JP6167545B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to a sheet post-processing apparatus and an image forming apparatus including the sheet post-processing apparatus.

  As a paper bundle folding mechanism, as disclosed in Patent Document 1, there is a paper folding mechanism that folds a paper with a folding blade and a press plate for the purpose of cost reduction and size reduction. This device is a mechanism in which press plates are arranged on both sides of a folding blade that presses the saddle stitching position of a sheet bundle, and both press plates are closed by movement of a press pressure release cam. Then, after the folding blade presses the center of the sheet bundle, the press plate moves and is sandwiched and pressed by the tip of the press plate. This folds the paper.

  The mechanism disclosed in Patent Document 1 has a problem in that productivity is reduced because a sheet binding unit that binds a plurality of sheets and a sheet folding unit are separately mounted.

  SUMMARY An advantage of some aspects of the invention is that it provides a sheet post-processing apparatus capable of simultaneously folding and binding sheets and an image forming apparatus including the sheet post-processing apparatus.

A sheet post-processing apparatus according to the present invention is disposed on both sides of a sheet conveying unit that conveys sheets to a stacking unit, a sheet stacking unit that can stack a plurality of sheets, and the sheet conveying unit, and pressurizes a bundle of sheets. a pair of pressing means, press pressurization means for performing pressurization of said pressing means, provided in a part of said pressing means, a paper post-processing apparatus having a binding means, for binding the sheet by pressurization, the binding The means is disposed forward with respect to the conveying direction of the sheet bundle in the pressing means, and the binding means presses the pressing means and the binding means is configured to fold the sheet bundle. It is characterized in that the folding process and the binding process can be performed simultaneously by being pressurized toward the bundle .

  According to the present invention, when the sheet bundle is bound and folded into a booklet by the folding means, the folding process and the binding process can be performed at the same time, so that productivity can be improved.

Schematic explanatory diagram of a sheet bundle folding processing apparatus according to an embodiment of the present invention Overall view of clamp bundle transport unit The figure which expanded the dotted-line part H in FIG. Enlarged view of dotted line portion R in FIGS. Figure of another angle of FIG. Enlarged view of dotted line portion V in FIG. Enlarged view of dotted line portion V in FIG. Perspective view of press fold Side view of the press fold Configuration diagram with the press plate drive cam, folding blade drive cam, and side plate removed from FIG. The figure which looked at FIG. 10 from the side The figure which removed the movement plate from FIG. The figure which expanded the dotted-line part H of FIG. 12, and was seen from the side surface The figure which showed the inside of the press unit of FIG. Side view of FIG. Diagram showing the flow of press operation for folding a stack of paper The figure for demonstrating the principal part of Embodiment 1 of this invention Enlarged view of the needleless binding means of the press plate View of needleless binding means of press plate viewed from above The figure explaining the operation | movement flow of this embodiment The figure for demonstrating Embodiment 2 of this invention Enlarged view of the needleless binding means of the press plate View of the punching blade of the press plate and protrusion press as seen from above The figure for demonstrating Embodiment 3 of this invention The figure which shows the operation | movement flow of Embodiment 3. The figure which shows the time of the additional folding and binding operation | movement of Embodiment 4. The figure which shows the operation | movement flow of Embodiment 4.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The sheet post-processing apparatus according to the embodiment of the present invention is provided with needleless binding means in an existing sheet bundle folding mechanism, and simultaneously performs folding and binding of sheets. The sheet post-processing apparatus of the present embodiment folds a sheet bundle with a press plate that is a sheet folding unit, and binds the sheet bundle with a stapleless binding unit provided at a part of the press plate. The sheet folding unit binds the sheet. Have both. For this reason, when the sheet bundle is bound and folded into a booklet shape by the folding means, the folding process and the binding process can be performed at the same time, which increases productivity.
The present embodiment relates to an image forming apparatus such as a copying machine, a printer, a facsimile, and a multifunction machine of these, but is not limited to the illustrated embodiment.

