JP2021170737A - Image reading device and image forming apparatus - Google Patents

Abstract

To place again a document that has caused paper jam together with unread documents on a document tray to complete the conveyance and reading of the documents, and subsequently appropriately support operations to compensate for the excess or deficiency of the read documents.SOLUTION: In an image forming apparatus 10, a control unit 46 counts the first number of documents N1 that are read by a reading unit 30 from the start of conveyance of documents performed by a document conveying unit 20, if paper jam occurs during the conveyance of documents, stops the conveyance of documents, after the paper jam is resolved, resumes the conveyance of documents, counts the second number of documents N2 that are read after the resumption, calculates the number of insufficient read documents J based on the sum of the first number N1 and the second number N2 and the total number of documents Q, determines the order of pages of the insufficient number of documents J, and displays the determined order of pages on a display 41.SELECTED DRAWING: Figure 4

Description

The present invention relates to an image reading device for reading an image of the original while transporting the original and an image forming apparatus including the image reading device, and more particularly to a technique for supporting work when resuming reading of a document interrupted by a jam.

In the image reading device, a plurality of documents are sequentially pulled out from the document tray and conveyed through the transport path, the images of the documents being conveyed are sequentially read, and the documents are ejected to the ejection tray. In addition, if a jam occurs during the transfer of the document, the pulling out or transfer of the document is temporarily stopped. The user takes out a document stuck in a transport path or the like, sets the document together with an unread document in the document tray again, and restarts and continues the transfer and reading of the document.

In Patent Document 1, the page order of the scanned image is recognized and page order information indicating the page order is generated. When a jam occurs and the reading operation is stopped, which manuscript is used from the page order information. It is determined whether or not the document has been read up to, the document that has not been scanned is identified, and a message prompting the user to read the specified document is displayed on the operation panel so that the scanning operation can be continued.

Further, in Patent Document 2, the originals are conveyed one by one, the image of the original is read by the scanner unit, the scan data indicating the image is stored in the storage medium, and the identification information is added to the end of the scan data. When the scanning of the original is completed, all the scanned data is converted into a file in a predetermined format. If an error occurs during reading of the original, unnecessary scan data to which identification information is not given is deleted, and the image of the last scan data to which identification information is given is reduced and displayed on the display. The user is notified of the document that needs to be scanned by displaying the page order of the document in which an abnormality has occurred during scanning on the display unit. Then, when the reading is restarted after the abnormality is recovered, the scan data captured from the scanner unit is continuously stored in the scan data before the abnormality occurs.

Japanese Unexamined Patent Publication No. 2006-327728 Japanese Unexamined Patent Publication No. 2010-109896

However, it is difficult for the user to determine the page order of the documents in the process of being transported even if the documents that are clogged in the transport path or the like are taken out. In Patent Document 1, the page order of a manuscript whose image reading has not been completed is specified, and a message prompting the reading of the manuscript in the specified page order is displayed. There is a possibility of making a mistake in selecting the required manuscript. Further, in Patent Document 2, the image of the last scan data is reduced and displayed on the display unit, or the page order of the original document in which an abnormality occurs during scanning is displayed on the display unit. It is difficult to judge, and there is a possibility of making a mistake in selecting a document that needs to be read.

If the originals are selected incorrectly, the read originals may be reloaded in the original tray, or the unread originals may not be set in the original tray, resulting in excess or deficiency of the scanned originals.

Conventionally, a technique for appropriately supporting the work for compensating for the excess or deficiency of such a scanned document after the reading of the document is completed has not been provided.

The present invention has been made in view of the above circumstances, and after the jammed manuscript is set again in the manuscript tray together with the unread manuscript and the transporting and reading of the manuscript are completed, the read manuscript is overloaded. The purpose is to properly support the work to make up for the shortage.

The image reading device according to one aspect of the present invention includes a display unit, a document conveying unit that sequentially conveys a plurality of documents through a conveying path, a reading unit that reads an image of a document conveyed through the conveying path, and a user. The operation unit is operated by The control unit includes a control unit for causing the scanning unit to read the conveyed document, and the control unit counts the first number of documents read by the scanning unit from the start of transporting the document by the document transporting unit. Then, when a jam is detected by the jam detection unit during the transfer of the document by the document transfer unit, the document transfer unit is stopped, and when the jam is no longer detected by the jam detection unit, the document is transferred by the document transfer unit. The transport is restarted, the second number of documents read by the reading unit is counted after the restart, and the reading unit reads the first number and the second number of documents based on the sum of the first and second sheets and the total number of documents. The number of shortages of the obtained manuscripts is calculated, and the page order of the manuscripts corresponding to the shortage is determined based on the total number of sheets, the shortage number, the first number of sheets, or the second number of sheets, and the determined page order is determined. Is displayed on the display unit.

