JP2011201652A - Recording material processing device and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording material processing device capable of suppressing degradation of the productivity while enabling binding of recording materials.SOLUTION: As shown in (A), when the rear end of a paper sheet bundle passes through a paper sheet sensor 47, and the rear end is detected by the paper sheet sensor 47, the rotation of a conveying roll 61 is stopped, and the conveyance of the paper sheet bundle is stopped. Thereafter, a first pressing member 41 advances toward a second pressing member 42, and the binding of the rear end of the paper sheet bundle is executed. Further, in the present embodiment, as shown in (A), a second binding function unit 40 is provided on the downstream side of a reaching part of a fore end S of a paper sheet to be newly conveyed to a paper sheet stacking unit 60.

Description

  The present invention relates to a recording material processing apparatus and an image forming system.

  In order to freely select a binding process that can reflect the user's preference, at least one of a plurality of binding means can be selected automatically or manually, and post-processing is performed on the sheet bundle by the selected binding means. There has been proposed an image forming system configured to be performed (see, for example, Patent Document 1).

JP 2000-318918 A

  An object of the present invention is to provide a recording material processing apparatus and the like that can suppress a decrease in productivity while enabling a binding process for the recording material.

The invention according to claim 1 has a support surface that supports the recording material from below, and is conveyed from the upstream side in the recording material conveyance direction, and is fed from the front end side toward the support surface toward the support surface. And a recording material stacking unit that generates a recording material bundle by abutting against the regulating unit, and a downstream side in the recording material transport direction from a point where the recording material is delivered toward the support surface than a point where the leading end of the recording material reaches And a binding mechanism that binds the recording material bundle that is positioned and generated by the recording material stacking unit and conveyed from the recording material stacking unit.
According to a second aspect of the present invention, when the binding process of the recording material bundle by the binding mechanism is performed, the rear end portion of the recording material bundle is positioned downstream of the arrival position in the recording material conveyance direction. The recording material processing apparatus according to claim 1, wherein the recording material bundle is arranged.
According to a third aspect of the present invention, the binding mechanism is provided on the downstream side in the recording material conveyance direction from the reaching position of the leading end of the largest recording material that can be bound by the recording material processing apparatus. The recording material processing apparatus according to claim 1, wherein the recording material processing apparatus is a recording material processing apparatus.
According to a fourth aspect of the present invention, there is provided a detecting means for detecting a deviation produced between one recording material constituting the recording material bundle and another recording material. The recording material processing apparatus according to any one of the above.

The invention according to claim 5 includes an image forming apparatus that forms an image on a recording material, and a recording material processing apparatus that performs a predetermined process on the recording material on which an image is formed by the image forming apparatus. The recording material processing apparatus has a support surface that supports the recording material from below, and is conveyed from the upstream side in the recording material conveyance direction and sent from the front end side toward the support surface. And a recording material stacking unit that generates a recording material bundle by abutting against the regulating unit, and a downstream side in the recording material transport direction from a point where the recording material is delivered toward the support surface than a point where the leading end of the recording material reaches A recording material binding mechanism that binds the recording material bundle that is positioned and generated by the recording material stacking unit and transported from the recording material stacking unit.
A sixth aspect of the present invention is the image forming system according to the fifth aspect, wherein the recording material binding mechanism performs a binding process on a rear end portion of the recording material bundle.
The invention according to claim 7 further includes a conveying unit that conveys the recording material bundle generated by the recording material accumulating unit toward the recording material binding mechanism, and the conveying unit includes at least the regulating unit. 7. The image forming system according to claim 5, wherein the recording material bundle is transported by moving a part thereof downstream in the recording material transport direction.
According to an eighth aspect of the present invention, the recording material processing apparatus further includes a pre-transport binding mechanism that binds a recording material bundle before being transported to the recording material binding mechanism, and the recording material binding mechanism and the pre-transport binding. 8. The binding mechanism according to claim 5, wherein one of the mechanisms performs a binding process using a metal needle, and the other binding mechanism performs a binding process without using a metal needle. An image forming system.