<Embodiment 1>
FIG. 1 is a schematic explanatory view of a sheet bundle folding processing apparatus A according to an embodiment of the present invention.
The sheet folding processing apparatus A according to the present embodiment includes a sheet introduction path 1 and conveyance paths 2, 3, and 4. The introduction path 1 is a path for receiving the image-formed paper Z discharged from the image forming apparatus 100. The conveyance path 2 is a path for stacking the paper Z on the paper discharge tray 22. The transport path 3 is a path for intermediate stacking of sheets Z, and the transport path 4 is a path for transporting a sheet bundle to a paper folding unit.

The vicinity of the paper entrance will be described.
An inlet roller 10 and an inlet sensor 13 are arranged in the introduction path 1 to detect that the paper Z has been carried into the paper bundle folding processing device. A paper punching unit B is disposed downstream of the entrance roller 10, and transport rollers 11 and 12 are disposed downstream thereof, and the paper Z is transported to the transport path 3 through this. The proof discharge transport path 2 is a path for transporting the paper Z to the paper discharge tray 22.

  The sheet Z whose direction of travel has been changed by the branching claw 20 from the introduction path 1 is conveyed to the sheet discharge tray 22 by the discharge roller 21. During the shift and stack operations, paper discharge rollers 31 and 33 and a paper discharge sensor 35 are arranged in the conveyance path 3. In the sort mode, the transport roller 12 having a shift mechanism is moved by a predetermined amount in the direction perpendicular to the transport direction during transport by a driving unit (not shown). As a result, the paper Z is shifted by a certain amount, and is discharged to the paper discharge tray 32, which is a paper stacking portion, by the paper discharge rollers 33, and is sequentially stacked.

  The discharge port portion to the discharge tray 32 has a structure in which a sheet or a bundle of sheets is sandwiched and discharged by a discharge roller 33 and a discharge roller 31 that is a driven roller. This is a contact / separation operation of a discharge guide provided with a discharge roller 31 that is a driven roller with respect to the discharge roller 33, and selectively takes a closed state in which a sheet or a bundle of sheets can be pinched and discharged and an open state in which no discharge is held. After the paper shift operation is completed, the paper is nipped and discharged.

The vertical movement of the shift tray will be described.
A filler 34 is provided in the vicinity of the upper portion of the paper discharge port, and is freely pivoted at a position near the center of the paper Z when stacked. The tip of the filler 34 is in contact with the upper surface of the paper Z. In the vicinity of the base of the filler 34, an upper surface detection sensor (not shown) for detecting the height position of the tip of the filler 34 is provided. Thus, the sheet height of the stacked sheets Z is detected. As the sheet height increases due to an increase in the number of sheets deposited on the discharge tray 32, the upper surface detection sensor is turned on. Then, a control unit (not shown) controls drive means (not shown) that moves the paper discharge tray 32 up and down to lower the paper discharge tray 32. The sheet discharge tray 32 is lowered and the upper surface detection sensor is turned off. Then, the lowering of the paper discharge tray 32 is stopped. This operation is repeated, and when the paper discharge tray 32 reaches a specified tray full height, a stop signal is issued from the sheet post-processing device to the image forming device to stop the image forming operation of the system.

The stapling operation will be described.
A staple tray 36 and a hitting roller 30 on which a plurality of sheets can be stacked are arranged in the transport path 3. In addition, a stapler 41 divided by a driver and a clincher that advance and retreat in a direction orthogonal to the paper surface is disposed at the end position of the transport path 3. Furthermore, jogger fences 37 and 38 for aligning sheets on the staple tray 36 by moving back and forth in a direction perpendicular to the sheet surface are provided. The sheet conveyed to the conveyance path 3 is discharged onto the staple tray 36 and aligned in the width direction by the jogger fences 37 and 38. Further, the hitting roller 30 performs a pendulum motion and comes into contact with the upper surface of the sheet. Thus, the sheet bundle is aligned in the vertical direction by switching back in the direction of the stapler 41 and abutting the trailing edge of the sheet against the reference fences 39 and 40. In the end binding mode, the stapled sheet 41 is moved in a direction orthogonal to the paper surface and stapled at a proper position on the lower edge of the sheet bundle. The paper is discharged onto the paper discharge tray 32 by the paper discharge rollers 31 and 33 being sandwiched.

