JP2022014257A - Image reading device and image forming apparatus - Google Patents

Abstract

To obtain a reading result in page order desired by a user even when paper jam occurs in a document feeding unit and the user makes an error in a method for placing a document that has caused clogging during re-reading.SOLUTION: An image forming apparatus 1 comprises: a document reading unit 5 that reads an image of a document fed by a document feeding unit 6; a paper jam detection unit 101 that detects the occurrence of paper jam in the document feeding unit 6; a determination unit 102 that, after the occurrence of paper jam is detected by the paper jam detection unit 101, when reading of the document performed by the document reading unit 5 is resumed, compares a document image (comparison image) read by the document reading unit 5 immediately before the occurrence of paper jam with a document image read after the resumption of reading, and determines if a document image having identity with the comparison image is read; and a control unit 100 that, when the determination unit 102 determines that the document image having identity with the comparison image is read, changes the order of the document images in accordance with a predetermined rule.SELECTED DRAWING: Figure 1

Description

The present invention relates to an image reading device for feeding and reading placed originals one by one, and an image forming device including the same.

An image reading device including a document feeding unit that feeds the placed documents one by one and a document reading unit that reads an image of the document supplied by the document feeding unit is known. When a jam (paper jam) occurs in the document feeding section of this image reading device, the user needs to re-place the jammed document (that is, the document whose scanning has not been completed) in the document feeding section. The following Patent Documents 1 and 2 describe an image forming apparatus as an example of such an image reading apparatus.

Japanese Unexamined Patent Publication No. 09-236950 Japanese Unexamined Patent Publication No. 2010-136185

For example, some image readers can read not only one side of a document but also both sides. Therefore, it is conceivable that jam will occur after the reading of the front side image of the original is completed and before the reading of the back side image is completed.

When a jam occurs at such a timing, the user reads a jammed document (that is, a document that has been read for the front side image but not for the back side image) of each image reader. According to the specifications, it is necessary to properly re-place it in the document feeder.

However, if the jammed manuscript is not properly relocated, the output result desired by the user may not be obtained. For example, if the user makes a mistake on the front and back of the manuscript or puts the manuscript in the wrong order, the manuscript images cannot be read in the order desired by the user. For example, when performing aggregate printing such as 2in1 or 4in1, it is a problem that the original images cannot be read in the order desired by the user. This problem may occur not only in the case of double-sided reading but also in the case of single-sided reading.

In the above-mentioned Patent Document 1, when the copying operation is restarted after the jam occurs in the document feeding unit, if the document having the same characteristics as the already printed document is read, the copy of the document is not performed. The present invention describes an invention for preventing duplicate extra copying. However, the above invention does not adjust the page order of the scanned manuscript image.

The above-mentioned Patent Document 2 describes that a preview display of a manuscript image obtained by scanning by a manuscript reading unit is performed to provide a user with an opportunity to confirm the output result in advance, but the user places the manuscript. Unless the mistake is accurately grasped and corrected, the reading result in the page order desired by the user cannot be obtained.

The present invention has been made in view of the above circumstances, and even if the user makes a mistake in the method of placing the jammed document at the time of re-reading when a jam occurs in the document feeding unit, the page desired by the user is used. The purpose is to obtain reading results in order.

The image reading device according to one aspect of the present invention includes a document feeding unit that feeds the placed documents one by one, a document reading unit that reads an image of the document fed by the document feeding unit, and a document reading unit. A storage unit that stores the original image obtained by reading by the document reading unit, a control unit that stores the original image obtained by reading by the document reading unit in the storage unit in the order of reading, and the document. When the detection unit that detects the occurrence of jam in the feeding unit and the detection unit detect the occurrence of jam and then restart the reading of the document by the document reading unit, the document reading before the jam occurs. The comparative image, which is the last original image obtained by scanning by the unit, is compared with the original image obtained by scanning by the original scanning unit after the scanning is restarted, and the comparative image has a predetermined identity. A determination unit for determining whether or not the original image has been read is provided, and the control unit is predetermined when it is determined by the determination unit that the original image having the same identity as the comparative image has been read. According to the rules, the order of the original images obtained by scanning by the original reading unit is changed.

Further, the image reading device according to one aspect of the present invention includes a document feeding unit that feeds the placed documents one by one, and a document reading unit that reads an image of the document fed by the document feeding unit. A storage unit that stores the original image obtained by reading by the document reading unit, and a control unit that stores the original image obtained by reading by the document reading unit in the storage unit in the order of reading. When the detection unit that detects the occurrence of jam in the document feeding unit and the detection unit detect the occurrence of jam and then restart the reading of the document by the document reading unit, the said before the jam occurs. The original image as a comparative image finally obtained by scanning by the original scanning unit is compared with the original image obtained by scanning by the original scanning unit after resumption of scanning, and the comparative image and a predetermined identity are compared. The control unit includes a determination unit for determining whether or not the original image having the above is read, and when the determination unit determines that the original image having the same identity as the comparative image has been read, the control unit has the sameness. One of the original image and the comparative image having the above is deleted and stored in the storage unit.