According to the first aspect of the present invention, it is possible to provide a recording material processing apparatus capable of suppressing a decrease in productivity while enabling a binding process for the recording material.
According to the second aspect of the present invention, when the binding process is being performed by the binding mechanism, a recording material having a larger size can be accumulated in the recording material accumulating unit, and a reduction in productivity can be further suppressed.
According to the invention of claim 3, a decrease in productivity is further suppressed as compared with the case where the present invention is not adopted.
According to the invention of claim 4, it is possible to prevent the binding process from being performed on the recording material bundle in an insufficiently aligned state.
According to the fifth aspect of the present invention, it is possible to provide an image forming system capable of suppressing a decrease in productivity while enabling a binding process for a recording material.
According to the invention of claim 6, when the binding process is performed by the recording material binding mechanism, a recording material having a larger size can be accumulated in the recording material accumulating unit, and a reduction in productivity can be further suppressed.
According to the seventh aspect of the present invention, the shift of the recording material in the recording material bundle can be suppressed as compared with the case where the present invention is not adopted.
According to the eighth aspect of the invention, it is possible to perform not only a binding process using a metal needle but also a binding process without using a metal needle.

1 is a diagram illustrating a configuration of an image forming system to which the exemplary embodiment is applied. It is the figure which showed the structure of the sheet | seat post-processing apparatus of this Embodiment. It is the figure which expanded and showed the finisher unit. It is a figure at the time of seeing the 2nd binding function part from the arrow A direction of FIG. It is a figure explaining the state which a 1st binding function part performs a staple binding to the edge part of a paper bundle, Comprising: It is the figure showing the state which looked at the paper stacking part from the upper part. It is a figure for demonstrating the binding process by a 2nd binding function part. It is a figure for demonstrating the binding process by a 2nd binding function part.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a diagram illustrating a configuration of an image forming system to which the exemplary embodiment is applied. An image forming system shown in FIG. 1 includes, for example, an image forming apparatus 1 such as a printer or a copier that forms a color image by an electrophotographic method, and a recording material (paper, sheet) after the image is formed by the image forming apparatus 1. And a sheet post-processing apparatus 2 (an example of a recording material processing apparatus) that performs post-processing such as binding.

  The image forming apparatus 1 is configured in a so-called tandem system, and forms four image forming units 100Y, 100M, 100C, and 100K (also collectively referred to as “image forming unit 100”) that perform image formation based on each color image data. A laser exposure apparatus 101 that exposes a photosensitive drum 107 provided in the unit 100 is provided. In addition, the image forming apparatus 1 includes an intermediate transfer belt 102 onto which the toner images of the respective colors formed by the respective image forming units 100 are transferred, and an intermediate transfer belt 102 that receives the respective color toner images formed by the respective image forming units 100. A primary transfer roll 103 that sequentially transfers (primary transfer) to each other, and a secondary transfer roll 104 that collectively transfers (secondary transfer) each color toner image transferred onto the intermediate transfer belt 102 to a recording material (paper). In addition, a fixing device 105 for fixing each color toner image on a sheet, and a main body control unit 106 for controlling the operation of the image forming apparatus 1 are provided.

  In each image forming unit 100 of the image forming apparatus 1, the charging process to the photosensitive drum 107, the electrostatic latent image forming process on the photosensitive drum 107 by the scanning exposure from the laser exposure apparatus 101, and the formed electrostatic latent image The toner image of each color is formed through the development process of each color toner. Each color toner image formed on each image forming unit 100 is sequentially electrostatically transferred onto the intermediate transfer belt 102 by the primary transfer roll 103. Each color toner image is conveyed toward the position where the secondary transfer roll 104 is disposed as the intermediate transfer belt 102 moves.