According to the present invention, the work for compensating for the excess or deficiency of the read original after the jammed original is set in the original tray together with the unread original and the conveying and reading of the original are completed is appropriate. Can help.

It is sectional drawing which shows the image forming apparatus to which the image reading apparatus of one Embodiment which concerns on this invention is applied. It is sectional drawing which shows the image reading apparatus of this embodiment. It is a perspective view which shows the appearance of an image reader. It is a functional block diagram which shows the main internal structure of an image forming apparatus. The page order of the insufficient number of documents not read by the image reading device is determined, the determined page order is displayed, and the page order of the excess number of documents read by the image reading device is determined. It is a flowchart which shows the process of erasing and canceling the image of the page order. (A) is a diagram showing a procedure for determining the page order of the insufficient number of originals that could not be read by the image reader, and (B) is another procedure for determining the page order of the insufficient number of originals. It is a figure which shows. (A) is a diagram showing a procedure for determining the page order of the excess number of originals read by the image reader, and (B) is another procedure for determining the page order of the excess number of originals read by the image reader. It is a figure which shows.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing an image forming apparatus to which the image reading apparatus of one embodiment according to the present invention is applied. The image forming device 10 includes an image reading device 11 and an image forming unit 12.

The image reading device 11 has an image pickup element that optically reads the image of the document, and the analog output of the image pickup element is converted into a digital signal to generate image data indicating the image of the document.

The image forming unit 12 prints the image indicated by the image data on a recording paper, and has an image forming unit 3M for magenta, an image forming unit 3C for cyan, an image forming unit 3Y for yellow, and black. The image forming unit 3Bk of the above is provided. In each of the image forming units 3M, 3C, 3Y, and 3Bk, the surface of the photoconductor drum 4 is uniformly charged, the surface of the photoconductor drum 4 is exposed, and an electrostatic latent image is formed on the surface of the photoconductor drum 4. Is formed, the electrostatic latent image on the surface of the photoconductor drum 4 is developed into a toner image, and the toner image on the surface of the photoconductor drum 4 is transferred to the intermediate transfer belt 5. As a result, a color toner image is formed on the intermediate transfer belt 5. The toner image of this color is secondarily transferred to the recording paper P conveyed from the paper feed unit 14 through the transfer path 8 in the nip area N between the intermediate transfer belt 5 and the secondary transfer roller 6.

After that, the recording paper P is heated and pressurized by the fixing device 15, the toner image on the recording paper P is fixed by thermocompression bonding, and the recording paper P is further discharged to the discharge tray 17 through the discharge roller 16.

Next, a schematic configuration of the image reading device 11 will be described. FIG. 2 is a cross-sectional view showing the mechanical configuration of the image reading device 11. Further, FIG. 3 is a perspective view showing the appearance of the image reading device 11, showing a state in which the document transporting unit 20 is opened.

As shown in FIGS. 2 and 3, the image reading device 11 includes a document transporting unit 20 and a scanning unit 30. The document transport section 20 includes a document tray 21, a paper feed roller 22, a resist roller 23, a transport path 24, a plurality of transport rollers 26, a paper discharge roller 27, a document discharge tray 28, and the like. Further, the reading unit 30 includes a first platen glass 31, a second platen glass 32, a carriage 34, an optical system unit 35, a condenser lens 36, a CCD sensor 37, and the like.

Two hinges 38 are provided at one end of the upper surface 30a of the reading unit 30 so as to be separated from each other. Operation is possible.

Here, in the image reading device 11, the first mode for reading the image of the document G placed on the second platen glass 32 and the second mode for reading the image of the document G while transporting the document G by the document transporting unit 20. It is possible to switch between two modes. For example, the first sensor 51 (shown in FIG. 4) that detects the document G placed on the second platen glass 32, and the second sensor 51 (shown in FIG. 4) that detects the document G placed on the document tray 21 of the document transport unit 20. A sensor 52 (shown in FIG. 4) is provided. The first mode is selected and set when the document G is detected by the first sensor 51, and the second mode is selected and set when the document G is detected by the second sensor.

