JP2009067555A - Sheet material aligning device and sheet post-processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suitably perform width adjustment for aligning sheet materials even if sheet materials different in size are mixedly loaded. <P>SOLUTION: The size of a discharged sheet material is received, movement positions of jogger fences are determined according to the size (S1-S5), and it is determined whether or not the received sheet material is a first one (S6). When it is not the first one (No in a processing S6), it is determined whether there is any change in the size of the discharged sheet material (S11). When there is any change in size (Yes), width adjustment values of the sizes of a current sheet material and a next sheet material are compared with each other (S12). When the current sheet material is larger in size than the next sheet material (No), a change in size is not performed to advance to processing S8. When the next sheet is larger in size than the current sheet material (Yes in the processing S12), the width adjustment value is changed (S13) to advance to the processing S8. By adopting the maximum width adjustment value out of the mixed sheet materials with respect to all the mixed sheet materials, the width adjustment of an aligning means is suitably performed even if the mixed sheet materials different in width adjustment value are loaded. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet material aligning device that aligns conveyed sheet materials and a sheet post-processing apparatus including the sheet material aligning device.

  Conventionally, as a sheet material aligning device that aligns an image-recorded sheet material conveyed from an image forming apparatus by a jogger fence, Japanese Patent Application Laid-Open No. 2004-26883 discloses a sheet width direction alignment with respect to an image-recorded sheet material. An alignment device is described that performs different widths for different sizes.

  Patent Document 2 describes a paper processing apparatus that performs a folding process at a predetermined position in the case of simple bookbinding, and Patent Document 3 describes a bookbinding process in which end surfaces of sheets are aligned and stapled. Is a process for conveying a sheet bundle in the mixed binding mode.

Further, Patent Document 4 describes that in the binding mode, when a mixed document is a mixed original, the process is stopped and a suitable process is selected by notification, and Patent Document 5 describes matching of sheet materials. In order to do this, it is described that the alignment member is moved up and down and shifted.
Japanese Patent No. 2960770 JP 2004-99187 A Japanese Patent No. 3736203 JP 2001-117430 A JP 2006-137582 A

  As described above, in the sheet post-processing apparatus having the aligning device that aligns the sheet material discharged from the image forming apparatus, the jogger fence is operated to bring the sheet bundle into contact with the sheet material in the width direction. Those having a matching mechanism are generally known. In this type of sheet post-processing apparatus, when the width of the conveyed sheet material varies due to an error at the time of cutting, the alignment accuracy deteriorates. The width adjustment value used during the alignment operation can be adjusted.

  A sheet post-processing apparatus having this alignment mechanism can simultaneously align and align sheet materials of different sizes (for example, “A3” and “A4 horizontal”) as long as the standard sheet width is the same. However, since the sheet material size and the jogger fence width adjustment value are in a one-to-one correspondence, the adjustment of the jogger fence width adjustment value is not properly performed when multiple types of sheet sizes are mixed. There was a problem.

  The present invention is directed to solving the problems of the prior art, and a sheet material aligning apparatus and sheet that can appropriately adjust the width of a jogger fence even when mixedly mixed sheet materials of different sizes are provided. An object is to provide a post-processing apparatus.

  In order to achieve the above object, the invention described in claim 1 according to the present invention is applied to the stacking means for stacking the sheet material to be conveyed, and both ends parallel to the conveying direction of the loaded sheet material. It has alignment means that aligns and aligns the sheet material in contact, adjusts the width adjustment value for the alignment means to contact the sheet material for each size of the sheet material, and the length in the direction orthogonal to the conveying direction is substantially the same A sheet material aligning apparatus capable of simultaneously aligning and aligning a plurality of types of sheet materials having different sizes on the stacking means, and performing alignment processing for the entire sheet material mixedly loaded on the stacking means by one width adjustment value. Since one width adjustment value is adopted for the entire mixed sheet material, the width of the aligning means can be appropriately adjusted even when sheet materials having different sizes are mixed.

