and a RAM 39 are mounted on the SCU 21. The CPU 37 controls a SCSI controller 36 to communicate with an external device such as a personal computer.

The CPU 37 also controls the timing of the traveling body motor 7, which is a stepping motor, the sheet feeding motor, and the transport motor. The ADU 30 has a function of relaying power supply of electrical components used for an automatic document feeder (ADF) unit. An input port connected to the CPU 37 on the SCU 21 is connected to the main body operation panel 28 via the IOB 24. A start switch (not shown) and an abort switch (not shown) are mounted on the main body operation panel 28. When each switch is pressed, the CPU 37 detects that the switch has been turned on via the input port. Here, the rubber belt impact type printer will be described with reference to FIG. 3, which is a view showing a schematic configuration of a rubber belt impact type printer as a printing means. As shown in FIG. 3, a rubber belt impact type printer 51 includes a rubber stamp 52 in which characters and the like are formed on the surface of a roll belt, a hammer 53 that pushes up the rubber stamp 52 for printing, and a printing ink applied to the surface of the rubber stamp 52. Ink roll 54 is provided. The rubber belt impact type printer 51 referred to as an endor in the present embodiment is small in size, usually called a micro printer, and can be installed in a transport path of an automatic document transport mechanism (ADF). When used in an apparatus, it can be configured small and at low cost, and can print required information and data on a document after image reading. Furthermore, since the printed document is printed on the reading surface of the document, the printed document is always read, so the document is read only by checking the document surface instead of turning the document over and checking it. You can confirm that. Also, noise during printing is smaller than that of other impact-type printers.

FIG. 4 is an enlarged view of a printing unit according to another embodiment of the present invention. The difference between the embodiment shown in FIG. 4 and the embodiment shown in FIG. 1 lies in that two sets of an endor unit and an endor platen are arranged between a pair of conveying rollers 13 and a pair of paper discharge rollers 14. The printing means for the front surface in FIG. 4 is the endor unit 18-1 and the endor platen 19-1, and the printing means for the back surface is the endor unit 18-2 and the endor platen 19-2. The transport roller pair 13, the paper discharge roller pair 14, and other components not shown are the same as those in the embodiment shown in FIG. The endorser 18-1 and the endorser 18-2 are composed of a printing section composed of alphabetic characters and numerals marked with ink and a pressure solenoid (not shown) for pressing the printing section in the direction of the endor platen. The manuscript paper for which both the front and back reading processes have been completed is stopped between the endorser 18-1 and the endorser 18-2, and the endorser platen 1 is stopped.
The document is fixed in the pressing direction by 9-1 and 19-2, and alphabet characters and numerals are printed on both sides of the original surface and the original back surface by the pressure of the endorser 18-1 and 18-2 (printing unit).

FIG. 5 is a diagram showing an example of a positional relationship when a problem occurs in that printing is performed by the printing unit during execution of the document reading process by the reading unit of the back surface of the document. FIG. 5 shows that, for example, the reading position C on the document read by the reading means on the back surface of the document is located downstream of the reading position B on the document read by the reading means on the front surface of the document.
Is set from the front end of the original 61 to the position D on the original 61, and the setting of the back side read area of the original 61 is set from the front end of the original 61 to the rear end of the original 61. are doing. In the case of FIG. 5, the reading of the front surface of the original 61 from the front end of the original 61 to the position D on the original 61 is completed, and the reference print position E of the original 61 is thereafter set to the printing location where the printing unit performs printing. This shows a state in which the document has been transported until it reaches F. At this point, the back surface of the document 61 is still being read at the reading position C. That is, in the case of FIG. 5, the back side of the original is still being read, that is, the original 61 is being conveyed to receive the reading of the back side of the original, and during the conveyance, the front side is printed at the printing place F. The printing operation has to be performed. Therefore, in the case of FIG. 5, even if the printing operation is performed, the original to be printed is moved for reading the back side of the original, so that the correct printing cannot be performed. Is performed, the document 61 is displaced and the like, so that a problem occurs that the document 61 cannot be normally operated.

