JP2008182671A - Document reading apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document reading apparatus capable of automatically specifying a document to be read and processed again because of occurrence of multi-feed or processing error. <P>SOLUTION: An automatic document feeder 16 of a document reading apparatus for reading a group of documents in order to perform FAX transmission comprises: a first reading optical system 35 for reading a front side MF of the document M; a second reading optical system 36 for reading a rear side MR of the document M; and a stamp mechanism 50 for pressing a stamp S on the rear side MR of each document M in order to identify a FAX transmission state of the document M. In a case where a retransmission mode is being set in FAX transmission, control is performed to specify the document M to be retransmitted in accordance with the status of the stamp S of each document M read by the second reading optical system 36. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a document reading apparatus having a function of providing an identification mark on the back side of a document read by a reading unit.

  For facsimile machines that scan a group of documents and send them by facsimile, or digital multifunction devices equipped with a facsimile function, when a fax transmission of a document is performed normally, a stamp is marked on the back side of the document, so that the fax is transmitted normally. There are models equipped with a function called “completed stamp” that makes it easy to distinguish a document that has been sent and a document that has not yet been faxed.

  In a model equipped with a function for stamping a stamp on the back side of such a fax-transmitted document, the user sees only the front surface (document surface) of the fax-transmitted document and determines that there is no stamp and resends it by mistake. The stamp detection unit detects the presence or absence of a completed stamp, and when detected, displays a message that the original has been faxed on the display unit and notifies the user of the fax by sending a fax. Has been proposed (see, for example, Patent Document 1).

JP-A-9-93380

The reason why the document is not sent normally in FAX transmission is as follows:
(1) “Skip skipping” in which one or a plurality of originals after the next page are scanned together with the original on the transmission page by multifeed (multiple feeding) of the originals.
(2) "Communication error" during FAX transmission
(3) “Memory full”, where the memory for storing the image data of the document exceeds the capacity
Etc.

  For example, when two originals are multi-fed for the cause of the FAX transmission abnormality, the first original is read and sent by FAX, but the stamp is not stamped and is not actually read. Since a completed stamp is stamped on the back side of the second document, it is difficult to accurately identify the document even if the user attempts to identify the document to be retransmitted based on the presence or absence of the completed stamp. In particular, when the FAX transmission abnormalities (1) to (3) occur in combination, it becomes extremely difficult to specify a document to be retransmitted, which is a complicated operation.

  Further, the technique of Patent Document 1 displays a FAX transmission completed on a document for which a completed stamp is detected. However, when multi-feeding of a document occurs, a completed stamp is placed on the back side of the FAX transmitted document as described above. Will not be stamped, and a stamp will be stamped on the back side of a fax untransmitted document. Therefore, it is not possible to correctly specify a document to be retransmitted simply by detecting the presence of a stamp and displaying it.

  The present invention is intended to solve the above problem, and provides a document reading apparatus capable of automatically specifying a document that needs to be read again and reprocessed due to a multi-feed, a processing error, or the like. The purpose is that. It is another object of the present invention to provide a document reading apparatus that can automatically specify a document surface that needs to be read and reprocessed in the case of a double-sided document.

  The gist of the present invention for achieving the object lies in the inventions of the following items.

[1] Reading means for reading the front and back surfaces of each original in a group of originals composed of a plurality of originals;
An identification mark applying means for applying an identification mark to the back surface of each document read by the reading means;
Reread setting means for setting rereading of the group of documents read by the reading means;
A document specifying unit for specifying a document to be reprocessed according to the status of an identification mark on the back surface of each document read by the reading unit when rereading is set by the reread setting unit;
A document reading apparatus characterized by comprising:

  In the above invention, the reading means reads the front surface (original surface) of each original document, and the identification mark applying means applies an identification mark to the back surface of each original read by the reading means. To do. When the reread setting unit is set to perform rereading, the document specifying unit needs to perform reprocessing according to the status of the identification mark obtained by reading the back side of each document by the reading unit. A document with a certain number, that is, a document to be reprocessed is specified.

  The status of the identification mark includes, for example, the presence / absence and type of the identification mark of each original, and an arrangement pattern such as how the presence / absence and type of the identification mark are arranged between a plurality of consecutive originals. Is included. In addition, when the original reading apparatus is applied to a scanner device that reads an original and converts the original image into electronic data, the document to be reprocessed refers to an original in which a reading error has occurred and the original group is read. When the original reading apparatus is applied to a facsimile apparatus that performs facsimile transmission, it refers to an original (an untransmitted original) in which a transmission error or the like has occurred, and an electronic storage apparatus that reads the original and converts the original image into electronic data and stores it. When the present document reading apparatus is applied, it refers to a document having a data storage error or the like. That is, the above-described reprocessing includes processing such as re-reading of a document having a reading error, re-sending of a document having a transmission error, and re-storing of a document having a data storage error.

  As a result, for example, (1) skipping by multi-feed at the time of reading a document, (2) processing error of the document itself, (3) data storage due to over-capacity of the storage medium for storing the data of the read document (document surface) Even when an abnormality such as an error occurs alone or in combination, a document that needs to be reprocessed can be accurately identified. In addition, it is set to perform re-reading through the re-read setting unit, and the original to be reprocessed is automatically specified based on the reading result (situation) of the identification mark given to the back of each original. Is done.

[2] When re-reading is set by the re-read setting unit, when a document having the identification mark not attached to the back side is read, the document on the next page of the document is set as the document to be reprocessed. The document reading device according to [1], characterized in that the document reading device is specified.

  In the above invention, when the identification mark is not read from the back side of the original by rereading the original group, the original of the next page of the original is multi-fed and skipped at the time of initial reading. Specify the document to be reprocessed. In addition, multi-feed may occur over three or more consecutive pages. In this case, multiple pages of documents with no identification mark appear on the back side, but only the first page of the multiple pages. It will be in the state of being read normally. Even in such a multi-feed in which three or more pages are transported in an overlapping manner, the document on the next page of the document without an identification mark is repeatedly processed for each page, so that the document to be reprocessed can be That is, it is possible to accurately specify that the document from the next page of the first page document to the document with the identification mark is a reprocessing target.

[3] When re-reading is set by the re-read setting unit, when a document having an identification mark indicating a processing error is read on the back side, the document is specified as the document to be reprocessed. The document reading device according to [1], wherein

  In the above invention, when an identification mark indicating a processing error in which a document is not processed normally (reading, FAX transmission, data storage, etc.) is read from the back side of the document by rereading the document group, the document itself Is not processed, it is specified as a document to be reprocessed.

[4] When re-reading is set by the re-read setting unit, when a document having an identification mark indicating a processing error is read on the back side, a continuous identification mark is added in front of the document. The document reading apparatus according to claim 1, wherein a first page in an undocumented document is specified as the document to be reprocessed.

  In the above invention, when the document group is re-read, the identification mark indicating the processing error is read from the original document on the intermediate page, and the identification mark indicating the processing error is not read from the original document of the previous page continuous from the original document. Represents the processing status for the first page of a document that does not have an identification mark in front of the document on the middle page, and therefore the document on the first page is specified as the document to be reprocessed. Since the document from the next page of the first page to the document with the identification mark indicating the processing error is a multi-feed document, it is specified as the document to be reprocessed in the process [2].

[5] When re-reading is set by the re-read setting unit, after reading a document having an identification mark indicating a processing error on the back side, the identification mark is placed on the back side of all the subsequent pages. If there is no document, all documents after the document having the identification mark indicating the processing error on the back side are specified as the document to be reprocessed. Any one of [1] to [4] The document reading apparatus according to Item 1.

  In the above invention, when a document group is re-read and an original document with an identification mark indicating a processing error is read on the back side, the identification mark is not read on all the documents on and after the next page of the document. Are skipped from the document with the identification mark indicating the processing error to the document on the last page due to the capacity of the storage medium storing the image data of the document being exceeded. For this reason, the originals of all pages after the original with the identification mark indicating the processing error are specified as the reprocessing target original. As a result, it is possible to accurately specify the document skipped after the processing error.

[6] The identification mark includes a single-side identification mark used for a single-sided original and a double-sided identification mark used for a double-sided original.
Any one of [1] to [5], wherein the document specifying unit specifies the document to be reprocessed when it is determined that the identification mark read by the reading unit is the single-sided identification mark. 2. A document reading apparatus according to claim 1.

  In the above invention, when the document is read again, it is automatically determined that the document is a single-sided document based on the type of identification mark given to the document. For example, the user manually inputs the type of document to be read again in advance. There is no need to make any settings.

[7] Reading means for reading the front and back surfaces of each original in a group of originals composed of a plurality of originals;
An identification mark applying means for applying an identification mark to the back surface of each document read by the reading means;
Reread setting means for setting rereading of the group of documents read by the reading means;
A document specifying unit that specifies a document surface to be reprocessed according to a status of an identification mark on the back surface of each document read by the reading unit when rereading is set by the reread setting unit;
A document reading apparatus characterized by comprising:

  In the above invention, for a group of documents consisting of a plurality of documents, the reading means reads the front and back surfaces (document surfaces) of each document, and the identification mark applying means places an identification mark on the back surface of each document read by the reading means. Give. When the reread setting unit is set to perform rereading, the document specifying unit needs to perform reprocessing according to the status of the identification mark obtained by reading the back side of each document by the reading unit. A document surface with a certain number, that is, a document surface to be reprocessed is specified.

  It should be noted that the contents described in [1] can be similarly applied to the situation of the identification mark and the original surface to be reprocessed.

  As a result, for example, (1) skipping by multi-feed at the time of reading a document, (2) processing error of the document itself, (3) data storage due to over-capacity of the storage medium for storing the data of the read document (document surface) Even when an abnormality such as an error occurs alone or in combination, a document surface that needs to be reprocessed can be accurately identified. In addition, it is set to perform re-reading through the re-read setting unit, and the original surface to be reprocessed is automatically determined based on the reading result (situation) of the identification mark given to the back side of each original. Identified.

[8] When re-reading is set by the re-read setting unit, when a document having the identification mark not attached to the back side is read, the back side of the document and the front side of the next page of the document are read again. The document reading apparatus according to [7], characterized in that the document surface is specified as a processing target document surface.

  In the above invention, if the identification mark is not read from the back side of the original by rereading the original group, the back side of the original and the front side of the next page are multi-fed and skipped at the time of initial reading. Therefore, the back surface of the document and the front surface of the document on the next page are specified as the document surface to be reprocessed. In addition, multi-feed may occur over three or more continuous pages. In this case, multiple pages of documents without an identification mark appear on the back, but the front of the first page of the multiple pages. Only the back side of the document on the last page is normally read. Even in such a multi-feed in which three or more pages are transported in an overlapping manner, reprocessing is performed by repeatedly setting the back side of the original without an identification mark and the front side of the original of the next page for each page. It is possible to accurately specify the original surface to be reprocessed, that is, from the back surface of the original document on the first page to the front surface of the original document with the identification mark.

[9] When re-reading is set by the re-read setting means, when a document having an identification mark indicating a processing error on at least one of the front and back sides is read, The document reading apparatus according to [7], wherein a surface of which the identification mark indicates a processing error is specified as the document surface to be reprocessed.

  In the above invention, when the original group is re-read, an identification mark indicating a processing error in which at least one of the front and rear surfaces of the original document is not normally processed (reading, FAX transmission, data storage, etc.) is read from the reverse side of the original document. In this case, since the surface itself indicating the processing error is not processed, it is specified as the document surface to be reprocessed.

[10] When re-reading is set by the re-read setting unit, when an original having an identification mark indicating a processing error on the front side is read on the back side, an identification mark is added in front of the original. The document reading apparatus according to [7], wherein the surface of the first page in a document that has not been processed is specified as the document surface to be reprocessed.

  In the above invention, when the original group is re-read, the identification mark indicating the processing error on the front surface is read from the original document on the middle page, and if the identification mark is not read from the original document on the previous page continuous from the original document, the processing error is indicated. Since the identification mark indicates the processing status of the front page of the document that does not have an identification mark in front of the document with the identification mark, the surface of the document on the first page is specified as the document surface to be reprocessed. To do. Since the document from the next page of the first page to which an identification mark indicating a processing error has been added is a multi-feed document, from the back of the first page to the surface of the document to which an identification mark indicating a processing error has been added The document surface to be reprocessed is specified in the process [7].

[11] When re-reading is set by the re-read setting unit, an identification mark indicating a processing error on the front or back side, or a processing error on the back side, or a processing error on the front side and an unprocessed side is displayed. If there is no identification mark on the back side of all the subsequent pages after reading the original document attached to the back side, the identification mark indicating the processing error is included in the original mark attached to the back side. [7] to [10], wherein a surface indicating a processing error, a surface indicating that the identification mark is unprocessed, and front and back surfaces of all originals after the original are specified as the original surface to be reprocessed The document reading apparatus according to any one of the above.

  In the above invention, when the original group is re-read, the processing error on the front and back sides, the processing error on the back side, or the original with the identification mark indicating that the front side is a processing error and the back side is unprocessed is given to the back side. After reading, if the identification mark is not read on all the documents after the next page of the document, the above processing error is caused by the capacity of the storage medium for storing the image data of the document. The last page of the manuscript has been skipped. Therefore, among the documents with identification marks indicating processing errors on the back side, the side where the identification marks indicate processing errors and the side where the identification marks indicate unprocessed (front or back side or back side) and the following pages of the original The front and back surfaces of all the originals are specified as the original surface to be reprocessed. As a result, it is possible to accurately specify the document surface skipped after the processing error.

[12] The identification mark includes a single-side identification mark used for a single-sided original and a double-sided identification mark used for a double-sided original.
[7] to [11], wherein the document specifying means specifies the document surface to be reprocessed when it is determined that the identification mark read by the reading means is the double-sided identification mark. The document reading apparatus according to claim 1.

  In the above invention, when the document is read again, it is automatically determined that the document is a double-sided document based on the type of the identification mark given to the document. For example, the user manually inputs the type of document to be read again in advance. There is no need to make any settings.

[13] The reading unit includes a first reading unit that reads the front side of the document and a second reading unit that reads the back side of the document. [1] to [12] The document reading apparatus according to any one of the above.

  According to the document reading apparatus of the present invention, it is possible to automatically specify a document that needs to be read again and reprocessed due to a multi-feed or processing error. Further, in the case of a double-sided document, it is possible to automatically specify a document surface that needs to be read and reprocessed due to a multi-feed or processing error.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First embodiment]
In the first embodiment, a case where a single-sided document is processed will be described. FIG. 1 is a control block diagram showing the configuration of an image forming apparatus 10 provided with a document reading apparatus 11 according to an embodiment of the present invention. The image forming apparatus 10 is configured as a digital multi-function machine having a scanner function, a printer function, a facsimile function, and the like in addition to a copy function for reading a document and forming and outputting a corresponding image on a recording sheet. Also, a function for compressing and storing image data obtained by reading a document, a function for transmitting stored image data to an external device using e-mail or FTP (File Transfer Protocol), and a stored image Has a function of calling and printing. In addition, when reading a document and performing facsimile transmission (FAX transmission), a function of stamping (applying) a stamp as an identification mark for identifying whether or not the document has been transmitted normally (finished stamp function); A function of automatically specifying and retransmitting a document that needs to be retransmitted because the FAX that has not been normally transmitted by FAX has not been transmitted is provided (hereinafter, the operation mode of this function is referred to as “retransmission mode”). .

  In order to realize such functions, the image forming apparatus 10 includes an operation unit 12, a system control unit 13, an engine control unit 14, a document reading optical system 15, and an automatic document feeder (ADF). 16, a printer engine 17, and a finisher 18.

  The operation unit 12 includes a touch panel type display unit 19 that displays various operation screens and guidance screens. The operation unit 12 receives various operations from the user through the display unit 19 and outputs the operation information to the system control unit 13. ing. The operations received from the user include operations for setting / canceling the completed stamp function and setting / canceling the retransmission mode in FAX transmission, in addition to operations relating to copying and FAX transmission. The operation unit 12 has a function as reread setting means for setting rereading (retransmission mode on / off) of a document (document group) read in FAX transmission.

