JP5556502B2 - Recording material processing apparatus and image forming apparatus - Google Patents

Description

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

  A plurality of binding means for performing binding processing on the sheet bundle are provided, and at least one binding means can be selected automatically or manually from the plurality of binding means, and post-processing is performed on the sheet bundle by the selected binding means. A post-processing method to be performed has been proposed (see, for example, Patent Document 1).

JP 2000-318918 A

  An object of the present invention is to suppress deformation of the recording material bundle that may occur when the support of the recording material bundle at the first binding position is released along with the movement of the binding mechanism, and the binding process at the second binding position is recorded. The object is to prevent the material bundle from being deformed.

The invention according to claim 1, after performing the binding processing on the recording medium bundle at a first binding position is a position for binding processing to the recording medium bundle in position for binding processing to the recording medium bundle there second moved to the binding position, a binding mechanism that performs the binding processing of pairs on the recording medium bundle performs the support of the recording material flux at the second stapling position, attached to the binding mechanism, the binding mechanism when the moves to the second stapling position from the first stapling position, the stapling mechanism protrudes to the first binding position side where the binding process has already been carried out by, the one of the recording material bundle second A support member that supports a portion located on the side of the first binding position from below, and when the binding mechanism moves from the first binding position to the second binding position, The recording material bundle is supported by the binding mechanism. While being performed, the first binding position side is supported by the protruding support member, and the portion of the recording material bundle positioned at the second binding position and the first binding position side are positioned. In the recording material processing apparatus, the binding process is performed at the second binding position by the binding mechanism in a state where the portion to be supported is supported from below .
According to a second aspect of the present invention, the binding mechanism is positioned on the end side of the recording material bundle after performing the binding process at the first binding position positioned on the center side of the recording material bundle. The binding member performs the binding process at the second binding position, and the support member protrudes toward the central portion when the binding mechanism moves from the central portion side to the end portion side of the recording material bundle. 2. The recording material processing apparatus according to claim 1, wherein the central portion side of the recording material bundle is supported from below.
According to a third aspect of the present invention, when the binding mechanism performs the binding process at the first binding position, the support member moves to the binding mechanism side by being abutted against a predetermined location. When the binding mechanism moves from the first binding position to the second binding position, the elastic member attached to the support member expands or contracts so that the protrusion of the support member is performed. The recording material processing apparatus according to claim 1, wherein the recording material processing apparatus is a recording material processing apparatus.
The invention according to claim 4 further includes a rotating member that rotates in a state of being pressed against the recording material bundle and conveys the recording material bundle subjected to the binding process by the binding mechanism, and the binding mechanism includes the binding member 4. The recording material processing according to claim 1, wherein the rotating member is pressed against the recording material bundle when moving from the first binding position to the second binding position. 5. Device.

According to a fifth aspect of the present invention, there is provided an image forming unit that forms an image on a recording material, a recording material bundle generating unit that stacks a recording material on which an image is formed by the image forming unit and generates a recording material bundle, and a recording After performing the binding process on the recording material bundle at the first binding position where the binding process is performed on the material bundle, the recording material bundle is moved to the second binding position where the binding process is performed on the recording material bundle. , a binding mechanism that performs the binding processing of pairs on the recording medium bundle performs the support of the recording material flux at the second stapling position, attached to the binding mechanism, the binding mechanism from the first stapling position When moving to the second binding position , the portion that protrudes to the first binding position side where the binding processing by the binding mechanism has already been performed, and is located on the first binding position side of the recording material bundle and a support member for supporting from below, the When the binding mechanism moves from the first binding position to the second binding position, the recording material bundle at the second binding position is supported by the binding mechanism, and the protruding support member supports the recording material bundle. In the state where the first binding position side is supported, and the part of the recording material bundle that is located at the second binding position and the part that is located at the first binding position side are supported from below. In the image forming apparatus, a binding process is performed at the second binding position by the binding mechanism .
According to a sixth aspect of the present invention, the binding mechanism performs the binding process at the first binding position located on the center side of the recording material bundle, and then one end side of the recording material bundle. The support member performs the binding process at the second binding position located at the center of the recording material bundle when the binding mechanism moves from the central part side to the one end part side of the recording material bundle. The recording material bundle is projected from the lower side, and the central portion side of the recording material bundle is supported from below, and after the binding process is performed on the recording material bundle at the third binding position located on the central portion side of the recording material bundle, the one side A second binding mechanism that performs binding processing on the recording material bundle at a fourth binding position that is located on the other end side opposite to the end side, and is attached to the second binding mechanism. The second binding mechanism moves from the center side of the recording material bundle to the other end side. A further image forming apparatus according to claim 5, characterized in that it comprises a second support member for supporting the central portion of the projecting the central portion the recording medium bundle from below, to.
According to the seventh aspect of the present invention, the binding mechanism moves from the one side portion side to the central portion side, and the second binding mechanism moves from the other side portion side to the central portion side. The support member is retracted to the binding mechanism side when the support member and the second support member abut, and the second support member is retracted to the second binding mechanism side. 6. The image forming apparatus according to 6.
According to an eighth aspect of the present invention, when the recording material bundle generating unit generates the recording material bundle, the recording material bundle is generated by the image forming unit and the recording material that is sequentially fed in a predetermined direction is preliminarily stored By further moving the recording material in a direction opposite to the determined direction and abutting the end portion of the recording material against the abutting portion, the end portion is aligned, and the binding mechanism is 8. The recording material bundle according to claim 5, wherein when the recording material bundle is generated, the recording material fed out is disposed at a position deviating from a movement path when moving to the abutting portion. The image forming apparatus described.
According to a ninth aspect of the present invention, the recording material bundle generating means includes a recording material support surface that has an end on the downstream side in the direction in which the recording material is fed and supports the fed recording material from below. The sent recording material reaches a position beyond the end of the recording material support surface, and the support member supports the recording material in the feeding direction of the recording material when the recording material is sent. 9. The image forming apparatus according to claim 5, wherein the image forming apparatus is located on a downstream side of the end portion of the surface and supports a portion of the recording material beyond the end portion from below. is there.

According to the first aspect of the present invention, the recording material bundle that can be generated when the support of the recording material bundle at the first binding position is released along with the movement of the binding mechanism, as compared with the case where this configuration is not provided. And the binding process at the second binding position is suppressed from being performed in a state where the recording material bundle is deformed.
According to the second aspect of the present invention, the central portion of the recording material bundle is suppressed from being displaced downward as compared with the case where the present configuration is not provided, and the binding process at the second binding position is performed. Is prevented from being deformed.
According to the invention of claim 3, the support member can be projected without separately providing a drive source such as a motor.
According to the invention of claim 4, it is possible to suppress displacement of the recording material bundle that may occur when the binding mechanism moves from the first binding position to the second binding position.

