Medium processing device and image forming system

Abstract

To provide a medium conveyance device capable of improving alignment accuracy by detecting a width size of each conveyed medium by a plurality of detecting means in a medium aligning mechanism provided in the medium conveyance device.SOLUTION: A medium processing device includes: conveyance means for conveying a sheet-like medium; medium edge part detection means for detecting a width edge part position of the medium being conveyed; and control means for changing conveyance control of the medium in accordance with the detected width edge part position, wherein the medium edge part detection means is plural and individually detects positions of both width end parts of the medium being conveyed.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a media processing device and an image forming system. [Background technology]

[0002] Media processing devices are known that perform specific processes on sheet-like media, such as alignment, which aligns the edges of multiple media that have been conveyed, and shifting, which changes the media discharge destination (discharge position) for each medium.

[0003] A technology has been disclosed that uses a sensor to detect the edge of the medium being transported and controls the operation of a shift mechanism located downstream of the sensor in the transport direction of the medium, with the aim of enabling shifting of media to be discharged to multiple destinations with a simple configuration (see, for example, Patent Document 1). Summary of the Invention [Problem to be solved by the invention]

[0004] The technology disclosed in Patent Document 1 reads the width of a medium and controls processing operations performed downstream. However, the size (length dimension in the width direction) of media varies slightly from one sheet to another, even for media of the same standard. This variation can be several millimeters smaller (larger) than the standard (standard size), depending on the media production lot. When there is only one detection means for reading the width of a medium, as in Patent Document 1, the width size of the medium is unknown, which leads to the problem of low alignment accuracy of the width direction edges of the medium.

[0005] The present invention aims to provide a medium transport device that can improve alignment accuracy by detecting the width size of each transported medium using a plurality of detection means in a medium alignment mechanism included in the medium transport device. [Means for solving the problem]

[0006] In order to solve the above problem, one aspect of the present invention relates to a media conveying device comprising a conveying means for conveying a sheet-like medium, a media edge detection means for detecting the width end position of the medium during conveyance, and a control means for changing the conveyance control of the medium depending on the detected width end position, wherein the media edge detection means are multiple and individually detect the positions of both width ends of the medium during conveyance. [Effects of the Invention]

[0007] According to the present invention, in the medium alignment mechanism provided in the medium transport device, the width size of each transported medium is detected by a plurality of detection means, thereby improving alignment accuracy. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing the overall configuration of an image forming system. [Figure 2] FIG. 2 is a diagram showing the internal structure of the post-processing device. [Figure 3] FIG. 2 is a hardware configuration diagram of a control block included in the post-processing device according to the embodiment. [Figure 4] FIG. 2 is a diagram showing the main configuration of the post-processing device according to the present embodiment. [Figure 5] 5A and 5B are diagrams showing an example of conveyance control of the post-processing device according to the embodiment. [Figure 6] 5A and 5B are diagrams showing an example of conveyance control of the post-processing device according to the embodiment. [Figure 7] 10A and 10B are diagrams showing another example of conveyance control of the post-processing device according to the embodiment. [Figure 8] 10A and 10B are diagrams showing another example of conveyance control of the post-processing device according to the embodiment. [Figure 9] 10A and 10B are diagrams showing another example of conveyance control of the post-processing device according to the embodiment. [Figure 10] 10A and 10B are diagrams showing still another example of conveyance control of the post-processing device according to the embodiment. [Figure 11] 10A and 10B are diagrams showing still another example of conveyance control of the post-processing device according to the embodiment. [Figure 12] 10A and 10B are diagrams showing still another example of conveyance control of the post-processing device according to the embodiment. [Figure 13] 10A and 10B are diagrams showing still another example of conveyance control of the post-processing device according to the embodiment. [Figure 14] 6 is a flowchart showing a transport control process of the post-processing device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Embodiment of Image Forming System 1] An image forming system 1 according to the present invention will now be described with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of the image forming system 1. The image forming system 1 has an image forming function for forming an image on paper P, which is a type of sheet-like medium, and a media processing function for performing predetermined media processing on the paper P on which the image has been formed. As shown in FIG. 1, the image forming system 1 is configured to operate in cooperation with an image forming device 2 having an image forming function and a post-processing device 3 serving as a media processing device having a media processing function according to the present invention.