In FIG. 5, a reading area is set on the front surface of the document, and a position E which is a predetermined distance (for example, 7 mm before) from a position D which is a rear end position of the front surface reading area is printed by the printing means. The reference printing position to be used was set. As described above, when the reference printing position is a position that is a predetermined distance before the rear end position of the reading area, the reference printing position changes due to the fluctuation of the rear end position of the reading area. It can be said that it is a relative positional relationship with the position. The reference printing position in this case is referred to as a reading area reference printing position as described as position E in FIG. On the other hand, as in the conventional case, the trailing edge of the document is detected and a certain distance (eg, 7 mm before) from the trailing edge is detected.
When printing by the printing means, the reference printing position changes due to the fluctuation of the rear end position of the original paper.
This can be said to be a relative positional relationship with the rear end position of the original paper. The reference printing position in this case is referred to as a document-based printing position.
For example, when the printing unit is installed so as to perform printing a predetermined distance before the rear end of the back surface of the document in FIG. 5, the back side reading area is the entire back surface of the document sheet. It is considered to be the print position.

FIG. 6 is a diagram showing a positional relationship of an embodiment of the present invention in which reading processing and printing processing are performed only on the front surface of the lowermost original paper and the back surface of the uppermost original paper in a multi-fed original. is there. In FIG. 6, two original sheets are multi-fed, the front side of the lower original sheet is read at the front reading position B, and the back side of the upper original sheet of the multi-fed original is the back reading position. Read at C.
The multi-fed original after the reading process is temporarily stopped at a position where at least a part thereof is sandwiched between the front print position E and the back print position F, and the lower original paper at the front print position E The printing process is executed on the front side by the front side printing unit, and the printing process is executed by the back side printing unit on the back side of the original sheet above the multifeed document at the back side printing position F. Therefore, even when the original is multi-fed, the printing process is executed only on the read surface of the read original paper. The reference printing position in FIG. 6 is determined in the same manner as the reference printing position in the example of FIG.

FIGS. 7 (a) to 7 (c) show the S used for external communication and endor control in the image reading apparatus of the present invention.
It is a chart showing contents of one embodiment of a CSI control command (ModeSelect command). FIG. 7 (a)
Is a chart showing the entire configuration of the SCSI control command, where rows represent bits and columns represent bytes. In FIG. 7A, “Endor” is added to the third 2-byte line.
Ser Control ", which controls the endorser. This function is set as an option, and is a command valid only for a model having this function. In the default state after power-on,
The endorser is turned off. FIG.
It is a figure which shows the bit structure of the row of "Endorser Control" of (a). As shown in FIG.
Two bits of “0” and “1” bits are used for endor control, and the other bits are reserved bits.
FIG. 7C is a chart showing an example of the hexadecimal code used for the endorser control in FIG. 7B. In the chart of FIG. 7C, when the code is “0H”, it is a code when the endorser is not used. "H" is 16
Indicates a hex code. “1H” is a code when the endorser is used on the basis of the above-mentioned document. Similarly, "2H" is a code when the endorser is used on the basis of the above-mentioned reading area, and "3H" is reserved.

FIG. 8 is a flow chart showing the operation of the image reading apparatus according to the first embodiment of the present invention in the case where the back side of the original is prioritized and the printing operation is canceled to perform the normal back side reading. is there. In step S1 in FIG. 8, the image reading position B in FIGS.
The reading process of the original surface image at is started. In step S2, the image reading position C in FIGS.
, The reading process of the back side image of the original is started. In step S3, it is determined whether the reading of the front side of the document has been completed. If the reading has been completed (step S3: Yes), the process proceeds to step S4. If not completed (step S3: No), the process proceeds to step S4. The process of step S3 is repeated again. In step S4, it is determined whether or not the reference print position on the document surface has reached the print position of the endorser. If it has reached (step S4: Yes), the process proceeds to step S4.
Proceeds to No. 5 and has not reached (Step S4: No)
, The process of step S4 is repeated again. Step S
In step 5, it is determined whether the reading of the back side of the document has been completed. If the reading has been completed (step S5: Yes), the process proceeds to step S6, and if not completed (step S5).
5: No), the process proceeds to step S7. In step S6, a printing process (printing operation) by the endorser is performed,
The process ends. In step S7, the printing process (printing operation) by the endorser is canceled, and the process ends.