According to the fifth aspect of the present invention, the recording material bundle that can be generated when the support of the recording material bundle at the first binding position is released along with the movement of the binding mechanism, as compared with the case where this configuration is not provided. And the binding process at the second binding position is suppressed from being performed in a state where the recording material bundle is deformed.
According to the sixth aspect of the present invention, the central portion of the recording material bundle is suppressed from being displaced downward as compared with the case where the present configuration is not provided, and the second binding position and the fourth binding position are suppressed. It is suppressed that the binding process is performed in a state where the recording material bundle is deformed.
According to the invention of claim 7, it is possible to prevent the movement of the binding mechanism and the second binding mechanism from being restricted.
According to the eighth aspect of the present invention, as compared with the case where the present configuration is not provided, the recording material is more reliably moved to the abutting portion of the recording material, and the aligning process of the end portions of the recording material bundle is more reliably performed. To be done.
According to the ninth aspect of the invention, it is possible to suppress the bending of the recording material bundle as compared with the case where the present configuration is not provided.

1 is a schematic configuration diagram illustrating an image forming system to which the exemplary embodiment is applied. It is a figure for demonstrating a binding apparatus. It is a figure for demonstrating a binding apparatus. It is the figure which showed the state of the 1st binding unit and the 2nd binding unit at the time of seeing from upper direction. It is a perspective view of the first binding unit and the like. It is a perspective view of the first binding unit and the like. It is a perspective view of the first binding unit and the like. It is a figure at the time of seeing the 1st binding unit from the front side of an image forming system. It is a figure at the time of seeing the 1st binding unit from the front side of an image forming system. It is a perspective view of the first binding unit and the like. FIG. 6 is a diagram illustrating a stacking state of a sheet bundle. It is a figure for demonstrating the binding part provided in the upper frame. It is a figure for demonstrating the other aspect of a binding process. It is a figure for demonstrating the other one form of a 1st binding unit and a 2nd binding unit.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a schematic configuration diagram illustrating an image forming system 1 to which the exemplary embodiment is applied. The image forming system 1 includes, for example, a predetermined process for an image forming apparatus 2 such as a printer or a copier that forms an image by an electrophotographic method, and a sheet S on which, for example, a toner image is formed by the image forming apparatus 2. A sheet processing apparatus 3 (an example of a recording material processing apparatus).

  The image forming apparatus 2 includes a sheet supply unit 6 that supplies a sheet S as an example of a recording material, and an image forming unit 5 that forms an image on the sheet S supplied from the sheet supply unit 6 by an electrophotographic method. . Note that the image forming unit 5 can also form an image by an inkjet method or the like. The image forming apparatus 2 also includes a sheet reversing device 7 that reverses the surface of the sheet S on which an image is formed by the image forming unit 5 and a discharge roll 9 that discharges the sheet S on which the image is formed. Further, the image forming apparatus 2 includes a user interface 90 that receives information from the user. Here, the sheet supply unit 6 includes a first sheet stacking unit 61 and a second sheet stacking unit 62 on which the sheets S are stacked. The paper supply unit 6 also transports the paper S stacked on the first paper stacking unit 61 toward the image forming unit 5, and the paper S stacked on the second paper stacking unit 62. A transport roll 66 is provided for transporting toward the head.

  The paper processing device 3 includes a transport device 10 that transports the paper S discharged from the image forming device 2, a paper stacking unit 35 on which the paper S transported by the transport device 10 is stacked, and a stapler that binds an end of the paper S. 40 and the like. In addition, the sheet processing apparatus 3 includes a control unit 80 that controls the entire image forming system 1.

  The conveyance device 10 of the paper processing apparatus 3 is configured to receive an inlet roll 11 that is a pair of rolls that receive the paper S discharged via the discharge roll 9 of the image forming apparatus 2 and the paper S received by the inlet roll 11. And a puncher 12 for drilling as necessary. Further, the transport device 10 includes a first transport roll 13, which is a pair of rolls that transport the paper S downstream, and a pair of rolls that transport the paper S toward the main body 30 further downstream of the puncher 12. And a second transport roll 14.

  The main body 30 of the sheet processing apparatus 3 includes an apparatus frame 36 formed in a box shape. In addition, the main body 30 includes a receiving roll 31 that is a pair of rolls that receive the paper S from the transport device 10. The main body unit 30 includes a sheet stacking unit 35 provided on the downstream side of the receiving roll 31 on which the sheet S is stacked, and an exit roll 34 that is a pair of rolls that discharge the sheet S toward the sheet stacking unit 35. ing. The main body 30 is rotated in the clockwise direction in the drawing and is transported by the exit roll 34 and is transported from the upper side while sliding on the paper stacking section 35 toward the end guide 35B of the paper stacking section 35. It has. Here, the paddle 37 will be described in detail. The paddle 37 moves the sheet S in a direction opposite to the feed-out direction in which the exit roll 34 feeds the sheet S, so that the rear end of the sheet S is brought into contact with the end guide 35B (abutment). Part example). Thereby, in this embodiment, the edge alignment process of the paper S is performed. Further, the main body 30 includes a tamper 38 that is provided to face each of the one side and the other side of the paper S and presses the paper S so as to sandwich the paper S and aligns the paper S. .

  Further, the main body 30 is provided so as to be movable in a direction approaching the paper stacking unit 35 and in a direction away from the paper stacking unit 35, and is provided so as to be rotatable. An eject roll 39 for discharging the sheet bundle T (which may be referred to as “sheet bundle T”) is provided. The eject roll 39 as an example of a conveying member is retracted to a position away from the paper stacking unit 35 when the paper S is stacked on the paper stacking unit 35. The eject roll 39 approaches the sheet bundle T and presses the sheet bundle T in the thickness direction of the sheet bundle T when discharging the sheet bundle T (an example of the recording material bundle) from the sheet stacking unit 35. Thereafter, the eject roll 39 rotates to convey the sheet bundle T downstream. Further, the main body 30 has a stapler 40 that binds the end of the sheet bundle T on the sheet stacking section 35 (the rear end in the transport direction of the sheet bundle T) using a staple. Here, the sheet stacking unit 35, the paddle 37, and the like can be regarded as a recording material bundle generating unit that generates a recording material bundle.

  The main body 30 also includes an opening 69 used for discharging the sheet bundle T conveyed by the eject roll 39 on the side wall of the apparatus frame 36. In addition, the main body 30 includes a binding device 500 that performs a binding process without using a staple needle on the leading end portion of the sheet bundle T conveyed by the eject roll 39 (the leading end portion in the conveying direction of the sheet bundle T). . The binding device 500 is configured separately from the device frame 36 and is detachable from the device frame 36. The main body 30 also includes a sheet bundle stacking unit 70 on which the sheet bundle T subjected to the binding process by the stapler 40 and the sheet bundle T subjected to the binding process performed by the binding device 500 are stacked. Here, the sheet bundle stacking unit 70 is lowered as the sheet bundle T is stacked. When switching from the binding process by the stapler 40 to the binding process by the binding apparatus 500, or when switching from the binding process by the binding apparatus 500 to the binding process by the stapler 40, the image data is rotated 180 ° and formed on the paper S. The image to be rotated is rotated 180 °.

Here, the binding device 500 will be described in detail.
2 and 3 are diagrams for explaining the binding device 500. FIG. 2 is a diagram when the binding device 500 is viewed from the front side of the image forming system 1, and FIG. 3 is a diagram when the binding device 500 is viewed from above the image forming system 1. In FIG. 3, the device frame 530 (described later) and the upper frame 511 (described later) are not shown.