Further, the image forming apparatus according to one aspect of the present invention includes the image reading device and an image forming unit for forming an image on a recording medium, and the control unit stores a manuscript image stored in the storage unit. , The image is formed by the image forming unit according to the above order.

According to the present invention, when the original image having the same identity as the comparative image is read (that is, it is recognized that the original image obtained by reading by the original reading unit at the end before the jam occurs is read again), the original. The order of the original images after scanning is changed, or one of the original images obtained by the last scanning before the occurrence of jam or the original image having the same identity is deleted. As a result, when a jam occurs in the document feeding unit, even if the user makes a mistake in the method of placing the jammed document, it is possible to obtain the reading result in the page order desired by the user.

It is a functional block diagram which shows schematic the main internal structure of the image forming apparatus which concerns on one Embodiment of the image reading apparatus which concerns on this invention. It is a perspective view which shows the appearance of an image forming apparatus. (A) to (F) are diagrams for explaining the order of the manuscript images. (A) to (F) are diagrams for explaining the order of the manuscript images. (A) to (F) are diagrams for explaining the order of the manuscript images. (A) to (F) are diagrams for explaining the order of the manuscript images. It is a flowchart which shows an example of the 1st Embodiment of the processing by an image forming apparatus. (A) to (F) are diagrams for explaining the order of the manuscript images. (A) to (F) are diagrams for explaining the order of the manuscript images. (A) to (F) are diagrams for explaining the order of the manuscript images. It is a flowchart which shows an example of the 2nd Embodiment of the processing by an image forming apparatus.

Hereinafter, the image reading device and the image forming device according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram schematically showing a main internal configuration of an image forming apparatus according to an embodiment of the image reading apparatus according to the present invention. FIG. 2 is a perspective view showing the appearance of the image forming apparatus.

The image forming apparatus 1 is a multifunction device having a plurality of functions such as a copy function, a printer function, a scanner function, and a facsimile function. The apparatus main body 11 has a control unit 10, a document feeding unit 6, and a document. It includes a reading unit 5, an image forming unit 12, a fixing unit 13, a paper feeding unit 14, and an operating unit 47.

The document feeding section 6 is configured to be openable and closable on the upper surface of the document reading section 5 by a hinge or the like shown in the figure, and the document feeding section 6 is configured to read the document placed on the platen glass of the figure. Functions as a holding cover. The document feeding unit 6 is an ADF (Auto Document Feeder), includes a document loading tray 61, and feeds the documents mounted on the document loading tray 61 to the document reading unit 5 one by one.

After the document reading unit 5 has read the front side image of the document, the document feeding unit 6 mechanically reverses the front and back of the document and feeds the document to the document reading unit 5 again. Is configured to be possible. As a result, double-sided reading of the original by the original reading unit 5 is realized.

A case where the document reading operation is performed by the image forming apparatus 1 will be described. The document reading unit 5 optically reads the image of the document supplied to the document reading unit 5 by the document feeding unit 6 or the document placed on the platen glass, and generates image data. The image data generated by the document reading unit 5 is stored in an image memory or the like of the illustration.

A case where the image forming operation is performed by the image forming apparatus 1 will be described. The image forming unit 12 feeds paper from the paper feeding unit 14 based on the image data generated by the document reading operation, the image data stored in the image memory or the like, the image data received from the computer connected to the network, and the like. A toner image is formed on a recording paper as a recording medium.

The fixing unit 13 heats and pressurizes the recording paper on which the toner image is formed by the image forming unit 12 to fix the toner image on the recording paper. It is discharged. The paper feed unit 14 includes a plurality of paper feed cassettes 141.

The operation unit 47 receives instructions such as an image formation operation execution instruction from the operator regarding various operations and processes that can be executed by the image forming apparatus 1. The operation unit 47 includes a display unit 473 that displays operation guidance and the like to the operator. Further, the operation unit 47 receives an input of an instruction from the user based on an operation (touch operation) by the user on the operation screen displayed on the display unit 473 via the touch panel of the display unit 473.

The display unit 473 is composed of an LCD (Liquid Crystal Display) or the like. The display unit 473 is provided with a touch panel. When the operator touches a button or key displayed on the screen, the touch panel accepts an instruction associated with the touched position.

