JP2016150836A - Sheet processing device, image formation system, control program of sheet processing device, control method for sheet processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress vibration that occurs when a sheet processing part moves.SOLUTION: There are provided a sheet processing part which applies a sheet process to a sheet by moving, a sheet processing moving part for moving the sheet processing part, a use state acquiring part which acquires a use state of at least one of the sheet processing part and the sheet processing moving part, a drive mode deciding part which decides a drive mode of the sheet processing moving part according to the acquired use state, and a drive control part 711 which drives the sheet processing moving part according to the decided drive mode.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a sheet processing apparatus, an image forming system, a control program for the sheet processing apparatus, and a control method for the sheet processing apparatus.

  In recent years, a sheet processing apparatus including a sheet processing mechanism (hereinafter referred to as a “binding processing unit”) that binds stacked sheet bundles with a binding needle is known. In such a sheet processing apparatus, when binding a sheet bundle, the binding processing unit is moved to a target position, and the sheet bundle is bound at that position. However, such a sheet processing apparatus generates a natural vibration when the binding processing unit is moved.

  Therefore, such a sheet processing apparatus has a problem that noise is generated due to movement of the binding processing unit. Further, in such a sheet processing apparatus, if sheet processing is performed while vibration is generated due to movement of the binding processing unit, sheet processing accuracy is deteriorated. Therefore, the start of processing on the next sheet is waited until the vibration is reduced. There is a problem that productivity is reduced. In addition, in such a sheet processing apparatus, various problems may occur due to natural vibration that occurs when the binding processing unit is moved.

  Therefore, among such sheet processing apparatuses, a sheet processing apparatus that performs vibration suppression control that suppresses natural vibration by controlling the acceleration of the binding processing unit has been proposed (for example, see Patent Document 1). ).

  By the way, in such a sheet processing apparatus, the natural vibration is caused by the fact that the binding needle is consumed and the weight of the binding processing unit changes or the binding processing unit moves each time the binding processing unit is used. The mechanism changes depending on the usage status of the binding processing unit, such as deterioration.

  However, since the conventional sheet processing apparatus cannot perform vibration suppression control corresponding to such changes, there is a problem that the effect of vibration suppression control is reduced each time the binding processing unit is used. .

  Such a problem can also occur when the binding processing unit is moved in a sheet processing apparatus including a binding processing unit that binds a sheet bundle with an adhesive. In addition, such a problem is a problem that can occur in a sheet processing apparatus that includes a punching unit that punches a sheet, when the punching unit is moved.

  In addition, such a problem occurs in a sheet processing apparatus that moves the sheet stacking unit in order to match the height of the sheet bundle with the height of the sheet conveyance path or adjust the stacking position of the sheet bundle. The same problem may occur when moving the part.

  Such a problem also occurs when the sheet discharge unit is moved in a sheet processing apparatus that moves the sheet discharge unit while contacting the sheet bundle in order to discharge the sheets stacked on the sheet stacking unit. It is a possible problem as well.

  In addition, such a problem occurs when a sheet aligning unit is moved in a sheet processing apparatus that moves a pair of sheet aligning portions to face each other so as to align the sheet bundle from the sheet width direction. It is a problem that can occur as well.

  SUMMARY An advantage of some aspects of the invention is that it suppresses vibrations that occur when a sheet processing unit moves.

  In order to solve the above problems, an aspect of the present invention provides a sheet processing unit that performs sheet processing on a sheet by moving, a sheet processing moving unit that moves the sheet processing unit, the sheet processing unit, A usage status acquisition unit that acquires a usage status of at least one of the sheet processing movement units, a driving mode determination unit that determines a driving mode of the sheet processing movement unit according to the acquired usage status, and And a drive control unit that drives the sheet processing moving unit in accordance with the driving mode.

  According to the present invention, it is possible to suppress vibration that occurs when the sheet processing unit moves.

1 is a diagram illustrating an example of an operation mode of an image forming system according to an embodiment of the present invention. It is sectional drawing which shows the post-processing apparatus which concerns on embodiment of this invention from the main scanning direction. It is a front view which shows the end surface binding processing tray which concerns on embodiment of this invention from a sheet | seat stacking surface. It is a perspective view which shows the end surface binding processing tray which concerns on embodiment of this invention from a sheet | seat stacking surface. It is a perspective view which shows the end surface binding processing tray which concerns on embodiment of this invention from a sheet | seat stacking surface. It is sectional drawing which shows the end surface binding processing tray which concerns on embodiment of this invention from the main scanning direction. It is a side view which shows the stapler which concerns on embodiment of this invention from a subscanning direction. FIG. 3 is a perspective view of a shift tray moving mechanism according to an embodiment of the present invention. It is a perspective view of the raising / lowering mechanism of the shift tray which concerns on embodiment of this invention. It is a block diagram which shows typically the hardware constitutions of the post-processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows typically the functional structure of the post-processing apparatus which concerns on embodiment of this invention. It is a figure which shows the drive profile of a stapler moving motor when the conventional post-processing apparatus moves an end surface binding stapler, and the speed fluctuation of an end surface binding stapler. It is a figure for demonstrating the procedure in which the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a flowchart for demonstrating the procedure in which the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a figure for demonstrating the procedure in which the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a flowchart for demonstrating the procedure in which the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a figure for demonstrating the procedure in which the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a figure which shows the position deviation at the time of driving a stapler moving motor with the drive profile which the post-processing apparatus which concerns on embodiment of this invention produced. It is a figure which shows the positional deviation of the end surface binding stapler in the post-processing apparatus which concerns on embodiment of this invention. It is a figure which shows the positional deviation of the end surface binding stapler in the post-processing apparatus which concerns on embodiment of this invention. It is a graph which shows the change of the natural vibration frequency (omega) _n of the end surface binding stapler by the use condition of the end surface binding stapler in the post-processing apparatus which concerns on embodiment of this invention. It is a graph showing a change in damping coefficient zeta _n of the natural vibration of the end face binding stapler according usage of the end face binding stapler in the post-processing apparatus according to an embodiment of the present invention. It is a table which shows the combination of ₍ omega) _n and (zeta) _n used when the post-processing apparatus which concerns on embodiment of this invention produces the drive profile of a stapler moving motor. It is a flowchart for demonstrating the method for the post-processing apparatus which concerns on embodiment of this invention to produce the drive profile of a stapler moving motor according to a use condition. It is a flowchart for demonstrating the method for the post-processing apparatus which concerns on embodiment of this invention to produce the drive profile of a stapler moving motor according to a use condition. It is a flowchart for demonstrating the process at the time of the post-processing apparatus which concerns on embodiment of this invention performing a binding process operation with an end surface binding stapler.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, an operation mode of the image forming system according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating an example of an operation mode of the image forming system according to the present embodiment.

  As shown in FIG. 1, the image forming system according to the present embodiment includes an image forming apparatus PR, a document reading apparatus PA, a post-processing apparatus PD, and a sheet supply apparatus PB. Note that the image forming apparatus PR, the document reading apparatus PA, the post-processing apparatus PD, and the sheet supply apparatus PB are connected via a communication port, and perform communication via the communication port.