[0010] In this embodiment, the explanation is based on the premise that the sheet-like medium to be processed in the image forming system 1 is "paper." However, the object of processing according to this embodiment is not limited to paper. For example, any type of medium is acceptable as long as an image can be formed on the medium using a conventionally known image forming process. This also includes media that can be subjected to folding and binding processes, and there are no limitations on the material, specifications, etc.

[0011] The image forming device 2 forms an image on a sheet P and discharges the sheet P with the image formed thereon to the post-processing device 3. The image forming device 2 includes a storage tray 211 for storing sheets P, a conveying unit 212 for conveying the sheets P stored in the storage tray 211, and an image forming unit 213 for forming an image on the sheets P conveyed by the conveying unit 212.

[0012] The image forming unit 213 may be an inkjet type that forms an image using ink, or an electrophotographic type that forms an image using toner. The image forming apparatus 2 also includes a control unit 100a that controls various operations of the conveying unit 212 and the image forming unit 213. The configuration of the image forming apparatus 2 is already well known, so a detailed description thereof will be omitted.

[0013] Incidentally, paper is a widely known example of a sheet-like medium. Therefore, in this specification, when describing a sheet-like medium to be processed, the term "paper P" will be used. Furthermore, when describing a sheet bundle, the term "paper bundle Pb" will be used as an example, which is a bundle of multiple sheets of paper as a medium.

[0014] [First embodiment of post-processing device 3] FIG. 2 is a diagram showing the internal structure of the post-processing device 3 according to the first embodiment. The post-processing device 3 has a function of performing predetermined post-processing on sheets P on which images have been formed by the image forming device 2. One type of post-processing according to this embodiment is a binding process that serves as a "pressure binding process" in which a stack of multiple sheets P on which images have been formed (a sheet stack) is bound without using staples. Another type of post-processing according to this embodiment is a binding process that serves as a "staple binding process" in which a stack of multiple sheets P on which images have been formed (a sheet stack) is bound using staples. Hereinafter, the stack of sheets P will be referred to as a "sheet stack Pb" as a medium stack.

[0015] In this embodiment, the liquid application process when performing pressure binding processing will be mainly described. However, the liquid application process performed in relation to staple binding processing is also similar. Furthermore, when the term "binding processing" is used in the following description, it means both the "pressure binding processing" and the "staple binding processing" and is not limited to the binding method (whether using staples or pressure deformation).

[0016] In addition, the "pressure binding process" according to this embodiment is, more specifically, a process of applying pressure to a binding position corresponding to a part of the paper stack Pb to deform (pressure-deform) the binding position and bind the sheets, and is a process called "pressure binding." Note that the binding processes that can be performed by the post-processing device 3 include an end binding process that binds the end of the paper stack Pb and a saddle binding process that binds the center of the paper stack Pb.

[0017] The post-processing device 3 includes pairs of conveying rollers, such as an inlet conveying roller 103, an intermediate conveying roller 105, an upper conveying roller 108, an upper discharge roller 109, a shift roller 113, a shift discharge roller 121, and a switching member 106, as well as a control unit 100b (control means). The control unit 100b controls the operations of the inlet conveying roller 103, the intermediate conveying roller 105, the upper conveying roller 108, the upper discharge roller 109, the shift roller 113, the shift discharge roller 121, and the switching member 106, which serve as the conveying means. The control unit 100b will be described in detail later.