  On the other hand, in the image forming apparatus 1, a plurality of sheets P1 to P4 (collectively referred to as “sheet P” and “sheet bundle P”) of different sizes and types are accommodated in the sheet accommodating portions 110A to 110D, respectively. Yes. For example, when the paper P1 is designated by the main body control unit 106, the paper P1 is taken out from the paper storage unit 110A by the pickup roll 111, and conveyed one by one to the position of the registration roll 113 by the conveyance roll 112. The same applies to the case where the sheets P2 to P4 are designated by the main body control unit 106. Then, the paper P is supplied from the registration roll 113 in accordance with the timing when each color toner image on the intermediate transfer belt 102 is conveyed to the arrangement position of the secondary transfer roll 104. As a result, the toner images of the respective colors are collectively electrostatically transferred (secondary transfer) onto the paper P by the action of the transfer electric field formed by the secondary transfer roll 104.

  Thereafter, the paper P onto which the color toner images are secondarily transferred is peeled off from the intermediate transfer belt 102 and conveyed to the fixing device 105. In the fixing device 105, each color toner image is fixed on the paper P by a fixing process using heat and pressure, and an image is formed. Then, the sheet P on which the image is formed is discharged from the sheet discharge unit T of the image forming apparatus 1 by the transport roll 114 and is transported to the sheet post-processing apparatus 2 connected to the image forming apparatus 1.

The sheet post-processing apparatus 2 is disposed on the downstream side of the paper discharge unit T of the image forming apparatus 1 and performs post-processing such as punching and binding on the paper P on which the image is formed.
FIG. 2 is a diagram illustrating a configuration of the sheet post-processing apparatus 2 according to the present embodiment. As shown in FIG. 2, the sheet post-processing apparatus 2 includes a transport unit 21 connected to the paper discharge unit T of the image forming apparatus 1 and a predetermined process for the paper P taken into the transport unit 21. And a sheet processing control unit 23 that controls each mechanism unit of the sheet post-processing apparatus 2. The paper processing control unit 23 is connected to the main body control unit 106 (see FIG. 1) via a signal line (not shown), and transmits and receives control signals and the like. In the sheet post-processing apparatus 2 in FIG. 1, the sheet processing control unit 23 is provided in the casing of the finisher unit 22, but the sheet processing control unit 23 may be provided in the casing of the image forming apparatus 1. Further, the main body control unit 106 of the image forming apparatus 1 may be configured to include the control function of the paper processing control unit 23.

  In the transport unit 21 of the sheet post-processing apparatus 2, a punch function unit 30 that performs punching (punching) such as 2 holes or 4 holes, and the paper P after image formation by the image forming apparatus 1 is used as the finisher unit 22. A plurality of transport rolls 211 that are transported toward the front are provided.

  On the other hand, in the finisher unit 22, a sheet stacking unit 60 (an example of a recording material stacking unit) that stacks a required number of sheets P to generate a sheet bundle P, and staples (end binding) at the end of the sheet bundle P. A first binding function unit 50 (an example of a pre-conveying binding mechanism) to be executed is provided. The finisher unit 22 is provided on the downstream side of the sheet stacking unit 60 in the movement direction of the sheet bundle P, and a second binding function unit 40 (for binding the end of the sheet bundle P by a method other than staple binding) ( An example of a binding mechanism and a recording material binding mechanism) is provided.

  Further, the finisher unit 22 is provided on the downstream side in the movement direction of the sheet bundle P with respect to the second binding function unit 40, and further conveys the sheet bundle P conveyed from the sheet stacking unit 60 toward the stacker unit 80. A roll 61 is provided. Furthermore, a movable roll 62 is provided that is swingable about the rotation shaft 62a as a movement center and is movable to a position retracted from the transport roll 61 and a position where the transport roll 61 is pressed. The stacker unit 80 is provided to move up and down according to the amount of the sheet bundle P to be held.

FIG. 3 is an enlarged view of the finisher unit 22. FIG. 4 is a view of the second binding function unit 40 viewed from the direction of arrow A in FIG. The finisher unit 22 will be further described with reference to FIGS. 3 and 4.
As shown in FIG. 3, the second binding function unit 40 is provided on one side of the conveyance path of the sheet bundle P and advances toward one surface of the sheet bundle P to press the sheet bundle P. And a second pressing member 42 disposed at a position opposite to the first pressing member 41 and pressing the other surface of the sheet bundle P. The second binding function unit 40 includes a sheet sensor 47 that detects the end of the sheet bundle P on the upstream side in the transport direction of the sheet bundle P with respect to the first pressing member 41 and the second pressing member 42.

