JP2004042326A - Method and equipment for processing paper and system for forming image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently execute side stitching and saddle stitching by using a pair of divided type staplers and by ensuring the relative positional accuracy of the staplers. <P>SOLUTION: A stitcher part and a clincher are constituted integrally or separately. On the occasion when a plurality of paper sheets being present between the stitcher part and the clincher part are stitched by staples, the stitcher part and the clincher part are moved in parallel synchronously in the direction intersecting perpendicularly the direction of carrying the sheets and rotated as they are or on the same axis to execute parallel stitching or diagonal stitching. On the occasion of transfer to the subsequent stitching operation thereafter and in the case of this operation being made at the same position for a paper bundle of the same paper size, the stitcher part and the clincher part return to preset positions being nearer to the stitching positions than the home positions thereof and not impeding carrying-in of the sheets and always move in one direction to the stitching positions to execute the stitching operation. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet processing method and a sheet processing apparatus that perform a predetermined process such as punching, aligning, binding, folding, etc. on a sheet that has been carried in and ejecting the sheet, and the sheet processing apparatus is integrated or separated. The present invention relates to an image forming system including image forming apparatuses such as a copying machine, a printer, a printing machine, and a facsimile provided in the above.
[0002]
[Prior art]
In recent years, in image forming apparatuses such as copiers, fax machines, and printers, various demands for post-processing on paper output from them have increased, and even in stapling processing, a predetermined number of sheets are fed along one edge. In addition to end-face binding, there are many requests for saddle stitching at a plurality of locations (generally two locations) at predetermined intervals along a center line that bisects the paper. In addition to these requirements, functions that were conventionally required for relatively high speed machines, such as saddle stitching, folding, and diagonal binding, are also required for low speed machines. There is a growing need to provide processing equipment.
[0003]
Therefore, for example, an apparatus disclosed in Japanese Patent Laid-Open No. 2000-185868 is known as an apparatus that meets such a requirement. The main object of the present invention is to reduce the load of the driving motor of the sheet post-processing apparatus that enables the sheet sheet corner to be obliquely bound by the stapling means. The stapling means is started to rotate by causing the linear movement driving means and the rotation driving means to cooperate with each other in such a manner that the movement direction by is opposite to the movement direction by the rotation driving means.
[0004]
[Problems to be solved by the invention]
As described above, in the above-described known technique, the split-type stapling means that enables the saddle stitching process enables the oblique binding process, the edge stitching process, and the saddle stitching process to the corner of the paper. Because two sets of front and rear staplers are required, the cost must be high. Further, only the back side stapler can be moved obliquely. However, if the front side stapler is also to be moved obliquely, a mechanism similar to that on the back side is required, and the cost is increased accordingly.
[0005]
In addition, when the stapler moves and performs the binding process, the staple moves in the staple moving mechanism when performing the binding, and this is solved, and in order to secure the relative position accuracy during the stapler binding, the binding is performed. Every time the operation is performed, the stapler is returned to the home position, the position is specified, and the operation is performed by moving to the binding position and binding. For this reason, processing has to take time, and there is a point that should be improved in terms of production efficiency.
[0006]
Accordingly, an object of the present invention is to use a pair of split-type staplers to ensure the relative positional accuracy of the stapler, and to perform end-face binding (front parallel, back parallel, front diagonal, back diagonal, parallel two locations) and saddle stitching. It is an object of the present invention to provide a highly productive paper processing method, paper processing apparatus, and image forming system that can be performed efficiently.
[0007]
Another purpose is to use an integrated stapler to ensure the relative positional accuracy of the stapler and to efficiently perform end-face binding (front parallel / back parallel / front diagonal / back diagonal / parallel two locations). It is an object of the present invention to provide a highly productive paper processing method, paper processing apparatus, and image forming system.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the first means comprises a stitcher portion provided with a staple needle receiving portion and a push-out portion, and a clincher portion for bending the tip of the needle, which are separated from each other, between the two stapler members. In the paper processing method of binding a plurality of papers existing in the paper with a staple needle, the stitcher unit and the clincher unit are respectively moved in parallel in a direction orthogonal to the paper transport direction, and the stitcher unit and the clincher unit When the clincher part is rotated as it is or on the same axis and parallel binding or oblique binding is performed, when the next binding operation is performed, the stitcher part and the clincher part are closer to the binding position than the home position. , Return to a preset position that does not obstruct paper loading, and always move in one direction from the position to the binding position. Dynamic and characterized by performing the binding operation.
[0009]
When the binding operation is performed as in the first means, the play in the moving mechanism of the stitcher unit and the clincher unit is always eliminated in one direction with respect to the binding position, thereby moving to the binding position. Therefore, it is possible to prevent relative displacement between the stitcher portion and the clincher portion.
[0010]
The second means is characterized in that, in the first means, the next binding operation is an operation of binding at the same position with respect to a paper bundle having the same paper size. When binding at the same position for a bundle of paper of the same paper size as in the second means, the binding position is the same, so even if it does not bother to return to the home position and check the position, The binding position can be accurately defined only by control.
[0011]
A third means is characterized in that, in the first means, when there are two binding positions, when the binding operation is finished at one binding position, the next binding operation starts from the one binding position. To do. If configured as the third means, the movement distance is small, so that the processing efficiency becomes higher.
[0012]
According to a fourth aspect of the present invention, a stitcher portion provided with a staple needle accommodating portion and a push-out portion and a clincher portion that bends the tip of the needle are configured separately, and a plurality of sheets existing between the two stapler members are provided. On the other hand, in a paper processing apparatus that performs binding with a staple, the first and second moving bases for parallelly moving the stitcher unit and the clincher unit in synchronization with a direction orthogonal to the paper conveyance direction, First driving means for driving the first and second moving pedestals, and first and second rotating pedestals that are rotatably supported coaxially with respect to the first and second moving pedestals, respectively. Second driving means for synchronously rotating the first and second rotating pedestals, and a moving amount or moving speed of the moving pedestal and the rotating pedestal by the first driving means and the second driving means; Control means for performing parallel binding or oblique binding at a desired position based on the difference, and the control means causes the stitcher to move to the next binding operation after performing parallel binding or diagonal binding. This is a position that is closer to the binding position than the home position of the head and the clincher part, and is moved to a preset position that does not impede the loading of the paper, and is always moved in one direction with respect to the binding position from that position to perform the binding operation. It is made to perform.
[0013]
The fifth means comprises a stitcher portion provided with a staple needle receiving portion and a push-out portion, and a clincher portion that bends the tip end of the needle as separate members, and a plurality of sheets existing between the two stapler members. On the other hand, in a paper processing apparatus that performs binding using staples, first and second moving bases for translating the stitcher unit and the clincher unit in a direction orthogonal to the paper transport direction, and these moving bases are provided. First driving means for driving, first and second rotating pedestals rotatably supported coaxially with respect to the first and second moving pedestals, and the first and second rotating pedestals A second driving means for rotating the first driving means, and a control means for independently controlling the driving of the first driving means and the second driving means to execute parallel binding and diagonal binding at a desired position, When the control means shifts to the next binding operation after performing parallel binding or oblique binding, the control means closes the binding position from the home position of the stitcher portion and the clincher portion, and carries in the paper. It is moved to a preset position that is not obstructed, and is always moved in one direction from the position to the binding position to perform the binding operation.