  The system control unit 13 includes a CPU (Central Processing Unit) 20 as a central processing unit that performs overall control of the overall operation of the image forming apparatus 10. The CPU 20 of the system control unit 13 is configured to control the operation of the entire device based on operation information from the operation unit 12 or an external device that performs remote operation. In addition, when the retransmission mode is set by FAX transmission, the system control unit 13 serves as a document specifying unit that specifies a document (document to be reprocessed) that needs to be retransmitted because the FAX has not been transmitted. And a function for controlling each unit to retransmit the specified document.

  FIG. 2 shows a main circuit configuration of the system control unit 13. A CPU memory 22, a Flash ROM (Flash Read Only Memory) / HDD (Hard Disk Drive) 23, and an NVRAM (NonVolatile Random Access Memory) 24 are connected to the CPU 20 of the system control unit 13 via a bus 21. An image memory 26, an image processing ASIC (Application Specific Integrated Circuit) 27, an image rotation ASIC 28, an image compression / decompression ASIC 29, a DMA (Direct Memory Access) controller 30, and a FAX unit 31 are connected to each other. Further, a CCD (Charge Coupled Device) image sensor / LD (Laser Diode) 32 is connected to the image processing ASIC 27.

  The CPU memory 22 is a volatile memory used for storing a program executed by the CPU 20 and a work memory when the CPU 20 executes the program.

  The Flash ROM in the Flash ROM / HDD 23 is configured as a small-capacity storage device, and is used for storing control programs, general-purpose operating system programs, and the like. The image forming apparatus 10 operates by executing a startup program at the time of start-up so that the program in the Flash ROM is expanded in the CPU memory 22. The HDD is configured as a large-capacity storage device and is used for storing image data.

  The NVRAM 24 is a memory that retains stored contents even when the power is turned off. The NVRAM 24 stores predetermined data to be saved even after the power is turned off, such as various parameters unique to the apparatus.

  The image memory 26 is a volatile memory used for storing compressed image data. Further, it is configured to function as a memory for temporarily storing image data of a document to be faxed.

  The image processing ASIC 27 has a function of performing various types of image processing on image data input / output to / from the CCD unit / printer unit 32.

  The image rotation ASIC 28 has a function of performing rotation processing of image data. The image compression / decompression ASIC 29 has a function of performing a compression process for storing image data in the image memory 26 and a decompression process for decompressing the compressed image data and returning it to the original size.

  The DMA controller 30 functions to transfer the contents of the image memory 26 to the NVRAM 24. The CPU 20 can access the image memory 26 through the DMA controller 30 to read / write data. The DMA controller 30 is also configured to be able to transfer data between the CPU memory 22 and the image memory 26.

  The FAX unit 31 functions to transmit and receive image data via the public line 33.

  The CCD image sensor / LD 32 is a CCD image sensor which is a reading element provided in the original reading optical system 15 for reading an original image and an LD provided in a laser unit in the laser printer engine 17. The CCD image sensor is configured to output read image data of the document to the image processing ASIC 27, and the LD emits a laser corresponding to the image data input from the image processing ASIC 27 in order to form an image. It is configured as follows.

  In the document reading operation, the image data output from the CCD image sensor is subjected to various image corrections by the image processing ASIC 27, input to the image compression / decompression ASIC 29, and subjected to compression processing by the image compression / decompression ASIC 29. Thereafter, it is temporarily stored in the image memory 26 by the DMA controller 30.

  In the output operation to the recording paper, the image data stored in the image memory 26 is read by the DMA controller 30 and input to the image compression / expansion ASIC 29, and after being subjected to the expansion processing by the image compression / expansion ASIC 29, The image is input to the image rotation ASIC 28 as necessary, subjected to rotation processing by the image rotation ASIC 28, output to the LD through the image processing ASIC 27, and then formed on the recording paper.

  In addition, an operation unit 12 (not shown in FIG. 2), a communication control unit (not shown) that communicates with an external device through a LAN (Local Area Network), and the like are connected to the bus 21.

  The engine control unit 14 shown in FIG. 1 includes a CPU 34 that shares operation control of a mechanism unit related to image formation. The CPU 34 of the system control unit 13 communicates operation commands and statuses with the CPU 20 of the system control unit 13, and based on instructions from the CPU 20, the document reading optical system 15, the automatic document feeder 16, the printer engine 17, and the finisher 18. The document reading and image forming operations are controlled by performing operation control such as the above.

  FIG. 3 shows the configuration of the document reading optical system 15 and the automatic document feeder 16.

  The document reading optical system 15 includes a first reading optical system 35 for reading the front surface (document surface) of the document, and a second reading optical system 36 for reading the back surface of the document. It has a function as reading means for reading the front and back surfaces.

  The first reading optical system 35 is disposed on the lower side of the automatic document feeder 16, and the reading element is constituted by a CCD image sensor. The light L from the document is CCD imaged by a plurality of reflecting mirrors 37 and lenses 38. The optical reduction system leads to the sensor. The first reading optical system 35 is configured to output the image data of the document surface read by the CCD image sensor to the system control unit 13 through the engine control unit 14 (see FIG. 1).

  The second reading optical system 36 is attached to the automatic document feeder 16 and has a contact sensor system in which a reading element is configured by a CIS (Contact Image Sensor). The second reading optical system 36 is configured to output image data on the back side of the document read by the CIS to the system control unit 13 through the engine control unit 14 (see FIG. 1).

  The automatic document feeder 16 is provided with a document tray 41 for setting a document M for copying or FAX transmission at the upper part of the apparatus body 40, and the read document M is discharged at the lower part of the apparatus body 40. A discharge tray 42 is provided.

  The document tray 41 is capable of stacking a plurality of documents M (document group) in a bundle, and a pickup for feeding the documents M set on the document tray 41 one by one to the document delivery side of the document tray 41. A roller 43 is arranged. On the document delivery side of the pickup roller 43, a carry-in passage 44 that guides the document M fed from the document tray 41 to the reading position RP1 by the first reading optical system 35 is extended.

  A reading position RP <b> 1 by the first reading optical system 35 is disposed below the pickup roller 43. The carry-in passage 44 is formed to bend laterally from the pickup roller 43 toward the reading position RP1, and in the carry-in passage 44, two pairs of conveyance rollers 45 that convey the document M to the reading position RP1 side are passages. It is arranged along.

  The document M sent from the document tray 41 to the carry-in passage 44 passes through the carry-in passage 44 so that the orientation of the paper surface is turned upside down, and the surface facing the lower side (surface MF) at the reading position RP1 is the first reading optical. It is read by the system 35.

  An unloading passage 46 that guides the document M that has passed the reading position RP1 to the discharge tray 42 is extended on the document delivery side of the reading position RP1, and the document M is conveyed to the discharge tray 42 side in the unloading passage 46. A pair of conveying rollers 47 and discharge rollers 48 are disposed along the path.

  Above the carry-out passage 46, a partition wall 49 extending substantially parallel to the carry-out passage 46 is provided. A second reading optical system 36 is attached to the lower surface of the partition wall 49 facing the carry-out passage 46 at a substantially intermediate position between the transport roller 47 and the discharge roller 48 so as to face the carry-out passage 46.

  The portion where the optical axis of the second reading optical system 36 intersects with the carry-out path 46 is a reading position RP2 by the second reading optical system 36. At the reading position RP2, the upper side of the document M passing through the carry-out path 46 The second reading optical system 36 reads the surface (back surface MR) that faces the head.

  A stamp mechanism 50 is attached in the vicinity of the document feed side of the discharge roller 48 on the lower surface of the partition wall 49. The stamp mechanism 50 operates when the stamp function is set by FAX transmission, and the surface facing the upper side of the document M with respect to the document M discharged to the discharge tray 42 by the discharge roller 48 (back surface MR). The stamp S is configured to be stamped.

  For the stamp S, a normal stamp (SA) indicating that the original M has been read by the first reading optical system 35 and has been processed normally (FAX transmission completed), and has not been processed normally (FAX not transmitted). Two types of abnormal stamps (SB) indicating) are prepared (see FIG. 4). When the completed stamp function is set, the stamp mechanism 50 impresses a normal stamp on the back surface MR of the original M which has been processed normally by reading the front surface MF by the first reading optical system 35. For the original M that has not been completely processed, it has a function as an identification mark giving means that operates to stamp an abnormal stamp on the back surface MR.

  Note that FAX transmission performed with the completed stamp function set is executed by real-time transmission in which the FAX transmission is simultaneously performed while reading a document, and FAX transmission performed without the completed stamp function set is read. The image data of the original is temporarily stored in the image memory 26, and the stored contents are executed by memory transmission for FAX transmission.

  A printer engine 17 shown in FIG. 1 functions as an image forming unit that forms and outputs an image corresponding to input image data on a recording paper by an electrophotographic process, and includes a recording paper transport device and a photoconductor (not shown). The apparatus is configured as a so-called laser printer including a drum, a charging device, a laser unit, a developing device, a transfer separation device, a cleaning device, a fixing device, and the like.

  The finisher 18 has a function of performing post-processing such as punching, binding, and folding on the recording paper on which an image is formed by the printer engine 17.

  Further, the document reading apparatus 11 according to the present embodiment includes an automatic document feed having an operation unit 12 as a reread setting unit, a document reading optical system 15 as a reading unit, and a stamp mechanism 50 as an identification mark applying unit. The apparatus 16 includes a system control unit 13 having a CPU 20 as document specifying means.

  Next, a document reading operation by the document reading device 11 included in the image forming apparatus 10 having the above configuration and an operation of automatically specifying and retransmitting a document to be reprocessed (FAX not transmitted) will be described.

  In reading a document by the document reading device 11, as shown in FIG. 3, the user places a bundle (document group) of a plurality of pages of documents M on the document tray 41 of the automatic document feeder 16 with the surface MF facing upward. When the scanning / copying / fax transmission operation is performed through the operation unit 12 (see FIG. 1), automatic reading of the document M is started.

  First, the pick-up roller 43 of the automatic document feeder 16 rotates in the clockwise direction, picks up one document on the top page, and feeds it into the carry-in passage 44. In the carry-in passage 44, the two pairs of transport rollers 45 rotate in a predetermined direction and transport the document M downward. The document M conveyed downward while curving the carry-in passage 44 has the front surface MF directed downward at the reading position RP1, and when passing through the reading position RP1, the image (original image) on the surface MF is the first reading. Read by the optical system 35.

  The leading end side of the document M that has passed through the reading position RP1 is sent to the carry-out passage 46 side. In the carry-out passage 46, the transport roller 47 and the discharge roller 48 rotate in a predetermined direction, and the document M is discharged to the discharge tray 42.

  Thereafter, the same reading operation is repeated for the document M on the next page and thereafter, and when the reading of the document M on the last page is completed, the reading operation of the document group is completed. When the reading of the original group is an operation in FAX transmission, the CPU 20 of the system control unit 13 controls the FAX unit 31 to transmit the read original group image data to the external apparatus via the public line 33. To do.

  Also, if the user has set the stamp function when performing FAX transmission, the document M that has been successfully processed after the FAX transmission is completed immediately before being discharged to the discharge tray 42. A normal stamp (SA) is stamped on the back surface MR of the document M by the stamp mechanism 50. A “communication error” during FAX transmission (continuous processing is performed without stopping transmission after the error occurrence page) or “memory full” occurs when the image memory 26 storing the image data of the original M has exceeded its capacity. For a document M that has not been processed normally because the FAX transmission has not been completed, an abnormal stamp (SB) is stamped on the back surface MR of the document M by the stamp mechanism 50.

  When a “communication error” or “memory full” that requires interruption occurs, the reading operation is stopped for all the pages after the next page, and the stamp S is not stamped and is discharged to the discharge tray 42.

  Further, when the user wants to resend a page that has not yet been faxed, the group of documents that have been faxed using the completed stamp function is set again on the document tray 41 of the automatic document feeder 16, and the retransmission mode is set and read. Perform the start operation. In reading the original in this retransmission mode, the stamp mechanism 50 stops operating, and the front and back surfaces of the original group are automatically read in page order. That is, when each document M passes through the reading position RP1, the image on the front surface MF is read by the first reading optical system 35, and when it passes through the reading position RP2, the image on the back surface MR (presence / absence and type of the stamp S). ) Is read by the second reading optical system 36.

  The image data of the back surface MR of each document M read by the second reading optical system 36 is sent to the CPU 20 of the system control unit 13, and the CPU 20 shows the status of the stamp S stamped on the back surface MR of each document M. Accordingly, the FAX unit 31 and the like are controlled so as to specify the original M to be retransmitted and perform the retransmission.

  Hereinafter, the pattern of the stamp S stamped on the document M having a plurality of pages will be described in detail.

  FIGS. 4 to 9 show examples of stamp S patterns in a multi-page document M in the case of a document group with 3 or 4 pages. 4 to 9, the stamp pattern is represented as shown in “How to read the drawing” in FIG. 4 in a state where the document M of each page is viewed from the back MR side and from the back side to the near side of the page. Page 1, page 2, page 3, (page 4), “normal stamp” (SA) is indicated by “●” at the lower end of the rear surface MR of page 3, and “no stamp” indicates page 2 is shown with no display so as to be at the lower end portion of the rear surface MR, and “abnormal stamp” (SB) is indicated by “◯” so as to be at the lower end portion of the rear surface MR of page 1. Further, regarding the FAX transmission state of the document M, FAX transmission completed (normal) is “transmitted”, and FAX untransmitted (abnormal) is “untransmitted”. The types of stamp patterns are classified according to the following phenomena A to F, and 58 types are exemplified.

A: Normal transmission B: Document multi-feed C: Communication error (transmission aborted on error page) or memory full D: Communication error (transmission other than error page)
E: Document multi-feed and communication error (transmission aborted on error occurrence page) or memory-full combination F: Document multi-feed and communication error (transmission other than error occurrence page) FIG. 10 to FIG. The stamp pattern shown in FIG. 9 is shown in a list corresponding to the type, FAX transmission completion page number, FAX retransmission target page number, and remarks (symptoms).

  For example, when all the documents M of a plurality of pages are normally transmitted by FAX, as shown in FIG. 4A, the normal stamp SA “●” is printed on the back surface MR of the document M of each page (pages 1 to 4). Is stamped.

  When the multi-feed of the document M occurs, as shown in FIGS. 4B-1 to 4B-6, a page without the stamp S is generated on the back surface MR. For example, as shown in FIG. 4 (B-4), when multi-feed occurs in pages 2 and 3 in all four-page documents, page 2 is not stamped, and FAX transmission is completed on page 1 , 2, and 4, the untransmitted FAX is page 3 (see the stamp pattern (B-4) in FIG. 10). Also, as shown in FIG. 4 (B-5), when multi-feed occurs on pages 2, 3, and 4 in all 4-page documents, pages 2 and 3 are not stamped, and FAX transmission is completed. Are pages 1 and 2, and fax not transmitted are pages 3 and 4 (see the stamp pattern (B-5) in FIG. 10).

  That is, the document (M1) on which the stamp S is not stamped on the back side is conveyed with the document (M2) of the next page overlapped on the back side, and the surface of the document (M2) of the next page is conveyed. Is not read due to the presence of the original (M1) not stamped with the stamp S on the back surface that overlaps in front of it. Even when a plurality of pages are multi-feeded as shown in FIGS. 4B-2, B-3, and B-5, the same phenomenon occurs for each page without a stamp. Therefore, when there is a page without a stamp, the page next to the page without the stamp is specified as a target of FAX retransmission.

  When a communication error (transmission aborted on an error occurrence page) or memory full occurs, as shown in FIGS. 5 (C-1) to (C-3), a page whose transmission is aborted or memory full due to a communication error If an abnormal stamp SB “◯” is stamped on the page and there are pages thereafter, the document image is not read and is ejected and the stamp S is not present. For example, as shown in FIG. 5 (C-1), if a communication error (transmission aborted on an error occurrence page) or a memory full occurs on page 1 in all three pages, an abnormal stamp SB is displayed on page 1. As a result of the stamping, pages 2 and 3 are not stamped, and faxes not transmitted are pages 1, 2 and 3 (all pages) (see stamp pattern (C-1) in FIG. 10).

