Sheet processing device and image formation system

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

Conventionally, there is known an apparatus having a configuration in which a saddle stitch booklet formed by saddle stitching and saddle stitching is held in a vertical state with the fold portion facing upward and conveyed to a subsequent processing section. As an example of such an apparatus, for example, in Patent Document 1, a saddle-stitched booklet that has been saddle-stitched on a saddle-shaped mounting portion is moved to a buffer saddle that supports the inferior angle portion of the fold portion from below. A technique for transporting a saddle stitch booklet by sliding the buffer saddle is described.

<p num="0003"><patcit num="1"><text>Japanese Unexamined Patent Publication No. 2013-107752</text></patcit></p>

<p num="0004"> However, in Patent Document 1, when the saddle-stitched booklet is moved from the saddle-shaped mounting portion to the buffer saddle, the fold portion of the saddle-stitched booklet and the top ridgeline of the buffer saddle may be displaced. In such a state, the saddle-stitched booklet is unstable and may be further displaced during the subsequent transportation, which may cause a problem in the next process.</p><p num="0005"> The present invention has been made in view of the above problems, and an object of the present invention is a paper processing apparatus and an image forming system capable of supporting a saddle stitch booklet in a vertical state from below at an appropriate position and stably transporting the booklet. Is to provide.</p>

<p num="0006"> In order to solve the above problems, according to one aspect of the present invention, the paper processing apparatus is The first support part that supports the chevron-shaped paper with a crease formed in the center from below, and A second support portion adjacent to the first support portion and supporting the paper extruded from the first support portion from below, and a second support portion. A movable portion that supports the paper together with the second support portion from below, projects a predetermined amount above the support position of the second support portion, and then descends below the support position. The drive unit that drives the movable unit and After the paper is extruded from the first support portion to the second support portion, the control unit causes the movable portion to perform the projecting operation by driving the drive unit. It is characterized by having.</p><p num="0007"> Also, according to another aspect of the invention, the image forming system is: An image forming device that forms an image on paper, The paper processing device, which is connected to the image forming apparatus and performs predetermined paper processing on the paper on which the image is formed by the image forming apparatus, and the paper processing apparatus. It is characterized by being equipped with.</p>

<p num="0008"> According to the present invention, the saddle-stitched booklet in the vertical state can be supported at an appropriate position from below and can be stably conveyed.</p>

<figref num="1">It is a schematic schematic diagram which shows the whole structure of an image formation system.</figref><figref num="2">It is a perspective view which shows an example of the structure of the saddle stitch processing part and the paper transport part of a paper processing apparatus.</figref><figref num="3">It is a figure for demonstrating the structure of the movable part of a moving saddle unit.</figref><figref num="4">It is a perspective view which shows an example of the structure of the paper transport part.</figref><figref num="5">It is a figure which shows an example of the structure of the clamp part, the edge cutting part, and the square spine forming part of a paper processing apparatus.</figref><figref num="6">It is a figure for demonstrating the operation of the movable part of a moving saddle unit.</figref><figref num="7">It is a block diagram which shows the main structure which concerns on the operation control of an image formation system.</figref><figref num="8">It is a flowchart which shows the operation of the paper transport part.</figref><figref num="9">It is a figure which shows the deformation example of the movable part of a moving saddle unit.</figref><figref num="10">It is a figure which shows the deformation example of the movable part of a moving saddle unit.</figref>

Hereinafter, the image forming system 1 according to the embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic schematic diagram showing the overall configuration of the image forming system 1. The image forming system 1 includes an image forming apparatus 100, an intermediate conveying apparatus 200, a paper processing apparatus 300, and a flat binding processing apparatus 400. In the following description, the vertical direction is the Z direction, and the direction along the direction in which the image forming apparatus 100, the intermediate conveying apparatus 200, the paper processing apparatus 300, and the flat binding processing apparatus 400 shown in FIG. 1 are connected to each other is X. The direction is defined as the direction orthogonal to the X and Z directions as the Y direction. Further, the X direction will be described with the front side and the rear side, the Y direction will be described with the right side and the left side, and the Z direction will be described with the upper side and the lower side. Here, the front side is the upstream side in the transport direction in the image forming system 1, and the rear side is the downstream side thereof. The right side is the upstream side in the paper transport direction in the middle folding / saddle stitching process of the paper processing device 300, and the left side is the downstream side thereof.