[0014]
The sixth means comprises a stitcher portion provided with a staple needle receiving portion and a push-out portion, and a clincher portion that bends the tip of the needle facing each other with a paper insertion portion interposed therebetween, and the paper insertion In a sheet post-processing apparatus that binds a plurality of sheets existing between the sections with a staple needle, a moving pedestal for moving the stitcher unit and the clincher unit in parallel in a direction perpendicular to the sheet conveyance direction; First driving means for driving the movable pedestal, first and second rotating pedestals supported coaxially and rotatably with respect to the moving pedestal, and rotating the first and second rotating pedestals Accordingly, the second driving means for rotating the stitcher portion and the clincher portion, and the movement amount of the moving base and the rotating base by the first driving means and the second driving means, or Control means for performing parallel binding or diagonal binding based on the difference in the moving speed, and the control means is configured to perform the next binding operation after the control means performs parallel binding or diagonal binding. Further, the position is moved closer to the binding position than the home position of the stitcher unit and the clincher unit, and is moved to a preset position that does not impede the loading of the paper, and is always moved in one direction from the position to the binding position. And the binding operation is performed.
[0015]
When configured as the fourth to sixth means, similar to the first means, the play in the moving mechanism of the stitcher unit and clincher unit is always eliminated in one direction with respect to the binding position. Thus, it is possible to prevent relative displacement between the stitcher portion and the clincher portion when the stitcher portion is moved to the binding position.
[0016]
The seventh means is characterized in that, in the fourth to sixth means, the next binding operation is an operation of binding at the same position with respect to a sheet bundle of the same paper size. According to the seventh means, the binding position is the same when binding a sheet bundle of the same sheet size at the same position, so it is not necessary to return to the home position and check the position. The binding position can be accurately defined only by controlling the motor. For this reason, it is preferable to use a stepping motor that can easily control the position by the number of steps.
[0017]
According to an eighth means, in the fourth to sixth means, when there are two binding positions, when the binding operation is finished at one binding position, the next binding operation starts from the one binding position. It is characterized by. If configured as the eighth means, the movement distance is small, so that the processing efficiency becomes higher.
[0018]
The ninth means is characterized in that the sheet processing apparatus according to the fourth to eighth means and the image forming apparatus for forming a visible image on a recording medium are combined integrally or separately to constitute an image forming system. To do. In the ninth means, since the image forming system is constituted by the paper processing apparatus and the image forming apparatus according to the fourth to eighth means, the ninth means is larger than the image-formed paper discharged from the image forming apparatus. It is possible to secure the relative positional accuracy of the stapler without lowering the productivity, and to achieve end-face binding (front side parallel, back side parallel, front side diagonal, back side diagonal, parallel two places) and saddle stitching.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0020]
1. overall structure
FIG. 1 is a diagram showing a schematic configuration of an image forming system according to an embodiment of the present invention. In FIG. 1, an image forming system according to the present embodiment includes an image forming apparatus 1, a paper feeding apparatus 2 that supplies paper to the image forming apparatus 1, and an image reading apparatus (hereinafter referred to as a scanner) 3 for reading an image. , A circulation type automatic document feeder (hereinafter referred to as ARDF) 4 for feeding a document to the scanner 3, a post-processing device 5 having post-processing functions such as a staple and punch function, and a transport / stack device 6. . In this system, the image forming apparatus 1 is positioned on the paper feeding apparatus 2, the scanner 3 is positioned on the image forming apparatus 1, and the post-processing apparatus 5 is disposed in the space between the scanner 3 and the image forming apparatus 1. Has been. The ARDF 4 is located above the scanner 3. If ARDF 4 is not provided, ARDF 4 is simply removed from FIG. 1 as shown in FIG. The post-processing device 5 performs post-processing such as punching, stapling (end-stitching, saddle-stitching), etc., on a sheet on which an image has been formed and discharged from the image forming apparatus 1. The conveyance / stacking device 6 is located on the side surface of the main body of the image forming apparatus 1 and conveys and stacks the sheets post-processed by the post-processing device 4. As shown in FIG. 1, a general transfer sheet flow is in the order of the sheet feeding device 2 → the image forming apparatus 1 → the post-processing device 5 → the transport stack device 6.
[0021]
2. Post-processing equipment
FIG. 3 is a diagram showing details of the post-processing apparatus.
[0022]
The post-processing device 5 according to the present embodiment does not perform post-processing on the paper, and transports the paper to the transport / stack device 6, as well as punches the paper, aligns the paper, and staples the sheets (end face binding / saddle binding). ), And a post-processing such as half-folding for folding the saddle-stitched sheet from the center and transporting it to the transport / stack device 6.
[0023]
The paper on which the image is formed by the image forming apparatus 1 is discharged from the image forming apparatus 1 by the main body discharge roller pairs 102 and 102 ′ and is sent to the inlet roller pairs 104 and 104 ′ of the post-processing device 5. A punch unit 103 is provided on the downstream side of the inlet roller pair 104, 104 ′ in the sheet conveying direction, sandwiched between the inlet roller pair 104, 104 ′ and the conveying rollers 105, 105 ′. Punch processing is performed. As the punch unit 103, for example, a rotary punch or a press punch is used. Further, a switching claw 106 is provided immediately after the conveyance rollers 105 and 105 ′ in the sheet conveyance direction. The switching claw 106 is switched to a solid line position when the staple process is not performed and to a two-dot chain line position when the staple process is performed. Is set, swings as necessary, and switching is performed.
[0024]
In the case of not stapling, the sheet is conveyed to a conveyance / discharge device 6 to be described later via a conveyance roller pair 116, 116 'and a discharge roller pair 117, 117'. On the other hand, when stapling is performed as end-face binding, the leading edge of the sheet is guided from the conveying roller pairs 105 and 105 ′ to the staple tray 108 by the switching claw 106. That is, when the trailing edge of the sheet comes out from the nip between the conveying rollers 105 and 105 ′, the trailing edge of the sheet is guided toward the staple tray 108 by the trailing edge dropping roller 107. Almost simultaneously with the above operation, the sheet is moved toward the rear end fence 114 by the tapping roller 115 (the position of the one-dot chain line in FIG. 3), and the rear end of the sheet hits the rear end fence 114. Stop at. The rear end fence 114 is provided on a belt 113 stretched between the pulleys 111 and 112, and is controlled by a pulse motor (not shown). The rear end fence 114 detects the home position by the sensor SN2, and waits at a position for aligning the paper (near the rear end dropping roller 107).
