JP5637897B2 - Paper processing apparatus, image forming system, and paper processing method - Google Patents

Description

  Embodiments described herein relate generally to a sheet processing apparatus, an image forming system, and a sheet processing method having a processing function such as folding.

  In a saddle unit having a folding unit, if some abnormality is detected during folding operation and folding is stopped, the folding roller is moved to the home position and the display means displays a message prompting jam processing. Processing devices are known.

JP 2004-59306 A

  However, even if the folding is stopped, the jam processing is not always necessary. For example, when stopping due to a load due to the thickness of the sheet, folding may be performed again without performing jam processing. In other words, an error display that prompts the user to perform jam processing each time folding is stopped and causing the user to confirm may prompt the user to perform unnecessary work, which is a burden on the user.

  Therefore, the problem to be solved by the present invention is that, when a folding error is detected, the user is not immediately prompted to cancel the error, but the folding is performed again, and the load on the user due to the folding error is reduced. It is to provide a paper processing apparatus capable of performing the above.

In order to solve the above problems, a sheet processing apparatus according to an embodiment of the present invention includes a folding roller that further folds a folded sheet, a direction that supports the folding roller and is orthogonal to the sheet conveyance direction. A moving support unit that is moved to the motor , a motor that drives the moving support unit ,
When the stop of the previous SL movable support portion has occurred, when the number of stops before Symbol movable support portion is less than the predetermined number of times, is retracted to the moving support portion retracted position, again, drives the movable support part And a control unit that tries the folding operation by the folding roller, and the movement support unit moves from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction, and The sheet is folded on the sheet by moving from the second position to the first position, and the control unit moves the movement support unit from the first position to the second position. When the stop occurs, the movement support portion is retracted using the first position as a retracted position, and when the stop occurs when the movement support portion moves from the second position to the first position, The moving support portion with the second position as a retracted position Wherein the retracting.

1 is an image forming system to which an embodiment of the present invention is applied. The perspective view which shows the shift mechanism to which one Embodiment of this invention is applied. The perspective view which shows the shift tray raising / lowering mechanism with which one Embodiment of this invention is applied. The perspective view which shows the paper discharge part to the shift tray to which one Embodiment of this invention is applied. FIG. 3 is a plan view of a staple processing tray to which an embodiment of the present invention is applied as viewed from a direction perpendicular to a sheet conveyance surface. FIG. 2 is a perspective view showing a staple processing tray to which the embodiment of the present invention is applied and a driving mechanism thereof. The perspective view which shows the discharge | release mechanism of the sheet | seat bundle with which one Embodiment of this invention is applied. The perspective view which shows the end surface binding stapler and drive mechanism to which one Embodiment of this invention is applied. The perspective view which shows the diagonal rotation mechanism of the stapler with which one Embodiment of this invention is applied. Operation | movement explanatory drawing of the moving mechanism of the folding plate to which one Embodiment of this invention is applied. It is operation | movement explanatory drawing of the moving mechanism of the folding plate to which one Embodiment of this invention is applied, and shows the state before entering into a middle folding operation | movement. Sectional drawing which shows the staple processing tray and middle folding processing tray to which one Embodiment of this invention is applied. 1 is a front view of a folding roller unit to which an embodiment of the present invention is applied. 1 is a side view of a folding roller unit to which an embodiment of the present invention is applied. 1 is a block diagram illustrating control of a sheet processing apparatus to which an embodiment of the present invention is applied. 6 is a flowchart relating to a retry for additional folding of the sheet processing apparatus according to the first embodiment. 9 is a flowchart relating to retry of folding of the sheet processing apparatus according to the second embodiment. 9 is a flowchart relating to retry of folding of the sheet processing apparatus according to the second embodiment. 9 is a flowchart relating to retry of folding of the sheet processing apparatus according to the second embodiment. An example of the screen display of the operation panel in 2nd Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
A first embodiment will be described with reference to FIGS.

  FIG. 1 is a cross-sectional view showing a sheet post-processing apparatus PD as a sheet processing apparatus to which an embodiment of the present invention is applied and a part of an image forming apparatus PR. The sheet post-processing apparatus PD and the image forming apparatus PR are collectively referred to as an image forming system.

  In FIG. 1, the paper post-processing device PD is attached to the image forming apparatus PR, and the recording medium discharged from the paper discharge port of the image forming device PR is guided to the introduction port 18 of the paper post-processing device PD. The paper passes through a conveyance path A having post-processing means for performing post-processing, a conveyance path B leading to the upper tray 201, a conveyance path C leading to the shift tray 202, a processing tray F for performing alignment and stapling (hereinafter, stapling processing). The paper is distributed by the branch claws 15 and 16 to the conveyance path D leading to the tray).