In the first mode, the document transport unit 20 is opened, the document G is placed on the second platen glass 32 in a state where the second platen glass 32 of the scanning unit 30 is open, and the document transport unit 20 is further placed. Is closed, and the document G placed on the second platen glass 32 is pressed by the document transport unit 20. In the reading unit 30, the light of the light source 34A of the carriage 34 is transmitted to the document through the second platen glass 32 while the carriage 34 and the optical system unit 35 are moved in the sub-scanning direction X while maintaining a predetermined speed relationship. G is irradiated, and the light reflected by the document G is reflected by the mirror 34B of the carriage 34. Further, this light is reflected by the mirror 35A and the mirror 35B of the optical system unit 35 and is incident on the CCD sensor 37 through the condenser lens 36. The CCD sensor 37 repeatedly reads the image of the document G in the main scanning direction Y (the direction orthogonal to the sub-scanning direction X).

Further, in the second mode, with the document transport section 20 closed, the paper feed rollers 22 of the document transport section 20 pull out the documents G placed on the document tray 21 one by one, and the resist roller 23. The document G is conveyed in the sub-scanning direction X through the transfer path 24 by each transfer roller 26, and the document G is discharged from the paper ejection roller 27 to the document ejection tray 28 through the first platen glass 31. The reading unit 30 positions the carriage 34 and the optical system unit 35 at predetermined positions below the first platen glass 31, and irradiates the document G with the light of the light source 34A of the carriage 34 through the first platen glass 31. The light reflected by the document G is reflected by the mirrors 34B, 35A, and 35B, incident on the CCD sensor 37 through the condenser lens 36, and the image of the document G is repeatedly read by the CCD sensor 37 in the main scanning direction Y. Let me.

Next, the configuration related to the control of the image forming apparatus 10 will be described. FIG. 4 is a functional block diagram showing a main internal configuration of the image forming apparatus 10. As shown in FIG. 4, the image forming apparatus 10 includes an image reading device 11, an image forming unit 12, a display unit 41, an operation unit 42, a touch panel 43, a storage unit 44, an image memory 47, a control unit 45, and the like. .. These components are capable of transmitting and receiving data or signals through the bus to each other.

The image reading device 11 is provided with a first sensor 51 and a second sensor 52. The first sensor 51 detects the document M placed on the second platen glass 32 of the document transfer unit 20, and the second sensor 52 detects the document M placed on the document tray 21 of the document transfer unit 20. Is detected. For example, the first sensor 51 and the second sensor 52 are transmissive or reflective optical sensors.

The display unit 41 is composed of a liquid crystal display (LCD) or the like, but in the present embodiment, since it is not necessary to display an image in detail, high performance is not required for the display function.

The operation unit 42 includes hard keys such as a numeric keypad, an enter key, and a start key.

A touch panel 43 is superimposed on the screen of the display unit 41. The touch panel 43 detects a contact (touch) of a user's finger or the like with respect to the touch panel 43 together with the contact position, and inputs a user's instruction to the screen of the display unit 41. The touch panel 43 is also an example of an operation unit within the scope of claims.

The storage unit 44 includes a RAM, a large-capacity HDD (Hard Disk Drive), and the like, and stores various data and programs.

The image memory 47 stores image data indicating an image of the document G read by the image reading device 11.

The control unit 45 is composed of a processor, a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The processor is, for example, a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an MPU (Micro Processing Unit), or the like. The control unit 45 functions as the control unit 46 when the control program stored in the ROM or the storage unit 44 is executed by the processor.

The control unit 46 controls the overall control of the image forming apparatus 10. Further, the control unit 45 is connected to an image reading device 11, an image forming unit 12, a display unit 41, an operation unit 42, a touch panel 43, a storage unit 44, and the like. The control unit 46 controls these components and transmits / receives signals or data to / from each component.

The control unit 46 serves as a processing unit that executes various processes. For example, the control unit 46 has a function of controlling the display unit 41.

In the image forming apparatus 10 having such a configuration, for example, when the user sets the document G on the second platen glass 32 of the image reading apparatus 11 and operates the start key of the operation unit 42, the control unit 46 causes the control unit 46 to operate. Based on the operation, the first mode setting instruction is received, the image forming apparatus 10 is set to the first mode based on the detection of the document G by the first sensor 51, and the image of the document G is read by the reading unit 30. The image data showing the image of the document G is temporarily stored in the image memory 47, the image data is input to the image forming unit 12, and the image of the document G is formed on the recording paper by the image forming unit 12.