[0025]
In this way, the paper that has been waiting with the rear edge of the paper in contact with the rear edge fence 114 is aligned in the direction perpendicular to the paper conveyance direction by the jogger fence 109, and the paper is placed in a predetermined position (the conveyance direction is the rear direction). The position of the end fence 114 and the direction perpendicular to the transport direction are aligned with the position of the jogger fence). By repeating this operation for each conveyed sheet, the sheets are stacked on the staple tray 108 in a state where the conveying direction is aligned with reference to the rear end fence 114. Next, the aligned sheet bundle is conveyed in the direction of the stapler 118 by the rear end fence 114, and temporarily stops at a predetermined position 114 ′. Then, the bundle conveying roller 122 advances onto the staple tray 108 to the position of the two-dot chain line, and sandwiches the sheet bundle with the conveying roller 116, so that the sheet is placed at a predetermined position (generally 6 mm from the end face). ).
[0026]
After that, staple processing is performed on the end of the sheet bundle by the staplers 118 and 118A, and the bundle of sheets after the staple processing is directed to the sheet discharge rollers 117 and 117 ′ by the bundle conveyance roller 122 and the conveyance roller 116. It is transported and transported to the transport / stack device 6. When binding at one location, the stapler 118, 118A is moved diagonally by the rotation means of the stapler 118, 118A at the position of the end of the sheet in accordance with the width of each sheet by the moving mechanism described later if the diagonal binding is necessary. The In the case of two-point binding, the staplers 118 and 118A move in parallel in a direction orthogonal to the sheet conveyance direction, and perform stapling processing at two predetermined positions.
[0027]
On the other hand, when the saddle stitching is performed by the staplers 118 and 118A, the same as the case of the end binding is performed until the sheets are aligned, but the saddle stitching is performed by changing the feeding amount of the rear end fence 114 of the aligned sheet bundle. Has been done. Specifically, the sheet bundle is conveyed by the rear end fence 114 in the sheet conveying direction until the staples of the staplers 118 and 118A are positioned at the center of the sheet. Next, staple processing similar to edge binding is performed by the staplers 118 and 118A, and a sheet bundle is pushed in the direction of the sheet discharge roller 117 by the rear end fence 114 and the bundle conveyance roller 122, and conveyed to the sheet discharge roller pair 117 and 117 ′.
[0028]
A folding conveyance path 123 and a folding plate 119 are provided on the front side in the paper direction of the paper discharge roller pairs 117 and 117 ′, and the folding conveyance path 123 is provided with folding roller pairs 120 and 121 and a sensor SN4. It has been. Therefore, when the center of the sheet is conveyed to the folding surface of the folding plate 119, the extrusion of the sheet is stopped, and the sheet bundle is pushed toward the folding roller 120 by the folding plate 119. 120, 121, and then sent to the paper discharge tray via the folding conveyance 123 and stacked. When the sheet bundle is started to be folded, the leading end side of the sheet bundle is sandwiched between the nips of the pair of discharge rollers 117 and 117 ′, and has a function of pressing the sheet when folded by the folding plate 119. .
[0029]
A sensor SN1 provided in the sheet conveyance direction of the entrance roller pair 104, 104 ′ is an entrance sensor, and detects the conveyance timing of the sheet from the image forming apparatus 1 side by detecting the leading edge of the sheet, and also detects the sheet. The paper size is also detected by detecting the trailing edge. A sensor SN3 provided on the downstream side in the sheet conveyance direction of the pair of sheet discharge rollers 117 and 117 ′ is a sheet discharge sensor, and a sheet conveyance / stacking apparatus for sheets that have not been subjected to binding processing and sheets that have been bound at the end of the sheet. 6 detects the state of paper discharge to the upper paper discharge tray 601. The sensor SN4 provided in the folding conveyance path 123 detects the discharge state of the sheet bundle that has been subjected to the folding process.
[0030]
3. Transport / stack equipment
FIG. 4 is a diagram showing details of the transport / stack device 6, FIG. 4 (a) is a schematic configuration of the transport / stack device 6, FIG. 4 (b) is a configuration of the paper discharge unit, and FIG. The structure of the shift mechanism is shown respectively.
[0031]
The transport / stack device 6 includes an upper paper discharge tray 601, a paper discharge mechanism 610 (FIG. 4A) that discharges paper to the upper paper discharge tray 601, and an elevating mechanism 620 that lifts and lowers the upper paper discharge tray 601 ( 4B) and a shift mechanism 640 (FIG. 4C) that moves the upper paper discharge tray 601 in a direction orthogonal to the paper transport direction. That is, the upper paper discharge tray 601 functions as a shift tray.
[0032]
The paper discharge mechanism 610 is mainly composed of a paper discharge guide plate 611 and a paper discharge roller 612. The paper discharge guide plate 611 has a swing fulcrum 613 on the upstream side of paper conveyance, and a paper discharge driven roller 614 on the other end side. The paper discharge guide plate 611 moves in the closing direction when a conveyance force is required for the paper or the sheet bundle, and sandwiches the paper or the paper bundle by the paper discharge roller 612 and the paper discharge driven roller 614. Then, the paper discharge driven roller 614 is moved away from the sheet or sheet bundle by moving in the opening direction.
[0033]
The elevating mechanism 620 elevates and lowers the upper discharge tray 601 along the end fence 621 provided in the vertical direction on the outermost part of the transport / stack device 6. The elevating mechanism 620 is provided vertically in parallel with the inner side of the end fence 621. A pair of timing belts 622, timing pulleys 623 and 623 ′ disposed on the upper and lower ends of each of the timing belts 622, and a driving force that transmits a driving force to the upper timing pulley 623. The shaft 633 includes a reduction gear train that is attached to the drive shaft 633 and transmits a driving force to a gear that rotates integrally, and an upper and lower motor 627 that applies the driving force to the reduction gear train. On the main body side of the transport / stack device 6, a paper surface detection sensor 628, a shift (upper discharge) tray upper limit sensor 629, an upper shift tray lower limit sensor, and lower 630 and 631 are provided.
[0034]
In the paper surface detection sensor 628, one end of the paper surface detection filler 632 comes into contact with the uppermost paper surface on the upper discharge tray 601 and detects the position of the other surface to detect the position of the paper surface. The upper discharge tray upper limit sensor 629 detects that a part of the upper discharge tray 601 has come into contact, and detects the upper movement limit of the upper discharge tray 601. The upper discharge tray lower limit sensors upper 630 and lower 631 detect the lower limit of the upper discharge tray 601 in the downward direction. The upper discharge tray 601 temporarily moves downward to free up the paper discharge space. After securing and discharging a predetermined number of sheets, the sensor rises and the paper surface detection sensor 628 detects the height of the paper surface, so sensors are provided in two stages. These sensors 630 and 631 are determined to be at the lower limit when the lower limit sensor upper 630 is not turned ON when the lower limit sensor lower 631 is turned ON and the upper discharge tray 601 is raised.