[0018] The entrance conveyance rollers 103, intermediate conveyance rollers 105, upper conveyance rollers 108, upper discharge rollers 109, shift rollers 113, and shift discharge rollers 121 convey the paper P supplied from the image forming device 2 inside the post-processing device 3. More specifically, the entrance conveyance rollers 103, intermediate conveyance rollers 105, upper conveyance rollers 108, and upper discharge rollers 109 convey the paper P along the first conveyance path Ph1. The shift rollers 113 and shift discharge rollers 121 convey the paper P along the second conveyance path Ph2.

[0019] An inlet sensor 102 is disposed upstream of the inlet conveying rollers 103 in the conveying direction. A medium width detection sensor serving as a medium detection unit is disposed downstream of the inlet conveying rollers 103 in the conveying direction and upstream of the shift rollers 113 in the conveying direction. The first conveying path Ph1 is a path from the supply port for paper P from the image forming device 2 to the upper tray 110. The second conveying path Ph2 branches off from the first conveying path Ph1 between the intermediate conveying rollers 105 and the shift discharge rollers 121 in the conveying direction, and is a path that passes through the staple tray 114 and reaches the shift tray 122.

[0020] The switching member 106 is disposed at a branching position of the first transport path Ph1 and the second transport path Ph2. The switching member 106 is configured to be switchable between a first position where the sheet P is discharged onto the upper tray 110 via the first transport path Ph1, and a second position where the sheet P transported along the first transport path Ph1 is guided to the second transport path Ph2. The post-processing device 3 also includes a plurality of sensors that detect the position of the sheet P on each of the transport paths Ph1 and Ph2.

[0021] The post-processing device 3 includes an upper tray 110. The paper sheets P discharged through the first transport path Ph1 are placed on the upper tray 110. Of the paper sheets P supplied from the image forming device 2, those that are not to be bound are discharged to the upper tray 110.

[0022] The post-processing device 3 also includes a staple tray 114 as a loading tray, a trailing edge aligner 118, a jogger 115, binding means 119, and a shift tray 122. The staple tray 114, the trailing edge aligner 118, the jogger 115, and the binding means 119 perform edge binding processing on a sheet bundle Pb made up of a plurality of sheets P transported from the second transport path Ph2 to the staple tray 114. The sheet bundle Pb that has been subjected to edge binding processing is discharged to the shift tray 122 from among the sheets P supplied from the image forming device 2.

[0023] The "edge binding process" referred to here refers to the binding process performed by the binding means 119. Specifically, it includes a "parallel binding process" in which binding process is performed along one side of the paper stack Pb that is parallel to the main scanning direction, a "diagonal binding process" in which binding process is performed at a corner of the paper stack Pb, and a "vertical binding process" in which binding process is performed along one side of the paper stack Pb that is parallel to the transport direction.

[0024] Hereinafter, the direction in which the paper P is transported from the shift discharge rollers 121 toward the trailing edge alignment 118 is defined as the "transport direction." In other words, in this specification, the "transport direction" corresponds to the direction in which the paper P discharged from the image forming apparatus 2 moves toward the shift tray 122 by the entrance transport rollers 103 and the like, then changes direction by the shift discharge rollers 121, and heads toward the trailing edge alignment 118, which is a different direction from the previous direction. In addition, the direction perpendicular to the thickness direction and transport direction of the paper P is defined as the "main scanning direction (width direction of the paper P)."

[0025] The plurality of sheets P transported in order via the second transport path Ph2 are temporarily placed on a staple tray 114 as a loading tray. A trailing edge aligner 118 aligns the position of the sheets P or sheet bundle Pb placed on the staple tray 114 in the transport direction. A jogger 115 as an alignment means aligns the position of the sheets P or sheet bundle Pb placed on the staple tray 114 in the main scanning direction. A binding means 119 performs edge binding processing on the sheet bundle Pb aligned by the trailing edge aligner 118 and the jogger 115. Then, shift discharge rollers 121 discharge the sheet bundle Pb that has been edge-stitched onto a shift tray 122.