The jam detection unit 48 includes a plurality of jam detection sensors provided at different positions in the transport path 24 of the document G. For example, the jam detection sensor is an optical sensor that detects the presence or absence of the document G in the transport path 24. When the jam detection sensor continues a signal indicating that there is a document for a certain period of time or longer, the control unit 46 determines that a jam (paper jam) has occurred at the position where the jam detection sensor is arranged. When the jam detection sensor does not continue the signal indicating that there is a document for a certain period of time or longer, the control unit 46 does not cause a jam (paper jam) at the position where the jam detection sensor is arranged, that is, the jam is cleared. Judge that you are doing.

Further, when the user sets a plurality of documents G in the document tray 21 of the image reading device 11 and operates the start key of the operation unit 42, the control unit 46 receives the second mode setting instruction based on the operation. The image forming apparatus 10 is set to the second mode based on the detection of the document G by the second sensor 52, and each document G on the document tray 21 is sequentially pulled out by the document transport unit 20 and transported through the transport path 24 for transport. The image of the original manuscript G inside is sequentially read by the reading unit 30, the image data indicating the image of each original manuscript G is temporarily stored in the image memory 47, and each image data is sequentially input to the image forming unit 12, and each manuscript is sequentially read. The image of G is formed on each recording paper by the image forming unit 12.

Here, in the second mode, if a jam occurs in the transport path 24 or the like during the transport of the document G, the pulling out or transport of the document G by the document transport unit 20 is temporarily stopped. The user takes out the document G stuck in the transport path 24 or the like, and sets the document G together with the unread document G in the document tray 21 again. After that, the drawing and transporting of the document G by the document transporting unit 20 is resumed, the images of the document G being transported are sequentially read by the scanning unit 30, and the transporting and scanning of the document G is continued. However, if the user sets the read original G in the original tray 21 again or does not set the unread original in the original tray 21, excess or deficiency of the original G occurs.

Therefore, in the present embodiment, when the user sets a plurality of documents G in the document tray 21, he / she operates the numeric keypad of the operation unit 42 or the like to input the total number Q of each document G. The control unit 46 receives the total number of input sheets. The control unit 46 counts the first number N1 of the documents G read by the reading unit 30 from the start of conveying the document G by the document conveying unit 20 to the occurrence of the jam, and the jam is eliminated, and the document conveying unit 20 When the transfer of the document G is resumed, the second number N2 of the document G read by the reading unit 30 is counted from this restart to the end of reading the document G, and the first sheet N1 and the second sheet N2 are counted. The shortage of the manuscript G read by the reading unit 30 is calculated based on the sum and the total number of sheets Q of the manuscript G, the page order of the manuscript G corresponding to the shortage is determined, and the determined page order is displayed in the display unit. Display on 41.

The user looks at the page order of the document G for the insufficient number of sheets displayed on the display unit 41, sets the document G in the page order again in the document tray 21, and operates the start key of the operation unit 42. The control unit 46 conveys the document G in the page order by the document transfer unit 20, causes the reading unit 30 to read the image of the document G in the page order, and stores the image in the image memory 47. This eliminates the shortage of images in the original.

Alternatively, the control unit 46 calculates the excess number of documents G read by the reading unit 30 based on the sum of the first number N1 and the second number N2 and the total number Q of the documents G, and the documents corresponding to this excess number. The page order of the above is determined, and the images in the determined page order stored in the image memory 47 are deleted and canceled. As a result, the excess of the image of the original is eliminated.

Next, as described above, the page order of the manuscript G for the insufficient number of sheets is determined, the determined page order is displayed on the display unit 41, the page order of the manuscript for the excess number of sheets is determined, and the image. A process for erasing and canceling the determined page order images stored in the memory 47 will be described with reference to the flowchart shown in FIG.

Before the start of reading each document G by the image reading device 11 in the second mode, the user operates the numeric keypad of the operation unit 42 to input the total number Q of each document G, and sets each document G in the document tray. It is placed on the 21 and the start key of the operation unit 42 is operated.