  As illustrated in FIG. 2, the binding device 500 includes a device frame 530 that is formed in a box shape and is disposed along a direction (depth direction of the image forming system 1) perpendicular to the conveyance direction of the sheet bundle T. Yes. Although illustration is omitted, in order to allow the sheet bundle T placed on the rotating plate 513 (described later) to drop onto the sheet bundle stacking section 70, the central portion of the apparatus frame 530 and the apparatus frame 530 are arranged in the longitudinal direction. The lower part is in a released state.

  As shown in FIG. 3, the binding device 500 is supported by the device frame 530 and is movably provided along a direction (depth direction of the image forming system 1) perpendicular to the conveyance direction of the paper bundle T. A first binding unit 510 that binds the center of T and one end of the sheet bundle T is provided. Similarly, a second binding that is supported by the apparatus frame 530 and is movable along a direction orthogonal to the conveyance direction of the sheet bundle T and binds the center portion of the sheet bundle T and the other end portion of the sheet bundle T. A unit 520 is included. In FIG. 3, the device frame 530 shown in FIG. 2 is not shown.

  Further, the binding device 500 includes a motor M (see FIG. 3) and a guide (not shown) and a moving mechanism (not shown) that moves the first binding unit 510 and the second binding unit 520 along the orthogonal direction. Yes. In the present embodiment, two motors M for moving the first binding unit 510 and the second binding unit 520 are provided corresponding to each of the first binding unit 510 and the second binding unit 520. In addition, the 1st binding unit 510 and the 2nd binding unit 520 can also be moved by one (single) motor M by using a rack or a pinion.

  The first binding unit 510 and the second binding unit 520 are configured similarly. Here, the first binding unit 510 will be described as an example. As shown in FIG. 2, the first binding unit 510 is arranged with a gap KG between the upper frame 511 and the upper frame 511. A lower frame 512 disposed under the frame 511. The first binding unit 510 is provided with a rotating plate 513 that is attached to the lower frame 512 and rotates about a predetermined axis (described later).

  Here, inside the upper frame 511, as shown in FIG. 2, a moving frame 511A provided to be movable toward the lower frame 512 and movably away from the lower frame 512, a motor, a cam, etc. And a moving mechanism (not shown) for moving the moving frame 511A is provided. Further, in the moving frame 511A, when the moving frame 511A moves toward the lower frame 512, when the protruding member 511B protrudes into the gap KG and the protruding member 511B hits the lower frame 512, the protruding member 511B shrinks. A coil spring KS is provided to prevent this. The moving frame 511A has a punching member 505 (details will be described later), a binding unit 511C that performs binding processing on the sheet bundle T, a drive mechanism (not shown) configured by a motor, a cam, and the like to drive the punching member 505 and the like. Is provided. Here, the binding portion 511C and the drive mechanism (not shown) provided in the first binding unit 510 can be regarded as a binding mechanism, and the binding portion 511C (not shown) and the drive provided in the second binding unit 520 are driven. The mechanism (not shown) can be regarded as a second binding mechanism.

  Next, the lower frame 512 will be described. As shown in FIG. 3, the lower frame 512 is provided with a hole portion 512A into which the punching member 505 provided in the moving frame 511A is inserted. As shown in FIG. 2, the lower frame 512 is provided with a waste container portion 512B that is connected to the hole portion 512A and that stores waste generated in the binding process by the binding portion 511C. Further, as shown in FIG. 2, the lower frame 512 is provided with a protruding member 512C that protrudes from the upper surface of the lower frame 512 into the gap KG (see also FIG. 3).

  Here, in the present embodiment, as shown in FIG. 3, the rotating plate 513 can be stored inside the lower frame 512. In addition, the lower frame 512 is provided with an upper plate 512E and a lower plate (not shown), and a recess capable of accommodating the rotating plate 513 is formed between the upper plate 512E and the lower plate. In this embodiment, the rotating plate 513 is accommodated in the recess. Here, as shown in FIG. 3, the rotating plate 513 is provided so as to be rotatable about a shaft 512 </ b> D provided on the side close to the device frame 36. Moreover, in this embodiment, as shown in FIG. 3, the 1st coil spring KS1 which pulls the site | part located in the apparatus frame 36 side among the rotating plates 513 is provided. The first coil spring KS1 has one end fixed to a portion of the rotating plate 513 located on the device frame 36 side, and the other end fixed to the lower surface of the above-described upper plate 512E.

  Further, in the present embodiment, the long hole NA is provided on one end side, and the supporting member 512F that supports the shaft 512D described above at the other end, and the long plate NA of the supporting member 512F from the lower surface of the upper plate 512E. A protruding pin 512G that protrudes is provided. Further, a second coil spring KS2 is provided which is disposed in the long hole NA and is provided closer to the shaft 512D than the protruding pin 512G and moves the support member 512F in a direction away from the protruding pin 512G. Moreover, it has the guide G which guides the supporting member 512F which is provided in the both sides of the supporting member 512F, and moves.

  In the present embodiment, a first restricting portion 401 that is attached to the apparatus frame 530 (see FIG. 2) side and protrudes on the moving path of the rotating plate 513 to restrict the rotation of the rotating plate 513 is provided. Furthermore, a second restricting portion 402 that protrudes upward from a lower plate (not shown) of the lower frame 512 and restricts the rotation of the rotating plate 513 by striking a protrusion TK provided on the lower surface of the rotating plate 513. Is provided.

  Here, in this embodiment, the punching member 505 (see FIG. 2) provided in the binding portion 511C of the upper frame 511 enters the hole portion 512A provided in the lower frame 512. In such a configuration, the punching member 505 and the rotating plate 513 may interfere with each other. Therefore, in the present embodiment, as shown in FIG. 3, a notch 513 </ b> A is formed in the rotating plate 513 to prevent the punching member 505 and the rotating plate 513 from interfering with each other.

  Here, in the present embodiment, the binding process by the stapler 40 or the binding process by the binding device 500 is performed according to the user's selection. Hereinafter, the binding process performed by the stapler 40 and the binding process performed by the binding device 500 will be described with reference to FIGS. FIG. 4 is a diagram showing the state of the first binding unit 510 and the second binding unit 520 when viewed from above. 5 to 7 and 10 are perspective views of the first binding unit 510 and the like. 8 and 9 are views when the first binding unit 510 is viewed from the front side of the image forming system 1.

  First, the binding process performed by the stapler 40 will be described. When the binding process is performed by the stapler 40, first, the sheet bundle stacking unit 70 (see FIG. 1) is raised. Thereafter, the sheet S is discharged toward the sheet stacking unit 35 by the exit roll 34 (see FIG. 1), and a plurality of sheets S are stacked on the sheet stacking unit 35. Here, in this embodiment, when the paper S is discharged toward the paper stacking section 35, the leading end of the discharged paper S is the end of the paper stacking section 35 as shown in FIG. It protrudes from the device frame 36 beyond the part 35C (see FIG. 1). Further, even after the sheet S slides on the sheet stacking portion 35 and the rear end portion of the sheet S hits the end guide 35B (see FIG. 1), the leading end portion of the sheet S protrudes from the apparatus frame 36.