[0026] [Configuration of control block of post-processing device 3] Next, the control block configuration of post-processing device 3 will be described with reference to Fig. 3. Fig. 3 is a hardware configuration diagram for executing control processing in post-processing device 3. As shown in Fig. 10, post-processing device 3 has a configuration in which a CPU (Central Processing Unit) 11, a RAM (Random Access Memory) 12, a ROM (Read Only Memory) 13, an HDD (Hard Disk Drive) 14, and an I / F 15 are connected via a common bus 19.

[0027] The CPU 11 is a computing means and controls the overall operation of the post-processing device 3. The RAM 12 is a volatile storage medium capable of high-speed reading and writing of information, and is used as a work area when the CPU 11 processes information. The ROM 13 is a read-only non-volatile storage medium in which programs such as firmware are stored. The HDD 14 is a non-volatile storage medium with a large storage capacity that is capable of reading and writing information, and in which an OS (Operating System), various control programs, application programs, etc. are stored.

[0028] The post-processing device 3 processes a control program stored in the ROM 13, an information processing program (application program) loaded into the RAM 12 from a storage medium such as the HDD 14, and the like using the arithmetic functions of the CPU 11. This processing constitutes a software control unit including various functional modules of the post-processing device 3. The combination of the software control unit thus constituted and the hardware resources installed in the post-processing device 3 constitutes functional blocks that realize the functions of the post-processing device 3. In other words, the CPU 11, RAM 12, ROM 13, HDD 14, and I / F 15 constitute a control unit 100b (control means) that controls the operation of the post-processing device 3.

[0029] I / F 15 is an interface that connects the entrance sensor 102, the entrance conveying roller 103, the intermediate conveying roller 105, the switching member 106, the upper conveying roller 108, the upper discharge roller 109, the shift roller 113, the jogger 115, the tapping roller 116, the return roller 117, the shift discharge roller 121, the media width detection sensor 200, and the operation panel 130 to the common bus 19.

[0030] The control unit 100b controls the operations of the inlet conveying rollers 103, the intermediate conveying rollers 105, the switching member 106, the upper conveying rollers 108, the upper discharge rollers 109, the shift rollers 113, the jogger 115, the tapping rollers 116, the return rollers 117, and the shift discharge rollers 121 through the I / F 15. The control unit 100b also acquires the detection results of the inlet sensor 102 and the medium width detection sensor 200.

[0031] As shown in FIG. 1, the image forming apparatus 2 includes an operation panel 130. The operation panel 130 includes an operation unit that accepts input operations from a user and a display (notification unit) that notifies the user of information. The operation unit includes, for example, hard keys, a touch panel superimposed on the display, etc. The operation panel 130 acquires information from the user through the operation unit and provides the information to the user through the display. Note that specific examples of the notification unit are not limited to a display, and may include an LED lamp, a speaker, etc. The post-processing device 3 may also be provided with an operation panel 130 similar to the above.

[0032] As described above, the post-processing device 3 uses the hardware resources of the control unit 100b to realize the function of controlling operations related to liquid deposition through software (control programs) executed by the CPU 11.

[0033] [Main components of post-processing device 3] FIG. 4(a) shows the main components related to the features of the present invention in a post-processing device 3, which is an embodiment of a media processing device according to the present invention. FIG. 4(b) is a schematic plan view of the transport path as seen from above. As shown in FIG. 4(a), a media width detection sensor 200, which serves as a media edge detection means, is located downstream of the inlet transport rollers 103 and upstream of the intermediate transport rollers 105. When controlling the transport of paper P based on the detection results of the media width detection sensor 200, it is the shift rollers 113 that perform the operation of changing the discharge position of paper P. The shift rollers 113 are located downstream of the intermediate transport rollers 105. In other words, the media width detection sensor 200 is located upstream of the shift rollers 113, which are the component that performs the transport control operation.