  The paper that is guided to the staple processing tray F through the transport paths A and D, and aligned and stapled by the staple processing tray is guided to the shift tray 202 by the branch guide plate 54 and the movable guide 55 that are deflecting means. C, configured to be distributed to a processing tray G for folding (hereinafter also referred to as a middle folding processing tray). The sheet that is folded in the middle folding processing tray G is strengthened by the folding roller unit 400 and is guided to the lower tray 203 through the conveyance path H. Further, a branch claw 17 is disposed in the conveyance path D and is held in the state shown in FIG. 1 by a low load spring. After the trailing edge of the paper passes through the branching claw 17, among the conveying rollers 9 and 10 and the staple discharging roller 11, the conveying roller 9 and the refeeding roller 8 are reversed so that the trailing edge is guided to the paper accommodating portion E and stays there. Then, it is transported while being superposed on the next sheet. By repeating this operation, it is possible to carry two or more sheets in a superimposed manner.

  In the conveyance path A common to each of the upstream of the conveyance paths B, C, and D, an inlet sensor 301 that detects a sheet received from the image forming apparatus PR, an inlet roller 1, a punch unit 100, and a punch hopper 101 downstream thereof. The conveying roller 2 and the branching claws 15 and 16 are sequentially arranged. The branch claws 15 and 16 are held in the state shown in FIG. 1 by springs. When the solenoid is turned on, the branch claws 15 are rotated upward and the branch claws 16 are rotated downward, respectively. , C, and D.

  In the paper post-processing apparatus PD, punching (punching unit 100), paper alignment + edge binding (jogger fence 53, edge binding stapler S1), paper alignment + saddle binding (jogger fence 53, saddle stitching) is performed on the paper. Each process such as stapler S2), paper sorting (shift tray 202), and middle folding (folding plate 74, folding roller 81, folding roller unit 400) is performed.

  The shift tray paper discharge unit I located at the most downstream portion of the paper post-processing apparatus PD includes a shift paper discharge roller 6, a return roller 13, a paper surface detection sensor 330, a shift tray 202, and a shift mechanism J shown in FIG. 3 has a shift tray lifting mechanism K shown in FIG. 2 is an enlarged perspective view of the main part showing the shift mechanism J, and FIG. 3 is an enlarged perspective view of the main part of the shift tray lifting mechanism K.

  The return roller 13 in FIGS. 1 and 3 contacts the paper discharged from the shift paper discharge roller 6 and abuts the rear end of the paper against the end fence 32 shown in FIG. The return roller 13 is rotated by the rotational force of the shift paper discharge roller 6. A tray rise limit switch 333 is provided in the vicinity of the return roller 13, and when the shift tray 202 is raised to push up the return roller 13, the tray rise limit switch 333 is turned on and the tray lifting / lowering motor 168 is stopped. This prevents overrun of the shift tray 202. Also, in the vicinity of the return roller 13, as shown in FIG. 1, a paper surface detection sensor 330 is provided as a paper surface position detecting means for detecting the paper surface position of the paper discharged from the shift tray 202 or the sheet bundle.

  The paper surface detection sensor 330 includes the paper surface detection lever 30 shown in FIG. 3, a paper surface detection sensor (for stapling) 330a, and a paper surface detection sensor (for non-staple) 330b. The paper surface detection lever 30 includes a contact portion 30a that rotates around the shaft portion of the lever and contacts the upper surface of the rear end of the paper loaded on the shift tray 202, and a fan-shaped blocking portion 30b.

  When the paper surface detection sensor (for stapling) 330a and the paper surface detection sensor (for non-stapling) 330b detect that the sheet stacking amount has reached a predetermined height, the shift tray 202 is lowered by a predetermined amount by driving the tray lifting / lowering motor 168. To do. Thereby, the paper surface position of the shift tray 202 is kept substantially constant.

  FIG. 4 is a perspective view illustrating a structure of a paper discharge unit to the shift tray 202.

  1 and 4, the shift paper discharge roller 6 has a drive roller 6a and a driven roller 6b. The driven roller 6b is supported on the upstream side in the paper discharge direction and is swingable in the vertical direction. It is supported rotatably at the free end of the. The driven roller 6b abuts on the driving roller 6a by its own weight or urging force, and the paper is nipped between the rollers 6a and 6b and discharged.