  Here, the 1st press member 41 is provided with the base 451 formed in the rectangular parallelepiped shape, as shown in FIG. The first pressing member 41 includes a tooth portion 453 in which a plurality of protrusions 452 are formed on the lower surface of the base portion 451. Similarly to the first pressing member 41, the second pressing member 42 includes a base portion 461 formed in a rectangular parallelepiped shape. The second pressing member 42 includes a tooth portion 463 in which a plurality of protrusions 462 are formed on the upper surface of the base portion 461.

  Here, in the present embodiment, the first pressing member 41 advances toward the second pressing member 42 by a driving mechanism (not shown) provided with a cam, a motor, and the like. As a result, the first pressing member 41 and the second pressing member 42 approach each other and press the sheet bundle P from one surface side and the other surface side of the sheet bundle P. At this time, since the tooth portions 453 and 463 are respectively formed on the first pressing member 41 and the second pressing member 42, irregularities are formed on the sheet bundle P. At this time, the fibers constituting the paper P are entangled between the paper P and another paper P adjacent to the paper P. In other words, a predetermined portion of the sheet bundle P is sandwiched between the first pressing member 41 and the second pressing member 42, and the sandwiched portion is deformed. As a result, the adjacent sheets P stick to each other, and a sheet bundle P composed of a plurality of sheets P is completed.

Next, a series of post-processing operations of the paper P performed by the sheet post-processing apparatus 2 will be described.
In the sheet post-processing device 2, the main body control unit 106 outputs an instruction signal to the post-processing for the paper P after the image is formed by the image forming device 1 to the paper processing control unit 23. Then, various post-processing for the paper P is executed. Here, a case will be described in which an instruction signal for executing post-processing on the paper P is output from the main body control unit 106.

  First, the paper P after the image formation by the image forming apparatus 1 is carried into the transport unit 21 of the sheet post-processing apparatus 2. In the transport unit 21, punching by the punch function unit 30 is performed in accordance with an instruction signal from the paper processing control unit 23, and then the paper P is sent to the finisher unit 22 by the transport roll 211. When there is no punching instruction from the paper processing control unit 23, the paper P is sent to the finisher unit 22 by the transport roll 211 as it is without being punched by the punch function unit 30.

  The paper P sent to the finisher unit 22 is conveyed to the paper stacking unit 60. More specifically, the paper P is transported to above the paper stacking unit 60 and then drops onto the paper stacking unit 60. Thereafter, the paper P slides on the paper stacking unit 60 according to the inclination angle given to the paper stacking unit 60. Then, the rear end portion of the paper P hits a paper restricting portion 64 (an example of a restricting portion) that is provided at the end portion of the paper accumulating portion 60 and extends upward from the bottom plate 67 (see FIG. 3) of the paper accumulating portion 60. Thereby, the paper P stops moving. As a result, a sheet bundle P in which the rear ends of the sheets P are aligned is formed on the sheet stacking unit 60. In this embodiment, in addition to the inclination angle given to the paper stacking unit 60, a rotating paddle 63 (see FIG. 3) that moves the paper P toward the paper regulating unit 64 of the paper stacking unit 60 is disposed. . Here, the upper surface of the bottom plate 67 can be regarded as a support surface for supporting the paper P from below.

  Although not described above, at both ends in the width direction of the sheet stacking unit 60, a sheet width position alignment mechanism 65 that aligns the position in the width direction of the sheet bundle P is provided as shown in FIG. Thereby, when the paper P is stacked on the paper stacking unit 60, the position in the width direction of the paper P (paper bundle P) is also aligned. As a result, the sheet bundle P subjected to the edge alignment process is generated on the sheet stacking unit 60. Thereafter, when the staple processing instruction signal is output from the paper processing control unit 23 (when the staple binding is selected by the user), the first binding function unit 50 causes the staple to the end portion of the paper bundle P to be stapled. Binding is performed.