[0034] 4(b), a pair of medium width detection sensors 200 are arranged facing each other near the widthwise ends of the conveyance path downstream of the inlet conveyance rollers 103. One is designated as the first medium width detection sensor 200a, and the other is designated as the second medium width detection sensor 200b. The first medium width detection sensor 200a and the second medium width detection sensor 200b are positioned so that they can detect the dimension of the paper P passing through the conveyance path in a direction perpendicular to the conveyance direction, i.e., the width dimension of the paper P. In other words, the first medium width detection sensor 200a and the second medium width detection sensor 200b are positioned so that they can detect the position where the widthwise ends of the paper P pass.

[0035] 4(b), a jogger 115 for aligning the widthwise end (widthwise end position) of the paper P is disposed between the shift roller 113 and the shift discharge driven roller 120. In this embodiment, the jogger 115 is disposed on one side of the widthwise end of the paper P, and a medium position regulating unit 123 for regulating the widthwise position of the paper P is provided on the other side.

[0036] [First Example of First Embodiment] A first example of an embodiment of the present invention will be described with reference to Figures 5 and 6. As shown in Figure 5, the jogger 115 moves from a home position (initial position) to a standby position before the paper P is conveyed. When aligning the widthwise edges of the paper P, the jogger 115 performs a certain jogging motion, thereby aligning the widthwise edge positions of multiple sheets of paper P.

[0037] 5, when the paper P is transported from the upstream side, the medium width detection sensors 200 (first medium width detection sensor 200a and second medium width detection sensor 200b) arranged on the transport path upstream of the jogger 115 detect the positions of the widthwise edges of the paper P and notify the control unit 100b. Based on the detection results at this time, the control unit 100b controls the jogger 115 to change the standby position.

[0038] Next, as shown in Fig. 6, a jogging operation is performed with an optimum amount of pressure in the width direction relative to the position of the width edge of the conveyed paper P. The amount of pressure in this jogging operation can be adjusted according to the individual width dimensions of the paper P. The jogging operation corresponds to the operation of the jogger 115 pressing the width edge of the paper P toward the medium position regulating unit 123. In this way, by controlling the standby position and pressure amount of the jogger 115 for the jogging operation for each paper P, it is possible to improve the alignment accuracy of paper P with various variations in size.

[0039] [Second Example of First Embodiment] A second example of an embodiment of the present invention will be described with reference to Figures 7, 8, and 9. As shown in Figure 7, the joggers 115 according to this example are configured as a pair so as to press and align the paper P from both sides in the width direction. The first jogger 115a and the second jogger 115b are disposed downstream of the shift roller 113 and upstream of the shift discharge driven roller 120.

[0040] First, as shown in FIG. 8, when paper P is transported from the upstream side, medium width detection sensors 200 (first medium width detection sensor 200a and second medium width detection sensor 200b) arranged on the transport path upstream of jogger 115 detect the positions of both widthwise ends of paper P and notify control unit 100b. Based on the detection results at this time, control unit 100b controls jogger 115 to change the standby position. First medium width detection sensor 200a detects the edge of paper P corresponding to the right side in the transport direction. Second medium width detection sensor 200b detects the edge of paper P corresponding to the left side in the transport direction.

[0041] Next, as shown in Fig. 9, a jogging operation is performed with an optimal widthwise pressure amount relative to the position of the widthwise edge of the conveyed sheet P. The pressure amount in this jogging operation is calculated individually according to the position of each widthwise edge of the sheet P in the conveying direction. Therefore, an optimal jogging operation can be performed according to the individual width dimension of the sheet P and the individual widthwise position during conveyance. Furthermore, because the standby position and pressure amount of the jogger 115 for the jogging operation can be individually controlled for each sheet P, it is possible to improve alignment accuracy by suppressing variations in the position of the sheet P during conveyance, even for sheets P with various sizes, and even if the position of the sheet P during conveyance can change slightly each time it is conveyed.

[0042] [Second embodiment] Next, another embodiment of the present invention will be described with reference to Figures 10, 11, 12, and 13. In the post-processing device 3 according to this embodiment, when the sheet P passes through the shift rollers 113, the shift rollers 113 are controlled to move and change the position of the sheet P relative to the conveyance path in the width direction of the sheet P, and to discharge the sheet P at the changed position. This control makes it possible to sort the sheets P discharged onto the shift tray 122.