  When the bound sheet bundle is discharged, the open / close guide plate 33 is pulled upward and returned at a predetermined timing. This timing is determined based on the detection signal of the shift paper discharge sensor 303. . The stop position is determined based on the detection signal of the paper discharge guide plate opening / closing sensor 331 and is driven by the paper discharge guide plate opening / closing motor 167. The discharge guide plate opening / closing motor 167 is driven and controlled by turning on / off a discharge guide plate opening / closing limit switch 332.

  The configuration of the staple processing tray F that performs the staple processing will be described.

  5 is a plan view of the staple processing tray F viewed from a direction perpendicular to the sheet conveying surface, FIG. 6 is a perspective view showing the staple processing tray F and its driving mechanism, and FIG. 7 is a perspective view showing the discharge mechanism of the sheet bundle. is there. First, as illustrated in FIG. 6, the sheets guided to the staple processing tray F by the staple discharge roller 11 are sequentially stacked on the staple processing tray F.

  In this case, alignment in the vertical direction (paper conveyance direction) is performed by the tapping roller 12 for each sheet, and alignment in the horizontal direction (direction orthogonal to the sheet conveyance direction, also referred to as the sheet width direction) is performed by the pair of jogger fences 53. Is called. The edge-binding stapler S1 (see FIG. 5) is driven by a stapling signal from the control unit between job breaks, that is, from the last sheet of the sheet bundle to the first sheet of the next sheet bundle, and the binding process is performed. The sheet bundle subjected to the binding process is immediately sent to the shift paper discharge roller 6 by the discharge belt 52 provided with the discharge claw 52a (see FIG. 7), and discharged to the shift tray 202 set at the receiving position. .

  As shown in FIG. 7, the discharge claw 52a detects the home position by the discharge belt HP sensor 311, and the discharge belt HP sensor 311 is turned on / off by the discharge claw 52a. Two discharge claws 52a are arranged at opposing positions on the outer periphery of the discharge belt 52, and the sheet bundle stored in the staple processing tray F is moved and conveyed alternately. Further, if necessary, the discharge belt 52 is rotated in the reverse direction, and the discharge claw 52a waiting to move the paper bundle and the back side of the discharge claw 52a on the opposite side of the paper bundle stored in the staple processing tray F It is also possible to align the tips in the transport direction. The discharge claw 52a also functions as a means for aligning the sheet bundle in the sheet conveyance direction.

  As shown in FIG. 5, a discharge roller 56 is arranged and fixed on the drive shaft of the discharge belt 52 driven by the discharge motor 157 symmetrically with respect to the discharge belt 52 and its drive pulley 62 at the alignment center in the paper width direction. Has been. Further, the peripheral speed of these discharge rollers 56 is set to be higher than the peripheral speed of the discharge belt 52.

  As shown in FIG. 6, the tapping roller 12 is given a pendulum motion by the tapping solenoid 170 about the fulcrum 12 a and intermittently acts on the sheet fed to the staple processing tray F to push the sheet against the rear end fence 51. Hit it. The jogger fence 53 is driven via a timing belt by a jogger motor 158 capable of forward and reverse rotation, and reciprocates in the paper width direction.

  In FIG. 8, the end-face binding stapler S1 is driven via a timing belt by a staple moving motor 159 capable of forward and reverse rotation, and moves in the paper width direction in order to bind a predetermined position of the paper edge. At one end of the moving range, there is a stapler movement HP sensor 312 that detects the home position of the end-face binding stapler S1, and the binding position in the paper width direction is controlled by the movement amount of the end-face binding stapler S1 from the home position. Is done.

  As shown in the perspective view of FIG. 9, the end-face stitching stapler S1 is configured so that the needle driving angle can be changed parallel to or obliquely with respect to the end of the paper. Further, only the binding portion mechanism portion of the end-face stitching stapler S1 at the home position. Is configured so that the needle can be easily exchanged. The arrows shown in FIG. 9 indicate the moving direction of the end face binding stapler S1. The end surface binding stapler S1 is rotated obliquely by the oblique motor 160, and when the needle replacement position sensor 313 detects that a predetermined oblique angle or the needle replacement position has been reached, the oblique motor 160 stops. When the diagonal strike is finished or the needle exchange is finished, the original position is rotated to prepare for the next staple.

  As shown in FIGS. 1 and 5, in the pair of saddle stitch staplers S2, the distance from the rear end fence 51 to the needle striking position of the saddle stitch stapler S2 corresponds to half of the conveyance direction length of the maximum sheet size capable of saddle stitching. The two are arranged so as to be more than the distance to be aligned, and are arranged symmetrically with respect to the alignment center in the paper width direction, and are fixed to the stay 63.