The control unit 46 receives the setting instruction of the second mode based on the start key operation, sets the second mode according to the detection of the document G on the document tray 21 by the second sensor 52 (S101), and further inputs the above. The total number Q of each original document G is received and set (S102). Subsequently, the control unit 46 sequentially pulls out each document G on the document tray 21 by the document transfer unit 20 and conveys it through the transfer path 24, and sequentially reads the image of the document G being conveyed by the reading unit 30. A series of processes of temporarily storing the image data indicating the image of each document G in the image memory 47 is started (S103).

When the image reading device 11 reads each document G in the second mode, the control unit 46 counts the number n of the documents G read by the image reading device 11 (S104). Further, the control unit 46 determines whether or not a jam has occurred based on the signals output by each jam detection sensor of the jam detection unit 48 arranged along the transport path 24 of the reading unit 30 (S105). ), Based on the detection output of the second sensor 52, it is determined whether or not the document G on the document tray 21 has disappeared (S106).

In counting the number n of the documents G read by the image reading device 11, the control unit 46 detects the edge of the rear end of the document G based on the image data showing the image of the document G, for example, and the edge of the rear end is detected. This is performed by counting up the number of sheets n each time. Alternatively, a sensor for detecting the document G is provided near the paper ejection roller 27 in front of the document ejection tray 28, and the control unit 46 detects the passage of the rear end of the document G based on the detection output of this sensor. Therefore, the number of sheets n may be counted up each time the passage of the rear end is detected.

Here, when the control unit 46 does not determine the occurrence of jam (S105 “No”) and determines the presence / absence of the document G on the document tray 21 based on the detection output of the second sensor 52 (S106 “No”). ), S103 to S106 are repeated.

Further, when the control unit 46 does not determine the occurrence of jam (S105 “No”) and determines the absence of the document G on the document tray 21 based on the detection output of the second sensor 52 (S106 “Yes”), That is, when the reading of each document G on the document tray 21 is normally completed, the process shown in FIG. 5 is completed. In this case, the control unit 46 sequentially reads the images of the original documents G from the image memory 47, and causes the image forming unit 12 to record the images of the original documents G on the respective recording papers.

When the control unit 46 determines that a jam has occurred (S106 “Yes”), the control unit 46 stops the document transport unit 20 and displays a message notifying the occurrence of the jam and guidance indicating the procedure for resolving the jam. Is displayed (S107). Then, the control unit 46 sets the number n of the documents G counted in S104 as the first number N1 of the documents G read by the reading unit 30 before the jam occurs (S108).

After that, the control unit 46 determines whether or not the jam has been eliminated based on the detection output of each sensor arranged along the transport path 24 of the reading unit 30 (S109), and prevents the jam from being eliminated. Wait (S109 "No").

The user takes out the document G stuck in the transport path 24 or the like, eliminates the jam, and places the document G on the unread document G so that the reading unit 30 first reads each document. It is assumed that the order of G is arranged and each document G is set in the document tray 21 again. Then, the user operates the start key of the operation unit 42 again.

When the control unit 46 determines that the jam has been resolved (S109 “Yes”), the start key of the operation unit 42 is operated again to receive a document reading instruction based on the operation, and the document transport unit 20 receives a document reading instruction. Each document G on the 21 is sequentially pulled out and conveyed through the transport path 24, the image of the document G being conveyed is sequentially read by the reading unit 30, and the image data indicating the image of each document G is temporarily stored in the image memory 47. A series of processing of storing is restarted (S110).

The control unit 46 counts the number m of the document G read by the image reading device 11 after the jam is cleared (S111), and determines whether the document G on the document tray 21 has disappeared based on the detection output of the second sensor 52. (S112 "). When the control unit 46 determines the presence or absence of the document G on the document tray 21 (S112 “No”), S110 and S111 are repeated.

On the other hand, when the control unit 46 determines the absence of the document G on the document tray 21 based on the detection output of the second sensor 52 (S112 “Yes”), that is, the reading of each document G on the document tray 21 is completed. When this happens, the document reading operation by the image reading device 11 is stopped (S113). Then, the control unit 46 sets the number m of the document G counted in S111 as the second number N2 read by the reading unit 30 from the time when the reading of the document G is restarted to the time when the reading of the document G is completed (S114).