  The invention according to claim 2 is the sheet material aligning device according to claim 1, wherein sheet materials having different sizes are mixedly loaded among the width adjustment values set for the sizes of the sheet materials stacked on the stacking means. The largest width adjustment value corresponding to the mixed sheet material is adopted by performing the alignment processing of the entire sheet material mixed and loaded on the stacking means with the largest width adjustment value among the width adjustment values of the plurality of sizes. Even when sheet materials of different sizes are mixedly loaded, the width of the aligning means can be adjusted appropriately.

  According to a third aspect of the present invention, there is provided the sheet material aligning apparatus according to the first aspect, wherein the width adjustment value set for each size of the sheet material stacked on the stacking unit is the first sheet material stacked. Using the width adjustment value, the width adjustment value of the size of the first loaded sheet material corresponding to the mixed sheet material is adopted by performing alignment processing of the entire sheet material mixedly loaded on the stacking means, and the mixed loading is performed. The width adjustment value of the sheet material can be easily determined.

  The invention described in claim 4 is a sheet post-processing apparatus having the sheet material aligning apparatus according to any one of claims 1 to 3, wherein one width adjustment is performed for the entire mixed sheet material. Even when sheet materials having different sizes and different width adjustment values are mixedly loaded, the width can be adjusted appropriately and the sheet bundle can be easily processed.

  According to a fifth aspect of the present invention, there is provided the sheet post-processing apparatus according to the fourth aspect, wherein a binding process is performed on the stacked sheet material after performing alignment processing on the stacking means of the sheet material aligning device. Adopting one width adjustment value for the entire mixed sheet material, even when sheet materials with different width adjustment values are mixed, the width of the aligning means can be adjusted appropriately, and high-quality binding in the binding process Can be realized.

  According to the present invention, even when sheet materials having different sizes of width adjustment values are mixedly loaded, the width can be adjusted appropriately by the aligning means, and high-quality binding processing can be realized on the sheet bundle. Play.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a schematic configuration of a conveyance unit of a sheet post-processing apparatus according to the first embodiment of the present invention. As shown in FIG. 1, the sheet post-processing apparatus 1 includes a conveyance guide plate 201, an opening / closing guide plate 202, and a paper discharge guide plate 203, and a conveyance path 204 is provided by each guide plate 201, 202, 203. It has been.

  Further, a carry-in entrance 205 is opened in the uppermost stream of the carry path 204 by a carry guide plate 201 and an opening / closing guide plate 202, and an entrance sensor 206 for detecting the position of the sheet is provided immediately after the carry-in entrance 205. A conveyance roller pair 207 is provided in the vicinity of the sensor 206 and downstream. Further, a paper discharge roller pair 208 is provided downstream of the conveyance path 204, and a paper discharge sensor 209 is provided in the vicinity upstream of the paper discharge roller pair 208.

  As shown in FIG. 2, the driving rollers 207 a and 208 a of the transport roller pair 207 and the discharge roller pair 208 are connected to a stepping motor 212 via a pulley 210 and a timing belt 211. The conveyance and discharge roller pairs 207 and 208 are rotated by the rotational drive.

  As shown in FIGS. 3A and 3B, the drive side roller 208 a of the paper discharge roller pair 208 is provided with a swing arm 213 so as to be rotatable coaxially, and the swing arm 213 is elastic. A hitting roller 214 made of a friction member (sponge) is provided. The hitting roller 214 is connected to a pulley 220 fixed on the shaft of the driving roller 208a via a timing belt 215, a pulley 216, a shaft 217, a pulley 218, and a timing belt 219, and is rotated by the rotation of the driving roller 208a. The hitting roller 214 is configured to rotate in the same direction.

  The swing arm 213 is always loaded in the direction of the staple tray 401 (see FIG. 1) by its own weight or a spring (not shown), and by the lever 221 loaded in the opposite direction. It is held at a position where it abuts against a stopper (not shown). As the lever 221 reciprocates, the swing arm 213 rotates in the direction of the staple tray 401 and the tapping roller 214 contacts the staple tray 401, and further rotates and abuts against a stopper (not shown). Stopped.