The image forming apparatus 100 forms an image on paper. Specifically, the image forming apparatus 100 develops, for example, a transport unit that pulls out paper stored as a recording medium from a paper tray and conveys it, and develops a toner image corresponding to bitmap data on a primary transfer member such as a transfer roller. The toner image developed on the developing unit and the primary transfer member is transferred to the secondary transfer member such as the transfer drum 150. The toner image transferred to the primary transfer unit and the secondary transfer member is transferred to the paper conveyed by the transfer unit. An image is formed on the paper by providing a secondary transfer unit, a fixing unit for fixing the transferred toner image on the paper, a discharge unit for discharging the paper after the fixing process by the fixing unit, and the like. Further, the image forming apparatus 100 delivers the paper on which the image is formed and ejected to the intermediate conveying apparatus 200. That is, the image forming system 1 is connected so that the paper discharged from the image forming apparatus 100 is delivered to the intermediate conveying apparatus 200.

The intermediate transfer device 200 is a device capable of temporarily holding the paper on standby and scoring and cutting the paper. Specifically, the intermediate transport device 200, for example, transports the paper transported from the image forming apparatus 100 so as to lower it, and temporarily stops and waits with the paper surface substantially along the Z direction. A part (stacker), a matching part that aligns the position of the waiting paper, a scoring part (creaser) that lines the aligned paper, and a margin part of the paper while transporting the scoring paper. It is equipped with a cutting section (slitter) that cuts the paper. That is, in the intermediate transfer device 200, the paper delivered from the image forming apparatus 100 is temporarily stopped at the standby unit, aligned by the matching unit, then subjected to the scoring process by the scoring portion, and then scoring. The margins of the paper are cut by the cutting part while transporting the paper. After that, the intermediate transfer device 200 delivers the paper cut in the margin portion by the cutting section to the paper processing device 300. The intermediate transfer device 200 can also transfer the paper delivered from the image forming device 100 to the paper processing device 300 without performing some or all of the various processes performed by the intermediate transfer device 200.

The paper processing device 300 performs a saddle-stitching process for folding the paper in half (folded in half), a saddle-stitching process for creating a saddle-stitched booklet by stacking a predetermined number of sheets and binding them, and a small-edge cutting of the saddle-stitched booklet. It is a device that performs a cutting process for performing saddle stitching, a square spine forming process for forming the spine of a saddle stitch booklet, and the like. Specifically, the paper processing device 300 superimposes, for example, a saddle-folded portion 310 that saddle-stitches the paper delivered from the intermediate transport device 200 along the Y direction, and a saddle-stitched portion 310. , Saddle stitching section 320, which is saddle-stitched to make a saddle-stitching booklet, and a saddle-stitching booklet that is saddle-stitched by the saddle-stitching section 320 and conveyed in the horizontal plane in the direction orthogonal to the crease (X direction). Clamp section 340 that sandwiches and holds the vicinity of the folds of the saddle stitch booklet conveyed by the transfer mechanism 330, edge cutting section 350 that cuts the edges of the saddle stitch booklet held by the clamp section 340, and saddle stitch booklet. It is provided with a square spine molding section 360 for performing a square spine molding process for the spine cover, a discharge section 370 for discharging the saddle stitch booklet to the outside, and the like. The paper processing device 300 may also deliver the paper delivered from the intermediate transfer device 200 to the flat binding processing device 400 without performing some or all of various processing by the paper processing device 300. it can.