  Therefore, in this embodiment, as described above, the sheet bundle stacking unit 70 is raised, and the leading end portion of the sheet S protruding from the apparatus frame 36 is supported by the sheet bundle stacking unit 70. When the leading edge of the sheet S is thus supported by the sheet bundle stacking unit 70, the sheet S is stacked in a state of straddling both the sheet stacking unit 35 and the sheet bundle stacking unit 70. Here, in the case where not all the sheets S are accommodated in the apparatus frame 36 but the structure in which the leading end protrudes from the apparatus frame 36 as described above, the apparatus frame 36 becomes smaller and the area occupied by the image forming system 1 is increased. Smaller.

  Here, if the rotation plate 513 protrudes when the stapler 40 performs the binding process, the rotation plate 513 restricts the movement of the sheet S and the movement of the sheet bundle T described later. Further, there is a possibility that the rotating plate 513 interferes with the rising sheet bundle stacking unit 70. Therefore, in the present embodiment, when the binding process is performed by the stapler 40, as shown in FIG. 4A, the first binding unit 510 is retracted to the front side of the image forming system 1, and the second binding unit 520 is moved. The image forming system 1 is retracted to the rear side. In other words, the first binding unit 510 is retracted to one side of the movement path of the sheet S discharged by the exit roll 34 (see FIG. 1), and the second binding unit is disposed to the other side of the movement path of the sheet S. 520 is retracted. More specifically, the first binding unit 510 is retracted to one side of the movement path of the sheet bundle T (details will be described later) discharged from the sheet stacking unit 35 and moved to the other side of the movement path of the sheet bundle T. The second binding unit 520 is retracted.

  Here, in this embodiment, the sheets S are sequentially discharged to the sheet stacking section 35 by the exit roll 34. At this time, the side portion of the sheet S is pressed by the tamper 38 (see FIG. 1), and the width direction of the sheet S is reached. Alignment is performed. Further, the rear end portion of the sheet S is pressed against the end guide 35B by the rotationally driven paddle 37 (see FIG. 1), and alignment in the transport direction of the sheet S is performed. With these processes, a sheet bundle T composed of a plurality of sheets S and subjected to the edge alignment process is generated on the sheet stacking unit 35. Thereafter, a binding process by the stapler 40 is performed on the sheet bundle T. Next, the sheet bundle T is discharged to the sheet bundle stacking unit 70 by the eject roll 39. In the present embodiment, the sheet bundle stacking unit 70 is lowered as the sheet bundle T is stacked on the sheet bundle stacking unit 70.

Next, the binding process performed by the binding device 500 will be described.
When the binding process is performed by the binding device 500, the sheet bundle stacking unit 70 is lowered to a position where the first binding unit 510 and the second binding unit 520 and the sheet bundle stacking unit 70 do not interfere with each other. Thereafter, as indicated by an arrow A in FIG. 4B, the first binding unit 510 and the second binding unit 520 move in a direction approaching each other. In the present embodiment, with this movement, the restriction of the rotating plate 513 by the first restricting portion 401 (see FIG. 5A) is released. Thereby, the rotating plate 513 is rotated by the first coil spring KS1, and the rotating plate 513 protrudes from the lower frame 512 as shown in FIG.

  In this embodiment, the protrusions support the leading end portion (see FIG. 5B) of the sheet S protruding from the apparatus frame 36 by the rotating plate 513. In other words, a portion of the paper S that exceeds the end portion 35C (see FIG. 1) on the upper surface of the paper stacking portion 35 is supported by the rotating plate 513. More specifically, the upper surface (an example of the recording material support surface) of the sheet stacking unit 35 has an end 35C on the downstream side in the sheet S feeding direction. In the present embodiment, the sheet S sent out by the exit roll 34 reaches a location exceeding the end portion 35C. Further, in the present embodiment, when the paper S is sent out by the exit roll 34, the rotating plate 513 is positioned downstream of the end portion 35C in the paper S feeding direction. In the present embodiment, the portion of the paper S that exceeds the end portion 35C (the front end portion of the paper S) is supported by the rotating plate 513 from below.

  The rotating plate 513 rotated by the first coil spring KS1 has a second restricting portion 402 (see FIG. 3) in which a protrusion TK (see FIG. 5A) provided on the rotating plate 513 is provided on the lower frame 512. The rotation is stopped by hitting. In this embodiment, when the sheets S are sequentially conveyed by the exit roll 34, the rotation plate 513 is positioned on the movement path of the sheets S (below the movement path), as shown in FIG. In addition, the lower frame 512 is located at a location deviating from the movement path. Although not shown, the upper frame 511 is also located at a location deviating from the movement path.

  Here, when the sheets S are sequentially conveyed by the exit roll 34, the upper frame 511 and the lower frame 512 can be provided on the conveyance path of the sheet S. In this case, though depending on the size of the paper S, the paper S conveyed by the exit roll 34 once enters the gap KG (see FIG. 2) formed between the upper frame 511 and the lower frame 512. . Thereafter, the sheet S moves on the sheet stacking unit 35 and the rotating plate 513 toward the end guide 35B (see FIG. 1) of the sliding sheet stacking unit 35.

  Incidentally, the paper S may be curled (warped). When such paper S enters the gap KG, the paper S is caught on the lower surface of the upper frame 511 or the upper surface of the lower frame 512, The movement of the sheet S toward the end guide 35B may be restricted. In this case, the sheets S constituting the sheet bundle T are not uniform. In addition, when the paper S is already stacked on the paper stacking unit 35, the paper S conveyed by the exit roll 34 passes over the upper surface of the paper S already stacked on the paper stacking unit 35 and the rotating plate 513. After sliding, it enters the gap KG. By the way, when the new sheet S slides on the already stacked sheets S, the sheet S easily comes into contact with the lower surface of the upper frame 511 in the gap KG. Also in this case, the movement of the sheet S toward the end guide 35B is easily restricted.

  Therefore, in the present embodiment, as described above, when the paper S is conveyed by the exit roll 34, the upper frame 511 and the lower frame 512 are retracted from the movement path of the paper S. More specifically, the upper frame 511 and the lower frame 512 provided in the first binding unit 510 are retracted to one side of the movement path of the paper S, and the upper frame 511 and the second frame 520 provided in the second binding unit 520 The lower frame 512 is retracted to the other side of the movement path of the paper S.

  By the way, although the description is omitted above, the rotating plate 513 provided in the first binding unit 510 (same as the second binding unit 520 side) is formed in a triangular shape as shown in FIG. Further, in a state where the rotating plate 513 is positioned on the moving path of the sheet S (see FIG. 5B), the rotating plate 513 has a top portion protruding to the side where the second binding unit 520 is provided. 513B is provided. Further, the rotating plate 513 is provided with an edge portion 513C which is provided connected to the top portion 513B and approaches the lower frame 512 of the first binding unit 510 as the device frame 36 is approached.