  When performing saddle stitching, the direction perpendicular to the sheet conveyance direction is aligned by the jogger fence 53, and the sheet conveyance direction is aligned by the trailing edge fence 51 and the hitting roller 12, and then the discharge belt 52 is driven to release the nail. At 52a, the rear end of the sheet bundle is lifted so that the central portion in the sheet bundle conveyance direction is positioned at the binding position of the saddle stitching stapler S2, and stopped at this position to execute the binding operation. The bound sheet bundle is conveyed to the saddle stitching processing tray G side and folded in half.

  In FIG. 5, reference numeral 64 a denotes a front side plate, 64 b denotes a rear side plate, and reference numeral 310 denotes a paper presence / absence sensor that detects the presence / absence of paper on the staple processing tray F.

  10 and 11 are explanatory views of the operation of the moving mechanism of the folding plate 74 for performing the middle folding.

  The folding plate 74 is supported by loosely fitting the long hole portions 74a to the two shafts 64c erected on the front and rear side plates 64a and 64b. Further, the shaft portion 74b erected from the folding plate 74 is loosely fitted into the long hole portion 76b of the link arm 76, and the link arm 76 swings around the fulcrum 76a. The plate 74 reciprocates in a direction perpendicular to the lower bundle conveyance guide plate 91 and the upper bundle conveyance guide plate 92.

  The folding plate drive cam 75 is rotated in the direction of the arrow in FIG. 10 by the folding plate drive motor 166. The stop position is determined by detecting both end portions of the half-moon shaped blocking portion 75a by the folding plate HP sensor 325.

  FIG. 10 shows the home position position of the folding plate 74 completely retracted from the sheet bundle accommodation area of the processing tray G. When the folding plate drive cam 75 is rotated in the direction of the arrow, the folding plate 74 moves in the direction of the arrow and protrudes into the sheet bundle accommodation area of the processing tray G. FIG. 11 shows a position where the center of the sheet bundle of the processing tray G is pushed into the nip of the folding roller 81. When the folding plate driving cam 75 is rotated in the direction of the arrow, the folding plate 74 moves in the direction of the arrow and retracts from the sheet bundle accommodation area of the processing tray G.

  Next, the folding roller unit will be described. As shown in FIG. 1, a folding roller unit 400 is provided on the conveyance path H between the folding roller pair 81 and the paper discharge roller pair 83. The sheet bundle folded by the folding plate 74 is pushed into the nip of the folding roller 83 to make a crease, and then the crease is strengthened by the folding roller unit 400.

  As shown in the front view of FIG. 13 and the side view of FIG. 14, the folding roller unit 400 includes a folding roller 409, a folding roller support mechanism, and a folding roller driving mechanism. As shown in FIG. 14, the drive mechanism of the folding roller includes a driving pulley 402, a driven pulley 404, an endless timing belt 403 stretched between the pulleys 402 and 404, and a timing belt 403. The motor includes a pulse motor 401 that rotates and a stop detection sensor 401 a that detects a stop of the rotation of the pulse motor 401.

  The support mechanism for the folding roller 409 is coupled to the timing belt 403, and the moving support unit 407 that moves integrally, the guide unit 405 that the moving support unit 407 slides to regulate the moving direction, and the moving support unit 407. The upper guide plate 415 that extends to the anti-folding roller side, restricts the inclination of the folding roller 409 and prevents the guide portion 405 from bending, the folding roller support portion 408, and the folding roller 409 in the sheet bundle folding direction. It is comprised with the elastic material 411 as an elastic urging means which elastically urges | biases (downward in FIG. 13, FIG. 14). The support mechanism is disposed in a direction perpendicular to the paper transport direction, and the drive mechanism folds the roller 409 in the support mechanism in the installation direction of the support mechanism.

  The rotational drive of the pulse motor 401 is transmitted to the moving support unit 407 coupled to the timing belt 403 by the timing belt 403 stretched between the driven pulley 402 and the driving pulley 404, and the moving support unit 407 is a guide unit. It is guided by 405 and moves while sliding in the thrust direction of the guide portion 405. Between the movement support portion 407 and the upper guide plate 415, there is a bend prevention portion 406. The bend prevention portion 406 is supported by the movement support portion 407 in a rotatable state and is in the form of a roller. It can move in the axial direction of the guide part 405 integrally with the part 407. The folding roller 409 is disposed between the movement support portion 407 and the lower guide plate 416, and has a friction portion 410 on the outer periphery of the folding roller 409.