  The image forming apparatus PR is an MFP (Multi Function Peripheral) that can be used as a printer, a facsimile, a scanner, and a copier by providing an imaging function, an image forming function, a communication function, and the like. Specific modes of the image forming mechanism in the image forming apparatus PR according to the present embodiment include an electrophotographic method and an ink jet method.

  The post-processing device PD is a post-processing mechanism that performs post-processing such as binding processing, folding processing, and bookbinding processing on a sheet on which an image has been formed by the image forming apparatus PR. The sheet bundle P1 discharged from the post-processing device PD is sequentially stacked on the shift tray 202. That is, in the present embodiment, the post-processing device PD functions as a sheet processing device. The post-processing device PD receives various parameters necessary for control, such as operation information, paper information, and paper conveyance information, from the image forming device PR via the communication port.

  The document reader PA includes an automatic document feeder that automatically conveys a document to be read, and reads a document that is automatically conveyed from the automatic document feeder. The sheet supply device PB supplies the sheet to the image forming apparatus PR. The sheet supply device PB includes a case in which the image forming apparatus PR and the housing are used together, and a sheet feeding device PB that is separate from the image forming apparatus PR.

  Next, the configuration of the post-processing device PD according to the present embodiment will be described with reference to FIG. FIG. 2 is a cross-sectional view showing the post-processing apparatus PD according to the present embodiment from the main scanning direction.

  The post-processing device PD according to the present embodiment is attached to a side portion of the image forming device PR. Then, the sheet discharged from the image forming apparatus PR is guided to the post-processing apparatus PD.

  The post-processing device PD includes a transport path A, a transport path B, a transport path C, a transport path D, and a transport path H. The post-processing apparatus PD first transports the sheet discharged from the image forming apparatus PR to a transport path A having a post-processing unit that performs post-processing on the sheet. This post-processing means is a punch unit 100 as a punching means in this embodiment.

  The conveyance path B is a conveyance path that leads to the upper tray 201 through the conveyance path A, and the conveyance path C is a conveyance path C that leads to the shift tray 202. The conveyance path D is a conveyance path D that leads to a processing tray F that performs alignment, stapling, and the like (hereinafter also referred to as “end face binding processing tray F”). The conveyance path A is distributed to the conveyance paths B, C, and D by the branch claw 15 and the branch claw 16, respectively.

  The post-processing device PD according to this embodiment includes a punch unit 100, a jogger fence 53, an end-face stitching stapler S1, a saddle stitching upper jogger fence 250a, a saddle stitching lower jogger fence 250b, a saddle stitching stapler S2, a shift tray 202, and a folding plate 74. A folding roller 81 is provided.

  The punch unit 100 punches a sheet. The jogger fence 53 and the end face binding stapler S1 perform sheet alignment and edge binding. The saddle stitching lower jogger fence 250b and the saddle stitching stapler S2 perform sheet alignment and saddle stitching. The shift tray 202 sorts sheets. The folding plate 74 and the folding roller 81 perform the middle folding.

  Therefore, post-processing apparatus PD selects according to the process which performs the conveyance path A, the conveyance path B, the conveyance path C, and the conveyance path D following this. The conveyance path D includes a sheet storage portion E. On the downstream side of the conveyance path D, an end face binding processing tray F, a saddle stitching middle folding processing tray G, and a paper discharge conveyance path H are provided.

  In the conveyance path A common to the upstream of the conveyance path B, the conveyance path C, and the conveyance path D, an inlet sensor 301 that detects a sheet received from the image forming apparatus PR, an inlet roller 1, a punch unit 100, The punch and waste hopper 101, the conveying roller 2, the first and second branching claws 15, and the branching claws 16 are sequentially arranged.

  The first and second branch claws 15 and 16 are held in an initial state as shown in FIG. 2 by springs, and are driven by turning on the first and second solenoids, respectively. The first and second branching claws 15 and 16 change the combination of the branching directions according to ON / OFF of the first and second solenoids, so that the sheet is transferred to the conveyance path B, the conveyance path C, and the conveyance path D. Sort out.

  When the post-processing device PD guides the sheet to the conveyance path B, the post-processing device PD keeps the state shown in FIG. 2, that is, the first solenoid is in the OFF state (the first branch claw 15 is in the initial state). As a result, the sheet is discharged from the transport roller 3 to the upper tray 201 via the paper discharge roller 4.

  When the post-processing device PD guides the sheet to the conveyance path C, the first and second solenoids are turned on from the state shown in FIG. 2 (the second branching claw 16 is in the initial state), The branch claw 15 is turned upward and the branch claw 16 is turned downward. Thus, the sheet is conveyed to the shift tray 202 side via the conveying roller 5 and the discharge roller pair 6 (6a, 6b). In this case, the sheets are sorted.

  Sheets are sorted in the shift tray paper discharge unit located at the most downstream portion of the post-processing device PD. Sheet sorting is performed by the discharge roller pairs 6a and 6b, the return roller 13, the paper surface detection sensor 330, the shift tray 202, the shift mechanism, and the shift tray lifting mechanism. The shift mechanism reciprocates the shift tray 202 in a direction orthogonal to the sheet conveyance direction. The shift tray lifting mechanism moves the shift tray 202 up and down.

  When the post-processing apparatus PD guides the sheet to the conveyance path D, the first solenoid that drives the first branch claw 15 is turned ON, and the second solenoid that drives the second branch claw is turned OFF. The branch claw 15 is turned upward and the branch claw 16 is turned downward. As a result, the sheet is guided from the conveying roller 2 to the conveying path D through the conveying roller 7.

  The sheet guided to the conveyance path D is guided to the end face binding processing tray F. The sheet subjected to alignment and stapling in the end face binding processing tray F is guided by the guide member 44 to the shift path 202, and is fed to the shift tray 202. To the binding processing tray G ”).

  When guided to the shift tray 202, the sheet guided to the conveyance path D is discharged from the discharge roller pair 6 to the shift tray 202. In addition, when the sheet guided to the conveyance path D is guided to the saddle stitching processing tray G side, the sheet is folded and bound by the saddle stitching processing tray G, passes through the discharge conveyance path H, and is discharged from the discharge roller 83 to the lower tray. The sheet is discharged to 203.

  On the other hand, a branch claw 17 is disposed in the conveyance path D and is held in a state as shown in FIG. 2 by a low load spring. After the trailing edge of the sheet conveyed by the conveyance roller 7 passes through the branching claw 17, the post-processing device PD reverses at least one of the conveyance rollers 9, 10 and the staple discharge roller 11 to reverse the sheet. It can be reversed along the turn guide 8.

  As a result, the post-processing apparatus PD can guide the sheet from the trailing end of the sheet to the sheet storage portion E to stay (prestack), and can convey the sheet while overlapping the next sheet. The post-processing device PD can also convey two or more sheets in a superimposed manner by repeating this operation. Note that the prestack sensor 304 is a sensor for setting the reverse feed timing when the sheets are prestacked.

  When the post-processing device PD guides the sheet to the conveyance path D and performs sheet alignment and edge binding, the post-processing device PD guides the sheet to the end-face binding processing tray F by the staple discharge roller 11 and sequentially stacks the sheets on the end-face binding processing tray F. To do.