Subsequently, the control unit 46 subtracts the sum (N1 + N2) of the first number N1 and the second number N2 from the total number Q of the document G, and this difference (Q− (N1 + N2)) is 0, a negative value, and If it is determined which of the positive values is (S115) and the difference is 0 (“0” in S115), the reading of all the document G has been completed normally. Therefore, the process shown in FIG. Is finished. After that, the control unit 46 sequentially reads out the images of each document G from the image memory 47, and causes the image forming unit 12 to record the images of each document G on the respective recording papers.

Further, if the difference (Q− (N1 + N2)) is a positive value (S115 “positive”), the control unit 46 sets the difference as the shortage number J of the document G (S116), and the shortage number J The page order of the document G for the minute is determined, and the determined page order is displayed on the display unit 41 (S117). For example, as shown in FIG. 6A, when the total number of sheets Q of the document G is 12, the first number of sheets N1 is 5, the second number of sheets N2 is 5, and the insufficient number of sheets J is 2, the control unit 46 is the amount of the shortage number J from the page order (6th page) that is reversed by the sum of the second number N2 and the shortage number J (page 7) from the last page order (page 12) of the total number Q. The page order up to the page order (7th page) that has been advanced is determined and displayed as the page order for the shortage number J. Alternatively, as shown in FIG. 6B, the control unit 46 has a shortage number J from the page order (6th page) following the page order (5th page) in which the first page number N1 is advanced from the first page order. The page order (7th page) that has been further advanced by the amount of the number of sheets J is determined and displayed as the page order of the insufficient number of sheets J.

The user sees the page order of the document G for the shortage number J displayed on the display unit 41, sets the document G in the page order again in the document tray 21, and operates the start key of the operation unit 42. .. The control unit 46 receives a document reading instruction based on the operation, conveys the document G in the page order by the document transport unit 20, causes the scanning unit 30 to read the image of the document G in the page order, and causes the image memory. It is stored in 47 (S118). At this time, the control unit 46 inserts the image of the document G in the page order between the image of each document G read just before the occurrence of the jam and the image of each document G read after the jam is cleared. The page order of all the originals G in the image memory 47 is set as described above. Then, the control unit 46 sequentially reads out the images of each document G from the image memory 47, and causes the image forming unit 12 to record the images of each document G on the respective recording papers. This eliminates the shortage of images in the original.

If the difference (Q− (N1 + N2)) is a negative value (S115 “negative”), the control unit 46 sets the difference (absolute value of the difference) as the excess number K of the document G (S119). The page order of the originals corresponding to the excess number K is determined, and the images in the page order stored in the image memory 47 are erased and canceled (S120). For example, as shown in FIG. 7A, when the total number Q of the document G is 12, the first number N1 is 7, the second number N2 is 7, and the excess number K is 2, the total number is 2. From the last page order of Q (12th page) to the page order (6 pages) that is retrograde by the second number N2 to the page order (7 pages) that is forward by the excess number K, the excess number K Judging as the page order of minutes, the images in this page order are deleted from the images of each manuscript G of the second sheet N2 and canceled. Alternatively, as shown in FIG. 7B, the page order (6th page) following the page order (5th page) in which the first number N1 is advanced is further advanced by the excess number K (page order). Up to the 7th page) is determined as the page order for the excess number of sheets K, and the images in this page order are deleted from the images of each manuscript G of the first number of sheets N1 and canceled. Then, the control unit 46 sequentially reads out the images of each document G from the image memory 47, and causes the image forming unit 12 to record the images of each document G on the respective recording papers. As a result, the excess of the image of the original is eliminated.

Further, when the jam occurs repeatedly, that is, when the second jam occurs while repeating S110 to S112, the control unit 46 interrupts the processing after S110, and when the jam is resolved, the document G Resume reading of the image. Then, when the control unit 46 determines that there is no document G on the document tray 21 based on the detection output of the second sensor 52, the image reading device 11 is stopped, and the image of each document G is imaged by the image forming unit 12. After forming the recording paper, a message prompting confirmation of the pages of each recording paper is displayed on the display unit 41.