FIG. 5 is a diagram illustrating a state in which the first binding function unit 50 executes staple binding (end binding) at the end of the sheet bundle P, and illustrates a state in which the sheet stacking unit 60 is viewed from above. .
In the first binding function unit 50, a staple head 51 that binds the sheet bundle P with metal staples (U-shaped needles) is provided so as to be movable along the sheet regulation unit 64 of the sheet stacking unit 60.

  Then, as shown in FIG. 5, according to the instruction signal from the paper processing control unit 23, for example, two points (positions (A) and (B) in FIG. 5) located at different locations in the width direction of the sheet bundle P. Then, a binding process (two-point end binding process) is performed. Further, for example, binding processing (one-point end binding) is performed on one end (corner portion of the sheet bundle P) (the position (C) in FIG. 5). The staple head 51 is linearly moved between the (A) position and the (B) position. However, the staple head 51 is, for example, 45 ° between the (A) position and the (C) position. Move with rotation.

Next, the binding process performed by the second binding function unit 40 will be described.
6-7 is a figure for demonstrating the binding process by the 2nd binding function part 40. FIG.
When an instruction signal for binding processing by the second binding function unit 40 is output from the sheet processing control unit 23 (when a binding process other than staple binding is selected by the user), the second binding function unit 40 Then, the binding process for the end of the sheet bundle P is executed. In this case, first, as illustrated in FIG. 6A, a plurality of sheets P are stacked on the sheet stacking unit 60, and a sheet bundle P is generated on the sheet stacking unit 60. Note that the sheet bundle P is generated by performing sheet alignment by the sheet regulating unit 64 and the sheet width position aligning mechanism 65, as described above.

  Next, as illustrated in FIG. 6B, the sheet bundle P is conveyed toward the second binding function unit 40. In the present embodiment, the sheet bundle P is conveyed to the second binding function unit 40 by using the sheet stacking unit 60. More specifically, this is performed by using a part of the sheet regulating unit 64 provided in the sheet stacking unit 60. More specifically, in the present embodiment, a part of the sheet regulating unit 64 is provided so as to be movable, and a motor and a belt mechanism (not shown) for moving a part of the sheet regulating unit 64 are provided. In this embodiment, the sheet bundle P is conveyed by sliding a part of the sheet regulating unit 64 using the motor and the belt mechanism (an example of a conveying unit). As a result, the sheet bundle P moves toward the second binding function unit 40 as shown in FIG.

  In the present embodiment, the movable roll 62 is pressed against the transport roll 61 as shown in FIG. 6B after a predetermined time has elapsed since the leading end of the sheet bundle P was detected by the sheet sensor 47. Move to position. Further, the rotation of the transport roll 61 is started. As a result, the sheet bundle P is further conveyed downstream by the conveyance roll 61 and the movable roll 62.

  Thereafter, as shown in FIG. 7A, when the rear end portion of the sheet bundle P passes through the paper sensor 47 and the rear end portion is detected by the paper sensor 47, based on an instruction from the paper processing control unit 23. Then, the rotation of the transport roll 61 is stopped, and the transport of the sheet bundle P is stopped. At this time, the rear end portion of the sheet bundle P is positioned between the first pressing member 41 and the second pressing member 42. Thereafter, based on an instruction from the sheet processing control unit 23, the first pressing member 41 advances toward the second pressing member 42, whereby the binding process for the rear end portion of the sheet bundle P is executed.

  Here, in the present embodiment, as shown in FIG. 7A, the second binding function unit 40 is located downstream of the arrival position of the leading end S of the paper P that is newly conveyed to the paper stacking unit 60. Is provided. More specifically, in the present embodiment, when the paper P falls on the paper stacking unit 60, the leading end of the paper P reaches the side of the paper stacking unit 60 where the second binding function unit 40 is provided. . Here, in the present embodiment, the second binding function unit 40 is provided on the downstream side of the arrival position of the leading end of the sheet P when the maximum size sheet P that can be transported by the image forming system falls. ing.