  As shown in FIG. 4, the reciprocating rotation of the lever 221 is driven by a DC / SOL (solenoid) 223 connected to the lever 221. Alternatively, as shown in FIG. 5, the cam 226 connected via the timing belt 225 is rotated by the rotational drive of the stepping motor 224, and the cam protrusion 226a inserted in the link portion 227 of the lever arm 221a is rotated. Driven.

  Further, as shown in FIG. 6, a gear 228 is fitted on the shaft of the driving roller 208a of the paper discharge roller pair 208, and a holder 229 is rotatably provided on the shaft of the driving roller 208a. Yes. The holder 229 is provided with a return roller 230 made of an elastic friction member (sponge), and is connected to the gear 228 via an intermediate gear 231. As a result, the rotation of the driving roller 208a is transmitted to the return roller 230. The holder 229 is always loaded in the direction of the staple tray 401 (see FIG. 1) by its own weight and the weight of the return roller 230, and the outer periphery of the return roller 230 is always in contact with the staple tray 401. And rotate.

  Next, the configuration of the sheet aligning unit that performs the sheet material aligning process in the sheet post-processing apparatus will be described. As shown in a schematic configuration in FIG. 7, jogger fences 402 and 403 are provided on the staple tray 401, and the jogger fences 402 and 403 are inserted into guide shafts 404 and 405 fixed to the staple tray 401. Yes. Furthermore, the jogger fences 402 and 403 are connected to stepping motors 406 and 407 via timing belts (not shown), and perform linear reciprocation by forward and reverse rotation driving of the stepping motors 406 and 407. The staple tray 401 is provided with home sensors 408 and 409 for detecting the standby positions of the jogger fences 402 and 403. The staple tray 401 is provided with reference fences 410 and 411.

  FIG. 8 is a diagram showing the operation timing of each part from sheet carry-in to alignment in the sheet material alignment processing of the sheet post-processing apparatus. The operation of each part will be described based on FIG. 8 with reference to FIGS.

  When the length of the sheet discharged in the image forming apparatus is small (B5 horizontal / A4 horizontal), the sheet enters the carry-in entrance 205 of the sheet post-processing apparatus 1, and the entrance sensor 206 detects the leading edge of the sheet. Then, after a certain amount of conveyance (after conveyance of 20 mm), the stepping motor 212 is accelerated, and the sheet is accelerated from the acceptance linear speed (138 mm / s) to 500 mm / s and conveyed. When the length of the sheet in the conveyance direction is a large size (other than the above), the sheet is accelerated and conveyed after a certain amount of conveyance after the trailing edge of the sheet passes through a paper discharge sensor (not shown) of the image forming apparatus.

  The sheet that is accelerated and conveyed in the conveyance path 204 is conveyed by a certain amount after the sheet trailing edge passes through the inlet sensor 206 (position where the sheet trailing edge reaches 30 mm upstream of the discharge roller pair 208), and then the stepping motor 212. The sheet is decelerated and conveyed by this deceleration, and is decelerated to 200 mm / s for the small size and 300 mm / s for the large size, and the sheet is discharged onto the staple tray 401 by the discharge roller pair 208 at the linear speed. The

  After the sheet trailing edge passes through the inlet sensor 206 and is conveyed by a certain amount and passes through the sheet discharge roller pair 208 (after the sheet trailing edge has passed through the sheet discharge roller pair 208 and conveyed about 5 mm), DC / SOL 223 or stepping By driving the motor 224, the lever 221 starts to rotate, the swing arm 213 rotates in the direction of the staple tray 401, and the hitting roller 214 comes into contact with the vicinity of the rear end of the sheet discharged onto the staple tray 401, and hits. As the roller 214 rotates, the rear end of the sheet is conveyed so as to contact the reference fences 410 and 411. Further, the sheet whose rear end is brought into contact with the reference fences 410 and 411 by the hitting roller 214 is further conveyed in the direction of the reference fences 410 and 411 by the rotation of the return roller 230, and the posture is maintained.

  The operation timing in FIG. 8 is for the shift mode, and FIG. 9 shows the operation timing in the stipple mode.