The middle fold portion 310 is arranged, for example, along a pair of middle fold rollers and a YZ plane that is located below the pair of middle fold rollers and can operate to enter between the pair of middle fold rollers. It is equipped with a plate-shaped folding knife. The paper delivered from the image forming apparatus 100 is conveyed to a position where the central portion of the paper in the X direction faces the folding knife. Then, the folding knife enters between the pair of middle folding rollers and pushes the paper into the nip portion. As a result, the paper is folded in the middle so that a crease portion along the Y direction is formed at the contact position with the folding knife. That is, the paper has a so-called mountain fold shape (mountain-shaped paper) in which the fold portion is on the upper side and the edges at both ends are on the lower side. The paper folded in the middle is conveyed in the direction along the crease (Y direction) by a conveying portion (not shown), and reaches the saddle stitching portion 320.

FIG. 2 is a perspective view showing an example of the configuration of the saddle stitching portion 320 and the transport mechanism 330. Further, FIG. 3 is a diagram for explaining the configuration of the movable portion 333 of the transport mechanism 330. Further, FIG. 4 is a perspective view showing an example of the configuration of the transport mechanism 330.

The saddle stitching portion 320 is a saddle-stitching portion (first support portion) 321 that is folded in the middle by the center folding portion 310 and then overlaps and accumulates the paper conveyed in the direction (Y direction) along the fold portion. , A needle-striking portion 322 provided above the saddle-hanging portion 321 and a needle-receiving portion 323 provided inside the saddle-hanging portion 321 are provided. When a predetermined number of sheets of paper are accumulated on the saddle-hanging portion 321, the binding needles are driven into the folds of the paper bundle by the cooperation of the needle-setting portion 322 and the needle receiving portion 323 to form a saddle-stitched booklet. The formed saddle stitch booklet is pushed out to the transport mechanism 330 on the downstream side by the matching portion 324 provided at the right end portion (end portion on the upstream side in the transport direction) of the saddle-stitched portion 321.

The transport mechanism 330 is for transporting the saddle-stitched booklet extruded from the saddle-stitched portion 320 from the rear to the front in the X direction and delivering it to the clamp portion 340 in a state of supporting the saddle-stitched booklet from the inside of the fold portion. ..

The transport mechanism 330 includes a moving saddle unit U that reciprocates on the support plate S in the X direction. The moving saddle unit U includes a flat rectangular parallelepiped pedestal portion (paper transport portion) 331 that can reciprocate on the support plate S in the X direction. The pedestal portion 331 supports the paper support portion (second support portion) 332, the movable portion 333, the first pressing portion 334, and the second pressing portion 335, and these are supported by the reciprocating movement of the pedestal portion 331. It is designed to move back and forth as a unit.

The paper support portion 332 is a plate-shaped member along the YZ plane, and is provided at the front end portion of the pedestal portion 331. The paper support portion 332 supports the saddle stitched booklet extruded from the saddle stitched portion 320 so as to support the fold portion (binding portion) from below. At this time, the paper support portion 332 is configured to support the central portion of the saddle stitch booklet in the paper transport direction.

The movable portion 333 is provided on the downstream side (left side of the paper support portion 332) of the paper support portion 332 in the paper transport direction. The movable portion 333 includes a plate body 3331 that is configured to be movable in the vertical direction. Under normal conditions, the plate body 3331 supports the saddle stitch booklet together with the paper support portion 332 at a support position at the same height as the support position of the paper support portion 332 (the position of the solid line in FIG. 3). Then, the plate body 3331 becomes a height position (see the alternate long and short dash line in FIG. 3) in which the top of the plate body 3331 protrudes a predetermined amount above the support position of the paper support portion 332 by driving the drive unit 333a, and then the paper support portion 332 It returns to the initial height position by performing a protruding operation that makes it a height position (see the chain line in Fig. 3) that is retracted slightly below the support position of. The drive unit 333a is configured to include, for example, a solenoid and a spring, and immediately after the saddle stitch booklet is supported by the paper support unit 332 under the control of the paper processing control unit 505 (described later), one or more movable units 333 are provided. The above-mentioned protruding operation is performed once. The configuration of the drive unit 333a is not limited to the above.