The clamp bundle conveyance unit will be described.
In the saddle stitching mode, sheets or sheet bundles are aligned, and the sheet or sheet bundle is clamped by the clamp movable fences 120 and 121 at the rear end of the sheet. The reference fences 39 and 40 are retracted outside the sheet width so as not to interfere with the sheet bundle conveyance. Next, the trailing edge of the sheet is sandwiched by the clamp movable fences 120 and 121. The clamp movable fences 120 and 121 are attached to the clamp longitudinal axis 106 disposed outside the machine side plate, and move in the vertical direction and along the curved conveyance path 4 in the horizontal direction. The vertical direction moves by the clamp vertical axis, and the horizontal movement moves along the guide rail 110 on the machine side plate that is the same locus as the transport path 4. Then, the sheet or sheet bundle is transported along the transport path 4. The sheet or sheet bundle with the sheet trailing edge sandwiched is conveyed to a predetermined position corresponding to the sheet size along the track of the guide rail 110.

The press folding section will be described.
The paper Z whose traveling direction has been changed by the branching claw 600 from the introduction path 1 is transported to the transport path 4 by the transport roller 11. The sheet or sheet bundle is conveyed downward by the clamp movable fences 120 and 121. Then, the sheet stops at the position where the sheet size length center is at the position of the folding blade 203 and shifts to the folding process. The stop position is detected by the folding position sensor 50 at the trailing edge of the sheet, and is sent to a position corresponding to the sheet size.
The sheet bundle length center portion stopped at the folding position is introduced into the press folding portion by the folding blade 203 and the conveying rollers 206 and 207.

  The center portion of the introduced sheet bundle length is pressed from above and below by a pair of press plates 219 and 220, and the sheet or sheet bundle is folded in half. The folded sheet or sheet bundle is discharged onto the saddle stitching tray 62 by the transport rollers 206 and 207 and the discharge rollers 232 and 233. The sheet or sheet bundle discharged to the saddle stitching tray 62 is pressed by a sheet pressing roller 61 attached to the sheet pressing unit 60. In addition, the folded sheet is swelled and does not interfere with the discharge of the next discharged sheet.

  The sheet punching unit B and the half-folding unit C having the transport path 4 are detachable, and the sheet post-processing device can be provided according to the needs of the user.

2-7 is a figure explaining a clamp bundle conveyance mechanism, and FIG. 2 is a general view of a clamp bundle conveyance part.
The clamp bundle conveying unit transmits the rotational movement of the clamp moving motor 101 through the driving belt 102, the upper and lower conveying belts 104a stretched on the lower and upper driving pulleys 103 and 105, and the upper and lower conveying belts stretched on the opposite side. The belt 104b converts the vertical movement.

  Clamp vertical movement parts 107a and 107b are attached to the vertical conveyor belts 104b and 104a, and the vertical movement is supported by the shafts 106a and 106b. The clamp lateral movement parts 108a and 108b are attached to the clamp vertical movement parts 107a and 107b to enable lateral movement. A clamp stay 114 is connected to the clamp lateral movement parts 108a and 108b, and the clamp stay 114 is interlocked with the vertical movement of the vertical conveying belts 104a and 104b along the rails 110a and 110b of the side plates 109a and 109b in the direction of the arrow Q. Move to.

  The sheet or sheet bundle nipped by the clamp portion R is conveyed through a conveying path constituted by the conveying guide plates 111a, 111b, 112a, 112b, 113, 115, 116, 117. The sheet or sheet bundle is detected by the folding position sensor 118 and the conveyance stops at a predetermined position.

Next, FIG. 3 in which the dotted line portion H in FIG. 2 is enlarged will be described.
There is a slidable part 108b in the clamp up / down moving part 107b, a clamp stay shaft 109b is inserted, and the clamp stay 114 is movable in the lateral direction along the side plate rail 110b while moving up and down. The clamp stay 114 has a clamp shaft 123 as a center of rotation with respect to the lower clamp 121b on the fixed side, and the upper clamp 120b is pressed against the lower clamp 121b by the spring 122b.