  4B and 5B show the arrangement of the first binding unit 510 and the second binding unit 520 when the A4 sheet S is conveyed with the longer side leading. An example is shown. Here, for example, when the A4 sheet S is conveyed with the shorter side leading, as shown in FIG. 4C, the first binding unit 510 and the second binding unit 520 are Arranged closer. Although not described above, in the binding device 500 according to the present embodiment, as illustrated in FIG. 2, the rotating plate 513 is on the extension line (indicated by a broken line in the drawing) of the sheet stacking unit 35 and along the extension line. Is provided.

The binding process performed by the binding device 500 will be further described.
When the paper S is discharged to the paper stacking unit 35, the side of the paper S is pressed by the tamper 38 every time the paper S is discharged, as in the case of the binding process by the stapler 40. Alignment in the width direction is performed. Further, the sheet S is pressed against the end guide 35B by the rotationally driven paddle 37, and the sheet S is aligned in the transport direction. As a result, the sheet bundle T on which the edge alignment process has been performed is generated on the sheet stacking unit 35. Thereafter, the eject roll 39 comes into contact with the sheet bundle T on the sheet stacking section 35 and the eject roll 39 rotates by a predetermined rotation amount. As a result, the leading end of the sheet bundle T moves to a predetermined location.

  Next, for example, in the case where two binding processes are performed at the center of the sheet S (the center in the direction orthogonal to the transport direction of the sheet S), as shown in FIG. 510 and the second binding unit 520 are further approached. At this time, as shown in the figure, the rotating plate 513 of the first binding unit 510 and the rotating plate 513 of the second binding unit 520 are brought into contact with each other. Further, the rotating plate 513 rotates about the shaft 512D. As the first binding unit 510 and the second binding unit 520 further approach, the second coil spring KS2 provided in the support member 512F (see FIG. 3) contracts, and the rotating plate 513 slides. As a result, as shown in FIG. 6B, in each of the first binding unit 510 and the second binding unit 520, the rotating plate 513 moves to the lower frame 512 side, and the rotating plate 513 is placed in the lower frame 512. It will be in the stowed state. In addition, the rotating plate 513 of the first binding unit 510 is retracted to the lower frame 512 provided in the first binding unit 510 and is stored in the lower frame 512. Further, the rotating plate 513 of the second binding unit 520 is retracted to the lower frame 512 provided in the second binding unit 520 and stored in the lower frame 512.

  Here, when the rotation plate 513 provided in each of the first binding unit 510 and the second binding unit 520 cannot rotate, the rotation plate 513 of the first binding unit 510 and the rotation plate 513 of the second binding unit 520 are connected. It interferes and it becomes difficult for the first binding unit 510 and the second binding unit 520 to approach each other. In the present embodiment, since the rotation plate 513 is provided so as to be rotatable and slidable as described above, the first binding unit 510 and the second binding unit 520 can be approached, and the center of the sheet S can be moved. Binding processing is possible.

  Here, as described above, when the first binding unit 510 and the second binding unit 520 are brought close to each other, as shown in FIG. 7, in the gap KG formed between the upper frame 511 and the lower frame 512, The sheet bundle T enters. In the present embodiment, as described above, the protruding member 512C is provided to protrude from the upper surface of the lower frame 512 into the gap KG (see also FIG. 2). Therefore, in the present embodiment, when the sheet bundle T enters the gap KG, the sheet bundle T is lifted by the protruding member 512 </ b> C, and the sheet bundle T comes to float from the upper surface of the lower frame 512.

  Here, in this embodiment, a hole 512A is provided on the upper surface of the lower frame 512 (see also FIG. 3), and when the sheet bundle T enters the gap KG, the sheet bundle T is caught in the hole 512A. There is a fear. Therefore, in the present embodiment, the paper bundle T is lifted by the protruding member 512C, thereby suppressing the paper bundle T from being caught in the hole 512A. Note that the end 512J of the upper plate 512E of the lower frame 512 is chamfered so that the sheet bundle T enters the gap KG more smoothly.

  After the state shown in FIG. 6B, in this embodiment, as shown in FIG. 8A, the moving frame 511A provided in the upper frame 511 is moved toward the lower frame 512 by a predetermined amount. Let As a result, the protruding member 511B protrudes into the gap KG. Thereafter, in the present embodiment, the eject roll 39 (see FIG. 1) that has stopped rotating is rotated again. As a result, as shown in FIG. 8B, the leading end of the sheet bundle T abuts against the protruding member 511B, and the leading end side of the sheet bundle T is aligned. Next, as shown in FIG. 9, the moving frame 511 </ b> A is further lowered, and the leading end portion of the sheet bundle T is pressed by the lower surface of the moving frame 511 </ b> A and the upper surface of the lower frame 512. At this time, the protruding member 512 </ b> C protruding from the upper surface of the lower frame 512 is pressed by the moving frame 511 </ b> A via the sheet bundle T and retracts from the gap KG.

  Next, as shown in FIG. 9, the punching member 505 provided in the moving frame 511 </ b> A advances toward the sheet bundle T, and the binding process for the sheet bundle T is executed. Thus, the binding process at the center of the sheet bundle T is completed. More specifically, the binding process for the central portion of the sheet bundle T by the first binding unit 510 (binding process at the first binding position), and the binding process for the central portion of the sheet bundle T by the second binding unit 520. (Binding process at the third binding position) is completed. Next, in the present embodiment, the first binding unit 510 and the second binding unit 520 move away from each other, and each of the first binding unit 510 and the second binding unit 520 is in the state shown in FIG. That is, the first binding unit 510 is disposed at a position opposite to one end portion (second binding position) of the sheet bundle T, and the second binding unit 520 is disposed at the other end portion (fourth binding position) of the sheet bundle T. ) Are arranged at opposite positions.

  Note that when the first binding unit 510 and the second binding unit 520 move away from each other, the eject roll 39 is pressed against the sheet bundle T in this embodiment. For this reason, in the present embodiment, the displacement of the sheet bundle T that may occur with the movement of the first binding unit 510 and the second binding unit 520 is suppressed. Further, in the present embodiment, when the first binding unit 510 and the second binding unit 520 move in a direction away from each other, the rotating plate 513 provided in each of the first binding unit 510 and the second binding unit 520 extends. While being pressed by the second coil spring KS2 (an example of an elastic member), the end thereof is pulled by the first coil spring KS1 (another example of the elastic member) to be contracted, and as shown in FIG. It protrudes from the frame 512.

  In other words, the rotating plates 513 provided in each of the first binding unit 510 and the second binding unit 520 protrude toward the center of the sheet bundle T that has already undergone the binding process. For this reason, even if the first binding unit 510 and the second binding unit 520 move away from each other and the gap between the first binding unit 510 and the second binding unit 520 increases, the sheet bundle T is separated by the rotating plate 513. The sheet bundle T is supported from below and distortion (deformation) of the sheet bundle T is suppressed. Further, when the gap between the first binding unit 510 and the second binding unit 520 becomes large, the sheet bundle T may fall through the gap, but in the present embodiment, the fall is suppressed by the rotating plate 513. . Here, the rotation plate 513 provided in the first binding unit 510 can be regarded as a support member, and the rotation plate 513 provided in the second binding unit 520 can be regarded as a second support member.