  In this case, the post-processing device PD performs the alignment in the longitudinal direction (sheet conveying direction) and the sheet thickness direction with the tapping roller 12 for each sheet, and the lateral direction (hereinafter, “direction orthogonal to the sheet conveying direction”) by the jogger fence 53 Alternatively, it is also referred to as “sheet width direction”).

  The post-processing device PD drives the end-face binding stapler S1 as the binding means by a staple signal from the control device in the interval between jobs, that is, from the last sheet of the sheet bundle to the first sheet of the next sheet bundle. I do. The sheet bundle subjected to the binding process is immediately sent to the discharge roller pair 6 by the discharge belt 52 provided with the discharge claw 52a and is discharged to the shift tray 202 set at the receiving position.

  As shown in FIG. 2, the end-face stitching stapler S1 includes a stitcher S1a that strikes the binding needle and a clincher S1b that bends the tip of the binding needle. Between the stitcher (driver) S1a and the clincher S1b is a space S1c through which the rear end reference fence 51 can pass. Therefore, the end surface binding stapler S1 can move without interference between the end surface binding stapler S1 and the rear end reference fence 51.

  Further, unlike the saddle stitching stapler S2, the end-face stitching stapler S1 includes a stitcher S1a and a clincher S1b that are integrated. The stitcher S1a is a fixed side that does not move in a direction perpendicular to the sheet surface, and the clincher S1b is a moving side that moves in a direction perpendicular to the sheet surface.

  When the end surface binding stapler S1 configured as described above performs the binding operation on the sheet bundle, the clincher S1b moves to the stitcher S1a side in a predetermined binding portion of the sheet bundle stacked on the rear end reference fence 51. By binding the sheet bundle. That is, in the present embodiment, the end face binding stapler S1 functions as a sheet processing unit.

  As will be described later with reference to FIGS. 3 and 4, the discharge belt 52 is positioned at the alignment center in the sheet width direction, is stretched between the pulleys 62, and is driven by the discharge belt drive motor 157. Further, as will be described later with reference to FIGS. 3 and 4, a plurality of discharge rollers 56 are arranged symmetrically with respect to the discharge belt 52 on the sheet discharge side of the end-face binding processing tray F, and are arranged with respect to the drive shaft. It is rotatably provided and functions as a driven roller.

  The release claw 52 a is configured such that the home position is detected by the release belt HP sensor 311. The discharge belt HP sensor 311 is turned on / off by a discharge claw 52 a provided on the discharge belt 52. On the outer periphery of the discharge belt 52, two discharge claws 52a are arranged at opposing positions.

  The two discharge claws 52a alternately move and convey the sheet bundle stored in the end face binding processing tray F. Further, the post-processing device PD can align the front end in the transport direction of the sheet bundle accommodated in the end-face binding processing tray F on the back surface of the discharge claw 52a by rotating the discharge belt 52 reversely as necessary. .

  The rear end holding lever 110 is positioned at the lower end of the rear end reference fence 51 so that the rear end of the sheet bundle accommodated in the rear end reference fence 51 can be pressed from the sheet surface. Reciprocates in a direction substantially perpendicular to the direction. Sheets discharged to the end-face binding processing tray F are struck for each sheet and aligned in the vertical direction (sheet conveyance direction) with a roller 12.

  By the way, if the trailing edge of the sheets stacked on the end surface binding processing tray F is curled or the stiffness of the sheet is weak, the trailing edge tends to buckle and swell due to the weight of the sheet itself. Further, as the number of sheets stacked increases, the gap for the next sheet in the rear end reference fence 51 is reduced, and the vertical alignment tends to be deteriorated. Therefore, the trailing edge pressing mechanism 110 reduces the swelling of the trailing edge of the sheet so that the sheet can easily enter the trailing edge reference fence 51, and the trailing edge pressing lever 110 directly presses the sheet.

  Each of the sheet detection sensors 302, 303, 304, 305, and 310 is a sensor that detects whether or not a sheet has passed at a provided position or whether or not a sheet is stacked.

  Next, the configuration of the end face binding processing tray F according to the present embodiment will be described with reference to FIGS. FIG. 3 is a front view showing the end surface binding processing tray F according to the present embodiment from the sheet stacking surface. 4 and 5 are perspective views showing the end face binding processing tray F according to the present embodiment from the sheet stacking surface. FIG. 6 is a cross-sectional view showing the end face binding processing tray F according to the present embodiment from the main scanning direction.

  The alignment in the width direction of the sheet received from the image forming apparatus PR on the upstream side is performed by the jogger fences 53a and 53b, and the alignment in the sheet conveying direction is abutted against the first and second rear end reference fences 51a and 51b. To be implemented.

  The first and second rear end reference fences 51a and 51b are respectively provided with stack surfaces 51a1, 51a2, 51b1, and 51b2 that hold the sheet bundle in contact with the rear end of the sheet so as to support the rear end of the sheet. It has become. This support is possible at four points, as can be seen from FIG.

  In this manner, the sheet bundle is stacked in contact with any two of the stack surfaces 51a1, 51a2, 51b1, 51b2 of the rear end reference fence 51. This is because the mechanical error including the mounting accuracy of the rear end reference fences 51a and 51b is taken into consideration, and it is possible to support the sheet bundle in a stable state by supporting the sheet bundle at two points. is there.

  Then, in the case of one-point oblique binding, the end surface binding stapler S1 moves to the end portion of the stacked sheet bundle and performs the binding process in a state of being inclined obliquely with respect to the sheet bundle.

  After completion of the alignment operation, the post-processing device PD performs binding processing with the end-face binding stapler S1, and drives the discharge belt 52 counterclockwise by the discharge belt drive motor 157 as can be seen from FIG.

  Then, the post-processing device PD discharges the sheet bundle after the binding processing from the end-face binding processing tray F by scooping it with the discharge claw 52a attached to the discharge belt 52. The side plate 64a and the side plate 64b are side plates for indicating the end face binding processing tray F, respectively.

  Note that the post-processing device PD can perform the same operation as described above even in an unbound bundle in which the binding process is not performed after the alignment process.

  As shown in FIGS. 5 and 6, the sheets guided to the end surface binding processing tray F by the staple paper discharge roller 11 are sequentially stacked on the end surface binding processing tray F. At this time, when the number of sheets discharged to the end face binding processing tray F is one sheet, the sheet is aligned in the vertical direction (sheet conveying direction) with the tapping roller 12 for each sheet, and the jogger fences 53a and 53b perform the width direction ( Alignment in the sheet width direction perpendicular to the sheet conveyance direction is performed.

  The hitting roller 12 is given a pendulum motion by the hitting SOL 170 about the fulcrum 12a, and intermittently acts on the sheet fed to the end surface binding processing tray F, and abuts the rear end of the sheet against the rear end reference fence 51. The hitting roller 12 itself rotates counterclockwise.

  As shown in FIGS. 3 and 5, the jogger fence 53 is provided in a pair (53a, 53b) in the sheet width direction and is driven via a timing belt by a jogger motor 158 capable of forward and reverse rotation, and reciprocates in the sheet width direction. Moving.

  Next, the moving mechanism of the end surface binding stapler S1 according to the present embodiment will be described with reference to FIG. FIG. 7 is a side view showing the stapler S1 according to this embodiment from the sub-scanning direction.