As described above, in the present embodiment, the total number Q of the documents G is input by the operation of the operation unit 42, and the first of the documents G read by the reading unit 30 until the jam occurs and the transport of the documents G is stopped. One sheet N1 is counted, and the second sheet N2 of the document G read by the reading unit 30 after the transfer of the document G is restarted is counted, and the sum of the first sheet N1 and the second sheet N2 and the document G are counted. Based on the total number of sheets Q, the shortage number J of the document G read by the reading unit 30 is calculated, the page order of the document G for the shortage number J is determined, and the determined page order is displayed on the display unit 41. Or, the excess number K of the document G read by the reading unit 30 is calculated based on the sum of the first number N1 and the second number N2 and the total number Q of the document G, and the excess number K of the document is calculated. The page order is determined, and the images in the determined page order stored in the image memory 47 are deleted and canceled. Thereby, the work for compensating for the excess or deficiency of the scanned document G can be appropriately supported. Further, in performing each process shown in FIG. 5, it is not necessary to display the image in detail such as a preview of the original content on the display unit 41, and if the page order of the original G for the insufficient number J can be displayed. Since it is sufficient, the display unit 41 is not required to have a high resolution or a large screen capable of clearly displaying an image.

In the above embodiment, the images of all the manuscripts G are stored in the image memory 47, and then the images of all the manuscripts G are formed on the respective recording papers by the image forming unit 12, but the control unit 46 Each time the image of the document G is read by the scanning unit 30, the image of the document G may be formed on the recording paper by the image forming unit 12, and if a jam occurs, the insufficient number J or the excess number K may be formed. The page order of the minute manuscript G is determined and displayed on the display unit 41. The user looks at the page order of the manuscript G for the shortage number J, and forms the image of each manuscript G read just before the occurrence of the jam on the recording paper on which the image of the manuscript G in this page order is formed. It is inserted between each recording paper on which the image of each original document G read after the jam is cleared is formed. Alternatively, the user looks at the page order of the original G for the excess number K, and selects the recording paper on which the image of the original G in this page order is formed from each recording paper on which the images of all the original G are formed. Pull out. This also makes up for the excess or deficiency of the scanned document G.

Further, in the above embodiment, when the shortage number J of the manuscript G occurs, the control unit 46 uses the last page order or the first page order of the total number Q of the manuscript G as a reference for the shortage number J. The page order of the original manuscript G is determined and displayed, but the page order of the insufficient number J is determined based on the first original manuscript G among the original manuscripts G whose transport has been stopped due to jam. It may be displayed. For example, in the vicinity of the paper feed roller 22 of the document transport unit 20, a further sensor for detecting the document G drawn from the document tray 21 by the paper feed roller 22 is provided. If the original G is detected by the sensor when the paper feed roller 22 is stopped by the jam, the control unit 46 starts with the original G, and if the original G is not detected by the sensor, the control unit 46 starts the document G. The original document G immediately after passing through the sensor is set as the first page, and the first original document G is set as the first page, and the page order of the insufficient number J from the first original document G is determined and displayed. In this case, for example, in FIGS. 6A and 6B, the manuscript G on the 6th page and the manuscript G on the 7th page are determined to be the 1st and 2nd pages of the shortage number J and displayed. NS.

Further, a sensor (for example, CIS; Contact Image Sensor) for detecting the size of the document G pulled out from the document tray 21 by the paper feed roller 22 is provided in the vicinity of the paper feed roller 22 of the document transport unit 20, and the size changes. The page order of the shortage number J from the original document G may be determined and displayed. The control unit 46 determines the size of the document G based on the detection output of the sensor, and if the size of the document G changes, the document G whose size has changed is set as the first page, and the page 1 of the document G is set. The page order for the shortage number J, which is forward or backward from the eyes, is determined and displayed.

Further, in the above embodiment, before scanning the document in S103, the control unit 46 receives and sets the total number Q of each document G input to the operation unit 42 by the user (S102), but instead of this, the control unit 46 sets. It is assumed that the control unit 46 starts the document reading of S103 without inputting and setting the total number Q of each document G, and the control unit 46 is after the reading of each document G is completed in S113 (S113). ), S115, based on the operation of the operation unit 42 by the user, the input of the total number Q of each manuscript G assumed by the user is accepted, and the total number Q of each input manuscript G is set. You may try to do it.

Further, instead of the above S102, the control unit 46 is the total number of sheets to be read, which is the total of the first number N1 and the second number N2 of the document G whose reading is completed at this point after S113 and before S115. Q'is calculated, the total number of reads Q'is displayed on the display unit 41, and based on the operation of the operation unit 42 by the user after the display, (i) input of an instruction to maintain the total number of reads Q'is input. Accept and set the total number of reads Q'to the total number of reads Q used in S115. (Ii) Accept the input of another total number that the user himself expected, and use the other total number in S115. Set to the total number of reads Q, or (iii) accept the input of a numerical value for increasing or decreasing the total number of reads Q', and set the total number of reads Q'after the increase or decrease to the total number of reads Q used in S115. You may do so. All of the above (i)-(iii) indicate that the total number of documents is input by the operation unit 42 based on the operation by the user.