By such an operation of the movable portion 333, the saddle stitch booklet supported by the paper support portion 332 is given a force to push up from the inside of the crease portion, so that the position of the fold portion of the saddle stitch booklet is the position of the paper support portion 332. This can be corrected if it deviates from the top ridgeline.

Further, when the movable portion 333 comes into contact with the lower part of the clamp portion 340 when the saddle stitch booklet is delivered to the clamp portion 340, the movable portion 333 is pushed by the clamp portion 340 and retracted during the above-mentioned protruding operation. It is configured so that it can be retracted to a height position (evacuation position, see the two-dot chain line in FIG. 3) retracted further downward.

The first holding portion 334 is provided behind the paper support portion 332 and the movable portion 333, and after the above-mentioned vertical movement of the movable portion 333, slides forward on the pedestal portion 331 and rotates the upper end thereof. By rotating the portion 334a downward, the central portion of the fold portion of the saddle stitch booklet can be pressed from above. The state in which the first holding portion 334 holds the saddle stitch booklet is shown by a two-dot chain line in FIG.

The second holding portion 335 is erected at a position sandwiching the first holding portion 334 along the Y direction, and is a pair of arm portions 335a, 335a that operate so as to gradually fall down as the pedestal portion 331 moves forward. When the pair of arm portions 335a and 335a gradually tilt forward, the contact portions 335b and 335b at the tip portions of the arm portions 335a and 335a can press the rear surface of the saddle stitch booklet in the transport direction.

FIG. 5 is a diagram showing an example of the configuration of the clamp portion 340, the edge cutting portion 350, and the square spine forming portion 360 of the paper processing apparatus. Further, FIG. 6 is a schematic view showing how the lifter plates 341 and 341 of the clamp portion 340 lift the saddle stitch booklet.

The clamp portion 340 can be raised and lowered along the guide rail L provided along the Z direction, and is located above the guide rail L while the saddle stitch booklet is conveyed from the transfer mechanism 330. It can be lowered when receiving the saddle stitch booklet from the mechanism 330. The clamp portion 340 includes a pair of lifter plates 341,341 and a pair of holding members 342,342. Further, a plurality of guide wires 343 are provided in parallel along the Y direction on the holding member 342 side located in front of the pair of holding members 342, 342.

The guide wire 343 is provided at a position where the saddle stitch booklet abuts on the front surface in the transport direction of the saddle stitch booklet when the saddle stitch booklet is conveyed from the rear to the front by the transfer mechanism 330, and the saddle stitch booklet is conveyed by the transfer mechanism 330. The booklet is folded because it is sandwiched between the second holding portion 335 and the guide wire 343 as it advances forward.

Then, the clamp portion 340 descends with the saddle stitch booklet positioned between the clamp portion 340 and the edge cutting portion 350. Then, when the lower portion of the clamp portion 340 comes into contact with the movable portion 333 and is pushed downward, the plate body 3331 of the movable portion 333 is retracted to the retracted position, and a space for inserting the lifter plates 341 and 341 is formed. When the space is formed in this way, the lifter plates 341, 341 support and lift the saddle stitch booklet so as to be hooked from below, and in that state, the pair of sandwiching members 342, 342 move so as to approach each other, so that the saddle stitch booklet is sandwiched. Will be done. After the saddle-stitched booklet is sandwiched by the pair of sandwiching members 342, 342, the pedestal portion 331 retracts rearward. After that, the clamp portion 340 descends along the guide rail L provided along the Z direction so that the edge end portion side of the saddle stitch booklet can enter the edge cutting portion 350.

The edge cutting portion 350 includes a cutting holding portion 351 and 352, and the clamp portion 340 descends along the guide rail L so that the edge end portion of the saddle stitch booklet enters the gap between the cutting holding portions 351 and 352. When the edge of the saddle stitch booklet enters the gap between the cutting holding portions 351 and 352, the cutting blade 353 operates to cut the edge of the saddle stitch booklet and trim the edge of the saddle stitch booklet. ..