FIG. 9 is a flow chart showing the operation of the image reading apparatus according to the second embodiment of the present invention in the case where the printing operation is normally performed by giving priority to the printing operation and canceling the reading operation of the back surface of the original. is there. Step S in FIG.
In step 11, the reading process of the original surface image at the image reading position B in FIGS. 1 and 5 is started. In step S12, the reading process of the document back surface image at the image reading position C in FIGS. 1 and 5 is started. In step S13, it is determined whether the reading of the front side of the document has been completed. If the reading has been completed (step S13: Yes)
Then, the process proceeds to step S14, and if not completed (step S13: No), the process of step S13 is repeated again. In step S14, it is determined whether or not the reference print position on the document surface has reached the print position of the endorser. If it has reached (step S14: Yes), the process proceeds to step S15, and if it has not reached (step S14). In S14: No), the process of step S14 is repeated again. In step S15, it is determined whether the reading of the back side of the document has been completed. If the reading has been completed (step S15: Yes), the process proceeds to step S17. If not (step S15: No), the process proceeds to step S17. Proceed to step S16. In step S16, the back surface reading process at the image reading position C is canceled. In step S17, the printing process (printing operation) by the endorser is performed, and the process ends.

FIG. 10 shows a third embodiment of the present invention in which a printing operation and a document back surface reading operation are normally performed by temporarily stopping (interrupting) the reading operation of the back surface of the document only during the printing operation. 5 is a flowchart showing the operation of the image reading apparatus according to the embodiment. In step S21 in FIG. 10, the reading process of the image on the front side of the document at the image reading position B in FIGS. 1 and 5 is started. Step S
At 22, the process of reading the image on the back side of the document at the image reading position C in FIGS. 1 and 5 is started. In step S23, it is determined whether the reading of the front side of the document has been completed. If the reading has been completed (step S23: Yes)
In step s), the process proceeds to step S24. If the process is not completed (step S23: No), the process in step S23 is repeated. In step S24, it is determined whether or not the reference print position on the document surface has reached the print position of the endorser, and if it has reached (step S24: Yes).
In step S25, the process proceeds to step S25, and if not reached (step S24: No), the process in step S24 is repeated. In step S25, it is determined whether the reading of the back surface of the document has been completed. If the reading has been completed (step S25: Yes), the process proceeds to step S26. If not completed (step S25: No), the process proceeds to step S26. Proceed to step S27. In step S26, the printing process (printing operation) by the endorser is performed, and the process ends. In step S27, the back surface reading process at the image reading position C is temporarily stopped. In step S28, the printing process (printing operation) by the endorser is performed. In step S29, the back surface reading process at the image reading position C is restarted. In step S30, it is determined whether or not the reading of the back side of the document has been completed. If the reading has been completed (step S30: Yes), the process ends, and if the reading has not been completed (step S30:
No), the step S30 is repeated.

In the case of the third embodiment, the back side reading operation is temporarily stopped (interrupted), and the printing operation is performed during the interruption. In the reading operation, a motor (not shown) and each transport roller are used. Since the reading scan is performed by conveying the document, the stop operation or the start-up operation cannot be performed instantaneously due to the nature of the motor. In the present embodiment, a stepping motor is used as a document conveying motor, and a method of gradually reducing the speed called a through-down when the motor is stopped is used as a motor control method of the image reading apparatus, and a through-up is performed at the time of startup. The reading process is performed at the time of stopping and starting the motor by performing the reading process in accordance with the motor speed by using a method of gradually increasing the speed.