  When a communication error (transmission other than an error occurrence page) occurs, as shown in FIGS. 5D-1 to D-6, an abnormal stamp SB is stamped only on the page where the communication error has occurred, A normal stamp SA is stamped on a page that has been normally faxed. For example, as shown in FIG. 5 (D-1), when a communication error occurs only on page 1 in all three-page documents, an abnormal stamp SB is stamped on page 1, and pages 2 and 3 are normal. The stamp SA is in a stamped state, and FAX 1 not transmitted is page 1 (see stamp pattern (D-1) in FIG. 10).

  When a document multi-feed and a communication error (transmission aborted on the error occurrence page) or memory full occur in combination, as shown in FIGS. 6 (E-1) to (E-11), stamping is performed by multi-feed. A page without S occurs, and an abnormal stamp SB “◯” is stamped on the page where a communication error or memory full occurs. For example, as shown in FIG. 6 (E-7), multi-feed occurs on pages 1, 2, and 3 in a four-page document, and a communication error (transmission aborted on error page) or memory full indicates page 3 In this case, an abnormal stamp SB is imprinted on page 3, pages 1, 2, and 4 are not stamped, and FAX untransmitted pages are pages 1, 2, 3, and 4 (all pages) (stamp in FIG. 11). (See Pattern (E-7)).

  When a transmission error or a memory full error occurs due to a communication error, an abnormal stamp SB is imprinted on the back side of the page where the error has occurred, and all pages after the next page are discharged without being read. Therefore, when pages without a stamp continue to the last page after the abnormal stamp SB, all pages after the page where the abnormal stamp SB is stamped are specified as FAX retransmission targets.

  When a document multifeed and a communication error (transmission other than an error occurrence page) occur in combination, as shown in (F-1) to (F-31) of FIGS. A page without the stamp S is generated, and an abnormal stamp SB “◯” is stamped on the page where the communication error has occurred. For example, as shown in FIG. 9 (F-23), multi-feed occurs in pages 1, 2, and 3 in a document of all four pages, and a communication error occurs for the multi-feeded pages 1, 2, and 3. When (transmission other than an error occurrence page) occurs and transmission of page 4 is completed, pages 1 and 2 are not stamped, abnormal stamp SB is imprinted on page 3, normal stamp SA is imprinted on page 4, Fax untransmitted pages are pages 1, 2, and 3 (see stamp pattern (F-23) in FIG. 13).

  As described above, in the FAX transmission of the document group, various patterns with or without the normal / abnormal stamp are generated according to the symptoms of B to F. However, by simply detecting only the presence / absence of the normal / abnormal stamp, The document to be retransmitted by FAX cannot be accurately specified. For example, in the case of (E-4) or (F-22) where the document multi-feed and the communication error are combined, and in the case of (E-7), (F-23), (F-24), etc. Both pages 1 and 2 are not stamped by multi-feed, but the FAX transmission status of page 1 is determined by the type of stamp S of page 3.

  That is, a document with a stamp S on the back side and a document without a stamp S that is continuous in front of it are a bundle of documents that are multi-feeded. The stamp S indicating the processing result for the image on the front page of the first page is stamped on the back side of the last page of the bundle. Therefore, if the stamp S stamped on the back surface of the last page of a bundle of documents (a document stamped with the stamp S on the back surface and a document not stamped with the stamp S continuous in front of it) is a normal stamp SA. For example, this bundle of first pages is processed normally, and if it is an abnormal stamp SB, it can be determined that this bundle of first pages is an abnormal page that has not been processed normally.

  In this way, when a communication error that continues or cancels the document multi-feed and the FAX transmission is combined, a stamp that is consecutively preceded by the type (normal / abnormal) of the stamp S of the last page of the multi-feed document. It is determined whether or not it is necessary to retransmit the fax of the first page of the page with no.

In the document reading apparatus 11 of the present embodiment, in the retransmission mode for FAX transmission of a single-sided document,
(1) “Multifeed document specifying process” that specifies a document on the next page of the document as a re-transmission target when a document without a stamp on the back side is read
(2) “Abnormal document specifying process” that specifies a document to be retransmitted when a document with an abnormal stamp on the back side is read
(3) When a document with an abnormal stamp stamped on the back side is read, the first page document in the document without a stamp stamped in front of the document is identified as the target of retransmission. Specific processing "
(4) After reading a document with an abnormal stamp on the back side, if there are no stamps on the back side of all the documents on and after the next page, all pages after the document with the abnormal stamp on the back side are scanned. “Abnormal Subsequent Page Identification Process” that identifies a manuscript for re-transmission
By combining the processes (1) to (4), the original to be retransmitted is specified. Specifically, by executing the processing described below, automatic specification and re-transmission of a re-transmission target document covering each of the processes (1) to (4) are realized.

  FIG. 14 shows a flow of operation of the FAX transmission and completed stamp function by the document reading apparatus 11, and FIG. 15 shows a flow of operation of the retransmission mode in FAX transmission.

  First, a basic FAX transmission operation when the retransmission mode is not used will be described. As shown in FIG. 14, when an operation (transmission job) for performing FAX transmission is started (Start), the CPU 20 of the system control unit 13 determines whether the retransmission mode set by the user is valid / invalid ( If the setting is valid (step S101; Yes), the process from step S117 onward in FIG. 15 is performed. If the setting is invalid (step S101; No), the process from step S102 onward in FIG. 14 is performed.

  When the setting of the retransmission mode is invalid, it is determined whether the stamp function already set by the user is valid / invalid (step S102). When the setting is valid (step S102; Yes), the processing after step S108 is performed. If the setting is invalid (step S102; No), the processing after step S103 is performed.

  When the completed stamp function is not set (step S102; No), the document reading apparatus 11 reads an image on the surface of the document (step S103) because the operation is performed by memory transmission, and the read image data on the surface of the document is stored in the image memory 26. In the main memory area (step S104).

  Subsequently, it is determined whether or not the image memory 26 has exceeded the capacity (step S105). If the memory is full (step S105; Yes), for example, the display unit 19 (see FIG. 1). In this case, the occurrence of memory full is displayed and the user is notified and the transmission job is stopped (End). When the memory full does not occur and the image data of the read original is normally stored in the image memory 26 (step S105; No), it is determined whether or not the read original is the last page (step S106). .

  If the read original is not the last page (step S106; No), the process returns to step S103. If the read document is the last page (step S106; Yes), the image data of all pages of the document stored in the main memory area of the image memory 26 is fax-transmitted (step S107), and the main data is transmitted after the transmission is completed. End the job (End).

  If memory full does not occur in the series of processing from step S103 to step S107, all pages of the document are normally read and transmitted by FAX.

  On the other hand, if the completed stamp function is set (step S102; Yes), the stamp S corresponding to the FAX transmission status (normal / abnormal) of the original and the real-time transmission that simultaneously transmits the FAX while reading the original is stamped. For the operation.

  First, the image on the front side of one page of the original is read (step S108), and the read image data on the front side of the original is stored in the main memory area of the image memory 26 (step S109). Subsequently, it is determined whether or not a memory full has occurred (step S110). If the image data of the read original is normally stored in the image memory 26 (step S110; No), it is stored in the image memory 26. The image data of one page of the original is fax-transmitted (step S111), and it is determined whether or not the fax transmission of the page has ended normally without causing a communication error (step S112).

  If the fax transmission is completed normally (step S112; Yes), the normal stamp SA is stamped on the back side of the document (step S113), and it is determined whether or not the document transmitted by fax is the last page (step S114).

  If the document transmitted by FAX is not the last page (step S114; No), the process returns to step S108. If the document transmitted by FAX is the last page (step S114; Yes), the transmission job is terminated (End).

  If a memory full occurs in step S110 (step S110; Yes), or if a communication error occurs in step S112 (step S112; No), an abnormal stamp SB is stamped on the back side of the document (step S115). Then, it is determined whether or not the document on the next page can be continuously faxed (step S116).

  If the communication error is capable of fax transmission (step S116; Yes), the processing returns to step S108. If the communication error is impossible to fax or the memory is full (step S116; No), for example, the display unit 19 (FIG. 1). (Refer to Fig. 2), a communication error occurrence or memory full occurrence indication is displayed and the user is notified and the transmission job is terminated (End).

  In the series of processing from step S108 to step S116, if no communication error or memory full occurs, all pages of the document are normally read and faxed, and a normal stamp SA is stamped on the back side of each document. When a communication error that can be continuously transmitted has occurred, an abnormal stamp SB is stamped on the back side of the original of the error occurrence page. In addition, when a communication error or a memory full error that causes the FAX transmission to stop is generated, the original document before the error is normally read and transmitted by FAX, and a normal stamp SA is stamped on the back side of each completed document. Thus, the original after the error is not transmitted by FAX, and the abnormal stamp SB is stamped only on the back side of the original of the page where the error has occurred.

  Next, a flow when the retransmission mode is used will be described. Note that, in the present embodiment, whether or not to retransmit the FAX is determined depending on the type of the stamp S that first appears in the subsequent page of the original without the stamp S. The control is divided into the area and the temporary memory area, the image data of the document determined to be retransmitted is stored in the main memory area, and the document that may need to be retransmitted in the temporary memory area The image data is temporarily saved.

  That is, if the read page is a page where the stamp S is not stamped on the back side, the image data of the page is stored in the temporary memory area of the image memory 26, and then the page where the stamp S is stamped is stored. When read, the page that has been stamped with the stamp S read this time and the page stored in the temporary memory area are treated as a group of multi-feeded pages. More specifically, the stamped page of the stamp S read this time is the last page of a group of multi-feeded bundles, and the page stored in the temporary memory area is the page stamped of the stamp S. The page is not stamped with a continuous stamp S.

  Therefore, when the type of the stamp S is the normal stamp SA, the first page in the bundle of pages, that is, the first page in the temporary memory area is treated as a FAX transmitted page. When the type of stamp S is an abnormal stamp SB, the first page in the temporary memory area is treated as a FAX untransmitted page and is subject to retransmission (abnormal first page specifying process).

  In addition, since all the pages stored in the temporary memory area are pages not stamped with the stamp S, the pages stored in the temporary memory area are stored in the second and subsequent pages stored in the temporary memory area. The page that is stamped with the stamp S, which is the next page after the last page, is the next page after the page that is not stamped with the stamp S. Therefore, the second and subsequent pages in the temporary memory area and the page stamped with the stamp S are targeted for retransmission (multifeed document specifying process).

  Also, when the last page is reached while the process of saving the image data of the page not stamped with the stamp S in the temporary memory area is repeated, the page is due to a communication error that causes memory full or FAX transmission to be canceled. Since the page has been skipped to the last page, all pages in the temporary memory area are to be retransmitted (abnormal succeeding page specifying process). At this time, since the page immediately before the page stored in the temporary memory area is supposed to be the page with the abnormal stamp SB, that page is also subject to retransmission (abnormal document specifying process).

  Hereinafter, each step of this process will be described in detail. When performing automatic re-transmission of a FAX untransmitted document, the user sets a retransmission mode through the operation unit 12 after performing a series of processing from step S101, step S102, and step S108 to step S116 shown in FIG. Then, the original group is set again on the original tray 41 of the original reading apparatus 11 and an operation for starting reading the original group is performed (Start in FIG. 14).

  The CPU 20 of the system control unit 13 determines that the setting of the retransmission mode is valid (step S101; Yes), and executes processing for performing FAX retransmission (retransmission job) after step S117 shown in FIG. .

  First, a flag for holding the completed stamp state of the previous page is set to ON (step S117). The flag used in this process indicates whether or not the previous page is a stamp stamped page, and flag ON indicates that the previous page was “stamped” (initial value). Flag off indicates that the previous page was “no stamp”.

  If the page read this time is a page with a stamp S stamped and the previous page is also a page with a stamp S stamped, it turns out that the page read this time is a page that has not been multi-feeded. A stamp S marked with indicates the FAX transmission status of the page. Therefore, if the page read this time has a stamp, it is confirmed by a flag whether the previous page has a stamp. If the flag is set (the previous page is present), the stamp stamped on the currently read page is stamped. If S is a normal stamp SA, it is recognized that the page is normally transmitted by FAX, and if it is an abnormal stamp SB, the page is determined as a retransmission target.

  Next, the document reader 11 simultaneously reads the images on the front and back sides of the document (step S118), and determines whether or not the type of the stamp S stamped on the back side of the document is an abnormal stamp SB (error occurrence) (step S119). ), If it is an abnormal stamp SB (step S119; Yes), the process proceeds to step S127. If it is not an abnormal stamp SB (step S119; No), the type of stamp S stamped on the back side of the document is a normal stamp. It is determined whether or not SA (step S120).

  If the stamp is a normal stamp SA (step S120; Yes), the process proceeds to step S121. If the stamp is not a normal stamp SA, the stamp S does not exist, and the process proceeds to step S123.

  In step S121, it is determined whether or not the flag for holding the completed stamp state of the previous page is on. If the flag is on (step S121; Yes), it is determined that the document has been successfully completed for FAX transmission. The process proceeds to step S126. If the flag is off (step S121; No), the process proceeds to step S122.

  On the other hand, in step S123, since it is determined in steps S119 and S120 that there is no stamp S on the back side of the document, the flag for holding the completed stamp state of the previous page is set to OFF. That is, the state that the previous page is not stamped is maintained by turning off the flag. Subsequently, the read image data of the document surface is stored in a temporary memory area of the image memory 26 (step S124), and it is determined whether or not a memory full has occurred (step S125).

  When the memory full has occurred (step S125; Yes), the process of step S136 is executed to perform post-processing for canceling the retransmission job. When the memory full does not occur and the read image data on the surface of the document is normally stored in the temporary memory area of the image memory 26 (step S125; No), the process proceeds to step S126.

  In step S126, it is determined whether the read original is the last page. If it is the last page (step S126; Yes), the process proceeds to step S137 to perform FAX retransmission, and if it is not the last page (step S126; No), the process returns to step S118.

  If the stamp S is not stamped on the back side of the read original by the series of processing from step S117 to step S126, the image data on the front side of the original is stored in the temporary memory area of the image memory 26. When the flag is on and the normal stamp SA is stamped on the back side of the read original, the image data on the front side of the original is transmitted normally, so the temporary memory area of the image memory 26 is also in the main memory. The area is erased without being saved.

  In step S127, it is determined whether or not there is image data in the temporary memory area of the image memory. If there is image data (step S127; Yes), the first page of image data existing in the temporary memory area of the image memory 26 is copied to the main memory area (step S128), and whether or not memory full has occurred. Is determined (step S129).

  When the memory full has occurred (step S129; Yes), the process of step S136 is executed in order to perform post-processing for canceling the retransmission job. When the memory full does not occur and the image data for the first page existing in the temporary memory area is normally copied to the main memory area (step S129; No), the image data for the first page is stored in the temporary memory. It deletes from an area | region (step S130), and returns to the process of step S127.

  On the other hand, if the flag is off in step S121 (step S121; No), it is determined whether or not there is image data in the temporary memory area of the image memory 26 (step S122). If there is image data (step S122; Yes), the process proceeds to step S130, and the image data for the first page existing in the temporary memory area is deleted from the temporary memory area (step S130). Transition to processing. When there is no image data (step S122; No), the process proceeds to step S131.

  If there is no image data in the temporary memory area of the image memory 26 in step S127 (step S127; No), that is, if there is no image data from the beginning, or the image data originally existed, but from step S128 to step S130. If the original image data is deleted from the temporary memory area after being copied to the main memory area by repeating the above process, the image data on the surface of the original obtained by this reading is stored in the main memory area of the image memory 26. It is stored in the memory area (step S131), and it is determined whether or not a memory full has occurred (step S132).

  When the memory full has occurred (step S132; Yes), the process of step S136 is executed in order to perform post-processing for canceling the retransmission job. When the memory full does not occur and the image data on the surface of the original read this time is normally saved in the main memory area (step S132; No), the flag for holding the previous stamp state of the previous page is set to ON. Then, it is determined whether or not the read original is the last page (step S134).