The square spine molding portion 360 is mounted on the clamp portion 340. The square spine molding portion 360 is composed of holding plates 361, 362, rollers (not shown), etc., and the saddle stitch booklet is sandwiched by the holding plates 361, 362 and then crushed by the rollers so that the folds are flat. The crease is formed into a square shape.

The discharge unit 370 discharges the saddle-stitched booklet that has been cut and / or square-backed. In some cases, the saddle-stitched booklet that has not been subjected to either the cutting process or the square spine forming process may be discharged.

Returning to FIG. 1, the flat binding processing apparatus 400 performs flat binding processing and the like on a plurality of sheets of paper. Specifically, the flat binding processing device 400 is, for example, a staple processing unit that staples a plurality of sheets delivered from the paper processing device 300, and is parallel to the spine of a plurality of sheets that have been stapled. It is provided with a page edge cutting section for cutting off a part of the edge portion in order to align the edges, a discharge section for discharging the processed paper by each connected device, and the like. The flat binding processing device 400 can also eject the paper delivered from the paper processing device 300 without performing a part or all of various processing by the flat binding processing device 400.

Next, the operation control of the image forming system 1 will be described. FIG. 7 is a block diagram showing a main configuration related to operation control of the image forming system 1.

The image forming system 1 receives an input operation of a user related to the operation of the image forming system 1, and outputs an operation related to the operation of the image forming system 1. The operation display unit 501 and a central control for controlling the operation of the entire image forming system 1. Unit 502, image formation control unit 503 that controls the operation of the image forming device 100, intermediate transfer control unit 504 that controls the operation of the intermediate transfer device 200, and paper processing control unit (control unit) that controls the operation of the paper processing device 300. It has a flat binding processing control unit 506 that controls the operation of the 505 and the flat binding processing device 400.

The operation display unit 501 has, for example, a touch panel type operation display device, switches and keys for various inputs, and transmits signals according to the input contents of the user to the central control unit 502. The central control unit 502, the image formation control unit 503, the intermediate transfer control unit 504, the paper processing control unit 505, and the flat binding processing control unit 506 each have a CPU, RAM, ROM, etc., and software according to the processing content. Reads programs and various data and executes them.

The central control unit 502 sets various conditions related to the image forming system 1 according to the input contents of the user input via the operation display unit 501. This setting condition includes, for example, the size of the paper, the number of colors at the time of image formation (for example, color, gray scale, monochrome, etc.), the number of sheets to be folded in the middle, the nip pressure in the middle folding process, and the saddle stitching process. Number of sheets of paper, type of paper to be saddle stitched, size, basis weight, number of binding needles to be inserted into the creases of the paper in saddle stitching, position to insert the binding needles in saddle stitching (binding position) , Execution / non-execution of cutting of the end part that becomes the margin part, width of the end part to be cut, etc. are included. Then, the central control unit 502 is for performing processing according to the set contents on each control unit of the image formation control unit 503, the intermediate transfer control unit 504, the paper processing control unit 505, and the flat binding processing control unit 506. Output the command. Each control unit controls the operation of the device to be controlled in response to an instruction.

For example, the central control unit 502 outputs a command to the paper processing control unit 505 to perform a center folding process, a saddle stitching process, a small edge cutting process, a square spine forming process, and the like. The paper processing control unit 505 controls the center folding unit 310, the saddle stitching unit 320, the clamp unit 340, the edge cutting unit 350, and the square spine forming unit 360 in accordance with this, and performs each processing. At this time, the paper processing control unit 505 controls the transport mechanism 330 to deliver the saddle stitch booklet from the saddle stitch unit 320 to the clamp unit 340.