  FIG. 4 is an enlarged view of a dotted line portion R in FIGS. 2 and 3, and FIG. 4 shows a clamp portion that holds the rear end of the sheet or sheet bundle. FIG. 5 is a view at another angle of FIG. 4 and shows a state where the rear end of the sheet or sheet bundle P is held.

  The clamp part of the clamp bundle conveying part is connected to the clamp shaft 123 at the clamp upper parts 120a and 120b and the lower clamp parts 121a and 121b. Since the upper clamps 120a and 120b are connected by the clamp part connecting sheet metal parts 124, the upper clamps 120a and 120b of the left and right clamp parts can operate simultaneously. The lower clamps 121a and 121b and the upper clamps 120a and 120b hold the rear end of the sheet or sheet bundle P by the spring force of the springs 122a and 122b.

6 and 7 are enlarged views of a dotted line portion V in FIG.
That is, it is a diagram showing a clamp release mechanism for releasing the clamp by the springs 122a and 122b of the clamp unit holding the rear end of the paper or the paper bundle. The clamp release mechanism is attached to the stay 125 and is driven by a clamp release motor 127 attached to the clamp release motor bracket 126. The power from the clamp release motor 127 is transmitted to the rack portion of the clamp pressure disengaging lever 132 having the shafts 130 and 131 as the lateral axes via the gear 129 having the shaft 128 as the axis. The clamp pressure release lever 132 moves in the direction of the arrow Q, and presses the clamp portion connecting sheet metal part 124 shown in FIGS. Then, the clamps 120a and 120b on the movable side with respect to the sheet or sheet bundle are opened, and the sheet or sheet bundle is released. As a result, the clamp is released during the folding process after the sheet or sheet bundle is conveyed, and a press-foldable state is achieved.

8-16 is a figure for demonstrating a press folding mechanism.
FIG. 8 is a perspective view of the press folding portion, and FIG. 9 is a side view of the press folding portion. The press folding section includes a press plate driving cam 201, a folding blade driving cam 202, a folding blade 203, a folding blade support bar 204, and a side plate 205. When the folding blade drive cam 202 rotates, the folding blade support rod 204 moves horizontally along the cam groove, and the folding blade 203 moves in the arrow Q direction. This guides the sheet length center part of the sheet or sheet bundle P to the folding part.

  FIG. 10 is a configuration diagram in which the press plate driving cam 201, the folding blade driving cam 202, and the side plate 205 are removed from FIG. Moreover, FIG. 11 is the figure which looked at FIG. 10 from the side. With reference to these drawings, a press unit that folds the paper or the paper P guided to the folding part by the folding blade 203 will be described.

  The press section includes transport rollers 206 and 207, a moving plate 208, press guide rollers 211 and 212, and press pressure release cams 209 and 210. The sheet P or the sheet P guided to the folding unit by the folding blade 203 is conveyed by the conveying rollers 206 and 207 to the pressing unit. As the moving plate 208 moves, the press guide rollers 211 and 212 and the press pressure releasing cams 209 and 210 connected to the moving plate 208 can move to the left and right.

  12 is a view in which the moving plate 208 is removed from FIG. 10, and FIG. 13 is an enlarged view of the dotted line portion H in FIG. The upper press unit 217 and the lower press unit 218 are in a state where spring pressure is applied to the four corners of the unit corner. In the standby state, the press upper unit 217 and the press lower unit 218 are separated from each other by the press pressure release cams 209 and 210 provided inside the press moving plate, and the folded state end portion of the sheet bundle is received. is there. When the moving plate 208 moves in the arrow Q direction, the press pressure release cams 209 and 210 connected to the moving plate 208 move. Then, the rollers 213 and 215 of the upper press unit 217 and the rollers 214 and 216 of the lower press unit 218 are moved in the directions of arrows A and B by the inclined surfaces of the press pressure releasing cams 209 and 210. As a result, the folded portion of the sheet bundle is pressed.