  If it is the last page (step S134; Yes), the process proceeds to step S135 to perform FAX retransmission, and if it is not the last page (step S134; No), the process returns to step S118.

  For example, in the processing of a document having an abnormal stamp SB, if the first page read has an abnormal stamp SB, or when the next page of the page having the abnormal stamp SB is read, that page also has the abnormal stamp SB. If there is an abnormal stamp SB on the page after reading the page having the normal stamp SA, the original having the abnormal stamp SB is a FAX untransmitted page and is retransmitted. It becomes a target. In the processing of the original, the process proceeds from step S119 (step S119; Yes) to step S127 (step S127; No) to step S131 without image data being stored in the temporary memory area of the image memory 26. A series of processing from step S131 to step S134 is performed. As a result, the image data of the document having the abnormal stamp SB read this time is stored in the main memory area, and is subjected to retransmission (abnormal document specifying process).

  In addition, after the processing from step S117 to step S126, the image data of the original without the stamp S is stored in the temporary memory area of the image memory 26, and then the process proceeds to step S127, and a series of processing from step S127 to step S130. Is performed, the image data of the original without the stamp S stored in the temporary memory area is determined as a re-transmission target after the original with the stamp S is read (step S119; Yes). The temporary memory area of the memory 26 is moved to the main memory area. That is, the first page in the temporary memory area is subject to retransmission by the appearance of the subsequent abnormal stamp SB, and the second and subsequent pages in the temporary memory area are subject to retransmission by multifeed (next page of the page without the stamp S). To be.

  After all the image data existing in the temporary memory area is moved to the main memory area, when the process of step S131 is performed, the original read this time is also subject to retransmission, and the image data of the original is also saved in the main memory area. The That is, since the original read this time is the next page of the last page without the stamp S in the temporary memory area, this page is also subject to retransmission.

  On the other hand, after the processing from step S117 to step S126, after the image data of the document without the stamp S is stored in the temporary memory area of the image memory 26, the process proceeds from step S120 to step S121 and step S122 to step S130. Is transferred to the temporary memory area of the image memory 26, it is found that the first page of the image data of the document without the stamp S has already been faxed (step S120; Yes). The image data for the first page is removed from the transmission target and deleted from the temporary memory area of the image memory 26 (step S130). Since the second and subsequent pages in the temporary memory area are the next page of the page without the stamp S, they are to be retransmitted. Therefore, all the image data remaining in the temporary memory area after deleting the image data of the first page is moved to the main memory area. After that, when the process of step S131 is performed, the original read this time is a non-faxed FAX page that has been multi-feeded over the previous page (the last page in the temporary memory area) although the normal stamp SA is stamped. The original image data is stored in the main memory area.

  As a result, the stamped page of the stamp S read this time and the page stored in the temporary memory area are treated as a group of multi-feeded pages, and the type of the stamp S is a normal stamp SA. Handles the first page in a group of pages, that is, the first page in the temporary memory area as a FAX transmitted page. If the type of stamp S is an abnormal stamp SB, the first page in the temporary memory area is A process that treats it as an unsent page and makes it a target of retransmission is performed (abnormal first page specifying process). Further, processing for retransmitting the second and subsequent pages without the stamp S in the temporary memory area and the page with the stamp S read this time is also performed (multifeed document specifying processing).

  In step S137, it is determined whether there is image data stored in the temporary memory area of the image memory 26. If there is no image data (step S137; No), the process proceeds to step S135, and if there is image data (step S137; Yes), it is necessary to perform FAX retransmission, so it exists in the temporary memory area. The image data for the first page is copied to the main memory area (step S138), and it is determined whether a memory full has occurred (step S139).

  When the memory full does not occur and the image data for the first page existing in the temporary memory area is normally copied to the main memory area (step S139; No), the image data for the first page is stored in the temporary memory. It deletes from an area | region (step S140) and returns to the process of step S137. When the memory full has occurred (step S139; Yes), the process of step S136 is executed to perform post-processing for canceling the retransmission job.

  For example, when the last page is reached while the processing from step S118 to step S126 in which the image data of the page without the stamp S is saved in the temporary memory area (step S126; Yes), these pages are stored in the memory. It is determined that the page has been skipped to the last page due to a communication error that causes full or FAX transmission to be canceled. When a series of processing from step S137 to step S140 is performed, the image data of all pages in the temporary memory area (pages skipped) are moved from the temporary memory area of the image memory 26 to the main memory area. To be retransmitted (abnormal succeeding page identification process).

  In step S135, if there is image data stored in the main memory area of the image memory 26, FAX transmission (retransmission) of the image data is executed, and all image data in the main memory area is deleted after FAX transmission. (Step S136) This retransmission job is ended (End). If there is no image data stored in the main memory area of the image memory 26, no processing is performed and the process proceeds to step S136 to end the retransmission job (End).

  In addition, when a memory full occurs during the process of the retransmission job (step S125 / step S129 / step S132 / step S139; Yes), in order to perform post-processing for canceling the retransmission job, If there is image data in the main memory area or the temporary memory area of the image memory 26, all the image data is deleted (step S136), and this retransmission job is stopped (End).

  The above is the flow of FAX retransmission processing using the retransmission mode. For example, FIG. 4 (A), FIG. 4 (B-5), FIG. 5 (C-1), FIG. 5 (D-1), FIG. (E-7) and each document group of the stamp pattern shown in FIG. 9 (F-22), by performing this process, the document to be retransmitted automatically is automatically accurate according to the flow described below. Identified and retransmitted.

FIG. 4A: Normal transmission of all pages (pages 1 to 4) When page 1 with normal stamp SA stamped on the back side is read, the image data on the front side of page 1 is stored in the temporary memory area of image memory 26. It is deleted without being saved (S118 → S119 → S120 → S121 → S126). The same processing is repeated for pages 2, 3, and 4, and when the processing of page 4, which is the last page, is finished, there is no image data in the main memory area of image memory 26, so the fax transmission is not performed and the processing ends. (S126 → S137 → S135 → S136 → End). Accordingly, in this example, it is processed that there is no document to be retransmitted by FAX.

FIG. 4 (B-5): Document multi-feed occurs on pages 2, 3, and 4. When page 1 with normal stamp SA on the back side is read, the image data on the front side of page 1 is stored in image memory 26. The data is erased without being saved in the temporary memory area (S118 → S119 → S120 → S121 → S126). For the pages 2 and 3 that are not stamped with the stamp S on the back side, the image data on the front side is stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S123 → S124 → S125 → S126: repeated twice) ). When page 4 with the normal stamp SA stamped on the back side is read (S118 → S119 → S120), page 2 is determined to be faxed, and the image data of page 2 is deleted from the temporary memory area of image memory 26. (S121 → S122 → S130). It is determined that page 3 has been multi-fed to page 2 that has been faxed, and the image data of page 3 is copied from the temporary memory area of image memory 26 to the main memory area and deleted from the temporary memory area (S127 → S128 → S129 → S130). It is determined that page 4 has been multi-feeded to pages 2 and 3, and the image data on the surface of page 4 is stored in the main memory area of the image memory 26 (S127 → S131 → S132 → S133 → S134). When the processing of page 4, which is the last page, is completed, the image data of pages 3 and 4 stored in the main memory area of the image memory 26 is faxed and the processing ends (S135 → S136 → End). Therefore, in this example, pages 3 and 4 are specified as FAX retransmission targets and retransmitted.

-Fig. 5 (C-1): Communication error (transmission aborted on error page) or memory full occurred on page 1 When page 1 with an abnormal stamp SB on the back side is read, page 1 is not sent by FAX Thus, the image data on the surface of page 1 is stored in the main memory area of the image memory 26 (S118 → S119 → S127 → S131 → S132 → S133 → S134). For the pages 2 and 3 that are not stamped with the stamp S on the back side, the image data on the front side is stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S123 → S124 → S125 → S126: repeated twice) ). Page 3 with no stamp S stamped on the back side is the last page, so a communication error occurred on page 1 (transmission aborted on error page) or memory full occurred, and pages 2 and 3 turned out to be untransmitted Then, the image data of pages 2 and 3 are copied from the temporary memory area of the image memory 26 to the main memory area and deleted from the temporary memory area (S137 → S138 → S139 → S140: repeated twice). When copying of the image data of pages 2 and 3 is completed, the image data of pages 1, 2 and 3 stored in the main memory area of the image memory 26 is faxed, and the process ends (S135 → S136 → End). . Therefore, in this example, pages 1, 2, and 3 are specified as FAX retransmission targets and retransmitted.

FIG. 5 (D-1): A communication error (transmission other than an error occurrence page) occurs on page 1. When page 1 with an abnormal stamp SB on the back side is read, page 1 is not transmitted by FAX. As a result, the image data on the surface of page 1 is stored in the main memory area of the image memory 26 (S118 → S119 → S127 → S131 → S132 → S133 → S134). For pages 2 and 3 with the normal stamp SA on the back side, the image data on the front side is deleted without being stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S121 → S126: 2 times) repetition). When the processing of page 3, which is the last page, is completed, the image data of page 1 stored in the main memory area of the image memory 26 is faxed and the processing ends (S135 → S136 → End). Therefore, in this example, page 1 is specified as a FAX retransmission target and retransmitted.

・ Figure 6 (E-7): Document multi-feed occurs on pages 1, 2 and 3 / communication error (transmission aborted on error page) or memory full occurs on page 3 Page without stamp S on the back When 1 and 2 are read, the image data on the front surfaces of pages 1 and 2 are stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S123 → S124 → S125 → S126: repeated twice). When page 3 with an abnormal stamp SB on the back side is read (S118 → S119), pages 1, 2, and 3 are multi-feeded, pages 2 and 3 are not sent by fax, and page 1 is also not faxed. The image data of pages 1 and 2 is copied from the temporary memory area to the main memory area and deleted from the temporary memory area (S127 → S128 → S129 → S130: repeated twice). The data is stored in the main memory area of the image memory 26 (S127 → S131 → S132 → S133 → S134). For page 4 where the stamp S is not stamped on the back side, the image data on the front side is stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S123 → S124 → S125 → S126). Since page 4 with no stamp S stamped on the back side is the last page, it turns out that page 4 has a communication error (transmission aborted on error page) or memory full has occurred and page 4 has not been faxed. The image data of page 4 is copied from the temporary memory area of the image memory 26 to the main memory area and deleted from the temporary memory area (S137 → S138 → S139 → S140). When copying of the image data of page 4 is completed, the image data of pages 1, 2, 3, and 4 stored in the main memory area of the image memory 26 is faxed and the process ends (S135 → S136 → End). . Therefore, in this example, pages 1, 2, 3, and 4 are specified as FAX retransmission targets and retransmitted.

FIG. 9 (F-22): Document multi-feed occurs on pages 1, 2 and 3 / Communication error (sends other than error-occurring page) occurs on page 4 Pages 1 and 2 with stamp S not stamped Is read, the image data on the front side of pages 1 and 2 is stored in the temporary memory area of the image memory 26 (S118 → S119 → S120 → S123 → S124 → S125 → S126: repeated twice). When page 3 with the normal stamp SA stamped on the back side is read (S118 → S119 → S120), pages 1, 2 and 3 are multi-feeded, pages 2 and 3 are not sent by fax, and page 1 is faxed. The image data of page 1 is deleted from the temporary memory area of the image memory 26 (S121 → S122 → S130), and the image data of page 2 is transferred from the temporary memory area of the image memory 26 to the main memory area. It is copied and deleted from the temporary memory area (S127 → S128 → S129 → S130), and the image data of page 3 is stored in the main memory area of the image memory 26 (S127 → S131 → S132 → S133 → S134). Since page 4 with the abnormal stamp SB on the back side has not been faxed, the image data on the front side is stored in the main memory area of the image memory 26 (S118 → S119 → S127 → S131 → S132 → S133 → S134). ). When the processing of page 4, which is the last page, is completed, the image data of pages 2, 3, and 4 stored in the main memory area of the image memory 26 is faxed and the processing ends (S135 → S136 → End). Therefore, in this example, pages 2, 3, and 4 are specified as FAX retransmission targets and retransmitted.

  Although not described here, the pages to be retransmitted are automatically identified and retransmitted automatically by the processing shown in FIG. 15 for each document group of other stamp patterns shown in FIGS.

  As described above, in the document reading apparatus 11 of the present embodiment, the first reading optical system 35 reads the surface MF (document surface) of each document M with respect to a document group including a plurality of documents M, and the stamp mechanism. 50 stamps a stamp S on the back surface MR of each document M read by the first reading optical system 35. Further, when the operation unit 12 is set to perform the retransmission mode, the second reading optical system 36 reads the back surface MR of each document M by reading the document group on which the stamp S is stamped, and performs system control. The CPU 20 of the unit 13 specifies the document M to be retransmitted according to the status of the stamp S obtained by reading the back surface MR of each document M by the second reading optical system 36.

  In particular, in this embodiment, when the re-transmission mode is set, when a document M whose stamp S is not stamped on the back surface MR is read, the document M on the next page of the document M is specified as a retransmission target. Further, when the original M with the abnormal stamp SB imprinted on the back MR is read, the original M is specified as a re-transmission target, and further, the original M in the original M not imprinted with the stamp S connected in front of the original M is identified. The first page is specified as a retransmission target. In addition, after reading the original M with the abnormal stamp SB imprinted on the back MR, if there are no stamps S on the rear MR of all the originals M on and after the next page, the original M and subsequent on the abnormal stamp SB are imprinted. All the originals M are specified as re-transmission targets.

  As a result, even if a reading error such as a document multifeed, a communication error (transmission aborted / other than the page where the error occurred) is sent, or a memory full occurs alone or in combination, it is retransmitted because the fax has not been sent. The document M that needs to be processed can be accurately identified. In addition, the user can set the retransmission mode through the operation unit 12 and cause the document reader 11 to read the document group again. Based on the reading result of the stamp S of each document M, the document M to be retransmitted is automatically set. Identified and retransmitted.

[Second Embodiment]
The document reading device 11 of the image forming apparatus 10 described in the first embodiment can handle double-sided originals in addition to single-sided originals. In the second exemplary embodiment, a case where double-sided originals are processed. explain. Hereinafter, a configuration for processing a double-sided document in the document reading apparatus 11 will be described, but the description of the same configuration as that of the first embodiment will be omitted.

  The document reading device 11 has a stamp (identification mark) for a double-sided document for identifying whether each of the front and back sides of the document has been normally transmitted when the stamp function is set by FAX transmission of a double-sided document. Is imprinted on the back of a two-sided document. Further, in the double-sided document retransmission mode, the document surface that needs to be retransmitted because the FAX has not been transmitted is automatically identified and retransmitted.

  Fax transmission of double-sided originals is executed by real-time transmission that simultaneously performs FAX transmission while reading the front and back sides of double-sided originals, as with single-sided originals. If not, the image data on the front and back surfaces of the read double-sided document is temporarily stored in the image memory 26, and the stored content is executed by memory transmission for FAX transmission.

  In addition to the function described in the first embodiment, the system control unit 13 (see FIG. 1) retransmits because the fax has not been sent when the retransmission mode is set for the fax transmission of a double-sided document. It has a function to specify a required document surface (document surface to be reprocessed) and a function to control each unit so as to retransmit the specified document surface.

  Selection of single-sided / double-sided FAX transmission according to the document type (single-sided / double-sided) can be set through the operation unit 12 (see FIG. 1). In the resend mode, the document type is automatically determined based on the stamp type (single-sided document / double-sided document stamp) when the document is re-read, and there is no need to select the document type. It has become. In addition to such automatic determination, the type of document can be selected through the operation unit 12 even in the retransmission mode.

  The stamp mechanism 50 (see FIG. 3) is a single-sided document stamp S (normal stamp SA / abnormal stamp SB) when the stamp function is set by FAX transmission of a single-sided document described in the first embodiment. In addition to the function of stamping the back surface MR of the original M (see FIG. 4), if the stamp function is set for FAX transmission of double-sided originals, the stamp S for double-sided originals (see FIG. 16) is applied to the original. It has a function of impressing on the back surface MR of M (identification mark applying means).