Here, the operation of the transport mechanism 330 in this embodiment will be described in detail. FIG. 8 is a flowchart showing the operation of the transport mechanism 330 from the saddle stitching booklet being delivered from the saddle stitching portion 320 to the saddle stitching booklet being delivered to the clamp portion 340.

First, when the saddle stitch booklet is conveyed from the saddle stitch unit 320 and the paper support unit 332 supports the saddle stitch booklet (step S11), the paper processing control unit 505 drives the drive unit 333a and the movable unit 333. Is moved up and down to vibrate the saddle stitch booklet (see Fig. 3) (step S12). As a result, the saddle-stitched booklet is given a force to push up from the inside of the crease, so that the fold (center of gravity) of the saddle-stitched booklet is automatically centered, and the fold coincides with the top ridgeline of the paper support portion 332. As such, the position will be corrected.

Next, the paper processing control unit 505 presses the saddle stitch booklet from above by the first pressing unit 334 (step S13), and slides the pedestal unit 331 forward (step S14). Here, the saddle-stitched booklet to be conveyed is sandwiched by the second pressing portion 335 and the guide wire 343 as it advances forward, and is folded while maintaining a symmetrical shape centered on the position of the fold portion. ..

Next, when the movement of the pedestal portion 331 is completed, the paper processing control unit 505 retracts the first holding portion 334 from the saddle stitch booklet (step S15). As a result, the saddle stitch booklet is in a state where the symmetrical shape sandwiched from the front and back by the second pressing portion 335 and the guide wire 343 is maintained.

Next, the paper processing control unit 505 lowers the clamp unit 340 (step S16). At this time, the lower portion of the clamp portion 340 comes into contact with the movable portion 333, and the plate body 3331 of the movable portion 333 is lowered to the retracted position to form a space.

Next, the paper processing control unit 505 inserts the lifter plates 341 and 341 into the space formed by lowering the movable unit 333 (see FIG. 6), supports the saddle stitch booklet so as to be hooked from below, and lifts it (step S17). After that, the saddle stitch booklet is sandwiched by the pair of sandwiching members 342 and 342 (step S18).

Next, the paper processing control unit 505 moves the pedestal unit 331 to the rear original position (step S19), and ends this processing.

As described above, according to the present embodiment, the saddle-stitched portion 321 that supports the chevron-shaped paper having the crease formed in the central portion from below, and the saddle-stitched portion 321 that is adjacent to the saddle-stitched portion 321 and from the saddle-stitched portion 321. The paper support portion 332 that supports the extruded saddle stitch booklet from below, and the saddle stitch booklet that is supported from below together with the paper support portion 332, protrudes upward by a predetermined amount from the support position of the paper support portion 332, and then the support position. After the saddle stitch booklet is pushed out from the saddle-stitched part 321 to the paper support part 332, the moving part 333 that performs the downward protruding operation, the driving part 333a that drives the moving part 333, and the driving part 333a are driven. It is provided with a paper processing control unit 505 that causes the movable unit 333 to perform a projecting operation. For this reason, the protruding motion of the movable portion 333 gives the saddle stitch booklet a force to push it up from the inside of the crease portion, so that the fold portion (center of gravity) of the saddle stitch booklet is automatically centered and becomes the crease portion of the saddle stitch booklet. , It is possible to correct the deviation of the paper support portion 332 from the top ridge line. Therefore, the saddle-stitched booklet in the vertical state can be supported at an appropriate position from below, and then stably conveyed.

According to the present embodiment, the paper processing control unit 505 causes the movable unit 333 to execute the projecting operation a plurality of times. Therefore, the reciprocating motion of the movable portion 333 can give vibration to the saddle stitch booklet so as to push it up from the inside of the fold portion.

Further, according to the present embodiment, the movable portion 333 includes a plate body 3331 that supports the saddle stitch booklet, and the drive unit 333a moves the plate body 3331 in the vertical direction to perform a projecting operation. Therefore, the force can be applied over a wide range inside the fold portion of the saddle stitch booklet. Therefore, the operation of the movable portion 333 makes it possible to prevent the position of the saddle stitch booklet on the paper support portion 332 from shifting in the Y direction.