  FIGS. 10A to 10I and FIGS. 11A to 11J are diagrams illustrating the sheet aligning operation of the jogger fence in the staple tray. Simultaneously with receiving the sheet discharge signal from the image forming apparatus, the jogger fences 402 and 403 move from the home position to the receiving position depending on the size of the loaded sheet in the width direction. At this time, the jogger fences 402 and 403 are moved to the position of the sheet width +15 mm in the shift mode (FIG. 10A) and to the position of the sheet width +7 mm in the stipple mode (FIG. 11A). Then stop and enter the receiving position.

  In the shift mode, the trailing edge of the sheet passes through the pair of discharge rollers 208 (FIG. 10B), and comes into contact with the reference fences 410 and 411 by the hitting roller 214 and the return roller 230 (FIG. 10C). ), The close side jogger fence 403 moves in the direction of the 30 mm reference side jogger fence 402, the sheet side end contacts and aligns with the reference side jogger fence 402 (FIG. 10D), and the close side jogger fence 403 is again 30 mm. Retract and stop at the receiving position to wait for the discharge of the next sheet (FIG. 10 (f)), and the same operation is sequentially repeated for the discharged sheets to align the sheet bundle with the reference side jogger fence 402.

  Further, after aligning a predetermined number of sheets, the side jogger fence is moved backward by 2 mm, and a sheet bundle is discharged to the discharge tray 301 by the operation of a discharge claw 430 described later (FIG. 10E), the next sheet is By performing the switching operation of the jogger fences 402 and 403 by switching the reference side and the reference side, the shifting operation is performed in the direction opposite to the immediately preceding sheet bundle (FIGS. 10G and 10H). By repeating this a predetermined number of copies, the sheet bundle is shifted and stacked on the paper discharge tray 301. At the end of the process, the jogger fences 402 and 403 are returned to the home position (FIG. 10 (i)). Further, the operation timings of the jogger fences 402 and 403 are all controlled by time management from the detection of the passage of the trailing edge of the entrance sensor 206.

  In the stipple mode, the trailing edge of the sheet passes through the discharge roller pair 208, and the tapping roller 214 starts rotating. At the same time, the jogger fences 402 and 403 move forward by 5 mm and stop at the position of the sheet width +2 mm. (FIG. 11B). Further, the rear end of the sheet abuts against the reference fences 410 and 411 (FIG. 11 (c)) and simultaneously advances 2.5 mm, aligns the sheet to the center (FIG. 11 (d)), and moves back to the receiving position again. It stops (FIG. 11 (e)), waits for the next sheet to be discharged, and repeats the above operations sequentially for the discharged sheets (FIG. 11 (f)), aligning the sheet bundle to the center.

  When the predetermined number of alignment operations are completed, the binding device 450 (see FIG. 1) performs binding processing (stipple) at a predetermined position near the rear end of the sheet bundle (FIG. 11G), and the discharge claw 430 discharges paper. It is discharged onto the tray 301 (FIG. 11 (h)). Waiting for the next sheet to be discharged for the next binding process (FIG. 11 (i)), the jogger fences 402 and 403 are returned to the home position at the end of the process (FIG. 11 (j)). The operation timings of the jogger fences 402 and 403 are all controlled by time management from the detection of the passage of the trailing edge of the entrance sensor 206.

  12 to 14 are diagrams showing a schematic configuration of a sheet discharge tray portion of the sheet post-processing apparatus. The operation of the paper discharge tray will be described with reference to FIGS.

  As shown in the figure, the paper discharge tray 301 is fixed to support members 302 and 303, and the support members 302 and 303 are connected to a drive shaft 306 via timing belts 304 and 305 and a pulley 307. Further, a gear 308 is fitted to the drive shaft 306 and is connected to the DC motor 309 via the gear 308. The discharge tray 301 is moved up and down by the rotation of the DC motor 309.

  An end fence 310 is provided substantially vertically at the end of the paper discharge tray 301, and a rotary shaft 312 fitted with a lever 313 is rotatably attached to the end fence 310. Two sheet pressing members 311 are rotatably inserted in the vicinity. Further, the sheet pressing member 311 is provided with a spring (not shown) that pressurizes the front end portion toward the end fence 310.