  The stamp S for a double-sided original is read from the front surface MF of the double-sided original M by the first reading optical system 35 (see FIG. 3) and at the back side MR of the double-sided original M by the second reading optical system 36 (see FIG. 3). Is read and double-sided normal stamp (SC) indicating that both front and back sides have been processed normally (double-sided fax transmission completed), and double-sided abnormality indicating that both front and backsides have not been processed normally (double-sided fax not sent) A stamp (SD), a back side abnormal stamp (SE) indicating that the front side is normal and the back side is abnormal, a front side abnormal stamp (SF) indicating that the front side is abnormal and the back side is normal, There are five types of front surface abnormal process stop stamps (SG) indicating that the process was stopped and the back side process was not performed.

  Next, a double-sided original reading operation by the original reading device 11 and an operation for automatically specifying and retransmitting the original surface to be reprocessed (FAX not transmitted) will be described. In the following description, “one-sided document stamp” is abbreviated as “single-sided stamp”, and “double-sided document stamp” is abbreviated as “double-sided stamp”.

  When a double-sided document is read by the document reading device 11 of the image forming apparatus 10, as in the case of a single-sided document, the user places a double-sided document M consisting of a plurality of pages on the document tray 41 of the automatic document feeder 16 (see FIG. 3). When a two-sided original M is scanned / copied / faxed through the operation unit 12 (see FIG. 1), the automatic reading of the double-sided original M is started. Is done.

  In this automatic reading, the original group is picked up and conveyed one by one from the first page, and when passing through the reading position RP1, the image on the front surface MF of the double-sided original M is read by the first reading optical system 35, and the reading position is read. When passing through RP 2, the image on the back surface MR of the double-sided original M is read by the second reading optical system 36 and discharged to the discharge tray 42. When the reading of the last page is completed and the reading of the document group is an operation in FAX transmission, the CPU 20 of the system control unit 13 controls the FAX unit 31 to read each double-sided document M read. The image data of the front surface MF and the rear surface MR is fax-transmitted to the external device through the public line 33.

  When the stamp function is set for FAX transmission of double-sided originals, the double-sided stamp S is stamped on the back side MR of each double-sided original M by the stamp mechanism 50 according to the transmission status of the front and back sides. Further, when retransmitting a non-FAX transmitted page (original side), as in the case of a single-sided original, a group of originals sent by FAX using the completed stamp function is again stored in the original tray 41 of the automatic document feeder 16. And set the resend mode and start scanning. By reading in this retransmission mode, each double-sided document M is read by the first reading optical system 35 when the image on the front side MF passes through the reading position RP1, and the double-sided stamp S is read when passing through the reading position RP2. An image of the back surface MR including presence / absence and type is read by the second reading optical system 36.

  The image data of the back surface MR of each double-sided document M read by the second reading optical system 36 is sent to the CPU 20 of the system control unit 13, and the CPU 20 stores the stamp S stamped on the back surface MR of each double-sided document M. The FAX unit 31 and the like are controlled so that the original surface of the double-sided original M to be retransmitted is identified and retransmitted according to the situation.

  Hereinafter, the types of the double-sided stamp S and the pattern of the double-sided stamp S to be stamped on the double-sided original M having a plurality of pages will be described in detail.

  FIGS. 16 to 39 show examples of the pattern of the double-sided stamp S on the double-sided original M having a plurality of pages in the case of an original group with 3 pages or 4 pages. 16 to 39, the stamp pattern is represented as shown in “How to read the drawing” in FIG. 16, with the double-sided document M of each page viewed from the back MR side and from the back side of the page. Page 1, page 2,... Toward the side (similar to a single-sided document).

  A circular mark (“●” / “◯”) is used for the single-sided stamp, but a rhombus mark (one type is a triangular mark) is used for the double-sided stamp to distinguish it. In this double-sided stamp consisting of rhombus marks, the triangle portion occupying the left half represents the processing status of the front side of the document, and the triangle portion occupying the right half represents the processing status of the back side of the document, both of which are normal (FAX transmission completed) Is black and abnormal (FAX not transmitted) is outlined.

  In detail, the double-sided normal stamp SC is indicated by black rhombus marks (“♦”) in the left and right areas (all areas) as present at the lower end of the back surface MR of page 3, and the double-sided abnormal stamp SD is indicated by page 1 The left and right regions are indicated by white diamond marks so as to be at the lower end of the rear surface MR. Further, the back side abnormal stamp SE is shown with a white diamond mark on the lower right side of the back side MR of the page 4, and the left side half such that the front side abnormal stamp SF is on the lower side of the back side MR of the page 5 is shown. The surface abnormality treatment stop stamp SG is indicated by a triangular mark in which the right half triangle does not exist in the rhombus mark and the left half triangle is white. Further, no stamp is shown without display so that it is at the lower end portion of the rear surface MR of page 2 (similar to the case of a single-sided document).

  Note that an error in FAX transmission of a double-sided document can be caused by a “communication error” during FAX transmission (continuous processing or interruption without stopping the transmission after the error page) or an image in which image data is saved. This is a case where FAX transmission is not completed due to occurrence of “memory full” in which the memory 26 is over capacity. In addition, when a “communication error” or “memory full” that requires interruption occurs in reading the front side of a double-sided document, the reading operation is stopped, and a front surface abnormal process stop stamp SG is stamped on the back side of the double-sided document. It is discharged to the discharge tray 42. Therefore, the double-sided document on which the front surface abnormal process stop stamp SG is stamped is not read because the front side is abnormal, and the reading operation is stopped and the back side is not read. Further, when there are pages after the double-sided document on which the front surface abnormal processing stop stamp SG is stamped, all the pages after the next page are not read and the double-sided stamp S is discharged without being stamped.

  Similarly to the case of a single-sided original, regarding the FAX transmission state of the double-sided original M, FAX transmission completed (normal) is set to “transmitted”, FAX untransmitted (abnormal) is set to “untransmitted”, and the stamp pattern The types are classified according to the following GL phenomena, and 329 types are exemplified.

G: Normal transmission H: Document multifeed I: Communication error (transmission aborted on error page) or memory full J: Communication error (transmission other than error page)
K: Document multifeed and communication error (transmission aborted on error occurrence page) or memory full combination L: Document multifeed and communication error (transmission other than error occurrence page) FIG. 40 is shown in FIGS. For some of the stamp patterns shown, the type, FAX transmission completion page number, FAX retransmission target page number, and remarks (symptoms) are shown in a list.

  For example, when all the front and back sides of the double-sided original M of a plurality of pages are normally fax-transmitted, the reverse side MR of the double-sided original M of each page (pages 1 to 4) is shown in FIG. A double-sided normal stamp SC is stamped.

  When the multi-feed of the double-sided document M occurs, a page without the double-sided stamp S is generated on the back surface MR as shown in FIGS. 16 (H-1) to (H-6). For example, as shown in FIG. 16 (H-4), when multi-feed occurs on pages 2 and 3 in a double-sided document of all 4 pages, page 2 is not stamped and the fax transmission is completed on the page. 1 on the front and back, page 2 on the front, page 3 on the back, and page 4 on the front and back, the untransmitted FAX becomes the back of page 2 and the front of page 3 (see the stamp pattern (H-4) in FIG. 40). ). Also, as shown in FIG. 16 (H-5), when multi-feed occurs on pages 2, 3, and 4 in a double-sided original of all 4 pages, pages 2 and 3 are not stamped and FAX transmission is completed. The front and back of page 1, the front of page 2, and the back of page 4, and the untransmitted fax is the back of page 2, the front and back of page 3, and the front of page 4 (stamp pattern ( See H-5)).

  That is, the double-sided document (M1) on which the double-sided stamp S is not stamped on the back side is conveyed with the double-sided document (M2) of the next page overlapped on the back side. The back side of the double-sided original (M1) that has not been read is not read due to the presence of the double-sided original (M2) of the next page that overlaps the back side, and the front side of the double-sided original (M2) of the next page Is not read due to the presence of the double-sided original (M1) of the previous page that overlaps the front. Even when a plurality of pages are multi-feeded as shown in FIGS. 16H-2, H-3, and H-5, the same phenomenon occurs for each non-stamped page. Therefore, when there is a page without a stamp, the back side of the page without the stamp and the front side of the next page are specified as FAX retransmission targets.

  If a communication error (transmission is canceled at the page where the error occurred) or a memory full occurs, as shown in FIGS. 17 (I-1) to (I-6), the surface abnormality processing is stopped on the page where the abnormality has occurred on the surface. When the stamp SG is stamped or the back side abnormal stamp SE is stamped on the page where an abnormality has occurred on the back side, and there is a page after that, the front side and back side images are not read and are discharged without the double-sided stamp S It becomes. For example, as shown in FIG. 17 (I-1), when a communication error (transmission aborted on an error occurrence page) or a memory full has occurred on the surface of page 1 in a double-sided original of all three pages, Abnormal processing stop stamp SG is stamped, pages 2 and 3 are not stamped, and FAX untransmitted is the front and back surfaces of pages 1, 2 and 3 (all pages) (see stamp pattern (I-1) in FIG. 40). ). Also, as shown in FIG. 17 (I-2), if a communication error (transmission aborted on an error occurrence page) or a memory full occurs on the back side of page 1 in all three-page duplex originals, the back side of page 1 The abnormal stamp SE is stamped, pages 2 and 3 are unstamped, FAX transmission is completed only on the front side of page 1, and FAX non-transmission is on the back side of page 1, and the front and back sides of pages 2 and 3 ( The stamp pattern (I-2) in FIG. 40).

  When a communication error (transmission other than an error occurrence page) occurs, as shown in (J-1) to (J-60) of FIGS. The SD or back side abnormal stamp SE or the front side abnormal stamp SF is stamped, and the double-sided normal stamp SC is stamped on a page that has been normally faxed. For example, as shown in FIG. 20 (J-44), if a communication error occurs on the front and back of page 1, the back of page 2, and the front of page 3 in a double-sided original of all three pages, The abnormal stamp SD is imprinted, the back surface abnormal stamp SE is imprinted on the page 2, the front surface abnormal stamp SF is imprinted on the page 3, and FAX untransmitted is the front and back surfaces of the page 1, the back surface of the page 2, and the page 3 (See the stamp pattern (J-44) in FIG. 40).

  When a document multi-feed and a communication error (transmission aborted on the error occurrence page) or memory full occur in combination, as shown in FIGS. 22 and 23 (K-1) to (K-22), A page without the double-sided stamp S is generated by multi-feeding, and a front surface abnormality processing stop stamp SG is stamped on a page that has stopped after the occurrence of an abnormality on the front surface, or a page that has stopped after an abnormality has occurred on the back surface. When the back side abnormal stamp SE is impressed and there are pages thereafter, the front and back images are not read and discharged, and there is no double-sided stamp S. For example, as shown in FIG. 23 (K-16), multi-feed occurs in pages 1, 2, and 3 on a double-sided original of all 4 pages, and a communication error (transmission aborted on error page) or memory full page. 3 occurs, the surface abnormal process stop stamp SG is stamped on page 3, pages 1, 2, and 4 are not stamped, and FAX untransmitted pages 1, 2, 3, 4 (all pages) These are the front and back surfaces (see the stamp pattern (K-16) in FIG. 40).

  If a transmission error or a memory full error occurs on the front or back side of a double-sided document due to a communication error, the front side abnormal processing stop stamp SG or the back side abnormal stamp SE is imprinted on the back side of the page where the error occurred, and the subsequent pages All pages are ejected without being read. Therefore, after the front surface abnormal process stop stamp SG or the back surface abnormal stamp SE, if a page without a stamp continues until the last page, the surface where the stamp indicates an abnormality and the stamp are unprocessed among the stamped pages indicating the abnormality. And the front and back surfaces of all the pages after that page are specified as FAX retransmission targets.

  When a document multi-feed and a communication error (transmission other than an error occurrence page) occur in combination, as shown in (L-1) to (L-234) of FIGS. A page without the double-sided stamp S is generated, and a double-sided abnormal stamp SD, a back side abnormal stamp SE, or a front side abnormal stamp SF is imprinted on the page where a communication error has occurred. For example, as shown in FIG. 36 (L-190), multi-feed is generated on pages 1, 2, and 3 in a four-sided original of all four pages, and on the front and back surfaces of the multi-feed pages 1, 2, and 3. On the other hand, when a communication error (transmission other than the error occurrence page) occurs and the transmission of the front and back surfaces of page 4 is completed, pages 1 and 2 are not stamped, double-sided abnormal stamp SD is stamped on page 3, and page 4 Both sides normal stamp SC is imprinted, and FAX unsent is the front and back surfaces of pages 1, 2, and 3 (see stamp pattern (L-190) in FIG. 40).

  As described above, in FAX transmission of a double-sided document, various patterns with or without stamps indicating normality on both sides or various abnormalities are generated according to the symptoms of H to L. Only the presence / absence of this normal / abnormal stamp is simply determined. It is not possible to accurately specify the document surface to be retransmitted by FAX only by detecting it. For example, in the case of (K-13) to (K-16) or (L-187) to (L-195) where the document multifeed and the communication error are combined, pages 1 and 2 are stamped by the multifeed. Although there is none, the FAX transmission status of the front surface of page 1 and the back surface of page 3 is determined by the type of stamp S of page 3.

  Also in the case of a double-sided document, a document with a double-sided stamp S stamped on the back side and a document without a double-sided stamp S continuous in front of it are bundled and multi-feeded. However, in a double-sided document, an image is read on the front surface of this bundle of first pages, and a double-sided stamp S indicating the processing result for the image on the front page of the first page is stamped on the back surface of the last page of this bundle. It will be. Therefore, if the double-sided stamp S stamped on the back side of the last page of a bundle of documents is a stamp indicating normality on the front side (double-sided normal stamp SC or back side abnormal stamp SE), If the surface is processed normally and a double-sided stamp indicating a surface abnormality (double-sided abnormality stamp SD or surface abnormality stamp SF or surface abnormality processing stop stamp SG), the surface of the first page of this bundle is processed normally. It can be determined that there is no abnormal page.

  In the case of a double-sided document, an image is read on the back side of the last page of a multi-feed bundle, and a double-sided stamp S indicating the processing result for the back side image of the final page is stamped on the back side of the final page. Will be. Therefore, if the double-sided stamp S stamped on the back side of the last page of the bundle of documents is a stamp indicating normality on the back side (double-sided normal stamp SC or front side abnormal stamp SF), If the back side is processed normally, and the double-sided stamp (double-sided abnormal stamp SD, back side abnormal stamp SE, or front side abnormal processing stop stamp SG) indicating the back side abnormality, the back side of this bundle of final pages has been processed normally. It can be determined that there is no abnormal page.

  In this way, when a multi-feed original and a communication error for continuing or canceling FAX transmission are combined, depending on the type of the double-sided stamp S on the last page of the multi-fed double-sided original, there is no stamp that continues in front of it. The necessity of FAX retransmission on the front surface of the first page and the back surface of the last page is determined.

In the document reading apparatus 11 of the present embodiment, in the retransmission mode for FAX transmission of a double-sided document,
(5) “Multi-feed page document surface specifying process” for specifying a document surface to be retransmitted when a document whose stamp is not stamped on the back surface is read and the back surface of the document and the front surface of the next page document are specified.
(6) When a document having a stamp indicating at least one of the front and back abnormalities (double-sided abnormal stamp SD / back-side abnormal stamp SE / front-side abnormal stamp SF / front-side abnormal process stop stamp SG) is read on the back side , “Abnormal page manuscript surface identification process” for identifying the surface of the manuscript whose stamp is abnormal as the manuscript surface to be reprocessed
(7) When a document on which a stamp indicating a front surface abnormality (double-sided abnormality stamp SD / front surface abnormality stamp SF / surface abnormality processing stop stamp SG) is read on the back side is read, the stamps consecutively placed in front of the document are stamped ”Abnormal first page document surface identification process” that identifies the surface of the first page in a document that has not been processed as the document surface to be retransmitted
(8) Front / back surface abnormality, or back surface abnormality, or a stamp indicating that the front side is abnormal and the back side is unprocessed (double side abnormal stamp SD / back side abnormal stamp SE / front side abnormal processing stop stamp SG) is stamped on the back side. After reading the original, if there is no stamp on the back side of all the originals on and after the next page, out of the originals that are stamped with an abnormal stamp on the back side, "Abnormal succeeding page document surface identification process" that identifies the surface indicating the process and the front and back surfaces of all documents after that document as the document surface to be reprocessed
By combining the processes (5) to (8), the original surface to be retransmitted for the double-sided original is specified. Specifically, by executing the processing described below, automatic specification and re-transmission of the re-transmission target document surface covering each of the above-described processes (5) to (8) are realized.