  As shown in FIG. 7, the end surface binding stapler S1 is driven via a timing belt 159a by a stapler moving motor 159 capable of forward and reverse rotation, and moves in the sheet width direction in order to bind a predetermined position of the sheet rear end. That is, in the present embodiment, the stapler moving motor 159 functions as a sheet processing moving unit. A stapler movement HP sensor 312 that detects the home position of the end-face stitching stapler S1 is provided at one end of the movement range.

  The binding position in the sheet width direction is controlled by the amount of movement of the end surface binding stapler S1 from the home position. The end-face binding stapler S1 is configured to be able to bind at one or a plurality of positions (generally two places) at the rear end portion of the sheet, and moves at least over the entire width of the rear end of the sheet supported by the rear end reference fences 51a and 51b. It is configured as possible.

  Further, it is possible to move to the end side of the apparatus as much as possible for exchanging the binding needle, so that the user can easily perform the binding needle exchanging operation.

  Next, a mechanism for moving the shift tray 202 in the main scanning direction according to the present embodiment will be described with reference to FIGS. 8A and 8B are perspective views of a moving mechanism of the shift tray 202 according to this embodiment.

  As shown in FIGS. 8A and 8B, in the movement mechanism of the shift tray 202 in the main scanning direction according to the present embodiment, the shift tray 202 can be moved in the main scanning direction. It is supported from the direction of gravity by the support plate 204. In addition, the end fence 32 is fixed to the shift tray 202.

  As shown in FIGS. 8A and 8B, in order to move the shift tray 202 in the main scanning direction, the post-processing device PD first drives a tray shift motor 169 that can rotate forward and backward. The power cam 31 is rotated in the direction of the arrow shown in FIGS. As a result, the driving force of the tray shift motor 169 is transmitted to the end fence 32 via the power cam 31.

  When the driving force of the tray shift motor 169 is transmitted, the end fence 32 moves in the arrow direction shown in FIGS. 8A and 8B, that is, in the main scanning direction. The shift tray 202 moves in the main scanning direction by moving along the tray support plate 204 as the end fence 32 moves.

  The power cam 31 is provided with two notches, and the post-processing device PD detects the position of the notches with the sensor 336, thereby determining the position of the shift tray 202 in the main scanning direction. It can be detected.

  Next, the lifting mechanism of the shift tray 202 according to the present embodiment will be described with reference to FIG. FIG. 9 is a perspective view of the lifting mechanism of the shift tray 202 according to this embodiment.

  As shown in FIG. 9, in the lifting mechanism of the shift tray 202 according to this embodiment, a timing belt 103 is tensioned between a drive shaft 106 and a driven shaft 102 via a timing pulley. A tray support plate 204 is fixed to the timing belt 103, and the shift tray 202 is suspended by the timing belt 103 so as to be lifted and lowered.

  As shown in FIG. 9, in order to raise and lower the shift tray 202, the post-processing device PD first drives the tray lifting / lowering motor 105 that can rotate forward and backward to move the rotating gear 109 via the worm gear 107. The drive shaft 106 is rotated in the same direction by rotating in the arrow direction shown in FIG. As a result, the driving force is transmitted to the timing belt 103 to the tray lifting / lowering motor 105.

  When the driving force of the tray lifting / lowering motor 105 is transmitted, the timing belt 103 moves in the direction of the arrow shown in FIG. 9, that is, in the vertical direction, and the shift tray 202 moves along with the movement of the timing belt 103. The tray support plate 204 moves up and down as it moves.

  Thus, since the post-processing device PD moves the shift tray 202 up and down by the tray lifting / lowering motor 105 via the worm gear 107, the shift tray 202 can be held at a fixed position, and the shift tray 202 is prevented from falling. It is possible to do.

  The tray support plate 204 is integrally formed with a shielding plate 108, and sensors 110, 111, 112, 113 for detecting the position of the tray support plate 204 are arranged along the timing belt. Yes. The post-processing device PD can detect the position of the shift tray in the ascending / descending direction by detecting the shielding plate 108 with the sensors 110, 111, 112, and 113.

  Next, the hardware configuration of the post-processing device PD according to the present embodiment will be described with reference to FIG. FIG. 10 is a block diagram schematically showing a hardware configuration of the post-processing device PD according to the present embodiment. In FIG. 10, the hardware configuration of the post-processing apparatus PD will be described as an example, but the same applies to the image forming apparatus PR.

  As illustrated in FIG. 10, a post-processing device PD according to the present embodiment includes a CPU (Central Processing Unit) 701, a RAM (Random Access Memory) 702, a ROM (Read Only Memory) 703, an HDD (Hard Disk Drive) 1704, and the like. A dedicated device 705, an operation unit 706, a display unit 707, and a communication I / F 708 are connected via a bus 709.

  The CPU 701 is a calculation unit and controls the operation of the entire post-processing device PD. The RAM 702 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 701 processes information. The ROM 703 is a read-only nonvolatile storage medium and stores a program such as firmware.

  The HDD 704 is a non-volatile storage medium that can read and write information, and stores various data such as image data, various programs such as an OS (Operating System), various control programs, and application programs.

  The dedicated device 705 is hardware for realizing a dedicated function in the post-processing device PD, that is, hardware for realizing a dedicated function in folding processing, bookbinding processing, binding processing, and the like. In the image forming apparatus PR, the document reading apparatus PA, and the sheet feeding apparatus PB, the dedicated device 705 is dedicated to hardware for realizing a dedicated function in each apparatus, that is, a printer, a facsimile, a scanner, and a copying machine. This is hardware for realizing the function.

  The operation unit 706 is a user interface for inputting information to the post-processing device PD, and is realized by an input device such as a keyboard, a mouse, or a touch panel.

  The display unit 707 is a visual user interface for the user to check the state of the post-processing device PD, and is realized by a display device such as an LCD (Liquid Crystal Display).

  The I / F 708 is an interface for the post-processing device PD to communicate with other devices, and interfaces such as Ethernet (registered trademark), USB (Universal Serial Bus) interface, and PCIe (Peripheral Component Interconnect Express) interface are used. .

  In such a hardware configuration, a program stored in a storage medium such as the ROM 703, the HDD 704, or an optical disk is read into the RAM 702, and the CPU 701 performs an operation according to the program loaded in the RAM 702, thereby configuring the software control unit. Is done. A functional block that realizes the function of the post-processing device PD according to the present embodiment is configured by a combination of the software control unit configured as described above and hardware.

  Next, the functional configuration of the post-processing device PD according to the present embodiment will be described with reference to FIG. FIG. 11 is a block diagram schematically illustrating a functional configuration of the post-processing device PD according to the present embodiment.

  As shown in FIG. 11, the post-processing device PD according to the present embodiment includes a stapler moving motor 159, an encoder 160, a needle remaining amount detection sensor 161, a stitcher driving motor 162, a display panel 163, a communication I / F 164, and a controller 710. Prepare. The controller 710 includes a drive control unit 711, an operation display control unit 712, a communication control unit 713, a storage unit 714, a usage time measurement unit 715, and a detection signal conversion unit 716.

  The stapler moving motor 159 moves the end surface binding stapler S <b> 1 under the control of the drive control unit 711. The encoder 160 detects the amount of displacement of the stapler moving motor 159 and inputs the detection signal to the detection signal conversion unit 716.