  After that, the same operation as that shown in FIG. 9 is executed, and the binding process at the end portion (second binding position, fourth binding position) of the sheet bundle T is performed. As a result, in the present embodiment, the binding process is performed at a total of four locations. In the above description, the case where the binding process is performed at four locations is illustrated, but the binding process can be performed only at two locations in the center. Further, the binding process can be performed only on one end of the sheet bundle T, that is, on one place.

  Thereafter, in the present embodiment, the first binding unit 510 and the second binding unit 520 are further moved away from each other. As a result, the rotating plate 513 provided in each of the first binding unit 510 and the second binding unit 520 is pressed by the second coil spring KS2, and its end is pulled by the first coil spring KS1, and the lower part It protrudes from the frame 512. As a result, the first binding unit 510 and the second binding unit 520 are arranged in the state shown in FIG.

  In other words, the first binding unit 510 and the second binding unit 520 are arranged such that the rotating plate 513 is positioned below the sheet bundle T and the upper frame 511 and the lower frame 512 are positioned (retracted) to the side of the sheet bundle T. Be placed. Here, in the present embodiment, the sheet bundle T is transported by the eject roll 39 later. If the upper frame 511 and the lower frame 512 are positioned on the transport path of the sheet bundle T, the sheet bundle T is It strikes the base 511K (see FIG. 2) of the upper frame 511 and the conveyance of the sheet bundle T is hindered. Therefore, in the present embodiment, as described above, the upper frame 511 and the lower frame 512 are positioned on the side of the sheet bundle T.

  Thereafter, in the present embodiment, the eject roll 39 is rotated, and the sheet bundle T after the binding process is conveyed. More specifically, the sheet bundle T is conveyed until the rear end portion of the sheet bundle T passes through the opening 69 (see FIG. 1). As a result, the sheet bundle T is not supported by both the sheet stacking unit 35 and the rotating plate 513, but the sheet bundle T is supported by the rotating plate 513.

  Note that the rotating plate 513 in the present embodiment is inclined as in the case of the paper stacking unit 35. As a result, the sheet bundle T conveyed to the rotating plate 513 by the eject roll 39 may return to the sheet stacking unit 35. For this reason, in this embodiment, as shown in FIG. 2, a larger inclination is given to a portion of the rotating plate 513 located on the upstream side in the transport direction of the sheet bundle T. More specifically, with respect to the part located on the upstream side in the transport direction of the sheet bundle T of the rotating plate 513, the part located on the downstream side in the transport direction of the sheet bundle T or the central part in the transport direction of the sheet bundle T. The inclination which is larger than the inclination which is given to the part which does is given. More specifically, a portion of the rotating plate 513 located on the upstream side in the transport direction of the sheet bundle T is suspended. More specifically, as shown in FIG. 2, the end 513 </ b> T located on the upstream side of the rotation direction of the sheet bundle T in the rotating plate 513 is located below the opening 69. Further, the end portion 513T is positioned below an extension line (indicated by a broken line in the drawing) of the sheet stacking portion 35. As a result, in the present embodiment, the sheet bundle T placed on the rotating plate 513 is prevented from returning to the sheet stacking unit 35.

  After the sheet bundle T is conveyed to the rotating plate 513 by the eject roll 39, in the present embodiment, the first binding unit 510 and the second binding unit 520 are further moved in directions away from each other. Then, when the first binding unit 510 and the second binding unit 520 are further moved, the support of the sheet bundle T by the rotating plate 513 is released. As a result, the sheet bundle T falls downward and is stacked on the sheet bundle stacking unit 70.

  In the present embodiment, the rotating plate 513 is provided with an edge 513C (see FIG. 5B). As described above, the edge portion 513C approaches the lower frame 512 as it approaches the device frame 36. For this reason, in the state shown in FIG. 5B, the gap formed between the rotating plate 513 of the first binding unit 510 and the rotating plate 513 of the second binding unit 520 becomes larger as the apparatus frame 36 is approached. Become. In other words, a gap formed between the rotating plate 513 of the first binding unit 510 and the rotating plate 513 of the second binding unit 520 is directed toward the rear end portion side of the sheet bundle T placed on the rotating plate 513. It grows according to.

  More specifically, in the present embodiment, the gap between the rotating plate 513 of the first binding unit 510 and the rotating plate 513 of the second binding unit 520 at the location where the top portion 513B (see FIG. 5B) is provided. Is the smallest. In the present embodiment, the gap gradually increases from the portion where the top portion 513B is provided toward the device frame 36. Therefore, when the first binding unit 510 and the second binding unit 520 move away from each other and the sheet bundle T falls downward, the sheet bundle T falls from the rear end side of the sheet bundle T. In other words, the trailing end of the sheet bundle T reaches the sheet bundle stacking section 70 before the leading end side, and then the leading end reaches the sheet bundle stacking section 70.

  In this embodiment, the sheet bundle stacking unit 70 is lowered as the sheet bundle T is stacked on the sheet bundle stacking unit 70. Although not described above, as shown in FIG. 2, the lower frame 512 is provided with a first sensor S <b> 1 and a second sensor S <b> 2 that detect the sheet bundle T on the sheet bundle stacking unit 70. . In this embodiment, when the sheet bundle T is detected by either the first sensor S1 or the second sensor S2, the sheet bundle stacking unit 70 is lowered, and the first sensor S1 and the second sensor S2 are used. When the sheet bundle T is no longer detected, the sheet bundle stacking unit 70 is stopped. As a result, interference between the sheet bundle T stacked on the sheet bundle stacking unit 70 and the rotating plate 513 can be avoided. Further, when the binding process using the stapler 40 is performed, the sheet bundle T is prevented from being positioned above the opening 69 formed in the apparatus frame 36.

  Here, each of the first sensor S1 and the second sensor S2 includes a transmissive sensor, and a light emitting unit (not shown) attached to the lower frame 512 of the first binding unit 510 and the second binding unit. The light receiving part (not shown) attached to the lower frame 512 of 520 is comprised. In addition, the light emitting portion provided in each of the first sensor S1 and the second sensor S2 is provided in the lower frame 512 of the first binding unit 510, and is provided in each of the first sensor S1 and the second sensor S2. The light receiving unit is provided in the lower frame 512 of the second binding unit 520.

  Here, when the binding process is performed on the sheet bundle T, a convex portion is formed at the front end portion or the rear end portion of the sheet bundle T by a staple needle or a tongue portion described later. When the sheet bundle T on which such convex portions are formed is stacked on the sheet bundle stacking section 70, the stacking height of the sheet bundle T as shown in FIG. Therefore, the leading edge side and the trailing edge side of the sheet bundle T are different. FIG. 6A shows a state in which the sheet bundle T subjected to the binding process is stacked on the front end portion, and FIG. 9B illustrates the state where the sheet bundle T subjected to the binding process is stacked on the rear end portion. Indicates the state.