  FIGS. 41 and 42 show the flow of the FAX transmission of the single-sided / double-sided original and the stamp function performed by the original reading device 11, and FIGS. 43 to 47 show the operation of the retransmission mode in the FAX transmission of the single-sided / double-sided original. The flow is shown. The operations shown in FIGS. 41 to 47 correspond to the FAX transmission / finished stamp function / retransmission mode for single-sided originals, but are basically the same as those in the first embodiment, and therefore the operations related to single-sided originals. Detailed description is omitted.

  First, a basic FAX transmission operation when the retransmission mode is not used will be described. As shown in FIG. 41, when an operation (transmission job) for performing FAX transmission is started (Start), the CPU 20 of the system control unit 13 determines whether the retransmission mode set by the user is valid / invalid ( When the setting is valid (step S201; Yes), the processing after step S244 in FIG. 43 is performed, and when the setting is invalid (step S201; No), the processing after step S202 in FIG. 41 is performed.

  When the setting of the retransmission mode is invalid, it is determined whether the stamp function already set is valid / invalid (step S202). When the setting is valid (step S202; Yes), the processing from step S211 is performed. When the setting is invalid (step S202; No), the processing after step S203 is performed.

  When the completed stamp function is not set (step S202; No), the document reading apparatus 11 reads images on both sides of one page of the document (step S203) because the operation is performed by memory transmission. The image is stored in the main memory area of the image memory 26 (step S204).

  Subsequently, it is determined whether or not the image memory 26 has exceeded the capacity (step S205). If the memory is full (step S205; Yes), for example, the display unit 19 (see FIG. 1). In this case, the occurrence of memory full is displayed and the user is notified and the transmission job is stopped (End). When the memory full does not occur and the image data on the surface of the read original is normally stored in the image memory 26 (step S205; No), it is determined whether or not the setting by the user is duplex transmission (step S206). .

  If it is not duplex transmission (step S206; No), the process proceeds to step S209. In the case of duplex transmission (step S206; Yes), the read image data on the back side of the document is stored in the main memory area of the image memory 26 (step S207).

  Subsequently, it is determined whether or not a memory full has occurred (step S208). If a memory full has occurred (step S208; Yes), the transmission job is stopped (End). When the memory full does not occur and the image data on the back side of the read original is normally stored in the image memory 26 (step S208; No), it is determined whether the read original is the last page (step S208). S209).

  If the read original is not the last page (step S209; No), the process returns to step S203. If the read document is the last page (step S209; Yes), the image data of all the pages stored in the main memory area of the image memory 26 (in the case of a double-sided document, the front and back surfaces of all pages) are stored. Fax transmission is performed (step S210), and the transmission job is terminated after completion of transmission (End).

  If memory full does not occur in the series of processing from step S203 to step S210, all pages of the single-sided / double-sided document are normally read and transmitted by FAX.

  On the other hand, when the completed stamp function is set (step S202; Yes), real-time transmission that simultaneously performs FAX transmission while reading a document, and single-sided according to the FAX transmission status (normal / abnormal) of a single-sided / double-sided document / An operation for impressing the double-sided stamp S is performed.

  First, the front side error flag for holding the processing state of the original surface and the back side error flag for holding the processing state of the back side of the original are cleared (step S211). The front / back side error flag used in this processing indicates the processing state of the front / back side of the document, flag clear indicates that the processing was “normal” (initial value), and the flag set indicates processing. Indicates “abnormal”.

  Next, the images on both sides of one page of the document are read (step S212), and the read image data on the surface of the document is stored in the main memory area of the image memory 26 (step S213).

  Subsequently, it is determined whether or not a memory full has occurred (step S214). If a memory full has occurred (step S214; Yes), a surface error flag is set (step S215), and the process proceeds to step S216. To do. When the memory full does not occur and the read image data on the surface of the document is normally stored in the image memory 26 (step S214; No), it is determined whether or not the user setting is duplex transmission (step S216).

  If it is not double-sided transmission (step S216; No), the process proceeds to step S220 in FIG. In the case of duplex transmission (step S216; Yes), the read image data on the back side of the document is stored in the main memory area of the image memory 26 (step S217).

  Subsequently, it is determined whether or not a memory full has occurred (step S218). If a memory full has occurred (step S218; Yes), a back surface error flag is set (step S219). Transition to processing. If the memory full does not occur and the scanned image data on the back side of the document is normally stored in the image memory 26 (step S218; No), the process proceeds to step S220 in FIG.

  In step S220, it is determined whether the surface error flag is set. If it is set (step S220; Yes), the process proceeds to step S229. If it has not been set (step S220; No), the image data on the surface of one page of the document stored in the main memory area of the image memory 26 is transmitted by FAX (step S221), and the FAX transmission of the document surface is communicated. It is determined whether or not the process ended normally without any error (step S222).

  If the fax transmission has not ended normally (step S222; No), the surface error flag is set (step S228), and the process proceeds to step S229.

  In step S229, it is determined whether the user setting is duplex transmission. If it is not duplex transmission (step S229; No), an abnormal stamp SB for one side is imprinted on the back side of the document (step S230), and it is determined whether continuous FAX transmission is possible on the line (step S231). .

  In the case of a communication error incapable of FAX transmission or memory full (step S231; No), for example, a communication error occurrence or memory full occurrence is displayed on the display unit 19 (see FIG. 1) to notify the user, and further pages Is skipped and discharged, and the transmission job is canceled (End). If FAX transmission is possible (step S231; Yes), the process proceeds to step S240.

  If duplex transmission is determined in step S229 (step S229; Yes), it is determined whether continuous FAX transmission is possible on the line (step S232).

  If the communication error cannot be faxed or if the memory is full (step S232; No), the front side abnormal processing stop stamp (SG) for double-sided original is stamped on the back side of the original (step S233), for example, the display unit 19 (FIG. 1). (See), a communication error occurrence or a memory full occurrence is displayed to notify the user, and the subsequent transmission job is canceled by skipping and discharging the subsequent pages (End). If FAX transmission is possible (step S232; Yes), the process proceeds to step S224.

  On the other hand, if the FAX transmission is normally completed in the determination in step S222 (step S222; Yes), it is determined whether the setting by the user is duplex transmission (step S223).

  If it is not duplex transmission (step S223; No), a normal stamp SA for one side is stamped on the back side of the document (step S234), and the process proceeds to step S240. In the case of double-sided transmission (step S223; Yes), it is determined whether a back surface error flag is set (step S224). If it is set (step S224; Yes), the process proceeds to step S235. If it is not set (step S224; No), the back side image data of one page of the original document stored in the main memory area of the image memory 26 is faxed (step S225). It is determined whether or not the process has ended normally without any error (step S226).

  If the fax transmission is normally completed (step S226; Yes), the process proceeds to step S235. If the fax transmission has not ended normally (step S226; No), the back surface error flag is set (step S227), and the process proceeds to step S235.

  In step S235, it is determined whether the surface error flag is set. If it is set (step S235; Yes), the process proceeds to step S241. If it is not set (step S235; No), it is determined whether or not the back surface error flag is set (step S236). If not set (step S236; No), the double-sided normal stamp SC is stamped on the back side of the document (step S237), and the process proceeds to step S240. If it is set (step S236; Yes), the back side abnormal stamp SE for double-sided originals is stamped on the back side of the original (step S238), and the process proceeds to step S239.

  In step S241, it is determined whether or not the back side error flag is set. If it is not set (step S241; No), the front side abnormal stamp SF for double-sided original is stamped on the back side of the original (step S242). Then, the process proceeds to step S239. If it is set (step S241; Yes), the double-sided abnormality stamp SD is stamped on the back side of the document (step S243), and the process proceeds to step S239.

  In step S239, it is determined whether continuous FAX transmission is possible on the line. In the case of a communication error incapable of FAX transmission or memory full (step S239; No), for example, the display unit 19 (see FIG. 1) displays a communication error occurrence or memory full occurrence to notify the user, and further pages Is skipped and discharged, and the transmission job is canceled (End). If FAX transmission is possible (step S239; Yes), the process proceeds to step S240.

  In step S240, it is determined whether the document on which the single-sided / double-sided stamps S are stamped is the last page. If the original is not the last page (step S240; No), the process returns to step S211 in FIG. If the original is the last page (step S240; Yes), the transmission job is ended (End).

  If a communication error or memory full does not occur in the series of processing from step S211 to step S243, all pages of the single-sided / double-sided document are normally read and faxed, and a normal stamp SA is printed on the back side of each single-sided document. And a double-sided normal stamp SC is imprinted on the back side of each double-sided document.

  Similarly to the first embodiment, when a communication error that can be continuously transmitted occurs in a single-sided original, an abnormal stamp SB is stamped on the back side of the original of the error occurrence page. When a communication error or a memory full error that causes the FAX transmission to be canceled occurs, the original document before the error is normally read and transmitted by FAX, and a normal stamp SA is stamped on the back of each completed document. Documents after the occurrence of an error are not faxed, and an abnormal stamp SB is stamped only on the back side of the document on the page where the error occurred.

  Further, when a communication error that can be continuously transmitted only on the front side or the back side of the double-sided document or on the front and back sides occurs, the front side abnormal stamp SF or the back side abnormal stamp SE, Alternatively, the double-sided abnormality stamp SD is stamped. If a communication error or a memory full error that causes the fax transmission to stop occurs on the front or back side, the document before the error occurs is read normally and sent by fax, and both sides are normal on the back side of each completed document. The stamp SC (or front side abnormal stamp SF / back side abnormal stamp SE) is stamped, and the original after the error is not sent by fax, and the front side abnormal processing stop stamp SG or the back side abnormal stamp is only on the back side of the original of the page where the error occurred. SE is stamped.

  Next, a flow when the retransmission mode is used will be described. In the case of a double-sided original as in the case of a single-sided original, whether or not a FAX re-transmission is required depends on the type of the double-sided stamp S that first appears on a subsequent-page original. Also in this embodiment, the method of using the image memory 26 is controlled by dividing it into a main memory area and a temporary memory area. However, in the first embodiment, only the image data of the page where the stamp S is not imprinted on the back surface is stored in the temporary memory area. However, in the second embodiment, there is a relationship with the presence or absence of the stamp S. Instead, all the read pages are temporarily stored in the temporary memory area, and the image data of the original surface determined to require FAX retransmission is moved to the main memory area.

  That is, after the read page is stored in the temporary memory area, it is determined whether or not there is a stamp S on the back side of the page. If there is no stamp S, the next page is read and stored in the temporary memory area. Then, in the case of the page with the stamp S, it is determined whether or not it is necessary to retransmit each original surface of the page that has been stored in the temporary memory area until then. Then, after deleting the image data of the manuscript surface determined not to be retransmitted from the temporary memory area, the remaining image data of the manuscript surface (the manuscript surface requiring re-transmission) is copied from the temporary memory area to the main memory area, and then All the image data in the temporary memory area is deleted and processed so as to prepare for the next reading.

  If the stamp S is stamped on the reverse side of the page where the image data is stored in the temporary memory area, the page stored in the temporary memory area at that time is a page read by one feed at the time of original transmission. Yes. In other words, if the pages are read one by one at the time of original transmission, the pages with the stamp S on the back side are continuous, so only the image data for one page is stored in the temporary memory area. On the other hand, when multi-feed occurs, a page without a stamp S appears after one or more pages without the stamp S continue. Therefore, when a page with the stamp S appears, the multi-feed bundle of pages is stored in the temporary memory area.

  In other words, when a plurality of pages are stored in the temporary memory area, the pages are a group of pages that are multi-feeded in a bundle, and the page with the stamp S that has been read this time (at the end of the temporary memory area). (Save page) is the last page of a bundle of multi-feeded pages, and the other pages saved in the temporary memory area are stamps S that are consecutive before the stamped page of this stamp S. The page is not stamped.

  Therefore, when the type of the double-sided stamp S is the double-sided normal stamp SC or the back side abnormal stamp SE indicating normality of the front side, the image data of the front side of the first page in the bundle of pages, that is, the top in the temporary memory area. The image data is treated as having been sent by FAX. That is, they are deleted without being transferred to the main memory area. In addition, when the type of the double-sided stamp S is the double-sided abnormal stamp SD, the surface abnormal stamp SF, or the surface abnormal process stop stamp SG indicating the surface abnormality, the image data of the front page of the first page in the temporary memory area is not transmitted by FAX. As a target of retransmission. That is, it is deleted after being transferred to the main memory area (abnormal first page document surface specifying process).

  Further, when the type of the double-sided stamp S is the double-sided normal stamp SC or the front side abnormal stamp SF indicating the normality of the back side, the back side of the last page (the page on which the double-sided stamp S is stamped) in the bundle of pages. Image data, that is, the final image data in the temporary memory area is treated as having been faxed. Further, when the type of the double-sided stamp S is the double-sided abnormal stamp SD, the back-side abnormal stamp SE, or the front-side abnormal process stop stamp SG indicating the back side abnormality, the image data on the back side of the last page in the temporary memory area is not transmitted by FAX. To be retransmitted (abnormal page manuscript surface identification process).

  Further, when two or more pages are stored in the temporary memory area, pages other than the last page are pages that are not stamped with the double-sided stamp S. Therefore, when two or more pages are stored in the temporary memory area, each document surface from the back surface of the first page to the front surface of the last page is set as a retransmit target (multifeed page document surface specifying process).

  Also, when the last page is reached while repeating the process of saving the image data of the front and back sides of the page not imprinted with the double-sided stamp S in the temporary memory area, those pages are memory full or FAX transmission is canceled. Because the page has been skipped to the last page due to a communication error, the front and back surfaces of all pages in the temporary memory area are subject to re-transmission (abnormal succeeding page original surface specifying process). At this time, the page immediately before the page stored in the temporary memory area should be a page with the front side abnormal process stop stamp SG or the back side abnormal stamp SE stamped. The front and back sides of the page and the back side of the page in the case of the back side abnormal stamp SE are also subject to re-transmission (abnormal page original surface specifying process).

  Hereinafter, each step of this process will be described in detail. When performing automatic re-transmission of an untransmitted original, steps S201, S202, and S211 to S219 shown in FIG. 41, and steps S220 to S243 shown in FIG. The retransmission mode is set, the document group is set again on the document tray 41 of the document reading device 11, and an operation for starting reading the document group is performed (Start in FIG. 41).

  The CPU 20 of the system control unit 13 determines that the setting of the retransmission mode is valid (step S201; Yes), and executes processing for performing FAX retransmission (retransmission job) after step S244 shown in FIG. .

  First, the “stamp presence / absence flag” for holding the completed stamp state of the previous page is set to ON, and the “single-sided duplex flag” for holding the type of document is not set (step S244). The stamp presence / absence flag used in this processing indicates whether or not the previous page is a stamped page of the single-sided / double-sided stamp S as in the first embodiment. It indicates that “stamp is present” (initial value), and flag off indicates that the previous page is “no stamp”. However, the stamp presence / absence flag is used in the case of a single-sided original, and is not used in the processing for a double-sided original. The single-sided double-sided discrimination flag indicates that one side is a “single-sided original” and that both sides are “double-sided original”. Not set indicates a state in which it is not specified whether the original is a single-sided original or a double-sided original.

  Next, the document reading device 11 reads images on both sides of one page of the document (step S245). If the document is a single-sided document, only the image data on the front side is displayed. Image data on the front and back sides of the document is stored in a temporary memory (steps S246 to S250).