  The needle remaining amount detection sensor 161 detects the remaining amount of the binding needle (hereinafter referred to as “needle remaining amount”) in the end surface binding stapler S <b> 1 and inputs the detection signal to the detection signal conversion unit 716. The stitcher drive motor 162 drives the stitcher S1a of the end-face stitching stapler S1 under the control of the drive control unit 711.

  The display panel 163 is an output interface that visually displays the state of the post-processing device PD, and an input when the user directly operates the post-processing device PD or inputs information to the post-processing device PD as a touch panel. It is also an interface. That is, the display panel 163 includes a function of displaying an image for receiving an operation by the user. The display panel 163 is realized by the operation unit 706 and the display unit 707 illustrated in FIG.

  Then, by operating the display panel 163, the user can input the usage status of the end surface binding stapler S1, such as the movement distance, usage time, the number of movements, the number of bindings, and the remaining amount of staples of the end surface binding stapler S1. It is like that. Accordingly, the user can change or reset the usage status of the end-face stitching stapler S1 when the staple is replenished or when the end-face stitching stapler S1 or the stapler moving motor 159 is replaced.

  The communication I / F 164 is an interface for the post-processing apparatus PD to communicate with the image forming apparatus PR, and an interface such as a USB or PCIe interface is used. The communication I / F 164 is realized by the I / F 708 shown in FIG. The post-processing apparatus PD according to the present embodiment sends various parameters necessary for control such as operation information, sheet bundle stacking status, sheet information, and sheet conveyance timing from the image forming apparatus PR via the communication I / 164. It will come.

  The controller 710 is configured by a combination of software and hardware. Specifically, a software control unit and an integrated circuit configured by loading a control program such as firmware stored in a non-volatile storage medium such as the ROM 703 or the HDD 704 into the RAM 702 and the CPU 701 performs an operation according to the program. The controller 710 is configured by hardware such as the above.

  The drive control unit 711 plays a role of controlling each unit included in the controller 710 and gives a command to each unit of the controller 710.

  The drive control unit 711 estimates the remaining amount of the needle based on the detection signal input from the remaining amount detection sensor of the needle, or estimates the number of bindings by the end surface binding stapler S1.

  The operation display control unit 712 displays information on the display panel 163 or notifies the drive control unit 711 of information input via the display panel 163. Then, the drive control unit 711 stores the information notified from the operation display control unit 712 in the storage unit 714 or gives a command to each unit of the controller 710 according to the information notified from the operation display control unit 712.

  The communication control unit 713 inputs a signal or command input via the communication I / F 164 to the drive control unit 711. Then, the drive control unit 711 stores the signal or command input from the communication control unit 713 in the storage unit 714 or gives a command to each unit of the controller 710 according to the signal or command input from the communication control unit 713. .

  The storage unit 714 stores parameters input by a user operation on the display panel 163, various parameters sent from the image forming apparatus PR, and usage status of the end face binding stapler S1. The usage time measuring unit 715 measures the usage time of the end-face stitching stapler S1.

  The detection signal conversion unit 716 converts the detection signal input from the encoder 160 into drive information such as a movement amount, a movement speed, and a movement acceleration, and inputs the drive information to the drive control unit 711. Accordingly, the drive control unit 711 can acquire the current driving state of the stapler movement motor 159, the total number of movements of the stapler movement motor 159 so far, and the total movement distance. Then, the drive control unit 711 stores the acquired number of movements and movement distance in the storage unit 714.

  The detection signal conversion unit 716 converts the detection signal input from the needle remaining amount detection sensor 161 into a needle remaining amount and inputs the converted signal to the drive control unit 711. Thereby, the drive control part 711 can acquire the present needle remaining amount of the end surface binding stapler S1. That is, in the present embodiment, the drive control unit 711 functions as a usage status acquisition unit.

  The drive controller 711 counts the number of times the stitcher drive motor 162 has been driven in addition to detecting the needle remaining amount based on the detection signal input from the needle remaining amount detection sensor 161, that is, the end face binding stapler S1. The number of times of binding may be counted, and the remaining needle amount may be estimated based on the count value. Then, the drive control unit 711 causes the storage unit 714 to store the remaining needle amount estimated in this way.

  Next, FIGS. 12A and 12B show the drive profile of the stapler moving motor 159 and the speed fluctuation of the end surface binding stapler S1 when the conventional post-processing apparatus moves the end surface binding stapler S1 in the main scanning direction. The description will be given with reference.

  FIG. 12A is a diagram illustrating a drive profile of the stapler moving motor 159 when the conventional post-processing apparatus moves the end-face stitching stapler S1 in the main scanning direction. FIG. 12B is a diagram showing the speed fluctuation of the shift tray 202 when the conventional post-processing apparatus moves the end-face stitching stapler S1 in the main scanning direction.

  The conventional post-processing device controls the stapler moving motor 159 to be driven according to the drive profile as shown in FIG. 12A when the end-face binding stapler S1 is moved in the main scanning direction. Hereinafter, the drive profile as shown in FIG. 12A is referred to as “normal drive profile (non-vibration suppression)”.

  However, at this time, as shown in FIG. 12 (b), the end-face stitching stapler S1 undergoes speed fluctuation at the end of the rising and stopping of the stapler moving motor 159, that is, at the end of acceleration, causing periodic natural vibration. Occur. This is because if the mass of the end-face stitching stapler S1 is M, a force of F = Ma acts on the end-face stitching stapler S1 in the moving direction during acceleration.

  Due to this force, the end-face stitching stapler S1 generates periodic natural vibrations when the stapler moving motor 159 ends and stops, that is, when acceleration ends. Due to the generation of this periodic natural vibration, noise is generated in the conventional post-processing apparatus when the end-face stitching stapler S1 moves in the main scanning direction.

  Further, if the conventional post-processing apparatus performs sheet processing while vibration is generated due to the movement of the end-face stitching stapler S1, sheet processing accuracy is deteriorated. Therefore, the start of processing on the next sheet is waited until the vibration is reduced. It is necessary and productivity is lowered. In addition, due to the occurrence of the periodic natural vibration, various problems may occur in the conventional post-processing apparatus due to the vibration generated when the end-face stitching stapler S1 is moved.

  Therefore, the post-processing device PD according to the present embodiment creates a drive profile for suppressing the natural vibration of the end-face stitching stapler S1 when moving the end-face stitching stapler S1, and the stapler according to the created drive profile. The moving motor 159 is controlled to be driven.

  Here, a procedure for creating a drive profile of the stapler moving motor 159 for suppressing the natural vibration of the end-face stitching stapler S1 when the post-processing device PD according to the present embodiment moves the end-face stitching stapler S1 will be described with reference to FIG. A description will be given with reference to FIGS. In the present embodiment, it is assumed that the drive control unit 711 creates a drive profile. That is, in the present embodiment, the drive control unit 711 functions as a drive mode determination unit.

  FIG. 13A to FIG. 13D are diagrams for explaining a procedure in which the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159. FIG. 14 is a flowchart for explaining a procedure in which the post-processing device according to the present embodiment creates a drive profile of the stapler moving motor 159.