Further, in the above embodiment, the multifunction device is exemplified as an embodiment of the image forming apparatus of the present invention, but this is only an example, and a copier, a facsimile apparatus, or the like may be used.

Further, the configurations of the above-described embodiments and modifications described with reference to FIGS. 1 to 7 are merely examples of the present invention, and the present invention is not intended to be limited to the configurations.

10 Image forming device 11 Image reading device 12 Image forming unit 20 Document conveying unit 30 Reading unit 41 Display unit 42 Operation unit 43 Touch panel 44 Storage unit 47 Image memory 45 Control unit 46 Control unit

Claims (10)

Display and
A document transfer unit that sequentially transports multiple documents through the transfer path,
A reading unit that reads an image of a document conveyed through the transfer path, and a reading unit.
An operation unit operated by the user to input the total number of documents to be read by the reading unit, and an operation unit.
A jam detection unit that detects jam during document transportation by the document transfer unit, and a jam detection unit.
A control unit for transporting a document to the document transport unit and causing the scanning unit to read the transported document is provided.
The control unit
The first number of documents read by the scanning unit is counted from the start of transporting the documents by the document transporting unit.
If a jam is detected by the jam detection unit during the transfer of the document by the document transfer unit, the document transfer unit is stopped, and if the jam is no longer detected by the jam detection unit, the document transfer by the document transfer unit is performed. It is restarted, and after the restart, the second number of documents read by the reading unit is counted.
Based on the sum of the first number of sheets and the second number of sheets and the total number of the originals, the shortage of the originals read by the reading unit is calculated.
An image reading device that determines the page order of the originals for the insufficient number of sheets based on the total number of sheets, the insufficient number of sheets, the first number of sheets, or the second number of sheets, and displays the determined page order on the display unit. .. The control unit determines the number of insufficient sheets from the last page order of the total number of sheets to the page order that is retrograde by the sum of the second number of sheets and the insufficient number of sheets to the page order that is forwarded by the amount of the insufficient number of sheets. The image forming apparatus according to claim 1, wherein the image forming apparatus is determined as a page order of minutes. The control unit sets the page order for the shortage number from the next page order for the first page order to the page order for the shortage number. The image forming apparatus according to claim 1. The control unit sets the first document of each document whose transfer by the document transfer unit is stopped as the first page, and causes the display unit to display the page order for the insufficient number of sheets from the first document. The image forming apparatus according to claim 1. Further provided with a size detecting unit for detecting the size of the original material conveyed by the document conveying unit.
The control unit sets the manuscript in which the size of the manuscript detected by the size detection unit has changed as the first page, and causes the display unit to display the page order for the insufficient number of sheets from the first page of the manuscript. The image forming apparatus according to claim 1. The control unit calculates the excess number of documents read by the reading unit based on the sum of the first number of sheets and the second number of sheets and the total number of documents, and the total number of sheets, the excess number of sheets, and the first number of documents. The image forming apparatus according to claim 1, wherein the page order of the originals for the excess number of sheets is determined based on the number of sheets or the second number of sheets, and the images of the originals in the determined page order are canceled. The control unit calculates the excess number of documents read by the reading unit based on the sum of the first number of sheets and the second number of sheets and the total number of documents, and the total number of sheets, the excess number of sheets, and the first number of documents. The image forming apparatus according to claim 1, wherein the page order of the originals for the excess number of sheets is determined based on the number of sheets or the second number of sheets, and the determined page order is displayed on the display unit. The control unit determines the page order from the last page order of the total number of sheets to the page order retrograde by the second number of sheets to the page order of the excess number of sheets as the page order of the excess number of sheets. The image forming apparatus according to claim 7. 7. The control unit determines from the next page order of the page order in which the first number of sheets has been advanced to the page order in which the page order has been further advanced by the excess number of sheets as the page order of the excess number of sheets. The image forming apparatus according to. The image reading device according to any one of claims 1 to 9.
An image forming apparatus including an image forming unit for recording an image read by the image reading apparatus on a recording paper.

Images