  14 is a view showing the inside of the press unit of FIG. 11, and FIG. 15 is a side view of FIG. Press plates 219 and 220 are connected inside the press unit. When the press pressure release cams 209 and 210 are moved, the press plate 219 is moved in the direction of arrow A and the press plate 220 is moved in the direction of arrow B in conjunction with the press unit, so that the sheet or sheet bundle P is moved by the press plates 219 and 220. It is sandwiched and folded. The press plates 219 and 220 are positioned on both upper and lower sides of a conveyance path constituted by conveyance rollers 206 and 207 as paper conveyance means and paper discharge rollers 232 and 233.

  The press guide rollers 211 and 212 connected to the moving plate 208 move on the press plates 219 and 220 in conjunction with the movement of the moving plate 208 in the arrow Q direction. Then, the press plates 219 and 220 that can be rotated by grooves (221, 222, 223, and 224 in FIG. 13) are bent toward the folding front end portion of the sheet bundle P due to the curved shape of the press plates 219 and 220.

FIG. 16 shows the flow of the pressing operation for folding the sheet bundle.
In the press standby state (state (1)), the press pressure release cam 209 is inserted into the roller 213 on the press unit and the roller 214 below the press unit. As the moving plate 208 moves, the press pressure release cam 209 and the press guide rollers 211 and 212 move leftward. When the press pressure release cam 209 is disengaged from the upper and lower rollers 213, 214) of the press unit, the upper and lower sides of the press unit approach (state (2)). When the press pressure release cam 209 is completely removed from the rollers 213 and 214, the press plates 219 and 220 are brought into close contact with each other, and a vertical press pressure is applied to the sheet bundle between the press plates (state (3)).

  Until the state (3) is reached, the horizontal portions 230a and 231a of the guide members 230 and 231 of the press plate cause the press plates 219 and 220 to load from the press guide rollers 211 and 212 only in the vertical direction. The posture of the press plates 219 and 220 does not change.

  When the moving plate 208 further moves, the press plate guide members 230 and 231 have the same shape as the press plate, so that the press guide rollers 211 and 212 cause the press plates 219 and 220 to roll and fold toward the front end of the sheet bundle folding. (State (4)).

FIGS. 17-18 is a figure for demonstrating the principal part of Embodiment 1 of this invention.
FIG. 17 (1) is a diagram showing the configuration of the needleless binding means arranged on the press plates 219 and 220 corresponding to FIG. 16 (1). FIG. 17 (2) shows the state after the folding operations (1) to (4) in FIG. 16 are completed. FIGS. 17 (3) and 17 (4) show the paper discharge operation after the folding operation. The stapleless binding means is disposed in front of the sheet bundle conveying direction of the press plates 219 and 220, and by the same driving, the sheet bundle is sandwiched behind the press plate and is bound in front.

  FIG. 17 a is an enlarged view of the needleless binding means of the press plates 219 and 220. As shown in FIG. 17a, the needleless binding means is provided with a plurality of concave and convex grooves. The bundle of sheets is bound by sandwiching the bundle of sheets with the concave and convex grooves and crimping the fibers of the sheets.

  FIG. 17b is a view of the needleless binding means of the press plate 220 as viewed from above. There are a plurality of stapleless binding means in a direction perpendicular to the sheet bundle conveyance direction, and binding processing can be performed simultaneously.

FIG. 18 is a diagram for explaining the operation flow of this embodiment.
The sheet bundle is conveyed to the folding part C (step S1). Then, folding processing and binding processing are started for the sheet bundle (step S2). Next, the folding process and the binding process are finished for the sheet bundle (step S3). Then, the sheet bundle that has been subjected to the folding process is discharged (step S4).

  In the present embodiment, when the sheet bundle is press-folded by the sheet post-processing device, the sheet bundle is sandwiched by the pressing unit, and the sheet bundle is crimped and bound by a part of the pressing unit, so that the sheet is driven by the same drive. A bundle folding process and a binding process can be performed simultaneously. Further, when the sheet bundle is folded by the pressing means, the sheet bundle is sandwiched by the press plate and bound by a part of the press plate, so that the folding process and the binding process of the sheet bundle can be performed simultaneously by the same drive.

<Embodiment 2>
FIG. 19 is a diagram for explaining the second embodiment of the present invention, and is a diagram in which the binding method of the needleless binding means A is a perforation method.
The stapleless binding means A is disposed in front of the sheet bundle conveying direction of the press plates 219 and 220. With the same drive, the sheet bundle is sandwiched behind the press plate, and binding is performed in front.