The storage unit 31 is a non-volatile memory or a storage device such as an HDD. Under the control of the control unit 100, the document images obtained by scanning by the document scanning unit 5 are stored in the order in which they are scanned.

The jam detection sensor 32 is a sensor that detects a document in the document transport path of the document reading unit 5. The jam detection sensor 32 is provided at a plurality of different positions in the transport path. The jam detection sensor 32 is, for example, an optical sensor that detects the presence or absence of the document G in the transport path 24.

The control unit 10 includes a processor, a RAM (Random Access Memory), a ROM (Read Only Memory), and a dedicated hardware circuit. 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 10 includes a control unit 100, a jam detection unit 101, and a determination unit 102.

The control unit 10 is operated by the processor according to a control program stored in an HDD (Hard Disk Drive) or SSD (Solid State Drive) (not shown), thereby causing a control unit 100, a jam detection unit 101, and a determination unit. It functions as 102. However, the control unit 100 and the like can be configured by hardware circuits, regardless of the operation according to the control program by the control unit 10. Hereinafter, the same applies to each embodiment unless otherwise specified.

The control unit 100 controls the overall operation of the image forming apparatus 1. The control unit 100 is connected to a document feeding unit 6, a document reading unit 5, an image forming unit 12, a fixing unit 13, a paper feeding unit 14, and an operation unit 47, and performs drive control and the like of each of these units. For example, the control unit 100 outputs the document images obtained by scanning by the document scanning unit 5 in the order in which they are scanned. For example, the control unit 100 controls the operation of the image forming unit 12 and the like, and stores the original image obtained by reading by the document reading unit 5 in the storage unit 31 in the order of reading. That is, the control unit 100 stores the original image of each original obtained by continuous reading by the original reading unit 5 in the storage unit 31 as one file in the order of reading. Further, the control unit 100 causes the image forming unit 12 to form the original image stored in the storage unit 31 on the recording paper as a recording medium.

The jam detection unit 101 detects the occurrence of jam (paper jam of the document) in the document feeding unit 6. The jam detection unit 101 determines that a jam (paper jam) has occurred at the arrangement position of the jam detection sensor 32 when the signal indicating the presence of a document output from the jam detection sensor 32 continues for a certain period of time or longer. to decide. When the jam detection sensor 32 does not continue the signal indicating that the document is present for a certain period of time or longer, the jam detection unit 101 does not cause a jam (paper jam) at the arrangement position of the jam detection sensor 32, that is, Judge that the jam has been resolved.

Alternatively, the document feeding unit 6 is provided with various rollers (not shown) for feeding the document to the document reading unit 5, and the jam detection sensor 32 monitors the rotation speed of the various rollers instead of the above configuration. It may be provided with a monitoring sensor of the illustration. In this case, the jam detection unit 101 detects a paper jam in the document based on the information obtained from the monitoring sensor. For example, if the jam detection unit 101 determines that the roller is stopped when the roller should be rotating, it detects that the document is jammed (jam) and the roller should be rotating. Occasionally, if it is determined that the rollers are rotating, it is detected that the document is not jammed.

The jam detection unit 101 and the jam detection sensor 32 are examples of detection units within the scope of the claims. Further, the jam detection unit 101 and the monitoring sensor are also examples of the detection unit within the scope of the claims.

The determination unit 102 was obtained by the last reading by the document reading unit 5 before the jam occurred when the occurrence of the jam was detected by the jam detecting unit 101 and then the reading of the document by the document reading unit 5 was restarted. By comparing the original image (hereinafter, also referred to as "comparative image") with the original image obtained by scanning by the original reading unit 5 after resuming scanning, it is determined whether or not the original image having the same identity as the comparative image is read. judge. For example, the determination unit 102 calculates the match rate between the two, and determines that the two have the same identity when the match rate is equal to or higher than a predetermined threshold value.

When the control unit 100 further determines that the original image having the same identity as the comparative image has been read by the determination unit 102, the control unit 100 further obtains each original image obtained by reading by the original reading unit 5 according to a predetermined rule. , The order of each original image stored in the storage unit 31 is changed. Further, the control unit 100 deletes one of the comparison image (the original image obtained by the last reading by the document reading unit 5 before the jam occurs) or the original image having the same identity as the comparison image.

Further, if the jam detection unit 101 detects the occurrence of jam after the reading of the front side image of the original is completed and before the reading of the back side image of the original is completed, the control unit 100 causes the jam to occur. The back side image of the original document immediately before the original document is displayed as a preview on the display unit 473.

Next, the above-mentioned predetermined rule used for changing the order (page order) of the manuscript images stored in the storage unit 31 will be described.