  More specifically, first, the read image data on the surface of the document is stored in a temporary memory area of the image memory 26 (step S246). Subsequently, it is determined whether or not a memory full has occurred (step S247). If a memory full has occurred (step S247; Yes), a step is performed to perform post-processing for canceling the retransmission job. The process of S271 is executed.

  When the memory full does not occur and the read image data on the surface of the original is normally stored in the image memory 26 (step S247; No), it is determined whether or not the single-sided double-sided discrimination flag indicates single-sided (step S248). ). If one side is indicated (step S248; Yes), the image data on the back side of the document is not stored in the temporary memory area of the image memory 26, and the process proceeds to step S251. When one side is not shown (not set or both sides are shown) (step S248; No), the read image data of the back side of the document is stored in the temporary memory area of the image memory 26 (step S249).

  Subsequently, it is determined whether or not a memory full has occurred (step S250). If a memory full has occurred (step S250; Yes), a step is performed to perform post-processing for canceling the retransmission job. The process of S271 is executed. If the memory full does not occur and the read image data on the back side of the document is normally stored in the image memory 26 (step S250; No), the process proceeds to step S251.

  After the necessary image data is stored in the temporary memory area, in step S251, it is determined whether or not there is a single-sided / double-sided stamp S on the back side of the document. If there is no single-sided / double-sided stamp S (step S251; Yes), the stamp presence / absence flag is turned off (step S263), and it is determined whether or not it is the last page (step S264). (Step S264; No), the process proceeds to Step S245, and the next page is read. As described above, while there is no single-sided / double-sided stamp S, the image data of each page is stored in the temporary memory. The process for the last page (step S264; Yes) will be described later.

  When the single-sided / double-sided stamp S is present (step S251; No), it is determined whether the single-sided double-sided discrimination flag indicates single-sided (step S252). If one side is indicated (step S252; Yes), the process proceeds to step S254 in FIG. 44 for determining the type of the one-sided stamp.

  When one side is not indicated (not set or both sides are indicated) (step S252; No), it is determined whether or not the single side double side discrimination flag indicates both sides (step S253). If both sides are not shown (not set) (step S253; No), the process proceeds to step S272 in FIG. 45 for determining whether the stamp is for one side or for both sides.

  If both sides are indicated (step S253; Yes), the process proceeds to step S276 in FIG. 45 for determining the type of the double-sided stamp.

  In step S254 in FIG. 44, it is determined whether or not the type of the single-sided / double-sided stamp S stamped on the back side of the document is a single-sided abnormal stamp SB. If it is not a single-sided abnormal stamp SB (step S254; No), it is further determined whether the type of the single-sided / double-sided stamp S is a single-sided normal stamp SA (step S260). In the case of the normal stamp SA for one side (step S260; Yes) and the stamp presence / absence flag is on (step S261; Yes), only the image data of the page is stored in the temporary memory area of the image memory 26 ( Since this page is transmitted normally (determined from the normal stamp SA for one side), the final image data in the temporary memory area (one side on which the normal stamp SA for one side is stamped) The original image data) is deleted and excluded from re-transmission (step S262), and the process proceeds to step S264 to determine whether there is a next page.

  If the single-sided normal stamp SA (step S260; Yes) and the stamp presence / absence flag is off (step S261; No), the normal stamp SA for one-sided is sent as a bundle and the first page of the multi-feed page is transmitted normally. Therefore, the first image data in the temporary memory area of the image memory 26 is deleted and removed from the re-transmission target (step S258). Further, after all pages remaining in the temporary memory area (these are not multi-feeded and read) are copied to the main memory area for re-transmission (steps S255 to S257), a stamp presence / absence flag is set. Is set to ON (step S259), and the process proceeds to step S264 to determine whether there is a next page.

  If a memory full occurs midway (step S257; Yes), the process of step S271 in FIG. 43 is executed in order to perform post-processing for canceling this retransmission job.

  When the type of the single-sided / double-sided stamp S is the single-sided abnormal stamp SB (step S254; Yes), all the pages stored in the temporary memory area of the image memory 26 are subject to retransmission. That is, the one-sided abnormal stamp SB indicates that the first page of the temporary memory area is abnormal, and the next page in the temporary memory is a multi-feed page that has not been read, and is stored in the temporary memory area. Include all pages for resubmission.

  Specifically, it is determined whether or not there is image data in the temporary memory area of the image memory 26 (step S255). If there is no image data (step S255; No), the stamp presence / absence flag is set to ON (step S259), and the process proceeds to step S264 in FIG. If there is image data (step S255; Yes), the top image data existing in the temporary memory area of the image memory 26 is copied to the main memory area (step S256), and it is determined whether or not memory full has occurred. (Step S257).

  When the memory full has occurred (step S257; Yes), the process of step S271 in FIG. 43 is executed in order to perform post-processing for canceling this retransmission job. If no memory full occurs and the top image data existing in the temporary memory area of the image memory 26 is normally copied to the main memory area (step S257; No), the top image data is read from the temporary memory area. Delete (step S258) and return to the process of step S255.

  If the type of the single-sided stamp S stamped on the back side of the document is neither a single-sided normal stamp SA nor an abnormal stamp SB (step S260; No), post-processing for canceling this retransmission job is performed. In addition, the process of step S271 is executed. Note that the negative determination in step S260 occurs when the type of the single-sided stamp S could not be finally identified due to stamp rubbing or paper stains.

  If it is determined in step S253 in FIG. 43 that the single-sided / double-sided discrimination flag does not indicate both sides (not set) (step S253; No), and the process proceeds to step S272 in FIG. 45, provisionally in step S272. The single-sided / double-sided discrimination flag is set to single-sided, and it is determined whether or not the type of the single-sided / double-sided stamp S stamped on the back side of the document is a single-sided abnormal stamp SB (step S273).

  If it is the one-sided abnormal stamp SB (step S273; Yes), the process proceeds to step S288 in FIG. In this case, since the one-sided abnormal stamp SB indicates that the first page in the temporary memory area has not been transmitted, the front surfaces of all pages in the temporary memory area are to be retransmitted (steps S288 to S288). S292). However, since the image data on the back side of each page is also stored in the temporary memory area, they are not subject to retransmission.

  More specifically, the image data on the front surface is copied from the temporary memory area of the image memory 26 to the main memory area in step S289 to be retransmitted, and then the image data on the front surface is deleted from the temporary memory area in step S291. In step S292, the back side image data is deleted from the temporary memory area without being copied to the main memory area. If the memory becomes full on the way (step S290; Yes), the process of step S271 in FIG. 43 is executed in order to perform post-processing to cancel this retransmission job.

  If it is not a single-sided abnormal stamp SB (FIG. 45, step S273; No), it is determined whether or not the type of the single-sided / double-sided stamp S stamped on the back side of the document is a single-sided normal stamp SA. If it is a single-sided normal stamp SA (step S274; Yes), the process proceeds to step S291 in FIG.

  In this case, since the normal stamp SA for one side indicates that the first page in the temporary memory area has been normally transmitted, the first page in the temporary memory area is excluded from re-transmission targets and the second and subsequent pages. Make the surface of the target of retransmission. That is, first, in step S291 and S292, the image data on the front and back surfaces of the first page is deleted from the temporary memory area, and then the process proceeds to step S288, so that only the front surface of each page on and after the second page is deleted from the temporary memory area. It is copied to the main memory area to be retransmitted (steps S288 to S292).

  If it is neither the single-sided abnormal stamp SB nor the single-sided normal stamp SA (FIG. 45, step S274; No), after setting the single-sided double-sided discrimination flag to double-sided assuming that the stamp is a double-sided stamp S (step S275), it is determined whether or not the type of the single-sided / double-sided stamp S stamped on the back side of the document is the double-sided abnormal stamp SD (step S276). Also, when it is determined in step S253 of FIG. 43 that the single-sided / double-sided discrimination flag indicates both sides (step S253; Yes), the processing from step S276 is performed.

  If the type of the single-sided / double-sided stamp S is the double-sided abnormal stamp SD (step S276; Yes), the process proceeds to step S283 in FIG. In this case, the front and back surfaces of all pages stored in the temporary memory area are to be retransmitted. That is, the information indicating the normality / abnormality of the front surface of the double-sided stamp S (the triangle on the left side) indicates whether or not the front surface of the first page of the temporary memory area has not been transmitted. / Information indicating abnormality (the triangle on the right side) indicates whether or not the back side of the last page of the temporary memory area has not been transmitted. In addition, when two or more pages are stored in the temporary memory area, these are multi-feed pages, so the image data of each document surface from the back of the first page to the front of the last page in the temporary memory area is subject to retransmission. Should be.

  Therefore, when the type of the single-sided / double-sided stamp S is the double-sided abnormal stamp SD (step S276; Yes), the front and back surfaces of all pages stored in the temporary memory area are targeted for retransmission.

  Specifically, it is determined whether or not there is image data in the temporary memory area of the image memory 26 (step S283). If there is image data (step S283; Yes), it exists in the temporary memory area of the image memory 26. The first image data is copied to the main memory area (step S284), and it is determined whether or not a memory full has occurred (step S285).

  When the memory full occurs (step S285; Yes), the process of step S271 in FIG. 43 is executed in order to perform post-processing for canceling this retransmission job. When the memory full does not occur and the head image data existing in the temporary memory area of the image memory 26 is normally copied to the main memory area (step S285; No), the head image data is read from the temporary memory area. Delete (step S286) and return to the process of step S283.

  When there is no image data in the temporary memory area (step S283; No), the stamp presence / absence flag is set to ON (step S287), and the process proceeds to the process of step S264 in FIG. .

  If the type of the single-sided / double-sided stamp S is not the double-sided double-sided abnormal stamp SD (FIG. 45, step S276; No), the type of the single-sided / double-sided stamp S stamped on the back side of the document is for double-sided documents. It is determined whether or not it is the back surface abnormal stamp SE (step S277). If it is the back surface abnormal stamp SE (step S277; Yes), the process proceeds to step S286 in FIG.

  Since the back side abnormal stamp SE indicates that the front surface of the first page in the temporary memory area has been normally transmitted and the back side of the last page in the temporary memory area is abnormal (not transmitted), the process proceeds to step S286. First, after deleting the first page of the temporary memory area, the process returns to step S283, and the remaining original surfaces are set as retransmission targets (steps S283 to S287).

  When the type of the single-sided / double-sided stamp S is not the back side abnormal stamp SE (step S277; No), the type of the single-sided / double-sided stamp S stamped on the back side of the original is the front side abnormal stamp SF for double-sided originals. Whether or not (step S278).

  The front surface abnormal stamp SF is normal (not transmitted) on the front surface of the first page in the temporary memory area, and the rear surface of the last page in the temporary memory area (the page on which the front surface abnormal stamp SF is pressed) is transmitted normally. It has been shown. Therefore, in the case of the surface abnormality stamp SF (step S278; Yes), the final image data existing in the temporary memory area of the image memory 26 is deleted (step S279), and is excluded from the re-transmission target. In step S283, all other document surfaces remaining in the temporary memory area are subject to retransmission (steps S283 to S287).

  If the type of the single-sided / double-sided stamp S is not the front side abnormal stamp SF (step S278; No), the type of the single-sided / double-sided stamp S stamped on the back side of the original is the front side abnormal process stop stamp SG for the double-sided original. It is determined whether or not (step S280).

  The surface abnormality process stop stamp SG indicates that the surface of the first page in the temporary memory area is abnormal (untransmitted) and the subsequent pages are skipped and not transmitted. Therefore, if it is the front surface abnormal process stop stamp SG (step S280; Yes), the process proceeds to step S283 in FIG. 46, and the front and back surfaces of all pages in the temporary memory area are targeted for retransmission ( Steps S283 to S287).

  If the type of the single-sided / double-sided stamp S is not the front surface abnormal process stop stamp SG (step S280; No), whether or not the type of the single-sided / double-sided stamp S stamped on the back side of the document is the double-sided normal stamp SC. Is determined (step S281).

  In the double-sided normal stamp SC, the front surface of the first page in the temporary memory area is normally transmitted, and the back surface of the last page in the temporary memory area (the page on which the double-sided normal stamp SC is pressed) is normally transmitted. Is shown. Therefore, in the case of the double-sided normal stamp SC (step S281; Yes), the final image data existing in the temporary memory area of the image memory 26 is first deleted (step S282), and then the process proceeds to step S286 in FIG. Then, after deleting the first page of the temporary memory, the normally transmitted page is excluded from re-transmission, and the process returns to step S283, and only the remaining document surface is re-transmitted (steps S283 to S287). ).

  If the type of the single-sided / double-sided stamp S is not the double-sided normal stamp SC (step S281; No), the process of step S271 in FIG. 43 is executed in order to perform post-processing to cancel this retransmission job. . In addition, in the case where the negative determination is made in step S281, that is, the case where the type of the single-sided / double-sided stamp S does not correspond to any of the types, the type of the single-sided / double-sided stamp S could not be finally identified. Can occur in some cases.

  As described above, through the series of processing from step S272 to step S281, the type of the single-sided / double-sided stamp S imprinted on the back side of the read original is identified. Is automatically determined. Further, in this process, the single-sided / double-sided discrimination flag is set to single-sided or double-sided, and a document to be read thereafter is subjected to single-sided or double-sided processing based on the single-sided / double-sided flag.

  In step S264 in FIG. 43, it is determined whether or not the document is the last page. If the document is the last page (step S264; Yes), the process proceeds to step S265 to perform FAX retransmission.

  In step S265, it is determined whether the single-sided / double-sided determination flag is single-sided or double-sided. If it is not single-sided or double-sided (step S265; No), it is correctly recognized whether the stamp S is a single-sided stamp or a double-sided stamp. Therefore, the process proceeds to step S271, and post-processing for canceling the retransmission job is performed.

  If the stamp S can be recognized for one side or both sides (step S265; Yes), it is determined whether or not there is image data in the temporary memory area of the image memory 26 (step S266).

  If there is no image data (step S266; No), the process proceeds to step S270, and if there is image data stored in the main memory area of the image memory 26, FAX transmission (retransmission) of the image data is performed. Execute, erase all the image data in the main memory area after FAX transmission (step S271), and terminate the retransmission job (End). If there is no image data stored in the main memory area of the image memory 26, no processing is performed (no re-transmission), the process proceeds to step S271, and the re-transmission job is terminated (End).

  If there is image data in the temporary memory (step S266; Yes), those pages are pages after the last detected single-sided / double-sided stamp S, that is, pages skipped at the time of initial transmission. . For example, the image data of the front and back surfaces of the page without the double-sided stamp S is stored in the temporary memory area, and the last page is obtained while the processes from step S245 to S251 (step S251; Yes) and steps S263 and S264 are repeated. If it is found (step S264; Yes), these pages are determined to be pages that have been skipped to the last page due to a communication error that causes memory full or FAX transmission to be stopped.

  Therefore, all pages in the temporary memory area after being determined as the last page are subject to retransmission. Specifically, the first image data existing in the temporary memory area of the image memory 26 is copied to the main memory area (step S267), and it is determined whether or not a memory full has occurred (step S268).

  When the memory full has occurred (step S268; Yes), the process of step S271 is executed in order to perform post-processing for canceling this retransmission job. When no memory full occurs and the first image data existing in the temporary memory area of the image memory 26 is normally copied to the main memory area (step S268; No), the first image data is read from the temporary memory area. Delete (step S269) and return to the process of step S266.

  When a series of processing from step S266 to step S269 is performed in this way, the image data on the front and back surfaces of all pages (pages skipped) in the temporary memory area are transferred from the temporary memory area of the image memory 26 to the main memory. It is moved to the area and is subject to retransmission (abnormal succeeding page specifying process). In steps S266 to S269, the same processing as that in steps S137 to S140 (see FIG. 15) described in the first embodiment is performed.

  By performing the above processing, (5) “multi-feed page original surface specifying process”, (6) “abnormal page original surface specifying process”, (7) “abnormal first page original surface specifying process”, (8 ) Each function of “abnormal succeeding page original surface specifying process” is realized.