  More specifically, in the present embodiment, the second binding function unit 40 is provided on the downstream side of the front end portion of the sheet P that has been transported in the sheet stacking unit 60. In addition, in the image forming system according to the present embodiment, the new paper P that has been transported to the paper stacking unit 60 does not come into contact with the paper bundle P that is being bound by the second binding function unit 40. ing. In addition, in the present embodiment, the rear end portion of the sheet bundle P on which the binding process is performed by the second binding function unit 40 is positioned downstream of the arrival position of the leading end portion of the new sheet P that has been conveyed. is doing.

  More specifically, in the present embodiment, a new sheet P that has been conveyed to the sheet stacking unit 60 does not reach the second binding function unit 40. More specifically, when a new sheet P conveyed to the sheet stacking unit 60 is dropped onto the sheet stacking unit 60, the second binding function unit 40 performs binding processing on the sheet bundle P or the second binding function unit. 40 so that it is not inhibited. For this reason, in the present embodiment, it is possible to supply new paper P to the paper stacking unit 60 even if the binding processing by the second binding function unit 40 is performed. In this case, even when the binding process by the second binding function unit 40 is performed, a new sheet bundle P can be generated, and the first binding function unit 50 can staple.

  Note that the second binding function unit 40 can also be provided upstream of the position shown in FIG. In other words, if the second binding function unit 40 is provided on the downstream side of the position where the leading edge of the paper when the minimum size paper that can be conveyed by the image forming system falls, the second binding is provided. Even if the binding process is performed by the function unit 40, a new sheet P can be supplied to the sheet stacking unit 60. In this case, the width dimension and height dimension of the image forming system can be reduced. In this manner, when a large-sized sheet P is newly conveyed, the sheet P is discharged to the sheet stacking unit 60 after the sheet bundle P is discharged from the second binding function unit 40. Need arises. However, when a small-size sheet P is conveyed, the sheet P can be discharged (supplied) to the sheet stacking unit 60 without waiting for the discharge of the sheet bundle P from the second binding function unit 40.

  Here, FIG. 7B shows a state after the binding process by the second binding function unit 40 is completed. After the binding process by the second binding function unit 40 is completed, the first pressing member 41 is moved away from the second pressing member 42 as shown in FIG. Next, driving of the transport roll 61 is started. Thereby, the sheet bundle P is conveyed toward the stacker unit 80 (see FIG. 2). Thereafter, the movable roll 62 is withdrawn from the transport roll 61 and waits for transport of a new sheet bundle P.

  In the above description, the sheet bundle P is conveyed to the second binding function unit 40 by sliding and moving a part of the sheet regulating unit 64. For example, a belt member (not shown) that circulates or a rotating roll member is used. The sheet bundle P can be conveyed to the second binding function unit 40 by pressing against the upper surface of the sheet bundle P. In the case of such an aspect, when the paper P is stacked on the paper stacking unit 60, the belt member and the roll-shaped member are retracted to a position where they do not interfere with the paper P.

  As described above, when the sheet bundle P is transported by a belt member or a roll-shaped member, the sheet P may be displaced in the sheet bundle P. Further, as shown in FIG. 6B, when the sheet bundle P is transported to the downstream side using the transport roll 61 and the movable roll 62, the sheet P may be displaced in the sheet bundle P. is there. When the binding process by the second binding function unit 40 is performed with such a shift occurring, a sheet bundle P that is not aligned is generated. For this reason, in the present embodiment, the paper sensor 47 is provided as described above.

  For example, when the trailing edge of the sheet bundle P cannot be detected within a predetermined time after the leading edge of the sheet bundle P is detected by the sheet sensor 47, the sheet P is displaced in the sheet bundle P. Judgment can be made. Further, for example, the paper sensor 47 is configured by a sensor that detects the thickness of the paper bundle P, and when the thickness is smaller than a predetermined thickness, it is determined that the paper P has shifted in the paper bundle P. it can. When it is detected that the sheet P has shifted, for example, the sheet bundle P can be discharged to the stacker unit 80 (see FIG. 2) without executing the binding process by the second binding function unit 40. Further, for example, the conveyance of the sheet bundle P can be stopped, and the user can be notified that the binding process is not executed through a UI (User Interface) (not shown).