[0035]
The shift mechanism 640 sorts the paper for each job. For example, the upper discharge tray 601 is orthogonal to the paper conveyance direction for each operation (job) that takes one copy when copying 10 copies of 10 originals. For example, about 20 mm is moved in the direction to perform sorting for each copy. The movement perpendicular to the paper transport direction transmits the rotation of the shift motor 641 from the worm gear 642 to the crank gear 643 including a worm wheel, and the crank provided on the crank gear 643 is provided on the inner side of the end fence 621. And the rotational motion of the crank gear 643 is converted into the linear motion of the end fence 621. In this case, a home position detection sensor 646 is provided to detect the rotational position of the crank gear 643, and the rotational position of the crank gear 643 is controlled by detecting two notches 647 provided in the crank gear 643.
[0036]
Further, in the transport / stack device 6 according to this embodiment, in addition to the paper discharge tray 601, a lower paper discharge tray 602 is located below the paper discharge tray 601 as shown in FIG. It is provided so as to be located further below the 123 outlet. Since the lower discharge tray 602 is discharged in a folded state, the shift mechanism is unnecessary, and although only the lifting mechanism is not shown, a lower limit sensor and a paper surface not shown are provided. With the sensor, a sheet bundle folded in the range of a predetermined elevation width can be received.
[0037]
4). Stapler moving mechanism
4.1 Outline of moving mechanism
FIG. 5 shows the configuration of the staplers 118, 118A and their drive mechanisms, as viewed from a direction parallel to the paper transport direction.
[0038]
The stapler includes a stitcher unit 118 and a clincher unit 118A, which are arranged between a front plate 250 and a rear plate 251 of the main body of the post-processing apparatus 5 in a direction orthogonal to the sheet conveying direction, respectively. , 215, 207, and 216, and one slide shaft 206 and 205 that are respectively provided so as to be movable or loosely fitted. The stitcher portion 118 obtains a driving force by the spiral shafts 208 and 215, and the clincher portion 118A obtains a driving force by the spiral shafts 207 and 216. Further, as shown in the perspective view of the stapler (stitcher portion 118, clincher portion 118A) in FIG. 6, a part of the stitcher portion 118 is loosely fitted to the slide shaft 206, and a part of the clincher portion 118A is loosely fitted to the slide shaft 205. Then, they move along the slide shafts 206 and 205 in the direction perpendicular to the sheet conveyance. Further, slide guides 231 and 230 are similarly provided in a direction orthogonal to the sheet conveyance direction, and restrict movement of the other part of the stitcher unit 118 and the other part of the clincher unit 118A around the axis.
[0039]
The spiral shafts 215 and 216 are driven by a reduction gear train 222 and timing pulleys 220B and 220A by a driving force of a stepping motor (hereinafter also referred to as a rotation base drive motor) 223 provided on the outside (front side) of the front plate 250. It is transmitted by the laid timing belt 219 and rotates in the same direction synchronously. Further, the spiral shafts 208 and 207 are transmitted by the timing belt 209 over which the driving force of the stepping motor 213 provided on the outer side (rear side) of the rear plate 251 is stretched over the reduction gear train 212 and the timing pulleys 210B and 210A. And rotate in the same direction synchronously.
[0040]
4.2 Details of the clincher part
FIG. 7 is a plan view of the clincher portion 118A, and FIG. 8 is a side view of a cross section of the main part of the clincher portion 118A.
[0041]
In this embodiment, the staplers 118 and 118A are of a type in which a stapler 118 provided with a staple needle accommodating portion and a pushing portion is separated from a clincher portion 118A that bends the tip of the needle.
[0042]
The clincher portion 118A is fixed to a rotation base 221 as a rotation base as shown in FIGS. 6, 7, and 8, and a shaft 224 that is a rotation center of the rotation base 221 is fixed to the rotation base 221 so as to rotate. It is connected to a moving base 201 as a moving pedestal as possible. A fan-shaped filler 225 for detecting the tilt state of the rotation base 221 is fixed to the shaft 224 and rotates in synchronization with the rotation of the rotation base 221. This rotation is detected by detecting the filler 225 with the sensor SN6, thereby detecting the home position (the position of flat stitching) and the tilt direction (whether in the back diagonal state or the front diagonal state). The rotation base 221 is provided with a long hole 221A symmetrically with respect to an axis 224A passing through the center of the rotation shaft 224.
[0043]
The spiral shaft 216 is provided in the vicinity of the rotation base 221 over the stapler moving range, and the spiral shaft 216 is provided with a slider 217 as an engaging portion that fits the spiral shaft 216, and the slider 217. Are provided with a pin-shaped protrusion 217A that loosely fits into the elongated hole 221A of the rotation base 221 and a pin-shaped protrusion 217B (FIG. 8) for preventing rotation. A spiral groove that corresponds to the spiral shape of the spiral shaft 216 and converts the rotational motion of the spiral shaft 216 into a linear motion is formed on the inner surface of the slider 217. As a result, the slider 217 moves in a direction orthogonal to the paper transport direction while maintaining the posture as the spiral shaft 216 rotates.
[0044]
The protrusion 217B is loosely fitted in a groove provided in a slide guide 230 provided in parallel with the vicinity of the spiral shaft 216. Further, the slide guide 230 is formed to have a planar shape 230A in which one side surface of the cross section substantially comes into contact with the rotation base 221 and has a function of receiving an impact at the time of staple driving on the flat surface 230A (see FIGS. 11 and 12 described later). Corresponding to the shaded area of
[0045]
Further, since the elongated hole 221A and the protrusion 217A are loosely fitted, the rotation base 221 rotates about the shaft 224 as the slider 217 moves. As described above, the spiral shaft 216 is connected to the spiral shaft 215 on the stitcher unit 118 side through the timing belt 219 and the timing pulleys 220A and 220B, and is driven by the stepping motor 223 through the reduction gear train 222. As a result, the clincher unit 118A and the stitcher unit 118 rotate in synchronization with the rotation shafts 224 and 232 as the stepping motor 223 rotates.
[0046]
On the other hand, the movement base 201 is inserted into the slide shaft 205 so as to be movable in a direction orthogonal to the transport direction. Further, a member 202 fitted to a spiral shaft 207 provided in parallel to the slide shaft 205 is fixed to the other side of the moving base 201, and the clincher portion 118 </ b> A moves along the slide shaft with the rotation of the spiral shaft 207. Translate along 205. Also in this case, the inner surface of the member 202 is formed with a spiral groove corresponding to the spiral shape of the spiral shaft 207 and converting the rotational motion of the spiral shaft 207 into linear motion. The member 202 is provided with a filler 202A for detecting the home position, and the home position is detected by SN5.
[0047]
Further, the spiral shaft 207 for moving the clincher portion 118A is connected to the spiral shaft 208 on the stitcher portion 118 side via the timing belt 209 and the timing pulleys 210A and 210B as described above, and via the reduction gear train 212. Are driven by a stepping motor 213. As a result, the clincher portion 118A and the stitcher portion 118 are moved in parallel on the slide shafts 206 and 205 by the rotation of the stepping motor 213. Further, the movement distance in the direction orthogonal to the transport direction is detected by detecting the home position by the home position sensor SN5 and detecting the number of drive pulses of the stepping motor 213 therefrom.