19a is an enlarged view of the needleless binding means A of the press plates 219 and 220, and FIG. 19b is a view of the punching blade 310a and the protrusion press 310c of the press plate 220 as viewed from above.
As shown in FIGS. 19a and 19b, the needleless binding means A is provided with a perforation blade 310a and a perforation hole 310b. The punching blade 310a cuts a part of the sheet bundle, and binds the sheet bundle by pushing the cut part of the notched sheet downward by the projection press 310c. There are a plurality of punching blades 310a and protrusion presses 310c in a direction perpendicular to the sheet bundle conveying direction, and the binding processing is performed simultaneously.

  The present embodiment has a punched paper binding means for binding paper by the punching means provided in a part of the pressing means, so that when the paper bundle is press-folded, the paper bundle is sandwiched by the pressing means. A sheet bundle is punched by punching means provided in the section. Then, the folding process and the binding process of the sheet bundle can be performed at the same time by the same driving even when the sheet is thick by folding the notched portion by punching.

<Embodiment 3>
20 and 21 are diagrams for explaining the third embodiment of the present invention.
As shown in FIG. 20, the paper detection sensor 500 is disposed between the transport rollers 206 and 207 and the press plates 219 and 220. When the folded front end of the sheet bundle reaches the position of the sheet detection sensor 500, the sheet detection sensor 500 detects and turns on. After the paper detection sensor 500 is turned on, the paper bundle is transported by the transport rollers 206 and 207 by the distance T (the distance between the paper detection sensor and the stapleless binding means, and then stopped. Then, the press plates 219 and 220 are used. Then, the sheet bundle is sandwiched, folded and bound.

  FIG. 21 is a diagram showing an operation flow of the present embodiment. The sheet bundle is conveyed to the folding and binding unit C (step S1). The position of the folding front end of the sheet bundle is detected (step S2). At this time, if the paper detection sensor is ON, the process proceeds to step S3. If the paper detection sensor is OFF, the process proceeds to step S1. In order to convey the sheet bundle to the binding position, the sheet bundle is conveyed by a distance T (interval between the sheet detection sensor and the stapleless binding means) (step S3). The folding process and the binding process are started for the sheet bundle by the press plate (step S4). The folding process and the binding process are finished for the sheet bundle (step S5), and the finished sheet bundle is discharged by the transport roller (step S6).

  In this embodiment, by detecting the folding tip of the sheet bundle, when the sheet bundle is pressed and folded, the sheet detection sensor 500 detects the folding tip of the sheet bundle, and the stop position and binding position of the sheet bundle are detected. Can be adjusted. By adjusting the stop position and the binding position of the sheet bundle, the accuracy of the binding position can be increased, and a binding position defect can be prevented.

<Embodiment 4>
22 and 23 are diagrams for explaining the fourth embodiment of the present invention, and FIG. 22 is a diagram showing the time of additional folding and binding operations.
The stapleless binding means is disposed in front of the sheet bundle conveying direction of the press plates 219 and 220, and by the same driving, the sheet bundle is sandwiched behind the press plate and is bound in front. A sheet number detecting means (not shown) detects the number of sheets. If the number of sheets is equal to or greater than a certain number (in the embodiment, 10 or more), the folding operation is performed again as shown in FIGS. 22 (5) and 22 (6). To perform additional folding and binding processing.

FIG. 23 is a diagram showing an operation flow of this embodiment.
The sheet bundle is conveyed to the folding part C (step S1). Then, the folding process and the binding process for the sheet bundle are started by the press plate (step S2). Then, the number of sheets is determined for additional folding, binding operation, and whether or not to perform the operation (step S3). If the determination result is 10 or less, the process proceeds to step S5. If the determination result is 10 or more, the process proceeds to step S4. Then, an additional folding process and a binding process for the sheet bundle are started by opening and closing the press plate (step S4). Next, the folding process and the binding process for the sheet bundle are finished (step S5), and the sheet bundle for which the folding process is finished is discharged (step S6).