<Predetermined rule 1>

Condition 1: Both sides of the original are read by the original reading unit 5. The control unit 100 stores the original images obtained by reading by the original reading unit 5 in the storage unit 31 in the order of reading.

Condition 2: The occurrence of jam is detected by the jam detection unit 101 after the reading of the front side image of the original is completed and before the reading of the back side image of the original is completed.

Condition 3: After the occurrence of jam is detected, the reading of the original by the original reading unit 5 is restarted, and it is determined by the determination unit 102 that the original image having the same identity as the comparative image has been read.

Condition 4: The original image determined by the determination unit 102 to have the same identity as the comparative image is the back side image of the original.

Content of change in order: When all of the above conditions 1 to 4 are satisfied, the control unit 100 deletes one of the determined back surface image or the comparison image, and after restarting, the document is read by the document reading unit 5. The above order is changed by using the front side image of the above as the back image of the manuscript. The control unit 100 stores each manuscript image whose order has been changed in the storage unit 31 as one file with the order as the page order.

<Predetermined rule 2>

Details of change in order: When all of the above conditions 1 to 3 are satisfied, the control unit 100 uses the original image determined by the determination unit 102 to have the same identity as the comparative image, and the original image in the same order as the comparative image. The above order of the symmetrical images having a front-back relationship with the original image is changed to the back surface of the original image, and the comparative image or the original image (the original image having the same order as the comparative image) is changed. Delete one.

Next, using FIGS. 3 to 6, the order in which the original images are output will be described by taking as an example the case where double-sided scanning of four originals is executed. As shown in FIG. 3A and the like, after the reading of the front side image "C" of the second original is completed and before the reading of the back side image "D" of the second original is completed. , The case where the occurrence of jam is detected by the jam detection unit 101 will be described.

As shown in FIG. 3B and the like, the comparative image used for the determination by the determination unit 102 by the control unit 100 is the original image obtained by the last reading by the document reading unit 5 before the jam occurs. Second, it is set to the front side image "C" of the second original.

As shown in FIG. 3C and the like, the original image preview-displayed on the display unit 473 of the control unit 100 is a back surface image of the original immediately before the original that caused the jam, and is the first image. Set to the back side image "B" of the original. As a result, the user knows that the reading up to the first document has been completed, and recognizes that it is the second and subsequent documents that need to be placed in the document feeding unit 6. It will be possible.

As shown in FIG. 3D, it is assumed that the second original that caused the jam is placed on the original feeding unit 6 by the user with the wrong front and back, and the reading of the original is resumed. .. In this case, the reading order of the original images is in the order of "A-> B-> C-> D-> C-> E-> F-> G-> H" as shown in FIG. 3 (E).

Since the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparative image "C" is the back surface image of the original, the control unit 100 controls the original image "C" according to the above <Rule 1>. , And the front image "D", which has a front-back relationship with the manuscript image "C", are exchanged in order. Here, the control unit 100 excludes the front side image "C" of the second original as a comparative image from the output target. This is to prevent duplicate output of the original image "C". The control unit 100 stores each manuscript image whose order has been changed in the storage unit 31 as one file in which the order is in page order.

Since the comparative image "C" is excluded from the output target in this way, the control unit 100 changes the order of the original images to "A-> B-> C-> D-> E->" as shown in FIG. 3 (F). The order is F → G → H ”. That is, as shown in FIG. 3A, the order of the manuscript images is the order of the front and back surfaces in which the manuscript is first placed on the manuscript feeding unit 6. As a result, for example, even when performing aggregation such as 2in1 or 4in1, the order is as desired by the user.

Next, as shown in FIG. 4 (D), the second manuscript that caused the jam is placed in the manuscript feeding unit 6 in the wrong order, and the manuscript is read. The case where it is restarted will be described. As shown in FIG. 4 (E), the reading order of the original images is in the order of "A-> B-> C-> E-> F-> G-> H-> C-> D".

In this case, the control unit 100 changes the order of the original image "C" (indicated by the diagonal line hatch in the figure) to the same order as the comparative image "C" according to the above <Rule 2>. The order of the symmetrical images "D" having a front-back relationship with the manuscript image "C" is the order in which the back side of the manuscript image "C" is formed. Here, the control unit 100 excludes the front side image “C” of the second original as a comparative image from the output target.

Since the comparative image "C" is excluded from the output target, the control unit 100 determines the order of the original images as "A-> B-> C-> D-> E-> F-> G" as shown in FIG. 4 (F). → H ”. That is, as shown in FIG. 4A, the order of the manuscript images is the order of the front and back sides in which the manuscript is first placed on the manuscript feeding unit 6. The control unit 100 stores each manuscript image whose order has been changed in the storage unit 31 as one file in which the order is in page order.