[0048]
4.3 Details of stitcher
FIG. 9 is a side view showing a cross-section of the main part of the stitcher portion 118, and FIG. 10 is a bottom view of the stitcher portion 118. The stitcher unit 118 is disposed symmetrically with respect to the clincher unit 118A and the sheet conveyance path.
[0049]
The stitcher unit 118 is fixed to the rotation base 222 as shown in FIGS. 9 and 10, and the rotation base 222 is fixed with a shaft 232 serving as the rotation center of the rotation base 222. It is connected to the. The rotation base 222 is provided with a long hole 222A symmetrically with respect to an axis 232A passing through the center of the rotation shaft 232.
[0050]
The spiral shaft 215 is provided in the vicinity of the rotation base 222 over the stapler moving range, and the spiral shaft 215 is provided with a slider 218 as an engaging portion that fits the spiral shaft 215, and the slider 218. Are provided with a pin-shaped protrusion 218A that loosely fits into the elongated hole 222A of the rotation base 222 and a pin-shaped protrusion 218B for preventing rotation. A spiral groove that corresponds to the spiral shape of the spiral shaft 215 and converts the rotational motion of the spiral shaft 215 into a linear motion is formed on the inner surface of the slider 218. As a result, the slider 218 moves in a direction orthogonal to the paper transport direction while maintaining the posture as the spiral shaft 215 rotates. In addition, since the slider 218 cannot move unless the spiral shaft 215 rotates, the slider 218 does not move even if an axial force of the spiral shaft 215 is applied to the slider 218. For this reason, as will be described later, even when a reaction force accompanying the binding is applied during the binding operation by the staplers 118 and 118A, the binding position of the staplers 118 and 118A is not affected. In this embodiment, the spiral groove for converting the rotational motion of the spiral shaft 215 into a linear motion is formed. However, the groove of the spiral shaft 215 may be a ball groove, and the ball may be held on the slider 218 side.
[0051]
The protrusion 218B is loosely fitted in a groove provided in a slide guide 231 provided in parallel with the vicinity of the spiral shaft 215. Further, the slide guide 231 has a planar shape 231A in which one side surface of the cross section substantially comes into contact with the rotation base 221 and has a function of receiving an impact at the time of staple driving on the flat surface 231A.
[0052]
In addition, since the elongated hole 222 </ b> A and the protrusion 218 </ b> A are loosely fitted, the rotation base 222 also rotates about the shaft 232 as the slider 218 moves. As described above, the spiral shaft 215 is connected to the spiral shaft 216 via the timing belt 219 and the timing pulleys 220A and 220B, and is driven by the stepping motor 223 via the reduction gear train 222, whereby the clincher portion 118A. The stitcher 118 rotates in synchronization with the rotation shafts 224 and 232 as the stepping motor 223 rotates. As shown in FIGS. 11 and 12, the rotation angle of the rotation base 201 of the clincher portion 118A at this time is θ1, the clockwise rotation angle is θ2, and the angle of the stapler is changed in the range of θ1 + θ2. Is possible. Further, the displacement amounts at this time are d1 and d2, respectively. The stitcher unit 118A operates in the same manner as the clincher unit 118A shown in FIGS. 11 and 12, and drives the needle at the same angle.
[0053]
On the other hand, the moving base 203 is inserted into the slide shaft 206 so as to be movable in a direction orthogonal to the transport direction. Further, a member 204 that is loosely fitted to a spiral shaft 208 provided in parallel to the slide shaft 206 is fixed to the other side of the moving base 203. As the spiral shaft 208 rotates, the stitcher portion 118 moves to the slide shaft. Translate along 206. Also in this case, the inner surface of the member 204 is formed with a spiral groove corresponding to the spiral shape of the spiral shaft 208 and converting the rotational motion of the spiral shaft 208 into linear motion. In addition, as described above, the relationship between the ball and the ball groove can also be configured.
[0054]
Further, the spiral shaft 208 for moving the stitcher unit 118 is connected to the spiral shaft 207 via the timing belt 209 and the timing pulleys 210A and 210B as described above, and by the stepping motor 213 via the reduction gear train 212. Driven. As a result, the clincher portion 118A and the stitcher portion 118 are moved in parallel on the slide shafts 206 and 205 by the rotation of the stepping motor 213.
[0055]
The filler 202A for detecting the home position is provided on the clincher portion 118A side, and the home position is detected on the clincher side, so that the one corresponding to the filler 202A is not provided on the stitcher portion 118 side. In addition, since the rotation base 222 also rotates in synchronization with the rotation base 221 on the clincher side 118A, there is no one corresponding to the filler 225.
[0056]
5. Control configuration
FIG. 13 is a block diagram mainly showing an electrical configuration of the post-processing apparatus 5 according to the present embodiment. Here, the configuration including the image forming apparatus 11, the post-processing apparatus 6, and the relay apparatus 7 is shown with the paper feeding device 2, the scanner 3, and the ARDF 4 omitted.
[0057]
The relay device 7 has a function of relaying paper when the paper is transported from the image forming apparatus 1 to the post-processing device 5, and corresponds to the punch unit 103 provided as a post-processing function here. . The relay device 7 includes a punch sensor 701, a punch motor 702, a motor driver 703 for the punch motor, and a drive solenoid 704 for the switching claw 106. The punch motor 702 is driven by the instruction from the image forming apparatus 1 side to make a hole. The solenoid 704 is driven according to whether or not the binding process is performed, and the switching operation of the switching claw 106 is executed. The punching timing is determined based on the detection timing of the leading edge of the sheet from the entrance sensor SN1, and the punch position is detected by the punch sensor 701.
[0058]
The post-processing device 5 is provided with a CPU 150 and an I / O 151, and the CPU 150 and the I / O 151 are connected by a bus. The CPU 150 is connected to a control device (CPU) of the image forming apparatus 1 and controls each part and the whole of the post-processing device 5.
[0059]
The CPU 150 has a solenoid 153, 154, 155, a first vertical motor 627 that raises and lowers the upper paper discharge tray 601, a second vertical motor 157 that raises and lowers the lower paper discharge tray 602, and a shift that shifts the upper paper discharge tray 601. A motor 641, an entrance roller pair 104, 104 ′, a transport roller pair 105, 105 ′, 116, 116 ′, and a paper discharge motor 159 for driving the paper discharge roller pair 117, 117 ′ are connected. . Further, in the I / O 151, the staple motor 160 that performs the operation of binding the bundle of sheets by the staplers 118 and 118A, the discharge motor 161 that drives the paper discharge (discharge) roller pair 612 and 614, and the staplers 118 and 118A are translated. Stepping motor (hereinafter also referred to as a movement base drive motor from the function) 213, jogger fence 109 for changing the angle of the paper in the direction orthogonal to the paper direction, jogger motor 163, and changing the angle of the stapler (stitcher 118, clincher 118A) An angle change motor (rotation base drive motor) 223 is connected to output a drive signal. In addition, signals from each sensor and SW are input to the I / O 151 and transmitted to the CPU 150. Each motor is provided with a motor driver 156 in the preceding stage, and the clock generated by the clock generation IC 164 is input to the transport motor 158 and the paper discharge motor 159. In addition, a driving clock is input from the CPU 150 to each motor driver 156 to the movement base drive motor 213, the jogger motor 163, and the angle change motor (rotation base drive motor) 223.