[0043] As shown in FIG. 10, in this embodiment as well, medium width detection sensors 200 (first medium width detection sensor 200a and second medium width detection sensor 200b) are arranged in the conveyance path upstream of shift rollers 113.

[0044] First, as shown in FIG. 11, when paper P is transported from the upstream side, the medium width detection sensor 200 (first medium width detection sensor 200a and second medium width detection sensor 200b) arranged on the transport path upstream of the jogger 115 detects the position of the widthwise end of the paper P and notifies the control unit 100b.

[0045] Subsequently, as shown in FIG. 12, when the paper P reaches a position where it is held by the shift roller 113, the transport of the paper P is temporarily stopped.

[0046] 13, based on the results of detection by the medium width detection sensors 200 (first medium width detection sensor 200a and second medium width detection sensor 200b), the control unit 100b calculates the movement amount (shift amount) of the shift roller 113 and moves the shift roller 113 according to the calculated shift amount. This changes the position of the paper P in the width direction. Then, the paper P is discharged downstream in the changed position.

[0047] As described above, the post-processing device 3 according to this embodiment can perform an optimal amount of shifting on both ends of each sheet P that is conveyed, thereby improving the shift stacking accuracy of sheets P that have various variations in size and in the main scanning direction during conveyance. In addition, it is possible to control media alignment based on each of the left edge of the sheet P in the conveyance direction, the conveyance center of the sheet P, and the right edge of the sheet P in the conveyance direction.

[0048] [Control flow implementation example] First, the control unit 100b is notified that printing processing has started in the image forming apparatus 2, which is an upstream apparatus of the post-processing apparatus 3, and receives a print instruction to start (S1401).

[0049] Subsequently, the post-processing device 3 receives the sheet P by the inlet conveying rollers 103 via the inlet guide 101. The reception of the sheet P is detected by the inlet sensor 102 (S1402).

[0050] Next, the positions of the width direction edges of the paper P are detected by the medium width detection sensors 200 (first medium width detection sensor 200a and second medium width detection sensor 200b) (S1403).

[0051] Next, based on the detection result of step S1403, control unit 100b calculates the movement amount of paper P in the width direction (S1404). Then, based on the paper movement amount calculated in step S1404, control unit 100b moves jogger 115 to perform a paper alignment operation (S1405).

[0052] Finally, the sheet P is discharged onto the shift tray 122 by the shift discharge rollers 121 (S1406).

[0053] Before executing step S1406, multiple sheets of paper P that have been aligned may be loaded onto the staple tray 114, and after a predetermined number of sheets have been loaded, the end binding process may be performed using the binding means 119, and then the stack of paper Pb may be discharged onto the shift tray 122 by the shift discharge rollers 121.

[0054] According to the embodiment of the present invention described above, the medium alignment mechanism provided in the post-processing device 3 detects the size (paper size) of each conveyed medium (paper P) using multiple sensors (first medium width detection sensor 200a and second medium width detection sensor 200b), and aligns the paper width direction based on the detected paper size information. This improves the alignment accuracy in the main scanning direction of the edge-stitched paper stack Pb and the alignment accuracy in the main scanning direction of shift discharge.

[0055] More specifically, the main scanning direction position information of the paper detected by the first medium width detection sensor 200a and the second medium width detection sensor 200b makes it possible to appropriately control the operations executed in post-processing. For example, by detecting both ends of the paper P, the length of the paper in the main scanning direction can be determined, and the paper can be aligned at the center.

[0056] Furthermore, since the operating range of the width aligning means can be controlled with a small number of components, it is possible to improve the accuracy of aligning the sheets P in the main scanning direction.

[0057] Furthermore, since the operating range of the paper shifting means can be controlled, it is possible to improve the accuracy of stacking the paper P in the main scanning direction.