  As shown in FIGS. 13A to 13D and FIG. 14, the post-processing device PD according to the present embodiment is arranged in two stages on the end surface binding stapler S <b> 1 in order to suppress the natural vibration of the shift tray 202. By giving the input in two stages, a drive profile is created so that the natural vibration generated at the first stage input cancels with the natural vibration generated at the second stage input. Then, the post-processing device PD according to the present embodiment drives the stapler moving motor 159 according to the drive profile created in this way.

  That is, as illustrated in FIG. 13A, the post-processing device PD according to the present embodiment described above when the input is performed so that the target value of the moving speed is A and the stapler moving motor 159 is driven. Thus, natural vibration occurs in the end-face stitching stapler S1.

Under such a premise, the post-processing device PD according to the present embodiment first suppresses the natural vibration of the end-face stitching stapler S1, as shown in FIG. An input (hereinafter referred to as “first input” or “first acceleration”) is set so as to be the value A (S1401). As described above, even when the stapler moving motor 159 is driven by the first input, the natural vibration is generated in the end-face stitching stapler S1. At this time, the moving speed is assumed to converge to A _1.

Further, as shown in FIG. 13C, the post-processing device PD according to the present embodiment inputs (hereinafter referred to as “second input” or “second input”) so that the moving speed converges to A−A ₁ = A ₂ . 2) "is set (S1402). As described above, when the stapler moving motor 159 is driven by the second input, the natural vibration is generated in the shift tray 202 in the same manner.

  At this time, the frequency of the natural vibration generated by the first input and the frequency of the natural vibration generated by the second input are the same. A half cycle of the natural vibration frequency at this time is represented by ΔT.

  Then, as shown in FIG. 13D, the post-processing device PD according to the present embodiment shifts the time by ΔT from the acceleration start time by the first input, and combines the second input with the first input. Set. In other words, the post-processing device PD according to the present embodiment sets the input so that the natural vibration that is the opposite phase of the natural vibration generated by the first input is generated by the second input (S1403).

  As another method, when the post-processing device PD according to the present embodiment moves the end-face stitching stapler S1, a drive profile of the stapler moving motor 159 for suppressing the natural vibration of the end-face stitching stapler S1 is created. The procedure will be described with reference to FIGS. 15 (a) to 15 (d) and FIG.

  FIG. 15A to FIG. 15D are diagrams for explaining a procedure in which the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159. FIG. 16 is a flowchart for explaining a procedure by which the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159.

  As shown in FIGS. 15A to 15D and FIG. 16, the post-processing device PD according to the present embodiment applies acceleration to the end surface binding stapler S1 in order to suppress the natural vibration of the end surface binding stapler S1. By giving in two stages, a drive profile is created so that the natural vibration generated during the first stage acceleration cancels out with the natural vibration generated during the second stage acceleration. Then, the post-processing device PD according to the present embodiment drives the stapler moving motor 159 according to the drive profile created in this way.

  That is, as shown in FIG. 15A, the post-processing device PD according to the present embodiment first creates the driving profile of the stapler moving motor 159 at the first stage when the end face binding stapler S1 starts to accelerate. An acceleration is set as a first input (first acceleration) so as to be given to the end-face stitching stapler S1 for a time T (S1601). The magnitude of acceleration at this time is 1. FIG. 17A shows the speed fluctuation of the end-face stitching stapler S1 at this stage.

  Then, as shown in FIG. 15B, the post-processing device PD according to the present embodiment is equivalent to a half cycle (ΔT) of the frequency of the natural vibration generated by the first input from the acceleration start time by the first input. The time is shifted so that the second stage acceleration is set as the second input (second acceleration) so as to be given to the end-face stitching stapler S1 for the time T (S1602). The magnitude of acceleration at this time is K. FIG. 17B shows the speed fluctuation of the end-face stitching stapler S1 at this stage.

  Thereafter, as shown in FIG. 15C, the post-processing device PD according to the present embodiment combines the acceleration by the first input and the acceleration by the second input set as described above (S1603). At this time, since the acceleration by the first input and the acceleration by the second input are simply combined, as shown in FIG. 15C, the speed at the end of the acceleration is the original speed ( 1 + K) is multiplied.

  Therefore, as shown in FIG. 15D, the post-processing device PD according to the present embodiment uses the first input acceleration and the second input acceleration to match the speed at the end of acceleration to the original speed. The synthesized acceleration is multiplied by 1 / (1 + K) (S1604). Thereby, the speed at the end of acceleration becomes the same speed as the original speed. FIG. 17C shows the speed fluctuation of the end-face stitching stapler S1 at this stage. Hereinafter, the drive profiles as shown in FIGS. 13D and 15D are referred to as “normal drive profiles (vibration suppression)”.

  Note that the post-processing device PD according to the present embodiment completely suppresses the natural vibration of the end-face stitching stapler S1 when K = 1 when the natural vibration of the end-face stitching stapler S1 is not attenuated with time. it can. However, in practice, the natural vibration of the end-face stitching stapler S1 is attenuated as time elapses.

Therefore, ΔT and K are respectively defined by the following equations in order to consider the attenuation of the end-face stitching stapler S1 with time. In the following equation, ω _n is the natural vibration frequency of the end-face stitching stapler S1, and ζ _n is the natural vibration damping coefficient of the end-face stitching stapler S1.

  Here, FIG. 18 shows a positional deviation when the post-processing device PD according to the present embodiment drives the stapler moving motor 159 with the drive profile created by the procedure described with reference to FIGS. 13 to 17. FIG. 18 is a diagram showing a positional deviation when the stapler moving motor 159 is driven by the drive profile created by the post-processing device PD according to the present embodiment.

  As shown in FIG. 18, the post-processing device PD according to the present embodiment gives the second input by shifting the time by the half cycle (ΔT) of the natural vibration frequency from the acceleration start time by the first input, A natural vibration having a phase opposite to that of the natural vibration generated by the first input is generated by the second input.

  That is, the post-processing device PD according to the present embodiment gives the second input by shifting the time by the half period (ΔT) of the natural vibration frequency from the acceleration start time by the first input, thereby giving the second input. The natural vibrations generated by the two inputs cancel each other. Thereby, the post-processing device PD according to the present embodiment can suppress the natural vibration of the end-face stitching stapler S1.

  In FIGS. 13 to 18, the rise time of the stapler moving motor 159 has been described, but the same applies to the fall time. Hereinafter, the method of suppressing the natural vibration of the end-face stitching stapler S1 by the procedure described with reference to FIGS. 13 and 14 is referred to as “positive casting method”, and the end-face stitching stapler is performed by the procedure described with reference to FIGS. A method for suppressing the natural vibration of S1 is referred to as a “pre-shape method”.

  However, the frequency of the natural vibration of the end-face stitching stapler S1 is that the binding needle is consumed and the weight of the end-face stitching stapler S1 is changed every time the end-face stitching stapler S1 is used, or the end-face stitching stapler S1 is moved. It changes as shown in FIG. 19 depending on how the end-face stitching stapler S1 is used, such as deterioration of the moving mechanism. In FIG. 19, the half cycle of the natural vibration frequency before the change is ΔT, and the half cycle of the natural vibration frequency after the change is ΔT + T ′.