Next, as shown in FIG. 5 (D), the second manuscript that caused the jam is placed on the manuscript feeding unit 6 by the user in the wrong front and back and in the wrong order. , The case where the scanning of the original is restarted will be described. In this case, the reading order of the original images is in the order of "A-> B-> C-> E-> F-> G-> H-> D-> C" as shown in FIG. 5 (E). In this case, the control unit 100 applies both the above <Rule 1> and the above <Rule 2>.

Since the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparative image "C" is the back surface image of the original, the control unit 100 controls the original image "C" according to the above <Rule 1>. , And the front image "D", which has a front-back relationship with the manuscript image "C", are exchanged in order.

Subsequently, according to the above <Rule 2>, the control unit 100 changes the order of the original image "C" (indicated by the diagonal line hatch in the figure) to the same as the comparison image "C" to the same order as the comparison image "C". The order of the symmetrical images "D" having a front-back relationship with the manuscript image "C" is the order in which the back side of the manuscript image "C" is formed. Here, the control unit 100 excludes the front side image “C” of the second original as a comparative image from the output target.

Since the comparative image "C" is excluded from the output target, the control unit 100 displays the order of the original images as "A-> B-> C-> D-> E-> F-> G" as shown in FIG. 5 (F). → H ”. That is, as shown in FIG. 5A, the order of the manuscript images is the order of the front and back sides in which the manuscript is first placed on the manuscript feeding unit 6.

Further, as shown in FIG. 6D, the second manuscript that caused the jam is properly placed on the manuscript feeding unit 6 by the user in the same manner as before the jam occurred, and the manuscript is placed. The case where the reading of is restarted will be described. In this case, the reading order of the original images is the order of "A-> B-> C-> C-> D-> E-> F-> G-> H" as shown in FIG. 6 (E).

Since the comparative image "C" is excluded from the output target, the control unit 100 determines that the order of the original images is "A-> B-> C-> D-> E-> F-> G" as shown in FIG. 6 (F). → H ”. That is, as shown in FIG. 6A, the order of the manuscript images is the order of the front and back surfaces in which the manuscript is first placed on the manuscript feeding unit 6. The control unit 100 stores each manuscript image whose order has been changed in the storage unit 31 as one file in which the order is in page order.

Next, the first embodiment of the processing by the image forming apparatus 1 will be described with reference to the flowchart shown in FIG. In this process, the document scanning unit 5 scans both sides of the document (condition 1 above), and after the scanning of the front side image of the document is completed and before the scanning of the back surface image of the document is completed, the jam detection unit This is a process performed when the occurrence of jam is detected by 101 (condition 2 above) and then the reading of the original by the original reading unit 5 is restarted.

First, the determination unit 102 sets the original image obtained by the last reading by the original reading unit 5 before the jam occurs as the comparison image (S1). Subsequently, the determination unit 102 compares the comparison image with the original image obtained by scanning by the original reading unit 5 after resuming scanning, and determines whether or not the original image having the same identity as the comparative image has been read. (S2).

When the control unit 100 determines that the original image having the same identity as the comparison image has been read by the determination unit 102 (YES in S2: when the condition 3 of the above <Rule 1> is satisfied), the control unit 100 compares the original image. It is determined whether or not the original image determined to have the same identity as the image is the back surface image of the original (S3). On the other hand, when the determination unit 102 determines that the original image having the same identity as the comparison image has not been read by the control unit 100 (NO in S2), the process ends.

When the control unit 100 determines that the original image determined by the determination unit 102 to have the same identity as the comparative image is the back surface image of the original (YES in S3: Condition 4 of the above <Rule 1> is satisfied. (Case), in accordance with the above <Rule 1>, one of the determined back side image or the comparison image is deleted (S4), and the front side image of the manuscript read by the manuscript reading unit 5 after restarting is the back side image of the manuscript. The above order is changed as an image (S5). Here, the control unit 100 excludes the comparison image from the output target. For example, as shown in FIG. 3 or FIG. 5, the order of the original image "C" having the same identity as the comparative image "C" and the front image "D" having a front-back relationship with the original image "C". To replace.

Then, the control unit 100 determines the order of the original image determined to have the same identity as the comparative image by the determination unit 102 and the symmetrical image having a front-back relationship with the original image in accordance with the above <Rule 2>. The order of the original image "C" (indicated by the diagonal line hatch in the figure) that is the same as "C" is the same as that of the comparative image "C", and the symmetrical image "D" that has a front-back relationship with the original image "C". The order of "" is the order of the back side of the manuscript image "C" (S6). After that, this process ends. For example, as shown in FIG. 4 or 5, the order of the original image "C" having the same identity as the comparative image "C" and the symmetrical image "D" having a front-back relationship with the original image "C" is changed. Move to the position immediately after the jam occurs. The control unit 100 stores each manuscript image whose order has been changed in the storage unit 31 as one file in which the order is in page order.