  The rotation shaft of the folding roller 409 is supported by a folding roller support unit 408, and the folding roller support unit 408 is supported in a state where it can move in the vertical direction while sliding with the moving support unit 407. . Further, the folding roller support portion 408 is pressed toward the lower guide plate 416 from the moving support portion 407 by the elastic material 411. As a result, the folding roller 409 can move in the thrust direction of the guide unit 405 integrally with the movement support unit 407, and the folding roller 409 is always pressed toward the lower guide plate 416 by the elastic member 411. And can be moved in the vertical direction.

  Further, in the thrust direction of the guide portion 405, a first position detection sensor 412 and a second position detection sensor 413 are provided as detection means for detecting the position of the movement support portion 407. When the detection plate 417 of the movement support unit 407 arrives at the detectable position of each of the first position detection sensor 412 and the second position detection sensor 413, the first and second position detection sensors 412 and 413 move and support. Part 407 is detected. The folding roller 409 includes a position detected by the first position detection sensor 412 (hereinafter referred to as a first position) and a position detected by the second position detection sensor 413 (hereinafter referred to as a second position). Is moved by the moving support portion 407. The reciprocating operation between the first position and the second position is performed as a folding operation. A sheet bundle detection sensor 414 detects a sheet bundle conveyed to the folding roller unit 400.

  FIG. 15 is a block diagram illustrating control of the image forming system according to the present embodiment. The sheet post-processing device PD includes a control unit 1500, a solenoid 1504, a motor group 1505, a sensor group 1506, a storage unit 1507, and an I / O interface 1508 that handles input / output of information with external devices. Information is exchanged with the image forming apparatus PR via the I / O interface 1508. The image forming apparatus PR has an operation panel 1510.

  The control unit 1500 includes a CPU (Central Processing Unit) 1501, a RAM (Random Access Memory) 1502, and a ROM (Read Only Memory) 1503. The CPU 1501 is a processor that controls the entire control unit 1500. The RAM 1502 is a memory that temporarily stores work data and stores reference data. A ROM 1503 is a nonvolatile memory, and stores a control program and control data for controlling the sheet post-processing apparatus PD. The CPU 1501 implements various processes and various functions by operating based on a control program stored in the ROM 1502. Although the CPU 1501 is used as the processor, the type of processor is not limited to this.

  A motor group 1505 includes various types of motors that include a pulse motor 401 of a folding roller unit and that drive each part of the sheet post-processing apparatus. The motor group 1505 and the solenoid 1504 are driven by an instruction from the control unit 1500.

  The sensor group 1503 includes, for example, an inlet sensor 301, a shift paper discharge sensor 303, a paper surface detection sensor 330, a paper discharge guide plate open / close sensor 331, a paper presence / absence sensor 310, a discharge belt HP sensor 311, a stapler movement HP sensor 312, and a needle replacement. A position sensor 313, a folding plate HP sensor 325, a stop detection sensor 401a, a first position detection sensor 412, a second position detection sensor 413, and a sheet bundle detection sensor 414 are included, and signals from each sensor are input to the CPU 1501. The

  The storage unit 1507 stores the accumulation of the number of stops of the pulse motor 401 at the time of retrying the additional folding roller unit described later. After a stop signal of the pulse motor 401 is sent from the stop detection sensor 401 a of the pulse motor 401 to the control unit 1500, the accumulation of the number of stops is stored in the storage unit 1507. The accumulated stop count of the pulse motor 401 is reset when the folding operation is normally completed.

  An operation panel 1510 included in the image forming apparatus PR serves as a display unit and an input unit. That is, a display for displaying a notification to the user and a user interface for inputting an operation instruction from the user. The operation panel 1510 includes, for example, a display device with a built-in touch panel, for example, a touch key of a display unit such as an LCD (Liquid Crystal Display). The operation panel 1510 allows the user to confirm the notification and input an operation instruction. Note that the operation panel 1510 may be included in the sheet post-processing apparatus PD.

  FIG. 16 is a flowchart relating to retry control for additional folding according to the present embodiment.

  When the folding increase is started, the control unit 1500 starts the movement support unit 407 that moves the folding roller 409 from the first position to the second position (S101). Next, the control unit 1500 determines whether or not a stop of the pulse motor 401 that moves the movement support unit 407 is detected by the stop detection sensor 401a during the movement from the first position to the second position ( S102). Stopping the pulse motor 401 during the movement from the first position to the second position means that the folding roller stops between the first position and the second position, and an error in folding increases. Is going to happen.