FIG. 11 is a flowchart showing the operation of the image reading apparatus according to the fourth embodiment of the present invention, which performs a printing operation on both the front and back sides of a document after the reading operation on the front and back sides of the document. In step S41 in FIG. 11, the reading process of the original surface image at the image reading position B in FIG. 6 is started. In step S42, the reading process of the document back surface image at the image reading position C in FIG. 6 is started. In step S43, it is determined whether the reading of the front side of the document has been completed. If the reading has been completed (Yes in step S43), the process proceeds to step S44.
If the processing has not been completed (step S43: No), the processing of step S43 is repeated again. In step S44, it is determined whether the reading of the back side of the document has been completed. If the reading has been completed (step S44: Yes), the process proceeds to step S45, and if not completed (step S44).
44: No), the process of step S44 is repeated again. In step S45, the reference print positions on the front side and the back side of the original are respectively set to the endorsers 18-1 and 18-2 for each side.
It is determined whether or not the print positions E and F have been reached. If the print positions have been reached (step S45: Yes), the process proceeds to step S45.
46, and if it has not arrived (step S45: N
In step o), the process of step S45 is repeated again. In step S46, the printing process (printing operation) by the endorser is performed, and the process ends. In step S7, the printing process (printing operation) by each of the endorsers 18-1 and 18-2 for each surface is executed, and the process ends. By configuring and operating as described above, even if the image reading apparatus has a configuration in which the distance between the endorser and the back surface reading unit is short, a printing unit that can print required information and data when reading a two-sided document is provided. It is possible to provide an image reading apparatus capable of reading double-sided originals. Also,
In order to select the print position in the endorser of each of the above embodiments of the present invention, as shown in FIG.
mode Select command is used. Therefore,
Since SCSI is a typical communication means for the digital image reading apparatus, the above-described operation can be obtained without adding a configuration such as a communication means for a special control code.

[0021]

As described above, in the image reading apparatus according to the first aspect of the present invention, when the original arrives at the printing position and the back side original is being read, the back side reading operation is prioritized and the printing operation is performed. , The back surface reading operation can be performed normally. In the image reading apparatus according to the second aspect of the present invention, when the document arrives at the print position and the back side document is being read, the printing operation is prioritized and the back side reading operation is cancelled, thereby performing normal printing. Actions can be taken. In the image reading apparatus according to the third aspect of the present invention, when the document arrives at the printing position, if the back side document is being read, the back side reading operation is stopped and the performed printing operation is resumed, whereby the back side reading is performed. The printing operation can be performed without canceling the operation. In the image reading apparatus according to the fourth aspect of the invention, when the original reaches the printing position and the back original is being read, the back reading operation is temporarily stopped to perform the printing operation, thereby performing the back reading operation. The printing operation can be performed normally without canceling. In the image reading apparatus according to the fifth aspect of the present invention, the printing process is performed for each of the front and back reading surfaces, so that only the normally read surface of the document can be individually printed. Since it is possible, it is possible to accurately recognize the content to be re-read at the time of double feeding of the original. According to the image reading apparatus of the present invention,
Since it is possible to print simultaneously on the front and back sides of the original after the reading is completed, the time required for the printing operation can be reduced. According to the image reading apparatus of the present invention, a general-purpose interface is used for communication with an external device.
Since CSI is used, it is possible to connect to many reading devices without developing a new external device interface, and to obtain the effects of claims 1 and 2.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic overall configuration of an embodiment of an image reading apparatus of the present invention.

FIG. 2 is a block diagram illustrating a schematic overall configuration of an embodiment of the image reading apparatus of the present invention.

FIG. 3 is a diagram showing a schematic configuration of a rubber belt impact type printer as a printing unit.

FIG. 4 is an enlarged view of a printing unit according to another embodiment of the present invention.

FIG. 5 is a diagram showing a positional relationship at the time of occurrence of a problem that printing is performed by a printing unit during execution of a document reading process by a reading unit of a back surface of a document.

FIG. 6 is a diagram showing a positional relationship according to an embodiment of the present invention.

FIGS. 7A to 7C are diagrams showing contents of an embodiment of a SCSI control command (Mode Select command) used for communication with the outside and endorser control in the image reading apparatus of the present invention.