As shown in FIG. 3 or FIG. 6, a manuscript having a manuscript image “C” having the same identity as the comparison image “C” (that is, a manuscript whose front and back images are “C” and “D”) is read. If it is read immediately after restarting, the order does not change even if the order is changed according to the above <Rule 2>.

Therefore, as another embodiment, instead of this, the control unit 100 reads the manuscript in the manuscript image determined by the determination unit 102 to have the same identity as the comparison image immediately after resuming scanning before S6. If it is determined whether or not the original is read and it is determined that the original has been read immediately after resuming scanning, the process of S6 may not be performed.

According to the first embodiment, it is recognized that the original image having the same identity as the comparative image was read (that is, the original image obtained by the last reading by the original reading unit 5 before the jam occurred was read again. ), The order of the original images is changed according to the predetermined rules. As a result, when a jam occurs in the document feeding unit 6, even if the user makes a mistake in the method of placing the jammed document, it is possible to obtain the reading result in the page order desired by the user.

Further, as still another embodiment, the control unit 100 may display the read result after the change on the display unit 473. This provides the user with an opportunity to check the read result after the change before forming the image.

Further, in the first embodiment, the case of double-sided scanning of the original is described as an example, but the order of the original images may be changed also in the case of single-sided scanning. With reference to FIG. 8, the order in which the original images are output will be described by taking as an example the case where single-sided scanning is performed on eight originals. As shown in FIG. 8A, jam is generated by the jam detection unit 101 after the reading of the third original image “C” is completed and before the reading of the fourth original image “D” is completed. Will be described when is detected.

As shown in FIG. 8B, the control unit 100 is a document image obtained by reading the comparison image used for the determination by the determination unit 102 by the document reading unit 5 at the end before the jam occurs. Set to the first original image "C".

As shown in FIG. 8C, the control unit 100 sets the original image previewed on the display unit 473 to the image of the original immediately before the original that caused the jam in the case of single-sided scanning. In this case, the original image displayed in the preview is the third original image "C".

As shown in FIG. 8D, a third manuscript that does not need to be re-placed is mistakenly placed in the manuscript feeding unit 6 by the user, and the order is incorrect, and the third manuscript is placed. If the reading of the original is resumed while the fourth original following the original is also placed in the original feeding unit 6 by the user in the wrong order, the reading order of the original images will be changed. As shown in FIG. 8 (E), the order is "A-> B-> C-> E-> F-> G-> H-> C-> D".

The control unit 100 sets the order of the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparative image "C" to the original image in the same order as the comparative image "C", and the front and back of the original image. The order of the symmetrical images "D" having the relationship of is changed to the order of the back surface of the original image "C". After that, the control unit 100 excludes the comparative image "C" or the original image "C" having the same identity as the comparative image "C" from the output target.

As a result, the order of the original images is "A-> B-> C-> D-> E-> F-> G-> H" as shown in FIG. 8 (F). That is, as shown in FIG. 8A, the order of the manuscript images is in the order in which the manuscript is first placed in the manuscript feeding unit 6. As a result, for example, even when performing aggregation such as 2in1 or 4in1, the order is as desired by the user.

Next, a second embodiment of the processing by the image forming apparatus 1 will be described. In the second embodiment, unlike the first embodiment, the control unit 100 does not change the order of the original images, but determines that the determination unit 102 has read the original image having the same identity as the comparative image. In this case, one of the original image or the comparative image having the same identity is deleted, and in addition to the original image obtained by scanning by the original scanning unit 5 before the jam occurs, by scanning by the original scanning unit 5 after resuming scanning. The obtained manuscript image is stored in the storage unit 31.

Further, the control unit 100 preview-displays the original image (that is, the comparison image) obtained by the last reading by the original reading unit 5 before the jam occurs on the display unit 473.

A second embodiment will be described with reference to FIGS. 9 and 10 by exemplifying a case where double-sided scanning of four originals is executed. As shown in FIG. 9A and the like, after the reading of the front side image "C" of the second original is completed and before the reading of the back side image "D" of the second original is completed. , The case where the occurrence of jam is detected by the jam detection unit 101 will be described.

As shown in FIG. 9B and the like, the control unit 100 sets the comparison image used for the determination by the determination unit 102 to the original image obtained by the last reading by the document reading unit 5 before the jam occurs. .. In this case, the comparison image is set to the front side image "C" of the second original.