  When the stop of the pulse motor 401 is detected and it is determined that the moving support unit 407 that moves together with the folding roller 409 is stopped while moving from the first position to the second position (YES in S102). ) Retry the folding operation. During execution of this retry operation, it is conceivable that the pulse motor 401 stops again, and the control unit 1500 adds the number of detections of the stop of the pulse motor 401 and stores it in the storage unit 1507 (S110). The control unit 1500 determines whether or not the cumulative number of detections of the stop of the pulse motor 401 stored in the storage unit 1507 is equal to or greater than a predetermined number (S111). The predetermined number of accumulated times of detection of the stop of the pulse motor 401 is set to about 2 to 3 times, for example. This is because if the predetermined number of times is set to a large number, there is a possibility that the print job may be delayed while repeating the additional retries.

  When it is determined that the stop of the pulse motor 401 has been detected a predetermined number of times or more (YES in S111), the control unit 1500 displays a folding error on the operation panel 1510 (S130). By displaying an error on the operation panel 1510, the user is prompted to perform jam processing.

  When it is determined in S111 that the detection of the stop of the pulse motor 401 is less than the predetermined number of times (NO in S111), the control unit 1500 starts to retract the movement support unit 407 to the first position (S112). Thereafter, when the first position detection sensor 412 detects the movement support unit 407 (S113), the control unit 1500 determines that the movement support unit 407 has been retracted to the first position. Then, the process returns to S101 to start the retry of additional folding, and the control unit 1500 moves the movement support unit 407 from the first position to the second position.

  If the stop of the pulse motor 401 is not detected in S102 (NO in S102) and the first position detection sensor 413 detects the movement support unit 407 (S103), the movement support unit 407 is moved to the second position. Complete. Then, the control unit 1500 starts to move the movement support unit 407 from the second position to the first position (S104).

  Next, the control unit 1500 determines whether or not the stop of the pulse motor 401 that moves the movement support unit 407 is detected by the stop detection sensor 401a during the movement from the second position to the first position ( S105). When the stop of the pulse motor 401 is detected and it is determined that the moving support unit 407 that moves together with the folding roller 409 is stopped while moving from the second position to the first position (YES in S105). ), The control unit 1500 adds the number of detections of the stop of the pulse motor 401, and stores it in the storage unit 1507 (S120). The control unit 1500 determines whether or not the cumulative number of detections of the stop of the pulse motor 401 stored in the storage unit 1507 is equal to or greater than a predetermined number (S121).

  When it is determined that the stop of the pulse motor 401 is detected a predetermined number of times or more (YES in S121), the control unit 1500 displays a folding error on the operation panel 1510 (S130). By displaying an error on the operation panel 1510, the user is prompted to perform jam processing.

  When it is determined in S121 that the detection of the stop of the pulse motor 401 is less than the predetermined number (NO in S121), the control unit 1500 starts to retract the movement support unit 407 to the second position (S122). Thereafter, when the second position detection sensor 413 detects the movement support unit 407 (S103), the control unit 1500 determines that the retraction of the movement support unit 407 to the first position has been completed. Then, in order to start the retry of additional folding, the control unit 1500 starts to move the movement support unit 407 from the second position to the first position (S104).

  If the stop of the pulse motor 401 is not detected in S105 (NO in S105) and the second position detection sensor 413 detects the movement support unit 407 (S106), the movement support unit 407 is moved to the first position. Complete. That is, folding is completed. Thereafter, the control unit 1500 resets the cumulative number of detections of the stop of the pulse motor 401 stored in the storage unit 1507 (S107), and the process is completed.

  In the above embodiment, the stop detection sensor 401a of the pulse motor 401 detects whether or not the movement support unit 407 has stopped in the middle of the folding operation. However, the method for detecting the stop of the movement support unit 407 is as follows. Not limited to this. For example, if the movement support unit 407 has not completed the movement from the first position to the second position or the movement from the second position to the first position within a predetermined time, the folding is increased. You may consider that the movement support part 407 has stopped on the way.

  Specifically, when the movement support unit 407 is moved from the first position to the second position, the second position is detected within a predetermined time after the first position detection sensor 412 detects the movement support unit 407. When the detection sensor 413 does not detect the movement support part 407 or when the movement support part 407 is moved from the second position to the first position, the second position detection sensor 413 detects the movement support part 407. If the first position detection sensor 412 does not detect the movement support part 407 within a predetermined time after that, it can be considered that the movement support part 407 is stopped during the movement.