[0058] As already explained, the control method by the control unit 100b described above is realized by cooperation between the hardware resources of a computer and a program as computer software. That is, the control method is a method executed by a computer by causing an arithmetic unit, a storage unit, an input unit, an output unit, and a control unit to operate in cooperation with each other based on the program. The program may also be written to a storage unit or a storage medium, etc., and distributed, or distributed via a telecommunications line, etc.

[0059] Furthermore, the present invention is not limited to the above-described exemplary embodiments, and various modifications are possible without departing from the technical gist thereof. The present invention covers all technical matters included in the technical ideas described in the claims. The above-described embodiments are preferred examples, but a person skilled in the art can realize various modifications from the disclosed content. Such modifications are also included in the technical scope described in the claims.

[0060] [Aspects of the present invention] The contents of the present invention are as follows, for example. <1> a conveying means for conveying a sheet-like medium; a medium edge detection means for detecting the width edge position of the medium during transport; a control unit that changes the transport control of the medium in accordance with the detected width edge position; Equipped with the medium edge detection means is a plurality of means for detecting the positions of both widthwise edges of the medium being conveyed, individually; The media processing device is characterized by the above. <2> an alignment means for pressing the width edges of the stacked media from one side in the width direction of the media to align the width edge positions; the control means changes the standby position of the aligning means in accordance with the detected position of the width end portion. The aforementioned <1> 2 is a media processing device according to the first embodiment. <3> an alignment means for pressing width edges of a plurality of stacked media from both sides in the width direction of the media to align the width edge positions; the control means changes the standby position of the aligning means in accordance with the detected position of the width end portion. The aforementioned <1> 2 is a media processing device according to the first embodiment. <4> the control means shifts the conveying means in accordance with the detected width edge position, and changes the width edge position of the medium being conveyed. The aforementioned <1> and the above <3> 1 is a media processing device according to any one of claims 1 to 8. <5> an image forming device for forming an image on the medium; The conveyance control is performed on the plurality of media on which images are formed by the image forming apparatus. <1> and the above <4> a media processing device according to any one of the preceding claims; The image forming system is characterized by comprising: [Explanation of symbols]

[0061] 1: Image forming system 2: Image forming device 3: Post-processing device 100b: control unit 101: Entrance Guide 102: Entrance sensor 103: Entrance conveying roller 105: Intermediate conveying roller 106: Switching member 108: Upper conveying roller 109: Upper discharge roller 110: Upper tray 113: Shift roller 114: Staple tray 115: Jogger 116: Koro 117: Return roller 118: End alignment 119: Binding means 120: Shift discharge driven roller 121: Shift discharge roller 122: Shift tray 123:Media position regulation section 130: Operation panel 200: Media width detection sensor [Prior art documents] [Patent documents]

[0062] [Patent Document 1] Japanese Patent Publication No. 2021-020779

Claims

1. a conveying means for conveying a sheet-like medium; a medium edge detection means for detecting the width edge position of the medium during transport; a control unit that changes the transport control of the medium in accordance with the detected width edge position; Equipped with The medium edge detection means is a plurality of means for individually detecting the positions of both widthwise edges of the medium during transport. A media processing device characterized by:

2. an alignment means for pressing the width edges of the stacked media from one side in the width direction of the media to align the width edge positions; the control means changes the standby position of the aligning means in accordance with the detected position of the width end portion. The media processing device of claim 1 .

3. an alignment means for pressing width edges of a plurality of stacked media from both sides in the width direction of the media to align the width edge positions; the control means changes the standby position of the aligning means in accordance with the detected position of the width end portion. The media processing device of claim 1 .

4. the control means shifts the conveying means in accordance with the detected width edge position, and changes the width edge position of the medium being conveyed. The media processing device of claim 1 .

5. an image forming device for forming an image on the medium; a media processing device according to claim 1 , which performs the transport control on a plurality of media on which images have been formed by the image forming device; An image forming system comprising:

Images