[0060]
6). Action
The basic operation of the binding process in this embodiment is as follows. Since the clincher unit 118A and the stitcher unit operate synchronously, the clincher unit 118A will be described for easy understanding.
[0061]
6.1 One end parallel binding
(1) Detection of the home position of the rotation base 221
The rotation base moving motor 223 is driven to move the rotation base 221 so that the staples of the stapler are parallel to the direction orthogonal to the paper transport direction.
(2) Detection of the home position of the movement base 201
Until the sensor SN5 detects the filler 202A of the movement base 201, the movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven to move the movement base 201 and the rotation base 221.
(3) Move to the edge of the paper
Based on the paper size signal, the movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven so that the staple position is at the sheet edge, and the movement base 201 and the rotation base 221 are moved.
(4) Staple operation
When the movement base 201 and the rotation base 221 move to the staple position at the end, a staple is driven into the end of the sheet.
(5) Next time when the same job is continuously performed again
The movement base drive motor 213 and the rotation base movement motor 223 are reciprocated within a range not enough to return to the home position, returned to the same position, and the backlash of the movement mechanism unit is moved in one direction before the stapling operation is performed. In this reciprocating operation, a minimum moving amount that can bring back the backlash of the moving mechanism portion generated by the stapling operation in one direction is sufficient. The movement is performed by driving the stepping motor with a preset number of pulses.
[0062]
6.2 Binding at one diagonal end
(1) Detection of the home position of the rotation base 221
The rotation base moving motor 223 is driven to move the rotation base 221 so that the staples of the stapler are parallel to the direction orthogonal to the paper transport direction.
(2) Detection of the home position of the movement base 201
The movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven until the sensor SN5 detects the filler 202A of the movement base 201.
(3) Move to the edge of the paper
Based on the paper size signal, the movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven so that the staple position is at the sheet edge, and the movement base 201 and the rotation base 221 are moved.
▲ 4 ▼ diagonal movement
The rotation base moving motor 223 is driven so that the staples of the staplers 118 and 118A are at a predetermined angle (45 °).
(5) Staple operation
With the staplers 118 and 118A rotated 45 times, staples are driven into the edge of the sheet.
(6) Next time when the same job is continuously performed again
The movement base drive motor 213 and the rotation base movement motor 223 are reciprocated within a range not enough to return to the home position, returned to the same position, and the backlash of the movement mechanism unit is moved in one direction before the stapling operation is performed. In this reciprocating operation, a minimum moving amount that can bring back the backlash of the moving mechanism portion generated by the stapling operation in one direction is sufficient. The movement is performed by driving the stepping motor with a preset number of pulses.
[0063]
6.3 Binding at two locations on the edge and center of the paper
(1) Detection of the home position of the rotation base 221
The rotation base drive motor 223 is driven to move the rotation base 221 so that the staples of the staplers 118 and 118A are parallel to the direction orthogonal to the sheet conveyance direction.
(2) Detection of the home position of the movement base 201
The movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven until the sensor SN5 detects the filler 202A of the movement base 201.
(3) Move to the first binding position
The movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven by the paper size signal so that the staple position becomes the predetermined first binding position, and the movement base 201 and the rotation base 221 are moved to the first binding position. Let
▲ 5 ▼ Staple operation (1st place)
A staple is driven into the first binding position at the end of the paper.
(6) Move to the second binding position
The movement base drive motor 213 and the rotation base movement motor 223 are simultaneously driven to move the movement base 201 and the rotation base 221 to the second binding position so that the staple position becomes the predetermined second binding position based on the paper size signal. Let
▲ 7 ▼ Taple operation (second place)
A staple is driven into the second binding position at the end of the paper.
(8) Next time when the same job is continued again
The movement base drive motor 213 and the rotation base movement motor 223 are simultaneously operated to return the stapler to a position slightly before the first binding position or the second binding position, and then moved to the first binding position or the second binding position. In this manner, the stapling operation is performed after the backlash of the moving mechanism unit is moved in one direction. This reciprocating operation may be a minimum amount of movement that can move the backlash of the moving mechanism section generated by the stapling operation in one direction. The movement is performed by moving the stepping motor with a preset number of pulses. In addition, the continuous operation at the time of two-point binding may be any of the first, second, second, first, second, first, second order.
[0064]
In this way, the relative positions of the engaging portions (sliders 217 and 218) of the drive means for moving the rotation bases 221 and 222 and the movement bases 201 and 203 are controlled, and d1 in FIG. 11 and FIG. As in d2, the rotation bases 221 and 222 can be rotated at the same angle with respect to the movement bases 201 and 203, and thereby, the posture of parallel binding and oblique binding can be taken at an arbitrary position (paper width direction). Can do. The difference in relative position can be set by the difference in movement distance or the difference in movement speed at the same time.
[0065]
This is because rotation bases 221 and 222 are integrally formed, and movement bases 201 and 203 are formed integrally, and even when a stapler (stitcher 118 and clincher 118A) in which both are rotatably coupled is used. If the drive means on the base side and the moving base side are configured as described above, it means that the rotating base side and the moving base side can be configured to rotate relative to each other due to the difference in relative position. . However, in such a configuration, it is a matter of course that only end-face binding can be performed, and at the time of paper discharge, the stapler 118 is retracted from outside the paper discharge range, or at a position where it does not interfere with the rear-end fence. It needs to be configured to save.
[0066]
In this embodiment, the staples 118 and 118A are moved based on the spiral shaft. However, the staples 118 and 118A may be fixed and moved on a timing belt stretched between two conventional pulleys. it can.
[0067]
7). control
The control procedure for operating as described above is shown in the flowcharts of FIGS.
[0068]
7.1 Initial processing
FIG. 14 is a flowchart showing an overall control procedure of the initial operation. The initial operation is performed when the power is turned on or when the door is closed in order to specify the initial position of the rotation base 221 and to specify the initial position of the movement base. That is, when the power is turned on or when the door is opened and closed, the home position (rotation position) detection operation of the rotation base 221 is executed (step S101), and then the home position of the movement base 201 (paper conveyance) A detection operation of a movement position in a direction orthogonal to the direction is executed (step S102). Detection of the home position of the movement base 201 is performed by the sensor SN5, and detection of the home position of the rotation base 221 is performed by the sensor SN6.