  Further, a DC / SOL 315 is fixed near one end of the rotating shaft 312, and the rotating shaft 312 reciprocates at a constant angle by the operation of the DC / SOL 315, whereby the lever 313 rotates and the sheet presser is rotated. The member 311 is rotated. The end fence 310 is provided with a seat height detection sensor 314.

  The sheet pressing member 311 is normally stopped at a position where the leading end pressing portion 311 a protrudes from the sheet alignment surface of the end fence 310 by a pressure spring, and the leading end pressing portion 311 a of the end fence 310 is pulled by the suction operation of the DC / SOL 315. It rotates to the position where it is completely buried from the sheet alignment surface.

  The detection of the stacked sheet height of the sheet discharge tray 301 is performed by pushing the leading edge pressing portion 311a of the sheet pressing member 311 protruding from the end fence 310 by the upper surface of the sheets stacked when the sheet discharge tray 301 is raised. The sheet height detection sensor 314 detects the detection unit provided in a part of the sheet.

  FIGS. 15A to 15H and FIGS. 16A to 16H are views showing the operation of the paper discharge tray section during sheet discharge. When the sheet is discharged to the sheet aligning portion by the discharge roller pair 208, the standby position of the discharge tray 301 is that the discharge tray 301 pushes up the leading end pressing portion 311a of the sheet pressing member 311 and the sheet height detection sensor 314 The detected position or a position raised by a predetermined height from the position, the sheet bundle aligning operation and binding operation are performed at this position (FIGS. 15A and 15H).

  The sheet bundle aligned and shifted by the jogger fences 402 and 403 shown in FIG. 7 is discharged to the paper discharge tray 301 as the discharge claw 430 moves forward.

  At the same time as the release claw 430 moves forward and stops, the DC / SOL 315 (see FIG. 14) sucks and rotates to a position where the sheet pressing member 311 is completely buried from the end fence 310. At the same time as the discharge claw 430 is stopped, the DC motor 309 (see FIG. 12) starts to drive and lowers the discharge tray 301 by a predetermined distance (FIG. 15B), and the sheet bundle is discharged to the discharge tray (301). It is dropped and loaded on top (FIG. 15 (c)).

  Further, at the same time when the discharge tray 301 is stopped after being lowered by a predetermined amount (FIG. 15 (d)), the DC / SOL 315 is turned off and the sheet pressing member 311 protrudes again from the end fence 310 (FIG. 15 (e)). Then, the sheet discharge tray 301 rises again (FIG. 15 (f)), and the upper surface of the sheet bundle stacked on the sheet discharge tray 301 pushes up the sheet pressing member 311 so that the sheet height detection sensor 314 detects it. (Fig. 15 (g)) or stop after a predetermined height is detected, and the vicinity of the rear end of the sheet bundle is pressed by the front end pressing portion 311a of the sheet pressing member 311 to discharge the next sheet. Provided (FIG. 15 (h)).

  Alternatively, at the same time as the discharge claw 430 moves forward and stops (FIG. 16B), the DC motor 309 shown in FIG. 12 starts to drive, lowers the discharge tray 301 by a predetermined distance, and puts the sheet bundle onto the discharge tray 301. At the same time as the paper tray 301 is stopped after being lowered by a predetermined amount, the DC / SOL 315 (see FIG. 14) sucks and the sheet pressing member 311 is completely buried from the end fence 310. Immediately after that, the DC / SOL 315 is turned off and the sheet pressing member 311 protrudes from the end fence 310 again (FIG. 16 (e)), and the discharge tray 301 is raised again. (FIG. 16F), the upper surface of the sheet bundle stacked on the sheet discharge tray 301 pushes up the sheet pressing member 311 and stops at a position detected by the sheet height detection sensor 314. (FIG. 16 (g)), or stop after rising to a predetermined height after detection, and press the vicinity of the rear end of the sheet bundle with the front end pressing portion 311a of the sheet pressing member 311 to prepare for the next sheet discharge (FIG. 16 (h)).

  FIG. 17 is a block diagram showing a system configuration of a control system related to sheet material alignment of the sheet post-processing apparatus. The operation will be described with reference to FIG.