  In such a case, the post-processing device PD according to the present embodiment gives the second input by shifting the time by ΔT from the start of acceleration by the first input. The phase is not reversed. Therefore, in such a case, as shown in FIG. 19, the post-processing device PD according to the present embodiment cannot cancel out the natural vibration caused by the first input with the natural vibration caused by the second input. Will not be suppressed.

  Therefore, the post-processing device PD according to the present embodiment decreases the natural vibration suppressing effect on the end-face stitching stapler S1 each time the end-face stitching stapler S1 is used.

  Therefore, the post-processing device PD according to the present embodiment creates a plurality of driving profiles in advance according to the usage status of the end-face binding stapler S1, and uses the end-face binding stapler S1 from the plurality of driving profiles. The driving profile according to the usage status of the binding stapler S1 is selected.

  Specifically, as shown in FIG. 20, the post-processing device PD according to the present embodiment is driven so as to give the second input to the stapler moving motor 159 by shifting the time by ΔT + T ′ from the acceleration start by the first input. Configured to create a profile. The post-processing device PD according to the present embodiment is configured in this way, so that the natural vibration due to the second input is changed to the natural vibration due to the first input even if the period of the natural vibration frequency of the end-face stitching stapler S1 is changed. It becomes possible to set it as a reverse phase.

  Therefore, the post-processing device PD according to the present embodiment can suppress the natural vibration of the end-face stitching stapler S1 even if the period of the natural vibration frequency changes due to a change in the usage status of the end-face stitching stapler S1. It becomes.

  Next, with regard to a method for the post-processing device PD according to the present embodiment to create a drive profile of the stapler moving motor 159 according to the usage situation, FIGS. 21A to 21D and FIGS. d) With reference to FIGS. 23-25, it demonstrates.

21A to 21D are graphs showing changes in the natural vibration frequency ω _n of the end-face stitching stapler S1 depending on the usage status of the end-face stitching stapler S1 in the post-processing device PD according to this embodiment. 22A to 22D are graphs showing changes in the natural vibration damping coefficient ζ _n of the end-face stitching stapler S1 depending on the usage state of the end-face stitching stapler S1 in the post-processing device PD according to this embodiment.

FIG. 23 is a table showing combinations of ω _n and ζ _n used when the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159. Hereinafter, the table shown in FIG. 23 is referred to as a “profile setting table”.

  24 and 25 are flowcharts for explaining a method for the post-processing device PD according to the present embodiment to create a drive profile of the stapler moving motor 159 according to the usage situation.

When the post-processing device PD according to the present embodiment creates the drive profile of the stapler moving motor 159, ΔT, which is a parameter representing the period of natural vibration of the end-face stitching stapler S1, as shown in Equations 1 and 2, , K which is a parameter representing the acceleration by the second input is required. Furthermore, in order to calculate ΔT and K, the natural vibration frequency ω _n of the end surface binding stapler S1 and the natural vibration damping coefficient ζ _{n of} the end surface binding stapler S1 are required.

Then, as shown in FIGS. 21A to 21D and FIGS. 22A to 22D, the natural vibration frequency ω _n of the end surface binding stapler S1 and the natural vibration damping coefficient ζ of the end surface binding stapler S1. _n varies depending on the usage state of the end-face stitching stapler S1.

Therefore, as shown in FIG. 23, the post-processing device PD according to the present embodiment stores ω _n , ζ _n and (profile setting table) corresponding to the usage state of the end-face stitching stapler S1 in the storage unit 714 in advance. deep. Then, the post-processing device PD according to the present embodiment refers to the profile setting table and selects ω _n and ζ _n according to the usage state of the end-face stitching stapler S1 when the end-face stitching stapler S1 is used. . Then, the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159 using the selected ω _n and ζ _n .

  That is, as shown in FIGS. 24 and 25, when the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159, first, the drive control unit 711 uses the end face binding stapler S1. The size relationship between the usage status of the end-face stitching stapler S1 and the specified value set for the usage status is determined (S2401 to S2408, S2501 to S2508).

Then, the drive control unit 711 selects ω _n and ζ _n corresponding to the determination result from the profile setting table, and creates a drive profile of the stapler moving motor 159 using the selected ω _n and ζ _n ( S2409 to S2416, S2509 to S2516).

  Note that the profile setting table as shown in FIG. 23 reproduces the end-face stitching stapler S1 and the stapler moving motor 159 under various use situations, and measures the natural vibration of the end-face stitching stapler S1 under each use situation. Created with.

  Next, processing when the post-processing device PD according to the present embodiment performs the binding processing operation by the end-face binding stapler S1 will be described with reference to FIG. FIG. 26 is a flowchart for explaining processing when the post-processing device PD according to the present embodiment performs the binding processing operation by the end-face binding stapler S1.

  As shown in FIG. 26, when the post-processing device PD according to the present embodiment performs the binding processing operation with the end surface binding stapler S1, first, the drive control unit 711 sets the operation mode of the stapler moving motor 159 to the vibration suppression mode. It is determined which of the non-vibration suppression mode is set (S2601).

  When it is determined in the determination processing in S2601 that the operation mode of the stapler moving motor 159 is set to the non-vibration suppression mode (S2601 / NO), the drive control unit 711 selects a normal drive profile (non-vibration suppression). (S2603).

  On the other hand, when the drive control unit 711 determines that the operation mode of the stapler movement motor 159 is set to the vibration suppression mode in the determination process in S2601, the operation mode of the stapler movement motor 159 is in the usage state. It is determined whether the vibration suppression mode corresponding to the normal vibration suppression mode is set (S2602).

  If it is determined in the determination processing in S2602 that the operation mode of the stapler moving motor 159 is set to the normal vibration suppression mode (S2602 / NO), the drive control unit 711 selects a normal drive profile (vibration suppression). (S2604).

  On the other hand, when the drive control unit 711 determines in the determination process in S2602 that the operation mode of the stapler moving motor 159 is set to the vibration suppression mode according to the use situation (S2602 / YES), the drive control unit 711 refers to the profile setting table. Then, a drive profile corresponding to the usage status of the end-face stitching stapler S1 stored in the storage unit 714 is selected (S2605).

  Then, the drive control unit 711 drives the stapler moving motor 159 according to the drive profile selected in any of S2603 to S2605, thereby executing the binding process on the sheet bundle stacked on the end surface binding processing tray F. (S2406).

  As described above, when the operation mode of the stapler moving motor 159 is set to the vibration suppression mode, the post-processing device PD according to the present embodiment executes the binding processing operation using the normal drive profile (vibration suppression). It is configured. Alternatively, when the operation mode of the stapler moving motor 159 is set to the vibration suppression mode, the post-processing device PD according to the present embodiment performs the binding processing operation using the drive profile based on the usage status of the end-face binding stapler S1. It is configured.

  On the other hand, when the operation mode of the stapler moving motor 159 is set to the non-vibration suppression mode, the post-processing device PD according to the present embodiment executes the binding processing operation using the normal drive profile (non-vibration suppression). It is configured.

  Therefore, the post-processing device PD according to the present embodiment can improve productivity by setting the operation mode of the stapler moving motor 159 to the non-vibration suppression mode, and on the other hand, by setting to the vibration suppression mode. Thus, it is possible to suppress vibration generated in the end surface binding stapler S1.