As shown in FIG. 9C and the like, the control unit 100 sets the original image to be preview-displayed on the display unit 473 to the original image obtained by the last reading by the original reading unit 5 before the jam occurs. In this case, the control unit 100 sets the original image to be previewed to the front side image "C" of the second original. As a result, the user knows that the reading up to the second front side original has been completed, and it is not necessary to re-place the first original on the original feeding unit 6, and the original feeding unit 6 does not need to re-place the first original. It is possible to recognize that it is the second and subsequent manuscripts that need to be relocated.

As shown in FIG. 9D, it is assumed that the second original that caused the jam is placed on the original feeding unit 6 by the user with the wrong front and back, and the reading of the original is resumed. .. In this case, the reading order of the original image is "A-> B-> C-> D-> C-> E-> F-> G-> H" as shown in FIG. 9 (E).

The control unit 100 deletes the comparison image "C" or the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparison image "C". Here, it is assumed that the control unit 100 deletes the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparative image "C". As shown in FIG. 9 (F), the order of the manuscript images is "A-> B-> C-> D-> E-> F-> G-> H". That is, as shown in FIG. 9A, the order of the manuscript images is the order of the front and back sides in which the manuscript is first placed on the manuscript feeding unit 6. That is, the reading result desired by the user can be obtained.

Further, as shown in FIG. 10 (D), the second original that caused the jam is properly placed on the original feeding unit 6 by the user without making a mistake on the front and back, and the reading of the original is restarted. The case where it is done will be explained. In this case, as shown in FIG. 10 (E), the reading order of the original images is "A-> B-> C-> C-> D-> E-> F-> G-> H".

The control unit 100 deletes the comparison image "C" or the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparison image "C". Here, it is assumed that the control unit 100 deletes the original image "C" (indicated by the diagonal line hatch in the figure) which is the same as the comparative image "C". In this case, the order of the original images is "A-> B-> C-> D-> E-> F-> G-> H" as shown in FIG. 10 (F). That is, as shown in FIG. 10A, the order of the manuscript images is in the order in which the manuscript is first placed in the manuscript feeding unit 6.

As described with reference to FIGS. 9 and 10, when a jam occurs after the double-sided scanning of the document is performed and the scanning of the front side image of the document is completed and before the scanning of the back surface image is completed. When the manuscript that caused the jam is relocated to the manuscript feeding unit 6, the user does not have to worry about the front and back sides, and the output result desired by the user can be obtained, so that the convenience is improved.

A second embodiment of the process by the image forming apparatus 1 will be described with reference to the flowchart shown in FIG. It should be noted that this process is performed when the occurrence of jam is detected by the jam detection unit 101 and then the reading of the document by the document reading unit 5 is restarted.

First, the determination unit 102 sets the original image obtained by the last reading by the document reading unit 5 as the comparison image before the jam occurs (S11), and the determination unit 102 sets the comparison image and the document reading unit after resuming scanning. By comparing with the original image obtained by reading according to 5, it is determined whether or not the original image having the same identity as the comparative image is read (S12).

When the control unit 100 determines that the original image having the same identity as the comparative image has been read by the determination unit 102 (YES in S12), the control unit 100 deletes the original image or the comparative image having the same identity (S13). The control unit 100 stores the deleted original image as one file in the storage unit 31. After this, the process ends. On the other hand, when the determination unit 102 determines that the original image having the same identity as the comparison image has not been read (NO in S12), the control unit 100 ends this process.

According to this second embodiment, it is recognized that the original image having the same identity as the comparative image was read (that is, the original image obtained by the last reading by the original reading unit 5 before the jam occurred was read again. ), Since the original image or the comparative image having the same identity is deleted, it is possible to prevent duplicate extra output. Further, in the second embodiment, the case of double-sided scanning of the original is described as an example, but it is also effective in the case of single-sided scanning.

The present invention is not limited to the configuration of the above embodiment, and various modifications are possible. Further, in the above embodiment, the multifunction device is described as one embodiment of the image forming apparatus according to the present invention, but this is only an example, and for example, another image having a copy function and a scanner function. It may be a forming device.

Further, in the above-described embodiment, the configuration and processing shown by the above-described embodiment using FIGS. 1 to 11 are merely one embodiment of the present invention, and the present invention is not intended to be limited to the configuration and processing.