  Here, for example, the sheet bundle T on the sheet bundle stacking section 70 can be detected only by the first sensor S1 without providing the first sensor S1 and the second sensor S2, but in this case, the front end side of the sheet bundle T is used. However, there is a possibility that the lowering of the sheet bundle stacking unit 70 stops. In other words, there is a possibility that the lowering of the sheet bundle stacking unit 70 may stop although the leading end side of the sheet bundle T and the rotating plate 513 interfere with each other. Further, the sheet bundle T on the sheet bundle stacking unit 70 can be detected only by the second sensor S2, but in this case, the stacking height on the rear end side of the sheet bundle T is high. The descent of the sheet bundle stacking unit 70 may stop. In other words, there is a possibility that the lowering of the sheet bundle stacking unit 70 stops even though the rear end side of the sheet bundle T and the rotating plate 513 interfere with each other. For this reason, in the present embodiment, two sensors, a first sensor S1 for detecting the rear end side of the sheet bundle T and a second sensor S2 for detecting the leading end side of the sheet bundle T, are provided. When the sheet bundle T is no longer detected by the two sensors S2, the sheet bundle stacking unit 70 is stopped.

  Next, the binding portion 511C (see FIG. 2) provided on the upper frame 511 will be described in detail. FIG. 12 is a view for explaining the binding portion 511 </ b> C provided in the upper frame 511. In this figure, the lower frame 512 side is also displayed.

  As shown in FIG. 6A, the binding portion 511C provided on the upper frame 511 has two bases 501 and a base portion 503 arranged with a predetermined gap. In this embodiment, the sheet bundle T is bound by moving the base 503 closer to the base 501 (moving in the direction of arrow F1 in the figure). The base 501 has a protruding portion 506 that extends toward the base 503 and is formed integrally with the base 501. On the other hand, the lower frame 512 is provided with a bottom member 502 disposed to face the base 501. Two bottom members 502 are provided corresponding to the two bases 501 provided. Further, the hole 512A described above is formed in the lower frame 512 between the adjacent bottom members 502.

  The base 503 will be described in detail. The base 503 includes a blade 504 that cuts the sheet bundle T. The base 503 has the punching member 505 described above. Here, the punching member 505 forms a tongue 522 (see FIG. 12B) on the sheet bundle T, bends the tongue 522, and inserts the tongue 522 into the notch formed by the blade 504. . The blade 504 is formed of a rectangular plate-like member provided with one end fixed to the base portion 503 and extending toward a hole portion 512 </ b> A formed in the lower frame 512. Further, the blade 504 has a eye hole 504A provided through the blade 504, and further has a tip 504B whose width decreases as it approaches the lower frame 512.

  The punching member 505 is an L-shaped member having a bent portion. The punching member 505 has a main portion 505A on one end side and a sub-portion 505B on the other end side. The punching member 505 has a rotation shaft 505R at a location where the main portion 505A and the sub portion 505B intersect, and can be rotated around the rotation shaft 505R. More specifically, the main portion 505A can be inclined to the blade 504 side. A gap is provided between the sub part 505B and the base part 503 so that the punching member 505 can rotate.

  Here, the main portion 505A is disposed so as to extend toward the lower frame 512. Further, the main portion 505A has a blade portion 505C on the side opposite to the side where the rotating shaft 505R is provided, that is, the side where the base 501 is provided. The blade portion 505C has a shape that follows the shape of the tongue portion 522. In addition, the blade is not formed in the edge part located in the blade 504 side among the some edge parts formed in the blade part 505C. Therefore, one end 522A (see FIG. 5B) of the tongue 522 is connected to the sheet bundle T, and the tongue 522 and the sheet bundle T are in a continuous state. The main portion 505A has a protrusion 505D that protrudes toward the blade 504 on a side portion of the main portion 505A, specifically on a side facing the blade 504.

Here, the operation of the binding unit 511C will be described.
First, the base 503 approaches the base 501 by a cam driven by a motor (not shown), and the leading end 504B of the blade 504 passes through the sheet bundle T. Further, the punching member 505 penetrates the sheet bundle T when the blade portion 505C of the punching member 505 presses the sheet bundle T. As a result, the sheet bundle T is formed with a slit 521 and a tongue 522 having one end 522A connected to the sheet bundle T, as shown in FIG. When the base portion 503 is further lowered, the sub-portion 505B of the punching member 505 hits the protruding portion 506, and the punching member 505 is rotated clockwise in FIG. 12A around the rotation shaft 505R.

  As a result, the main portion 505 </ b> A is inclined toward the blade 504, and the protrusion 505 </ b> D of the punching member 505 approaches the blade 504. As a result, the protrusion 505D of the punching member 505 bends the tongue 522 and pushes the tongue 522 into the eye hole 504A of the blade 504 (see F2 in the figure). In FIG. 12C, the punching member 505 is not shown. Thereafter, the base 503 is moved away from the lower frame 512. That is, the base 503 is raised in the direction of arrow F3 in FIG. In this case, the tongue 522 is lifted while being caught in the eye hole 504A of the blade 504. Then, as shown in FIG. 12D, the tongue 522 is inserted into the slit 521. Thereby, the binding process by the binding unit 511C is completed. After the binding process is completed, a binding hole 523 into which a binding tool provided in a file, a binder, or the like is inserted is formed in the sheet bundle T at the location where the tongue 522 is punched (FIG. D)).

In the above description, the case where the binding process is performed by inserting the tongue portion 522 into the slit 521 is illustrated. However, the binding process for the sheet bundle T can also be performed by pressing the sheets S constituting the sheet bundle T together. Can do.
FIG. 13 is a diagram for explaining another aspect of the binding process. 2A is a perspective view showing the moving frame 511A and the lower frame 512, and FIG. 2B is a view showing the sheet bundle T after the binding process is performed.

  An upper surface pressing portion 511E for pressing the upper surface of the sheet bundle T is provided on the lower surface of the moving frame 511A. Further, a lower surface pressing portion 512H that presses the lower surface of the sheet bundle T is provided at a position facing the upper surface and the upper surface pressing portion 511E of the lower frame 512. The upper surface pressing portion 511E has irregularities on the surface facing the lower surface pressing portion 512H. The lower surface pressing portion 512H also has irregularities on the surface facing the upper surface pressing portion 511E.

  Here, in the present embodiment, when the sheet bundle T is sandwiched between the upper surface pressing portion 511E and the lower surface pressing portion 512H, the unevenness formed on each of the upper surface pressing portion 511E and the lower surface pressing portion 512H causes the same figure (B). As shown in FIG. 3, the sheet bundle T is also uneven. Further, when the sheet bundle T is sandwiched between the upper surface pressing portion 511E and the lower surface pressing portion 512H and the unevenness is formed in the sheet bundle T, the fibers constituting the sheet S are entangled between the adjacent sheets S. Become. As a result, a sheet bundle T composed of a plurality of sheets S and subjected to the binding process is generated.

Note that the first binding unit 510 and the second binding unit 520 described above can also be configured as follows.
FIG. 14 is a view for explaining another embodiment of the first binding unit 510 and the second binding unit 520. FIG. In addition, since the 1st binding unit 510 and the 2nd binding unit 520 are comprised similarly like the above, it demonstrates centering on the 1st binding unit 510. FIG. In FIG. 14, the upper frame 511 is not shown. Further, FIG. 14 shows a state when the first binding unit 510 is viewed from above. The same functions as those described above are denoted by the same reference numerals, and the description thereof is omitted here.