  In the control unit 600 that performs the sheet material alignment process illustrated in FIG. 17, a RAM 603 and a ROM 604 are connected to the CPU 601 via a bus 602. The CPU 601 reads the control program from the ROM 604 and executes it. The RAM 603 holds temporary data necessary for control. Further, the CPU 601 is connected to the home sensor 408 of the front jogger and the drive motor driver 606 of the front jogger in order to control the jogger fence 402 shown in FIG. 7 via the IO port 605. The position of the jogger fence 402 is grasped by an input from the home sensor 408, and the jogger fence 402 is moved by rotating the stepping motor 406 by a signal output to the drive motor driver 606.

  Similarly, a home sensor 409 and a drive motor driver 607 are connected to control the jogger fence 403, and the jogger fence 403 is moved in the same manner as the jogger fence 402. The CPU 601 is connected to a host apparatus 611 that is an image forming apparatus via a serial bus 610.

  FIG. 18 is a control flowchart in the case of performing binding in a sheet material aligning process of the sheet post-processing apparatus according to the second embodiment of the present invention by mixing and aligning sheets of a plurality of sizes by the operation in the staple mode.

  Based on the flowchart shown in FIG. 18, a process for binding and aligning sheets of a plurality of sizes will be described with reference to FIG. 17.

  When a series of processing is started, adjustment data (width adjustment value) for each sheet size is received from the host device 611. For example, the information is “A3: 1.0 mm” and “A4 width: −0.5 mm”. This adjustment data is stored in the RAM 603 as a pair with the sheet size (S1). When an activation request is received from the host device 611 (S2), the driving of the transporting stepping motor 212 (see FIG. 2) is started (S3).

  Next, the sheet size discharged from the host apparatus 611 is received (S4). For example, it is assumed here that “A3” has been received. When the sheet discharge signal is received, processing for determining the movement positions of the front and back jogger fences 402 and 403 (see FIG. 7) is performed (S5).

  First, it is determined whether or not the next sheet material to be received is the first sheet (S6). If it is the first sheet (Yes in step S6), the sheet width corresponding to the sheet size and the width adjustment value are determined (S7). For example, when the sheet size received in step S4 is “A3”, “sheet width: 297.0 mm” and “width adjustment value: 1.0 mm” are obtained.

  The sheet width determined in the processing S7 and the receiving position corresponding to the width adjustment value (in the case of “A3”, as described above, the sheet width (297.0 mm) + width adjustment value (1.0 mm) + stipple mode) The jogger fences 402 and 403 are moved to (a position where the width becomes 7 mm), and the sheet material is received (S8).

  The alignment operation described above is performed to align the sheet material (S9). It is determined whether or not an end instruction has been received from the host apparatus 611 (S10). If no end instruction has been received (No in process S10), the process returns to process S4.

  In process S <b> 4 again, the next discharged sheet size is received from the host apparatus 611. For example, it is assumed that “A4 horizontal” is received here. Thereafter, after receiving the sheet discharge signal and performing the process S5 for determining the movement position of the corresponding jogger fence 402, 403, it is determined whether or not it is the first sheet in the process S6. Since there is no change (No in process S6), it is determined whether or not the sheet size has been changed (S11). If there is no change (No in process S11), the process proceeds to process S8 as in the first sheet.

  However, in this example, the size of the sheet material matched last time is “A3”, and the next received sheet size is changed to “A4 landscape” (Yes in process S11), so the current width adjustment value and the next The width adjustment values of the sheet sizes are compared (S12).

  The current width adjustment value is “1.0 mm” corresponding to “A3”, the width adjustment value of the next sheet size is “−0.5 mm” corresponding to “A4 width”, and the current width adjustment value Therefore, the width adjustment value is not changed (No in step S12), and the process proceeds to step S8.

  In process S12, when the width adjustment value of the next sheet size is larger (Yes in process S12), after changing the width adjustment value (S13), the process proceeds to process S8.

  As described above, when the jogger fences 402 and 403 are moved to the receiving position in step S8, the largest one of the width adjustment values corresponding to the mixed sheet size is used.