Further, according to the present embodiment, the movable portion 333 is provided on the downstream side in the paper transport direction (the side of the paper support portion 332 that does not face the saddle portion 321) with respect to the paper support portion 332. In this regard, if subsequent paper is accumulated in the saddle section 321 while the moving saddle unit U is delivering the saddle stitch booklet to the clamp section 340, the side of the paper support section 332 facing the saddle section 321. If the movable part 333 is provided in the saddle unit 333, there is a concern that the movable saddle unit 333 may collide with the paper accumulated in the saddle part 321 when the moving saddle unit U returns due to the device configuration. It is necessary to provide the moving saddle unit U on the outer side (left side), or to start collecting paper on the saddle portion 321 after the moving saddle unit U returns. On the other hand, by providing the movable portion 333 on the side of the paper support portion 332 that does not face the saddle portion 321, it is not necessary to provide the moving saddle unit U on the outer side (left side), so that the device configuration can be increased. Therefore, it is not necessary to wait for the moving saddle unit U to return and start collecting the paper on the hanging portion 321, so that the productivity can be ensured.

Further, according to the present embodiment, the pedestal portion 331 that conveys the paper supported by the paper support portion 332 and the movable portion 333 by moving the paper support portion 332 and the lifter that lifts and holds the fold portion of the saddle stitch booklet from below. With the plates 341 and 341, the movable portion 333 can be lowered to a retracted position further retracted from the support position of the paper support portion 332, and the movable portion 333 is moved to the retracted position after the saddle stitch booklet is conveyed by the pedestal portion 331. By lowering, the lifter plates 341, 341 can be inserted below the paper supported by the paper support portion 332. Therefore, the saddle stitch booklet can be stably conveyed by being supported by the paper support portion 332 and the movable portion 333, and the saddle stitch booklet can be lifted by lowering the movable portion 333 to the retracted position. It can be lifted efficiently by 341 and 341.

According to the above embodiment, the movable portion 333 provided with the plate body 3331 that operates in the vertical direction has been described as an example, but the movable portion has other configurations as long as it can vibrate the saddle stitch booklet. It may be. For example, as shown in FIG. 9, the movable portion 333A includes a plate body 3332 that supports the saddle stitch booklet and a rotation axis G that is perpendicular to the plate surface of the plate body 3332, and the drive unit 333a holds the plate body 3332. It may be configured to rotate around the rotation shaft G to perform a protruding operation. With such a configuration, since the drive unit 333a only rotates the rotation shaft G, the operation stability of the movable unit 333A is good.

Further, according to the above embodiment, the movable portions 333 and 333A have been described by exemplifying the configuration provided at the end portion (left end portion) of the moving saddle unit U on the side not facing the saddle hook portion 321. For example, as shown in FIG. 10, it is also possible to provide the moving saddle unit U at the end (right end) on the side facing the saddle portion 321.

Further, according to the above embodiment, the plate body 3331 of the movable portion 333 (the plate body 3332 of the movable portion 333A) exemplifies a configuration in which the plate body 3331 of the movable portion 333 retracts slightly downward from the support position of the paper support portion 3332 during the projecting operation. As described above, the top of the plate 3331 of the movable portion 333 may be returned to at least the same height as the support position of the paper support portion 3332 during the projecting operation.

1 Image formation system 100 image forming device 300 Paper processing equipment 320 Saddle stitching 321 Saddle part (1st support part) 330 Transport mechanism U moving saddle unit 331 Pedestal (paper transport) 332 Paper support (2nd support) 333, 333A Moving part 3331, 3332 Plate G rotation shaft 333a drive unit 334 1st holding part 334a Rotating part 335 2nd presser 335a, 335a Arm 335b, 335b contact part 340 Clamp part 341,341 Lifter plate (holding part) 342,342 Holding member 343 Guide wire 505 Paper processing control unit (control unit)