[0069]
FIG. 15 is a flowchart showing details of the home position detection operation (initial process) of the rotation base 221 in step S101. In this process, first, it is checked whether or not the rotational pace home position sensor SN6 detects the filler 225 and is ON (step S201). If it is ON, the sensor SN6 is ON if it is OFF. The rotation base drive motor 223 is rotated in the forward direction until it becomes (step S203), and the rotation base drive motor 223 is rotated in the reverse direction until the sensor SN6 is turned off (step S203). This state is the state of FIG. As shown in FIGS. 11 and 12, the rotation base 221 rotates, but the rotation angles, for example, θ1 and θ2, count the number of steps of the rotation base drive motor 223 from the home position, and control the number of steps. It can be set arbitrarily and accurately.
[0070]
FIG. 16 is a flowchart showing details of the home position detection operation (initial processing) of the movement base 201 in step S102. In this process, first, it is checked whether or not the movement base home position sensor SN5 detects the filler 202A and is ON (step S301), and if it is ON, the sensor SN5 is ON if it is OFF. The movement base drive motor 213 and the rotation base drive motor 223 are rotated forward until the sensor SN5 is turned off until the sensor SN5 is turned off (step S303). This state is the state of the one-dot chain line in FIG. The moving base driving motor 213 and the rotating base driving motor 223 are set to speeds at which the moving base 201 and the rotating base 221 move in parallel without changing their relative positions.
[0071]
7.2 Binding processing
FIG. 17 is a flowchart showing the processing procedure of the overall binding operation of the post-processing apparatus according to this embodiment. Since the operation itself is as described in the above-mentioned section of operation 6, the overlapping description is omitted here.
[0072]
When performing the binding operation, first, the home positions of the rotation base 221 and the movement base 201 are detected (steps S401 to S404). This process itself is the initial process shown in FIGS. 15 and 16 described above. When the initial process is completed, the size data of the paper to be processed is obtained from the image forming apparatus 1 side (step S405), and the process is changed according to the binding type instructed from the image forming apparatus 1 side (step S406). .
[0073]
If the designated binding type is one-point binding (step S406-Y), it is further checked whether parallel binding or diagonal binding is performed (step S407). Is rotated at an angle for oblique binding (step S408), and the stapler 118 is moved to the binding position (step S409). Then, the binding operation is executed at the moved position (step S410). This binding operation includes a paper receiving and aligning operation, a binding operation by a staple binding motor, and a paper discharge operation for discharging the bound paper bundle.
[0074]
After discharging the bound sheet bundle in this way, it is checked whether the next binding operation, that is, whether the next job is in the same mode (step S411). The job referred to here is, for example, an operation of binding one original and binding it into a plurality of copies, for example, five copies. This includes the work of taking one or more bundles. In any case, if the processing in step S411 is the same mode, that is, if the parallel binding method or the diagonal binding method is the same and the binding position is the same, it is determined that the next job is in the same mode (step S411-Y). ), The backlash removing operation of the above-described 6.1- <5> or 6.2- <6> stapler moving mechanism is executed (step S412), and the position is moved to the binding position and the same as step S410. The binding operation is performed (step S413). If it is not the same mode in step S411, the process returns to execute the next binding operation.
[0075]
When one binding operation is completed, the same check as in step S411 is further performed in step S414, and if it is the same mode, it is determined that the next job is in the same mode (step S414-Y), and the process returns to step S412. Then, the backlash removal operation of the above-described 6.1- <5> or 6.2- <6> is performed, and the stapler moves from that position to the binding position and performs the same binding operation as in step S410. (Step S413). If it is not the same mode in step S414, the process returns to execute the next binding operation.
[0076]
On the other hand, if the single binding is not performed at step S406, the staplers 118 and 118A are moved to the first binding position (step S415), and the first binding operation is executed at the first binding position (step S416). Next, the staplers 118 and 118A are moved to the second binding position (step S417), and the second binding operation is executed at the second binding position (step S418). When the two binding operations are completed, it is checked in step S419 whether or not the next job is in the same mode, and if it is not the same mode, the process returns. If it is the same mode, the second of 6.3-8 described above. The backlash removal operation of the stapler moving mechanism is executed at the binding position (step S420). Then, after the second binding operation is executed from that position (step S421), the stapler moving mechanism is moved to the first binding position to perform the backlash removal operation (step S422), and the first binding operation is performed at the first binding position. It executes (step S423). Since the two-point binding has been completed, it is checked whether or not the next job is in the same binding mode (step S424). If it is not the same binding mode, the process returns. If it is the same binding mode, the stapler moves at the first binding position. The backlash removal operation of the mechanism is executed (step S425), and the binding operation is performed at the first binding position (step S426).
[0077]
Next, the stapler mechanism moves to the second binding position to execute the backlash removal operation (step S427), and the second binding operation is performed (step S428). When the second binding operation is completed, it is checked whether or not the next job is in the same mode (step S429). If the same mode is not selected, the process returns. If it is the same mode, the process returns to step S420 to remove the play from the second binding position. And repeat the same operation.
[0078]
In this way, if the job after binding one copy is in the same mode as the previous job, control is performed so that the stapler 118, 118A can perform the minimum movement after binding, and the accuracy of the binding position is ensured. In this way, it is possible to efficiently perform paper processing.
[0079]
In this embodiment, since the stitcher unit 118 and the clincher unit 118A are provided separately, the rear end fence is used for both the case where the binding process is performed on the edge of the sheet and the case where the binding process is performed on the center part of the sheet. It is possible to cope with this by simply controlling the position 114 and changing the relative position between the sheet bundle and the binding position.
[0080]
As described above, both the movement base drive motor 213 and the rotation base drive motor 223 are provided outside the stapler movement range (outside the front and rear side plates), so that the configuration of the stapler moving portion is simplified and not only can save space. In addition to ease of assembly, maintenance such as replacement can be improved. In this embodiment, the drive sources of the rotation base 221 and the movement base 201 use a stepping motor to set the reduction ratio so that the movement amount per pulse is the same, thereby facilitating the control. The same control is possible even if the movement speed of the rotation base 221 and the movement base 201 is controlled to be the same.
[0081]
In the present embodiment, the stapler has been described for the clincher portion 118A, but the stitcher portion 118 has substantially the same configuration (only the slider rotation detection means 225 and SN6 are not provided), and both have drive means connected. Therefore, the same operation is performed.
[0082]
【The invention's effect】
As described above, according to the present invention, after performing parallel binding or oblique binding, when shifting to the next binding operation, a position closer to the binding position than the home position of the stitcher unit and the clincher unit, Return to a preset position that does not impede the loading of the paper, and always move in one direction from the position to the binding position to perform the binding operation. Therefore, the binding operation is performed using a set of split staplers or an integrated stapler. When performing the above, it is possible to secure the relative positional accuracy of the stapler and to efficiently perform end face binding (front parallel / back parallel / front diagonal / back diagonal / parallel two locations).