  As described above, when the stop of the pulse motor during the folding operation is detected, the user is not instructed to cancel the error immediately, but by retrying the folding if the pulse motor stops within the predetermined number of times. When the user's error handling is not necessary, the folding can be performed immediately, and the job can be performed smoothly. In addition, it is not necessary for the user to confirm an error every time folding is stopped, and the burden on the user can be reduced.

(Second Embodiment)
A second embodiment will be described with reference to FIGS. Hereinafter, the same reference numerals are used for the same parts as those of the first embodiment, and only the characteristic parts of the present embodiment will be described.

  This embodiment is an embodiment in which permission from the user is sought before more retries are performed, and the intention of the user is reflected more. FIG. 17 is a flowchart relating to the retry control for additional folding according to the present embodiment. Portions that perform the same operations as those in the flowchart of FIG. 16 of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 18, if it is determined in S121 that the detection of the stop of the pulse motor 401 is less than the predetermined number (NO in S111), the operation panel 1510 displays whether or not to perform additional retries and folds to the user. The user is prompted to input whether to perform additional retries (S201). FIG. 20 is an example of a screen displayed on operation panel 1510.

  When the control unit 1500 confirms the input of retry execution from the user via the operation panel 1510 (YES in S201), the control unit 1500 starts to retract the movement support unit 407 to the first position (S112). Thereafter, the operations after S113 are performed.

  If the input of retry execution from the user is not confirmed in S201 (NO in S201), the process proceeds to S130 in FIG. 17, and the control unit 1500 causes the operation panel 1510 to display a folding error.

  If YES in S105, the operation up to S121 in FIG. 19 is performed, and if it is determined in S121 that the number of stops is less than the predetermined number (NO in S121), the operation panel 1510 displays whether additional retry is to be performed. The user is prompted to input whether or not to retry additional folding (S202). Also at this time, as in S201, for example, the screen shown in FIG.

  Upon confirming the retry execution input from the user (YES in S202), the control unit 1500 starts to retract the movement support unit 407 to the second position (S122). Thereafter, the operations after S103 are performed.

  If the input of retry execution from the user is not confirmed in S202 (NO in S202), the process proceeds to S130, and the control unit 1500 displays a folding error on the operation panel 1510.

  If the above embodiment is adopted, it is possible to reflect the user's intention as to whether or not to retry when there is an error in folding. For example, this embodiment is effective when the user does not want to retry the additional folding and wants to immediately cancel the error.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

400 Folding roller unit 401 Pulse motor 401a Stop detection sensor 405 Guide unit 407 Movement support unit 408 Folding roller instruction unit 409 Folding roller 411 Elastic material 412 First position detection sensor 413 Second position detection sensor 1500 Control unit 1510 Operation panel PD Paper post-processing device PR Image forming device

Claims (10)