  In the present embodiment, when the number of sheets is large, additional folding and additional binding can be performed by controlling the folding process and the binding process by the press unit repeatedly. Further, by performing additional folding and additional binding, it is possible to prevent binding failure even when the paper thickness is thick.

  The present invention is not limited to the embodiments described above, and many variations are possible by those having ordinary knowledge in the art within the technical idea of the present invention.

1: Introduction path 2 to 4: Conveyance path 10: Entrance rollers 11 and 12: Conveyance roller 13: Entrance sensor 20: Branch claw 21: Discharge roller 22: Discharge tray 30: Tapping rollers 31, 32, 33: Discharge roller 34: Filler 35: Paper discharge sensor 36: Staple tray 37: Jogger fence 39: Reference fence 41: Stapler 50: Folding position sensor 60: Paper presser 61: Paper presser roller 62: Saddle stitching tray 100: Image forming apparatus 101: Clamp Movement motor 102: Drive belt 103: Lower vertical drive pulley 104a, 104b: Vertical transport belt 105: Upper vertical drive pulley 106: Clamp vertical axis 106a: Shaft 107a: Clamp vertical movement part 107b: Clamp vertical movement part 108a: Clamp horizontal movement Part 108b: Part 109a: Side 109b: Clamp stay shaft 110: Guide rail 110a: Rail 110b: Side plate rail 111a: Transport guide plate 114: Clamp stay 118: Folding position sensor 120: Clamp movable fences 120a, 120b: Upper clamp 121a, 121b: Lower clamp 122a, 122b : Spring 123: Clamp shaft 124: Clamp part connecting sheet metal part 125: Stay 126: Clamp release motor bracket 127: Clamp release motor 128, 130: Shaft 129: Gear 132: Clamp pressure release lever 201: Press plate drive cam 202: Folding Blade drive cam 203: Folding blade 204: Folding blade support rod 205: Side plate 206: Conveying roller 208: Moving plate 209: Press pressure releasing cam 211: Press guide roller 213 16: Roller 217: Upper press unit 218: Lower press unit 219, 220: Press plate 230: Guide member 230a: Horizontal portion 232: Paper discharge rollers 310a, 310b: Perforated hole 310c: Projection press 500: Paper detection sensor 600: Branch Claw P: Paper, paper bundle

JP 2011-251811 A

Claims (7)

Paper transport means for transporting paper to the stacking unit;
Paper stacking means that can stack multiple sheets of paper,
A pair of pressing means disposed on both sides of the paper conveying means for pressurizing the paper bundle;
Press pressurizing means for pressurizing the press means,
A binding means for binding sheets by pressing, provided in a part of the pressing means;
A sheet post-processing apparatus comprising:
The binding means is disposed forward with respect to the conveyance direction of the sheet bundle in the pressing means,
When the pressing means pressurizes the pressing means to fold the sheet bundle, the folding means and the binding process can be performed simultaneously by pressing the binding means toward the sheet bundle. A sheet post-processing apparatus. The paper post-processing apparatus according to claim 1.
The sheet post-processing apparatus according to claim 1, wherein the binding means is a concavity and convexity formed opposite to each of the pair of press means and formed in the pressing direction . The paper post-processing apparatus according to claim 1.
The sheet post-processing apparatus , wherein the binding unit is a punched sheet binding unit that is pressed toward the sheet bundle and penetrates the sheet bundle . In the paper post-processing apparatus according to any one of claims 1 to 3,
A sheet post-processing apparatus comprising sheet detecting means for detecting a folded leading end portion of a sheet bundle. In the paper post-processing apparatus according to any one of claims 1 to 4,
A sheet post-processing apparatus that performs control to repeat folding processing and binding processing by the pressing means when the number of sheets is large.   In the paper post-processing apparatus according to any one of claims 1 to 5,
  The pressing means has a curvature portion having a curvature with each other on a surface contacting the sheet bundle,
  The sheet post-processing apparatus, wherein when the pressurizing unit pressurizes the sheet bundle, the sheet is pressed from the rear side to the front side in the transport direction. An image forming apparatus comprising the sheet post-processing apparatus according to claim 1 .