  (6) In the case of “abnormal page document surface specifying process”, there is an abnormal stamp for both sides (either one of double-sided abnormal stamp SD / back side abnormal stamp SE / front side abnormal stamp SF / front side abnormal processing stop stamp SG). In the document processing, if the document with the stamp is not multi-feeded, that is, if there is an abnormal stamp for both sides on the first page read, or the page next to the page with the abnormal stamp for both sides If there is a double-sided abnormal stamp on the page when it is read, or if there is a double-sided abnormal stamp on the page when the page following the page with the double-sided normal stamp SC is read An original with an abnormal stamp for both sides has an abnormal surface (both sides / back side / front side) indicated by the abnormal stamp as F. The re-transmitted for a document surface X unsent.

  In the processing of this double-sided original, this time reading is performed from step S244 to step S253 in a state where no image data is stored in the temporary memory area of the image memory 26 (a state in which no page without the stamp S exists). The image data on the front side and the image data on the back side of the double-sided document are stored in the temporary memory area in that order. Thereafter, when the single-sided / double-sided determination flag is “not set” (initial value) (step S253; No), the process proceeds to step S272, or when the single-sided double-sided determination flag is “double-sided” (step S253; Yes). Shifts to step S276, and the type of the double-sided stamp S is identified in any of steps S276, S277, S278, S280, and S281. Then, the normal image data of the original surface is deleted from the temporary memory area according to the type of the double-sided stamp S of the double-sided document read this time by the processing of step S279 or step S282 or steps S283 to S286, and thereafter By copying only the remaining image data of the document surface to the main memory area, only the image data of the document surface that has become abnormal is stored in the main memory area and is subject to retransmission.

  Specifically, in step SS276, only the image data on the front and back surfaces of the page with the stamp is stored in the temporary memory area. If this page is a double-sided document having a double-sided abnormal stamp SD, the process proceeds from step S276 to step S283 (step S276; Yes), and the image data on the front side is stored in the main memory area in step S284 for the first time. In step S286, the image data on the front side is deleted from the temporary memory area, the image data on the back side is saved in the main memory area in the subsequent step S284, and the image data on the back side is deleted from the temporary memory area in step S286. The image data on the front and back surfaces are subject to retransmission.

  In the case of a double-sided document having the front surface abnormal process stop stamp SG, the process proceeds from step S280 to step S283 (step S280; Yes), and the same processing as that of the double-sided abnormal stamp SD is performed, and each image on the front and back sides is processed. Data is subject to retransmission.

  In the case of a double-sided document having a back surface abnormal stamp SE, the process proceeds from step S277 to step S286 (step S277; Yes). In the first step S286, the image data on the front side is deleted from the temporary memory area. Are stored in the main memory area, and in the next step S286, the back side image data is deleted from the temporary memory area, and only the back side image data is subject to retransmission.

  In the case of a double-sided document having the front surface abnormal stamp SF, the process proceeds from step S278 to step S279 (step S278; Yes), and the back side image data is deleted from the temporary memory area in step S279, and the subsequent processing from step S283 is performed. Thus, after the image data on the front side is stored in the main memory area, it is deleted from the temporary memory area, and only the image data on the front side is targeted for retransmission.

  In the case of a double-sided document having a double-sided normal stamp SC, the process proceeds from step S281 to step S282 (step S281; Yes), and the image data on the back side is deleted from the temporary memory area in step S282. The image data is deleted from the temporary memory area, and the front and back image data are excluded from the retransmission target.

  (5) To illustrate the case of “multi-feed page original surface specifying process”, a double-sided original that has been multi-feeded and has not been stamped with the double-sided stamp S is step S245 to S251 (step S251; Yes) and steps S263 and S264. The image data on the front and back surfaces are stored in the temporary memory area of the image memory 26 through the series of processes described above. Thereafter, when a double-sided document having a double-sided stamp S is read (step S251; No), a series of processing from step S276 is performed. In a series of processes after step S276, the image data of the back side of the original without the double-sided stamp S and the image data of the front side of the original of the next page stored in the temporary memory area are read from the temporary memory area of the image memory 26. It is moved to the main memory area to be retransmitted.

  (7) In the case of “abnormal first page document surface specifying process”, when the type of the double-sided stamp S is the double-sided normal stamp SC or the back-side abnormal stamp SE indicating normality of the front side, the steps after step S276 are performed. Through a series of processes, the image data on the surface of the first page in the multi-feeded bundle of page groups, that is, the first image data in the temporary memory area is deleted and excluded from retransmission targets. When the type of the double-sided stamp S is the double-sided abnormal stamp SD, the front side abnormal stamp SF, or the front side abnormal processing stop stamp SG indicating the back side abnormality, the image data of the front page of the first page in the temporary memory area is transferred to the main memory area. Moved to be retransmitted.

  When the type of the double-sided stamp S is the double-sided normal stamp SC or the front side abnormal stamp SF indicating the normality of the back side, a series of processes after step S276 described above is performed, so that The image data on the back side of the last page (the page on which the double-sided stamp S is stamped), that is, the last image data in the temporary memory area is excluded from retransmission targets. When the type of the double-sided stamp S is a double-sided abnormality stamp SD indicating a back side abnormality, a back side abnormal stamp SE, or a front side abnormal processing stop stamp SG, the image data on the back side of the last page in the temporary memory area is transferred to the main memory area. Moved to be retransmitted (abnormal page document surface specifying process).

  (8) In the case of “abnormal succeeding page original surface specifying process”, it is determined that the double-sided stamp S is not stamped on the original read and stored in the temporary memory area (step S251; Yes), and In the case of the last page (step S264; Yes), all the original surfaces stored in the temporary memory area at that time are retransmitted (steps S266 to S270).

  The above is the flow of FAX retransmission processing using the retransmission mode according to the present embodiment. By performing this processing for each document group (double-sided document) of the stamp pattern shown in FIGS. The original surface to be retransmitted by FAX is automatically identified and retransmitted automatically. The processing of single-sided originals differs from that in the first and second embodiments in whether image data of an original stamped with a stamp S is stored in a temporary memory. However, the functions are the same, and the functions (1) to (4) in the retransmission mode are realized.

  As described above, in the document reading apparatus 11 according to the present embodiment that supports both-sided document processing in addition to single-sided document processing, the above-described processings (5) to (8) are combined and the document to be retransmitted with respect to the duplex document. By specifying the page, FAX is not sent even if reading abnormalities such as original multi-feed, communication error (transmission stoppage / error page other than error occurrence page is sent), memory full, etc. occur alone or in combination. Therefore, it is possible to accurately identify each document surface of a duplex document that needs to be retransmitted. In addition, the user can set the retransmission mode through the operation unit 12 and cause the document reading device 11 to read the document group again. Based on the reading result of the double-sided stamp of each double-sided document, Each document surface is automatically identified and retransmitted.

  Further, when the document is read again, the type of the document (single side / both sides) is automatically determined based on the type of the single-sided / double-sided stamp S stamped on the original. Does not need to be manually input and set in advance.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  For example, the type of stamp as an identification mark to be given (stamped) to a document is not limited to a circular mark (“●” / “○”) or a diamond mark, but the processing state is normal or abnormal, and In this case, it is only necessary that each processing state on the front and back surfaces can be identified, and other marks (patterns), symbols, characters, and the like may be used.

  In the embodiment, the main memory (area) and the temporary memory (area) use the memory (image memory 26) for storing the image data of the original in order to specify the original (original surface) to be retransmitted. The image data of a document (document surface) that may be subject to re-transmission is temporarily stored in the temporary memory, but control is performed using only the main memory without using the temporary memory. You may do it. That is, a method may be used in which all read pages are stored in the main memory, image data of a document (document surface) that does not require retransmission is deleted, and the remaining document surface is retransmitted. The processing procedure for specifying the document (document surface) to be retransmitted is not limited to the procedure described in the embodiment, and depends on the status of the identification mark (stamp pattern) reflecting each phenomenon that has caused the FAX not to be transmitted. Any procedure can be used as long as it can realize the function of accurately specifying the document (document surface) to be retransmitted. That is, (1) multi-feed original specifying process, (2) abnormal original specifying process, (3) abnormal first page specifying process, (4) abnormal subsequent page specifying process, and (5) multi-feed for single-side original. Any procedure may be used as long as it can realize page original surface specifying processing, (6) abnormal page original surface specifying processing, (7) abnormal first page original surface specifying processing, and (8) abnormal subsequent page original surface specifying processing.

  In the embodiment, the document reading apparatus includes the first reading optical system 35 and the second reading optical system 36 and can read the front and back surfaces of the document at the same time. The present invention can also be applied to a configuration in which the front and back surfaces of a document are read at different timings with a single reading optical system. In that case, the switching of reading of the front and back sides of the document is performed by the user manually reversing the direction of the document placed on the document tray, or the automatic document feeder 16 is automatically provided with a reversing mechanism for reversing the document. It is possible by doing so.

  Further, in the embodiment, the digital multifunction machine having a copy function, a scanner function, a printer function, etc. in addition to a facsimile function for reading a document group and transmitting it by FAX has been described as an example. And a scanner device, or an electronic storage device that reads a group of documents and stores the document image as electronic data, a data transfer device that reads the group of documents and converts the document image into electronic data, and transfers the data to an external device. Can be applied.

1 is a control block diagram illustrating a main configuration of an image forming apparatus including a document reading device according to an embodiment of the present invention. 1 is a circuit configuration diagram showing a main configuration of a system control unit of an image forming apparatus according to an embodiment of the present invention. 1 is a configuration diagram showing a configuration of an automatic document reading device and a document reading optical system according to an embodiment of the present invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the single-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern stamped on the back surface of the single-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern stamped on the back surface of the single-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern stamped on the back surface of the single-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern stamped on the back surface of the single-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern stamped on the back surface of the single-sided document which concerns on embodiment of this invention. FIG. 5 is a table showing FAX transmission completion page No, FAX retransmission target page No, and remarks corresponding to the stamp pattern of FIG. 4. FIG. 6 is a table showing FAX transmission completion page No, FAX retransmission target page No, and remarks corresponding to the stamp pattern of FIG. 5. FIG. 17 is a table showing FAX transmission completion page No, FAX retransmission target page No, and remarks corresponding to the stamp patterns of FIGS. 6 (F-1) to (F-15). FIG. 17 is a table showing FAX transmission completion page numbers, FAX retransmission target page numbers, and remarks corresponding to the stamp patterns of FIGS. 6 (F-16) to (F-31). 6 is a flowchart showing operations of a FAX transmission and a stamp function for a single-sided document by the document reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for a single-sided document by the document reading apparatus according to the embodiment of the present invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the stamp pattern formed in the back surface of the double-sided document which concerns on embodiment of this invention. FIG. 40 is a table showing a FAX transmission completion page number, a FAX retransmission target page number, and remarks corresponding to the stamp pattern (part) of FIGS. 6 is a flowchart showing operations of FAX transmission and a stamp function for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing operations of FAX transmission and a stamp function for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention. 6 is a flowchart showing an operation in a retransmission mode for single-sided and double-sided originals by the original reading apparatus according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Image forming apparatus 11 ... Document reading apparatus 12 ... Operation part 13 ... System control part 14 ... Engine control part 15 ... Document reading optical system 16 ... Automatic document feeder 17 ... Printer engine 18 ... Finisher 19 ... Display part 20 ... CPU
21 ... Bus 22 ... CPU memory 23 ... Flash ROM / HDD
24 ... NVRAM
25 ... Bus 26 ... Image memory 27 ... Image processing ASIC
28 ... Image rotation ASIC
29 ... Image compression / decompression ASIC
30 ... DMA controller 31 ... FAX unit 32 ... CCD image sensor / LD
33 ... Public line 34 ... CPU
35 ... 1st reading optical system 36 ... 2nd reading optical system 37 ... Reflecting mirror 38 ... Lens 40 ... Apparatus main body 41 ... Document tray 42 ... Discharge tray 43 ... Pickup roller 44 ... Carrying path 45 ... Conveying roller 46 ... Unloading Path 47 ... Conveying roller 48 ... Discharge roller 49 ... Partition 50 ... Stamp mechanism M ... Original (single-sided / double-sided original)
MF ... Front side MR ... Back side RP1 ... Reading position RP2 ... Reading position S ... Stamp (single-sided stamp / double-sided stamp)
SA ... Normal stamp SB ... Abnormal stamp SC ... Double-sided normal stamp SD ... Double-sided abnormal stamp SE ... Back side abnormal stamp SF ... Front side abnormal stamp SG ... Surface abnormal processing stop stamp

Claims (13)

Reading means for reading the front and back surfaces of each original in a group of originals composed of a plurality of originals;
An identification mark applying means for applying an identification mark to the back surface of each document read by the reading means;
Reread setting means for setting rereading of the group of documents read by the reading means;
A document specifying unit for specifying a document to be reprocessed according to the status of an identification mark on the back surface of each document read by the reading unit when rereading is set by the reread setting unit;
A document reading apparatus characterized by comprising: When re-reading is set by the re-read setting unit, when a document having the identification mark not attached to the back side is read, the document on the next page of the document is specified as the document to be reprocessed. The document reading device according to claim 1. When re-reading is set by the re-read setting unit, when a document having an identification mark indicating a processing error is read on the back side, the document is specified as the document to be reprocessed. The document reading apparatus according to claim 1. When re-reading is set by the re-read setting unit, when a document having an identification mark indicating a processing error is read on the back side, a document having no identification mark connected in front of the document is read. The document reading apparatus according to claim 1, wherein a first top page is specified as the document to be reprocessed. When re-reading is set by the re-read setting unit, after reading a document having an identification mark indicating a processing error on the back side, there was no identification mark on the back side of all the subsequent pages. 5. The document according to claim 1, wherein all documents after the document having an identification mark indicating the processing error on the back side are specified as the document to be reprocessed. Document reader. The identification mark includes a single-sided identification mark used for a single-sided original and a double-sided identification mark used for a double-sided original,
The document specifying unit specifies the document to be reprocessed when it is determined that the identification mark read by the reading unit is the single-sided identification mark. The document reading device described in the item. Reading means for reading the front and back surfaces of each original in a group of originals composed of a plurality of originals;
An identification mark applying means for applying an identification mark to the back surface of each document read by the reading means;
Reread setting means for setting rereading of the group of documents read by the reading means;
A document specifying unit that specifies a document surface to be reprocessed according to a status of an identification mark on the back surface of each document read by the reading unit when rereading is set by the reread setting unit;
A document reading apparatus characterized by comprising: When re-reading is set by the re-read setting unit, when a document having the identification mark not attached to the back side is read, the back side of the document and the front side of the next page are set as the reprocessing target. The document reading device according to claim 7, wherein the document is specified on a document surface. When re-reading is set by the re-read setting unit, when an original having an identification mark indicating a processing error on at least one of the front and back sides is read, the identification mark of the original is The document reading apparatus according to claim 7, wherein a surface indicating a processing error is specified as the document surface to be reprocessed. When re-reading is set by the re-read setting unit, when an original having an identification mark indicating a processing error on the front side is read on the back side, no identification mark is added in front of the original. The document reading apparatus according to claim 7, wherein a surface of a first page in the document is specified as the document surface to be reprocessed. When re-reading is set by the re-read setting means, an identification mark indicating that the processing error on the front or back side or the processing error on the back side or the front side is a processing error and the back side is unprocessed is given to the back side. After reading the original, if there is no identification mark on the back side of all the originals on and after the next page, among the originals with the identification mark indicating the processing error on the back side, the identification mark is a processing error. 11. The surface indicating the image and the surface where the identification mark indicates unprocessed, and the front and back surfaces of all originals after the original are specified as the original surface to be reprocessed. 11. The document reading device described in the item. The identification mark includes a single-sided identification mark used for a single-sided original and a double-sided identification mark used for a double-sided original,
12. The document specifying unit, when determining that the identification mark read by the reading unit is the double-sided identification mark, specifies the document surface to be reprocessed. The document reading apparatus according to Item 1. The reading means comprises a first reading means for reading the front side of the document and a second reading means for reading the back side of the document. The document reading device described in the item.

Images