  The post-processing device PD according to the present embodiment performs the first input when the vibration suppression control is performed when the frequency of the natural vibration of the end-face stitching stapler S1 changes significantly, for example, when the frequency changes by a quarter cycle or more. And natural input generated by the second input may not be able to cancel each other and may be superimposed. Therefore, in such a case, the post-processing device PD according to the present embodiment has a larger natural vibration amplitude than when the vibration suppression control is not performed.

  Therefore, the post-processing device PD according to the present embodiment performs non-suppression as the operation mode of the stapler moving motor 159 when the amplitude of the natural vibration becomes larger when the vibration suppression control is performed than when the vibration suppression control is not performed. It is configured to set the vibration mode.

  Note that the post-processing device PD according to the present embodiment may be configured such that the user can set the operation mode of the stapler moving motor 159 by operating the display panel 163, or the natural vibration of the stapler moving motor 159 may be set. The drive control unit 711 may be configured to automatically set according to the generation mode. That is, in the present embodiment, the operation display control unit 712 or the drive control unit 711 functions as a drive mode setting unit.

As described above, the post-processing device PD according to the present embodiment stores, in advance, ω _n and ζ _n (profile setting table) corresponding to the usage state of the end-face stitching stapler S1, as shown in FIG. 714 is stored. Then, the post-processing device PD according to the present embodiment refers to the profile setting table and selects ω _n and ζ _n according to the usage state of the end-face stitching stapler S1 when the end-face stitching stapler S1 is used. . Then, the post-processing device PD according to the present embodiment creates a drive profile of the stapler moving motor 159 using the selected ω _n and ζ _n .

  The post-processing device PD according to the present embodiment is configured in this way, so that even if the period of the natural vibration frequency changes due to a change in the usage status of the end-face binding stapler S1, the end-face binding stapler S1 has a unique characteristic. Vibration can be suppressed.

  In the present embodiment, a plurality of drive profiles are created in advance according to the usage state of the end-face binding stapler S1, and the end-face binding stapler S1 is used when the end-face binding stapler S1 is used from the plurality of drive profiles. The post-processing device PD configured to select a driving profile according to the situation has been described. In addition, the post-processing device PD according to the present embodiment may be configured to create a drive profile corresponding to the usage status of the end-face stitching stapler S1 each time the end-face stitching stapler S1 is used.

  Further, in the present embodiment, the vibration suppression control for suppressing the natural vibration that occurs when the end surface binding stapler S1 moves has been described. In addition, the vibration suppression control according to the present embodiment includes sheets such as the punch unit 100, the jogger fence 53, the saddle stitching upper jogger fence 250a, the saddle stitching lower jogger fence 250b, the saddle stitching stapler S2, the shift tray 202, and the discharge claw 52a. The present invention is also applicable when suppressing the natural vibration that occurs when the processing unit moves.

  This is because the frequency of the natural vibration of these sheet processing units also changes depending on the use situation such as the weight, movement distance, number of movements, usage time, etc. This is because the natural vibration suppression effect decreases every time it is used.

  Therefore, in such a case, the edge-binding stapler S1 and the saddle stitching stapler S2 are the binding processing unit, the punch unit 100 is the sheet punching unit, the jogger fence 53, the saddle stitching upper jogger fence 250a, and the saddle stitching lower jogger fence 250b. The shift tray 202 functions as a sheet stacking unit, and the discharge claw 52a functions as a sheet discharging unit.

  Further, in the present embodiment, the vibration suppression control for suppressing the natural vibration that occurs when the end surface binding stapler S1 that binds the sheet bundle with the binding needle moves is described. In addition, the vibration suppression control according to the present embodiment is also applicable when suppressing natural vibration that occurs when the end-face binding stapler S1 that binds the sheet bundle with the adhesive moves.

PR image forming apparatus PA document reading apparatus PD post-processing apparatus PB sheet supply apparatus 159 stapler moving motor 160 encoder 161 needle remaining amount detection sensor 162 stitcher drive motor 163 display panel 164 communication I / F
701 CPU
702 RAM
703 ROM
704 HDD
705 Dedicated device 706 Operation unit 707 Display unit 708 I / F
709 Bus 710 Controller 711 Drive control unit 712 Operation display control unit 713 Communication control unit 714 Storage unit 715 Usage time measurement unit 716 Detection signal conversion unit

JP2013-063831A

Claims (8)

A sheet processing unit that performs sheet processing on the sheet by moving; and
A sheet processing moving unit for moving the sheet processing unit;
A usage status acquisition unit that acquires a usage status of at least one of the sheet processing unit and the sheet processing moving unit;
A drive mode determination unit that determines a drive mode of the sheet processing moving unit according to the acquired usage situation;
A drive control unit for driving the sheet processing moving unit according to the determined driving mode;
A sheet processing apparatus comprising:   The driving mode determination unit is configured to change the usage state from the first acceleration at the start of acceleration of the sheet processing moving unit and the acceleration start time of the sheet processing moving unit by the first acceleration to the usage state at the time of acceleration of the sheet processing moving unit. Accordingly, the composite acceleration obtained by synthesizing the second acceleration with the first acceleration is determined as a driving mode of the sheet processing moving unit by delaying a time corresponding to a half cycle of the natural vibration generated in the sheet processing unit. The sheet processing apparatus according to claim 1, wherein:   The usage status acquisition unit acquires at least one of a weight of the sheet processing unit, a usage time of the sheet processing unit, a number of times of movement of the sheet processing unit, and a movement distance of the sheet processing unit. Item 3. The sheet processing apparatus according to Item 1 or 2.   2. A drive mode setting unit that sets whether a drive mode of the sheet processing moving unit is determined according to the acquired use state or a predetermined drive mode. 3. The sheet processing apparatus according to any one of 3 above.   The sheet processing unit includes at least a binding processing unit that binds a sheet bundle, a sheet stacking unit that stacks sheets, a sheet discharge unit that discharges sheets, a sheet alignment unit that aligns sheet bundles, and a sheet punching unit that punches sheets. The sheet processing apparatus according to claim 1, wherein the sheet processing apparatus is any one of the above. An image forming apparatus for forming an image on the sheet;
An image forming system comprising the sheet processing apparatus according to claim 1. A sheet processing unit that performs sheet processing on the sheet by moving; and
A sheet processing moving unit for moving the sheet processing unit;
A usage status acquisition unit that acquires a usage status of at least one of the sheet processing unit and the sheet processing moving unit;
A control program for a sheet processing apparatus comprising:
Determining a driving mode of the sheet processing moving unit in accordance with the obtained usage situation;
Driving the sheet processing moving unit according to the determined driving mode;
A control program for a sheet processing apparatus, wherein A sheet processing unit that performs sheet processing on the sheet by moving; and
A sheet processing moving unit for moving the sheet processing unit;
A usage status acquisition unit that acquires a usage status of at least one of the sheet processing unit and the sheet processing moving unit;
A method for controlling a sheet processing apparatus comprising:
Determine the driving mode of the sheet processing moving unit according to the acquired usage situation,
A control method for a sheet processing apparatus, wherein the sheet processing moving unit is driven according to the determined driving mode.