FIG. 8 is a flowchart illustrating an operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 9 is a flowchart illustrating an operation of the image reading apparatus according to the second embodiment of the present invention.

FIG. 10 is a flowchart illustrating an operation of the image reading apparatus according to the third embodiment of the present invention.

FIG. 11 is a flowchart illustrating an operation of the image reading apparatus according to the fourth embodiment of the present invention.

[Explanation of symbols]

1 ... original platen glass, 2 ', 1 platen mirror,
3, 3 ': illumination lamp, 4, 4': second mirror, 5, 5 ': third mirror, 6: CCD, 7.
..Vehicle motor, 8 ... original tray, 9 ... pickup roller, 10 ... registration roller pair,
11: transport drum, 12: transport roller, 13
... Transport roller pair, 14 ... Discharge roller pair, 1
5 ... contact image sensor, 16 ... RSBU,
17 ... white roller, 18 ... endor unit, 19 ... endor platen, 20 ... S
BU, 21 ... SCU, 23 ... RCU, 24 ...
・ IOB, 26 ・ ・ ・ Option IPU, 28 ・ ・ ・ Main unit operation panel, 30 ・ ・ ・ ADU, 33 ・ ・ ・ NIP
U, 34: Connector, 35: SiBC, 36
..SCSI controller, 37, CPU, 38
... ROM, 39 ... RAM, 51 ... rubber impact printer, 52 ... rubber stamp, 53 ... hammer, 54 ... ink roll, 61 ... read original

Claims (7)

[Claims] 1. A front surface image reading means for reading an image on the front side of a document, a back side image reading means for reading an image on the back side of the document, and an end of a reading area on the front side of the document in a conveyance path of the automatic document feeder. Printing means for performing a printing process at a reference printing position separated by a predetermined distance, the printing means,
In a two-sided original readable image reading apparatus configured to perform a printing process when a reference printing position on the front surface of a document reaches a printing location in the transport path, the reference printing position of the document is a printing location in the transport path. An image reading apparatus that stops the printing process by the printing unit when the back side image reading unit is executing the document reading process when the image reading unit reaches the second position. 2. A front-side image reading unit for reading an image on the front side of a document, a back-side image reading unit for reading an image on the back side of the document, and an end of a reading area on the front side of the document in a conveyance path of the automatic document feeder. Printing means for performing a printing process at a reference printing position separated by a predetermined distance, the printing means,
In a two-sided original readable image reading apparatus configured to perform a printing process when a reference printing position on the front surface of a document reaches a printing location in the transport path, the reference printing position of the document is a printing location in the transport path. If the back side image reading unit is performing the reading process of the back side image of the document when the image data reaches, the reading process by the back side image reading unit is stopped, and the printing process by the printing unit is executed. Characteristic image reading device. 3. The image reading apparatus according to claim 2, wherein after the end of the printing process, the reading of the back side image that has been stopped is restarted. 4. The image reading apparatus according to claim 2, wherein the suspension of the reading is a temporary suspension only during a period in which the printing unit executes a printing process. 5. A front side image reading means for reading an image on the front side of a document, a back side image reading means for reading an image on the back side of the document, and a reading area on the front side of the document in a conveyance path of the automatic document feeding apparatus. A front-side printing unit that performs printing at a reference printing position that is separated by a predetermined distance; and a back-side printing unit that performs printing at a reference printing position that is separated by a predetermined distance from an end of a reading area on the back of the document. Means for performing a printing process when the reference printing position on the front surface of the document reaches the printing position of the front surface printing means in the transport path; and A two-sided document readable image reading device configured to perform a printing process when the reference printing position of the front side is reached; By performing the printing processing by the back surface printing unit and the printing processing by the image reading apparatus characterized by performing the print processing for both sides of the document. 6. A printing process to be performed on both sides of the document, wherein the printing process is performed after both the process of reading the image on the front surface of the document and the process of reading the image on the back surface of the document are completed. The image reading device according to claim 5, wherein 7. The image reading apparatus according to claim 1, wherein communication means for communicating with the external device is SCSI.