  In the above description, the case where the sheet bundle P is sandwiched from one side and the other side and the binding process is performed on the sheet bundle P by deforming the sandwiched portion is described. It can also be performed by a technique. For example, the binding process can be performed by applying an adhesive to the end face of the sheet bundle P. Further, for example, in the process in which the paper P is conveyed toward the paper stacking unit 60, an adhesive is applied to each of the papers P, and a portion where the adhesive is applied is pressed by the second binding function unit 40, and the binding process is performed. Can also be done. Further, for example, the binding process can be performed by cutting and raising a part of the sheet bundle P and bending the cut and raised part.

  If the transport roll 61 and the movable roll 62 are arranged upstream of the second binding function unit 40 in the paper transport direction, the rear end portion of the sheet bundle P cannot be sent to the second binding function unit 40. For this reason, in the present embodiment, the transport roll 61 and the movable roll 62 are arranged on the downstream side in the paper transport direction from the second binding function section 40, and a part of the paper regulation section 64 is slid so The end portion is fed to the second binding function unit 40.

DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus, 2 ... Sheet post-processing apparatus, 40 ... 2nd binding function part, 47 ... Paper sensor, 50 ... 1st binding function part, 60 ... Paper stacking part, 64 ... Paper regulation part, 67 ... Bottom plate

Claims (8)

A recording material bundle having a support surface for supporting the recording material from below, the recording material being conveyed from the upstream side in the recording material conveyance direction and sent from the leading end side toward the support surface against the regulating portion A recording material stacking unit for generating
The recording material is located at the downstream side in the recording material transport direction from the arrival position of the leading end portion of the recording material when the recording material is fed toward the support surface, and is generated by the recording material accumulation unit from the recording material accumulation unit. A binding mechanism for binding the bundle of recording materials that have been conveyed;
A recording material processing apparatus comprising:   When the binding process of the recording material bundle by the binding mechanism is performed, the recording material bundle is arranged so that the rear end portion of the recording material bundle is located downstream of the arrival position in the recording material conveyance direction. The recording material processing apparatus according to claim 1.   The said binding mechanism is provided in the recording material conveyance direction downstream from the said arrival position of the front-end | tip part in the largest recording material which can be bound by the said recording material processing apparatus. 2. A recording material processing apparatus according to 1.   The recording material processing according to any one of claims 1 to 3, further comprising a detecting unit that detects a deviation generated between one recording material constituting the recording material bundle and another recording material. apparatus. An image forming apparatus for forming an image on a recording material;
A recording material processing apparatus that performs a predetermined process on the recording material on which an image is formed by the image forming apparatus,
The recording material processing apparatus comprises:
A recording material bundle having a support surface for supporting the recording material from below, the recording material being conveyed from the upstream side in the recording material conveyance direction and sent from the leading end side toward the support surface against the regulating portion A recording material stacking unit for generating
The recording material is located at the downstream side in the recording material transport direction from the arrival position of the leading end portion of the recording material when the recording material is fed toward the support surface, and is generated by the recording material accumulation unit from the recording material accumulation unit. A recording material binding mechanism for binding the conveyed recording material bundle;
An image forming system comprising:   6. The image forming system according to claim 5, wherein the recording material binding mechanism performs a binding process on a rear end portion of the recording material bundle. A transport unit that transports the recording material bundle generated by the recording material stacking unit toward the recording material binding mechanism;
7. The image forming system according to claim 5, wherein the transport unit transports the recording material bundle by moving at least a part of the restricting portion downstream in the recording material transport direction. The recording material processing apparatus further includes a pre-transport binding mechanism that binds the recording material bundle before being transported to the recording material binding mechanism,
One of the recording material binding mechanism and the pre-conveying binding mechanism performs a binding process using a metal needle, and the other binding mechanism performs a binding process without using a metal needle. Item 8. The image forming system according to any one of Items 5 to 7.

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