1 Image forming device 5 Document reading unit 6 Document feeding unit 100 Control unit 101 Jam detection unit 102 Judgment unit 473 Display unit

Claims (11)

A manuscript feeding unit that feeds the placed manuscripts one by one,
A document reading unit that reads an image of a document fed by the document feeding unit, and a document reading unit.
A storage unit that stores the original image obtained by scanning with the original document reader, and a storage unit.
A control unit that stores the original images obtained by reading by the document reading unit in the storage unit in the order in which they are read, and a control unit.
A detection unit that detects the occurrence of jam in the document feeding unit,
When the occurrence of jam is detected by the detection unit and then the reading of the document by the document reading unit is restarted, the comparative image which is the last obtained original image by the reading by the document reading unit before the jam occurs. And a determination unit that compares the original image obtained by scanning by the original reading unit after resuming scanning, and determines whether or not the original image having the same predetermined identity with the comparative image has been read. Prepare,
When the control unit determines that the original image having the same identity as the comparative image has been read by the determination unit, the control unit may read the original image obtained by reading the original image according to a predetermined rule. An image reader that changes the order. The document reading unit reads both sides of the document and reads the document on both sides.
The image reading device according to claim 1, wherein the control unit stores an image of each side of a document read by the document reading unit in the storage unit while distinguishing between a front surface and a back surface of the document. After the front side image of the original is read by the original reading unit, the original feeding unit is configured to reverse the front and back of the original and feed the original to the original reading unit again. The image reading device according to claim 2. After the reading of the front side image of the original by the original reading unit is completed and before the reading of the back side image of the original is completed, the detection unit detects the occurrence of jam, and then the original reading unit detects the occurrence of the jam. When scanning is resumed and it is determined by the determination unit that the original image having the same identity as the comparison image has been scanned.
When the original image determined by the determination unit to have the same identity as the comparative image is the back surface image of the original read by the original reading unit after the restart, the control unit causes the restart. Later, the back side image of the document read by the document reading unit or one of the comparison images is deleted, and the front side image of the document read by the document reading unit after the restart is used as the back image of the document in the above order. The image reading device according to claim 2 or 3, wherein the image is stored in the storage unit as a predetermined rule. After the reading of the front side image of the document by the document reading unit is completed and before the scanning of the back surface image of the document is completed, the occurrence of jam is detected by the detection unit, and then a plurality of jams are detected by the document reading unit. When the reading of the original is restarted and the determination unit determines that the original image having the same identity as the comparative image has been read,
The control unit uses the original image determined by the determination unit to have the same identity as the comparative image as the original image in the same order as the comparative image, and is a symmetrical image having a front-back relationship with the original image. The second or third aspect of the present invention, wherein the order is changed according to the predetermined rule that the back surface of the manuscript image is used, and one of the comparative image or the manuscript image is deleted. Image reader. With more display
Further, when the detection unit detects the occurrence of jam after the reading of the front side image of the original is completed and before the reading of the back side image of the original is completed, the control unit determines the cause of the jam. The image reading device according to claim 4 or 5, wherein the back surface image of the original document immediately before the original document is preview-displayed on the display unit. A manuscript feeding unit that feeds the placed manuscripts one by one,
A document reading unit that reads an image of a document fed by the document feeding unit, and a document reading unit.
A storage unit that stores the original image obtained by scanning with the original document reader, and a storage unit.
A control unit that stores the original images obtained by reading by the document reading unit in the storage unit in the order in which they are read, and a control unit.
A detection unit that detects the occurrence of jam in the document feeding unit,
When the occurrence of jam is detected by the detection unit and then the reading of the document by the document reading unit is restarted, the original image as a comparison image finally obtained by the reading by the document reading unit before the jam occurs. And a determination unit that compares the original image obtained by scanning by the original reading unit after resuming scanning, and determines whether or not the original image having the same predetermined identity with the comparative image has been read. Prepare,
When the control unit determines that the original image having the same identity as the comparative image has been read by the determination unit, the control unit deletes either the original image having the same identity or the comparative image before the jam occurs. An image reading device that stores, in addition to the original image obtained by scanning by the document reading unit, the original image obtained by reading by the document reading unit after resuming scanning in the storage unit. The document reading unit reads both sides of the document and reads the document on both sides.
The image reading device according to claim 7, wherein the control unit stores an image of each side of a document read by the document reading unit in the storage unit while distinguishing between a front surface and a back surface of the document. After the front side image of the original is read by the original reading unit, the original feeding unit is configured to reverse the front and back of the original and feed the original to the original reading unit again. The image reading device according to claim 8. With more display
The image reading device according to claim 8 or 9, wherein the control unit further previews the original image obtained by reading by the document reading unit before the occurrence of jam on the display unit. The image reading device according to any one of claims 1 to 10,
The recording medium is provided with an image forming unit for forming an image.
The control unit is an image forming apparatus that causes the image forming unit to form an image of a document stored in the storage unit in the order described above.

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