A folding roller for further folding the folded paper;
A moving support unit that supports the folding roller and moves it in a direction perpendicular to the paper conveying direction;
A motor for driving the movement support unit ;
When the stop of the previous SL movable support portion has occurred, when the number of stops before Symbol movable support portion is less than the predetermined number of times, is retracted to the moving support portion retracted position, again, drives the movable support part And a control unit for trying a folding operation by the folding roller,
Equipped with,
The movement support unit is configured to fold a sheet by moving from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction and from the second position to the first position. When the stop occurs when the movement support unit moves from the first position to the second position, the control unit sets the movement support unit to the retracted position. retracted to the the stop moves from the second position of the support portion during the movement to the first position occurs, characterized Rukoto is retracted the moving support portions said second position as the retracted position Paper processing device. A folding roller for further folding the folded paper;
A moving support unit that supports the folding roller and moves it in a direction perpendicular to the paper conveying direction;
A motor for driving the movement support unit;
A stop detection sensor for detecting the stop of the motor;
When the motor stops, if the number of times the motor is stopped is less than a predetermined number, the control unit causes the folding support roller to try the folding operation after retracting the moving support unit to the retracted position. When,
Comprising
The movement support unit is configured to fold a sheet by moving from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction and from the second position to the first position. When the motor stops when the movement support unit moves from the first position to the second position, the control unit moves the movement using the first position as a retracted position. The support unit is retracted, and when the movement support unit is stopped from the second position to the first position, the movement support unit is retracted using the second position as a retracted position. A paper processing apparatus. The moving by the movement of the support portion, the sheet processing apparatus according to claim 1 or 2, characterized in that additional folding of the sheet by the folding rollers resets the number of stops before Symbol mobile support and complete. A first position detection sensor for detecting that the movement support unit is located at the first position;
4. The sheet processing apparatus according to claim 1 , further comprising a second position detection sensor configured to detect that the movement support unit is positioned at the second position. 5. Wherein, when moving the movable support portion at the second position from said first position, from said first position detection sensor is to test knowledge of the mobile support unit within a predetermined time the If the position detection sensor 2 does not test knowledge of the movement support part, or, when moving the movable support unit to the first position from the second position, the movement by the second position detection sensor when the supporting portion after detection knowledge within a predetermined time the first position detection sensor does not test knowledge of the movement support part, it determines that the moving support portion is stopped in the middle of the folding operation The sheet processing apparatus according to any one of claims 1 to 4, wherein the sheet processing apparatus includes: When continuous detection known number of stop of movement of the movable supporting portion by the stop detection sensor is less than the predetermined number of times, the control unit performs after stopping of the movement support part, the fold enhancement from the user again 6. The sheet processing apparatus according to claim 1, wherein when the instruction is input, the movement support unit is driven to perform folding again. 6. An image forming apparatus having an image forming unit that forms an image on a sheet based on input image information, and a sheet feeding unit that feeds the sheet to the image forming unit;
A folding roller that folds the paper on which the image has been formed by the image forming apparatus, a folding roller that folds the paper folded by the folding roller, and supports the folding roller and is orthogonal to the paper conveyance direction. a movable support portion for moving in the direction, a motor for driving the moving support portion, and the stop detection sensor for detecting the stop of the motor, when the stopping of previous SL motor occurs, the motor according to the stop detection sensor by the detection of stopping to detect the stop of the movable support unit, if the number of stops before SL motor is less than the predetermined number of times, is retracted to the moving support portion retracted position, again, drives the movable support part And a sheet processing device having a control section for trying a folding operation by the folding roller ,
The movement support unit is configured to fold a sheet by moving from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction and from the second position to the first position. When the stop occurs when the movement support unit moves from the first position to the second position, the control unit sets the movement support unit to the retracted position. retracted to the the stop moves from the second position of the support portion during the movement to the first position occurs, characterized Rukoto is retracted the moving support portions said second position as the retracted position images forming system shall be the. An image forming apparatus having an image forming unit that forms an image on a sheet based on input image information, and a sheet feeding unit that feeds the sheet to the image forming unit;
A folding roller that folds the paper on which the image has been formed by the image forming apparatus, a folding roller that folds the paper folded by the folding roller, and supports the folding roller and is orthogonal to the paper conveyance direction. A movement support unit that moves in a direction to move, a motor that drives the movement support unit, a stop detection sensor that detects a stop of the motor,
When the motor stops, if the number of times the motor is stopped is less than a predetermined number, the control unit causes the folding support roller to try the folding operation after retracting the moving support unit to the retracted position. And a paper processing apparatus having
The movement support unit is configured to fold a sheet by moving from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction and from the second position to the first position. When the motor stops when the movement support unit moves from the first position to the second position, the control unit moves the movement using the first position as a retracted position. The support unit is retracted, and when the movement support unit is stopped from the second position to the first position, the movement support unit is retracted using the second position as a retracted position. An image forming system. A display for notifying the user;
An input unit for the user to input instructions;
When continuous detection known number of stop of movement of the movable supporting portion by the stop detection sensor is less than the predetermined number of times, after the stop of the movable support unit, whether or not to perform the folding of the trial on the display unit The display for prompting input is performed, and when the control unit receives an input of an instruction to perform the folding again through the input unit, the moving support unit is driven to perform the folding again. Item 9. The image forming system according to any one of Items 7 and 8 . In a sheet processing apparatus having a folding roller that folds a folded sheet and a moving support unit that supports and moves the roller .
By driving a moving support unit that supports the folding roller in a direction perpendicular to the paper conveyance direction, the folding roller is used to fold the paper,
During the folding operation of the sheet by the folding roller, when the movement support unit stops and tries the folding operation again, the number of stops of the movement support unit is accumulated and stored,
When the stop of the movement support unit occurs, if the stored number of stops of the movement support unit is less than a predetermined number, the movement support unit is retracted to a retreat position,
After retracting the movement support part, the movement support part is driven again, and the folding operation by the folding roller is tried,
The movement support unit is configured to fold a sheet by moving from a first position to a second position that are separated from each other in a direction orthogonal to the sheet conveyance direction and from the second position to the first position. When the stop occurs when the movement support unit moves from the first position to the second position, the control unit sets the movement support unit to the retracted position. And when the movement support unit stops when the movement support unit moves from the second position to the first position, the movement support unit is retracted using the second position as a saving position. Paper handling method.

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