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a schematic configuration of an image forming system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating another example (example in which ARDF is omitted) of the schematic configuration of the image forming system according to the embodiment of the present invention.
FIG. 3 is a diagram showing details of a post-processing apparatus in the image forming system of FIG.
4 is a diagram showing details of a transport / stack device in the image forming system of FIG. 1; FIG.
FIG. 5 is a view of the stapler according to the first embodiment and its driving mechanism as seen from a direction parallel to the paper transport direction.
6 is a perspective view of the stapler in FIG. 5. FIG.
7 is a plan view showing details of the clincher portion of FIG. 5. FIG.
FIG. 8 is a side view of a cross section of the main part of the clincher portion of FIG. 5;
9 is a side view of a cross section of the main part of the stitcher portion of FIG.
10 is a bottom view showing details of the stitcher portion of FIG. 5. FIG.
FIG. 11 is a diagram showing a state when the clincher portion of FIG. 7 is rotated in one direction.
12 is a diagram showing a state when the clincher portion of FIG. 7 is rotated in the other direction. FIG.
FIG. 13 is a block diagram mainly showing an electrical configuration of the post-processing apparatus according to the first embodiment.
FIG. 14 is a flowchart showing an overall control procedure of the initial operation of the post-processing apparatus according to the first embodiment.
FIG. 15 is a flowchart showing details of a rotation-based home position detection operation (initial process) in step S101 in FIG.
FIG. 16 is a flowchart showing details of a movement-based home position detection operation (initial process) in step S102 in FIG.
FIG. 17 is a flowchart showing a processing procedure of overall binding operation of the post-processing apparatus according to the present embodiment.
[Explanation of symbols]
1 Image forming device
2 Paper feeder
3 Scanner
4 ARDF
5 Post-processing equipment
6 Transport stack device
108 Staple tray
109 Jogger fence
114 Rear end fence
118 Stapler (Stitcher)
118A Stapler (Clincher)
119 Folding plate
120, 121 Folding roller pair
123 Folding path
150 CPU
151 I / O
160 Staple motor
201,203 Moving base
205,206 Slide axis
208, 215, 207, 216 Spiral shaft
219 Timing pulley
213 Stepping motor (moving base drive motor)
223 Stepping motor (rotary base drive motor)
217 slider
221, 222 Rotating base
224, 232 Rotating shaft
231 Slide guide (axis)

Claims (9)

A stapler provided with a staple needle receiving portion and a push-out portion and a clincher portion that bends the tip of the needle are formed as a single body or as a separate body, and a plurality of sheets existing between the two stapler members are stapled. In the paper processing method for binding with a needle,
The stitcher unit and the clincher unit are moved in parallel in a direction orthogonal to the sheet conveying direction, and the stitcher unit and the clincher unit are rotated as they are or on the same axis to perform parallel binding or diagonal binding, When shifting to the next binding operation, the position returns to a position that is closer to the binding position than the home position of the stitcher unit and the clincher unit, and does not obstruct the paper carry-in, and from that position to the binding position at all times. A sheet processing method, wherein the binding operation is performed by moving in one direction. 2. The sheet processing method according to claim 1, wherein the next binding operation is an operation of binding at the same position with respect to a sheet bundle of the same sheet size. 2. The sheet processing method according to claim 1, wherein when the binding position is two, when the binding operation is finished at one binding position, the next binding operation starts from the one binding position. A stitcher portion provided with a staple needle accommodating portion and a push-out portion and a clincher portion that bends the tip of the needle are configured separately, and a plurality of sheets existing between the two stapler members are formed by a staple needle. In a paper processing apparatus that performs binding,
First and second moving bases for translating the stitcher unit and the clincher unit in synchronization with a direction orthogonal to the sheet conveyance direction, respectively;
First driving means for driving the first and second movable pedestals;
First and second rotating pedestals supported rotatably on the same axis with respect to the first and second moving pedestals, respectively;
Second driving means for rotating the first and second rotating bases synchronously;
Control means for performing parallel binding or oblique binding at a desired position based on a difference in moving amount or moving speed between the moving pedestal and the rotating pedestal by the first driving means and the second driving means;
The control means is a position closer to the binding position than the home position of the stitcher unit and the clincher unit when shifting to the next binding operation after performing parallel binding or diagonal binding, A sheet processing apparatus characterized in that it is moved to a preset position that does not impede the loading of the paper and is always moved in one direction from the position to the binding position to perform the binding operation. A stitcher portion provided with a staple needle accommodating portion and a push-out portion and a clincher portion that bends the tip of the needle are configured separately, and a plurality of sheets existing between the two stapler members are formed by a staple needle. In a paper processing apparatus that performs binding,
First and second moving pedestals for translating the stitcher unit and the clincher unit in a direction perpendicular to the sheet conveying direction;
First driving means for driving these movable pedestals;
First and second rotating pedestals supported rotatably on the same axis with respect to the first and second moving pedestals, respectively;
Second driving means for rotating the first and second rotating bases;
Control means for independently driving and controlling the first driving means and the second driving means, and executing parallel binding and oblique binding at a desired position;
The control means is a position closer to the binding position than the home position of the stitcher unit and the clincher unit when shifting to the next binding operation after performing parallel binding or diagonal binding, A sheet processing apparatus characterized in that it is moved to a preset position that does not impede the loading of the paper and is always moved in one direction from the position to the binding position to perform the binding operation. A stitcher portion provided with a staple needle storage portion and a push-out portion and a clincher portion that bends the tip of the needle are integrally formed with the paper insertion portion interposed therebetween, and there are a plurality of portions existing between the paper insertion portions. In a paper post-processing apparatus that binds the paper with a staple,
A moving pedestal for moving the stitcher unit and the clincher unit in parallel in a direction orthogonal to the paper conveyance direction;
First driving means for driving the movable base;
First and second rotating pedestals supported rotatably on the same axis with respect to the movable pedestal;
Second driving means for rotating the stitcher portion and the clincher portion by rotating the first and second rotating pedestals;
Control means for performing parallel binding or oblique binding based on a difference in moving amount or moving speed between the moving base and the rotating base by the first driving means and the second driving means;
The control means includes a position closer to the binding position than the home position of the stitcher portion and the clincher portion when the control means shifts to the next binding operation after performing parallel binding or oblique binding. In this case, the sheet processing apparatus is configured to move the sheet to a preset position that does not impede the loading of the sheet and always move the sheet in one direction from the position to the binding position to perform the binding operation. The sheet processing apparatus according to claim 4, wherein the next binding operation is an operation of binding the same bundle of sheets of the same sheet size at the same position. 7. When the number of the binding positions is two, when the binding operation is finished at one binding position, the next binding operation starts from the one binding position. The paper processing apparatus as described. A sheet processing apparatus according to any one of claims 4 to 8,
An image forming apparatus for forming a visible image on a recording medium;
Is formed as a single body or as a separate body.

Images