  In the present embodiment, the first binding unit 510 is configured so that the upper surface 512Y of the lower frame 512 and the upper surface of the rotating plate 513 are aligned in the height direction. More specifically, a step is formed on the upper surface of the lower frame 512, and the lower frame 512 is formed with a support surface 512N that is positioned below the upper surface 512Y and supports the rotating plate 513 from below. ing. In this embodiment, the rotating plate 513 is placed on the support surface 512N. In the present embodiment, the thickness of the rotating plate 513 is set so that the upper surface 512Y and the upper surface of the rotating plate 513 are aligned. Here, in the configuration of the present embodiment, when the first binding unit 510 and the second binding unit 520 approach each other, the sheet bundle T enters the gap KG (see FIG. 2) more smoothly.

  Note that a groove 512K for moving the protrusion TK provided on the lower surface of the rotating plate 513 is formed on the support surface 512N. In the present embodiment, the second restricting portion 402 that restricts the rotation of the rotating plate 513 is provided in the groove 512K. In the present embodiment, a protruding portion 513E protruding downward from the lower surface of the rotating plate 513 is provided, and the end of the first coil spring KS1 is attached to the protruding portion 513E. In the present embodiment, the lower frame 512 is formed with a notch 512M for avoiding interference between the protruding portion 513E and the lower frame 512. The lower frame 512 is formed with a notch 512P for avoiding interference between the shaft 512D and the lower frame 512.

DESCRIPTION OF SYMBOLS 1 ... Image forming system, 3 ... Paper processing apparatus, 5 ... Image forming part, 35 ... Paper stacking part, 35B ... End guide, 35C ... End part, 37 ... Paddle, 39 ... Eject roll, 510 ... 1st binding unit, 511C ... Binding section, 513 ... Rotating plate, 520 ... Second binding unit, KS1 ... First coil spring, KS2 ... Second coil spring, S ... Paper, T ... Paper bundle

Claims (9)

After performing the binding processing on the recording medium bundle at a first binding position is a position for binding processing to the recording medium bundle, moves to a second binding position is a position for binding processing to the recording medium bundle , a binding mechanism that performs the binding processing of pairs on the recording medium bundle performs the support of the recording material flux at the second stapling position,
When the binding mechanism is attached to the binding mechanism and moves from the first binding position to the second binding position, the binding mechanism projects toward the first binding position where the binding process has already been performed. a supporting member for supporting the site located on the first binding position side of the recording material bundle from below,
Equipped with a,
When the binding mechanism moves from the first binding position to the second binding position, the recording material bundle at the second binding position is supported by the binding mechanism, and the protruding support member supports the recording material bundle. In the state where the first binding position side is supported, and the part of the recording material bundle that is located at the second binding position and the part that is located at the first binding position side are supported from below. A recording material processing apparatus that performs a binding process at the second binding position by the binding mechanism . The binding mechanism performs the binding process at the first binding position positioned on the center side of the recording material bundle and then performs the binding process on the second binding position positioned on the end side of the recording material bundle. Perform the binding process,
The support member protrudes toward the central portion side when the binding mechanism moves from the central portion side to the end portion side of the recording material bundle, and supports the central portion side of the recording material bundle from below. The recording material processing apparatus according to claim 1, wherein: When the binding mechanism performs the binding process at the first binding position, the support member moves to the binding mechanism side by being abutted against a predetermined location;
When the binding mechanism moves from the first binding position to the second binding position, the protrusion of the support member is performed by extending or contracting an elastic member attached to the support member. The recording material processing apparatus according to claim 1 or 2. A rotating member that rotates in a state of being pressed against the recording material bundle and conveys the recording material bundle subjected to the binding process by the binding mechanism;
4. The rotating member is pressed against the recording material bundle when the binding mechanism moves from the first binding position to the second binding position. 5. The recording material processing apparatus described. An image forming unit for forming an image on a recording material;
A recording material bundle generating unit that stacks recording materials on which images are formed by the image forming unit and generates a recording material bundle;
Moving at a first binding position is a position for binding processing to the recording medium bundle after performing the binding processing on the recording medium bundle, the second binding position is a position for binding processing to the recording medium bundle a binding mechanism, and performs a binding processing that pair on the recording material bundle performs the support of the recording material flux at the second stapling position,
When the binding mechanism is attached to the binding mechanism and moves from the first binding position to the second binding position, the binding mechanism projects toward the first binding position where the binding process has already been performed. a supporting member for supporting the site located on the first binding position side of the recording material bundle from below,
Equipped with a,
When the binding mechanism moves from the first binding position to the second binding position, the recording material bundle at the second binding position is supported by the binding mechanism, and the protruding support member supports the recording material bundle. In the state where the first binding position side is supported, and the part of the recording material bundle that is located at the second binding position and the part that is located at the first binding position side are supported from below. An image forming apparatus in which a binding process is performed at the second binding position by the binding mechanism . The binding mechanism includes the second binding position positioned on one end side of the recording material bundle after the binding process is performed at the first binding position positioned on the center side of the recording material bundle. To perform the binding process,
The support member protrudes to the central portion side when the binding mechanism moves from the central portion side of the recording material bundle to the one end portion side, and supports the central portion side of the recording material bundle from below. ,
After performing the binding process on the recording material bundle at the third binding position located on the central portion side of the recording material bundle, the second one located on the other end side opposite to the one end side. A second binding mechanism that performs a binding process on the recording material bundle at a binding position of 4;
The second binding mechanism is attached to the second binding mechanism, and protrudes to the central portion side when the second binding mechanism moves from the central portion side to the other end portion side of the recording material bundle. A second support member that supports the center side from below;
The image forming apparatus according to claim 5, further comprising:   The binding member moves from the one side to the center, and the second binding mechanism moves from the other side to the center, thereby supporting the support member and the second support. The image forming apparatus according to claim 6, wherein when the member abuts, the support member is retracted to the binding mechanism side, and the second support member is retracted to the second binding mechanism side. When the recording material bundle generating unit generates the recording material bundle, an image is formed by the image forming unit, and the recording material sequentially sent in a predetermined direction is opposite to the predetermined direction. And further aligning the end of the recording material by abutting the end of the recording material against the abutting portion,
The binding mechanism is disposed at a location that is out of the movement path when the recording material bundle that has been sent moves to the abutting portion when the recording material bundle is generated by the recording material bundle generation unit. The image forming apparatus according to claim 5, wherein the image forming apparatus is an image forming apparatus. The recording material bundle generating means includes a recording material support surface that has an end on the downstream side in the direction in which the recording material is sent out and supports the fed recording material from below.
The fed recording material reaches a location exceeding the end of the recording material support surface,
When the recording material is sent out, the support member is located downstream of the end portion of the recording material support surface in the feeding direction of the recording material and exceeds the end portion of the recording material The image forming apparatus according to claim 5, wherein the image forming apparatus is supported from below.

Images