  In processing S10, when it is determined that the alignment for all the sheet materials has been completed and an end instruction has been received (Yes in processing S10), the binding operation by the binding device 450 shown in FIG. 1 is performed (S14), and the bound sheet bundle is processed. The sheet is discharged to the sheet discharge tray (S15), and the series of operations is finished.

  Based on the above, one width adjustment value (the largest width adjustment value among the sizes of mixed sheet materials) is adopted for the entire mixed sheet material, and sheet materials of different sizes are mixedly loaded. Even in such a case, the width of the alignment means can be adjusted appropriately.

  FIG. 19 is a control flowchart in the case where the sheet material aligning process of the sheet post-processing apparatus according to the third embodiment of the present invention performs binding by combining and aligning sheets of a plurality of sizes by the operation in the staple mode.

  In the control flowchart shown in FIG. 19 of the third embodiment, the processes S1 to S5 and the processes S7 to S10, S14, and S15 of the control flowchart shown in FIG. 18 of the second embodiment are the same. The difference from the second embodiment is that after the process S5, it is determined whether or not the next sheet material to be received is the first sheet (S16). If it is not the first sheet (No in the process S16), the process S11 in FIG. The sheet width and the width adjustment value in S13 are not changed, and the process proceeds to the process S8 as it is.

  As described above, among the width adjustment values corresponding to the mixed sheet material, the width adjustment value corresponding to the size of the first loaded sheet material is adopted, so the width adjustment value of the mixed sheet material is easily determined. it can.

  In the embodiment described above, the maximum width adjustment value or the width adjustment value of the sheet material received first is the width adjustment value of the mixed sheet bundle. However, the width adjustment for each stacked sheet size is used. It is obvious that a similar effect can be obtained even if a value calculated from the value group, for example, an average value or a weighted average value with the number of stacked sheets as a weight is used as the width adjustment value of the entire sheet bundle mixedly loaded. .

  The sheet material aligning apparatus and the sheet post-processing apparatus according to the present invention can appropriately adjust the width by the aligning means even when sheet materials having different sizes of the width adjustment value are mixedly loaded, and furthermore, the sheet bundle has high quality. The binding process can be realized, and is useful as an alignment process for aligning the conveyed sheet materials.

The figure which shows schematic structure of the conveyance part of the sheet | seat post-processing apparatus in Embodiment 1 of this invention. Diagram showing the drive system for the transport and discharge roller pair (A) of the hitting roller and the swing arm is a front view, and (b) is a perspective view showing the back side. A perspective view showing a mechanism for reciprocally driving a swing arm. A perspective view showing another mechanism for reciprocatingly driving the swing arm. Perspective view showing the configuration of the return roller A perspective view showing a configuration of a sheet aligning unit Diagram showing operation timing in shift mode The figure which shows the operation timing at the time of stipple mode The figure which shows the sheet alignment operation | movement (a)-(i) of the jogger fence in the staple tray at the time of shift mode. The figure which shows the sheet alignment operation | movement (a)-(j) of the jogger fence in a stipple tray at the time of a stipple mode. The perspective view which shows schematic structure of the surface side of a paper discharge tray part The perspective view which shows schematic structure of the back side of a paper discharge tray part The perspective view which shows schematic structure of the sheet | seat pressing member of a paper discharge tray part. The figure which shows operation | movement (a)-(h) of the paper discharge tray part at the time of sheet | seat discharge The figure which shows other operation | movement (a)-(h) of the paper discharge tray part at the time of sheet discharge Block diagram showing a system configuration of a control system related to sheet material alignment of a sheet post-processing apparatus Control flow chart in the case of performing binding by aligning and aligning sheets of a plurality of sizes by the operation in the stipple mode in the second embodiment of the present invention. Control flow chart in the case of performing binding by aligning and aligning sheets of a plurality of sizes by the operation of the stipple mode in the third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet post-processing apparatus 201 Conveyance guide plate 202 Opening / closing guide plate 203 Discharge guide plate 204 Conveyance path 205 Carry-in entrance 206 Entrance sensor 207 Conveyance roller pair 207a, 208a Driving roller 208 Discharge roller pair 209 Discharge sensors 210, 216 218, 220, 307 Pulley 211, 215, 219, 225, 304, 305 Timing belt 212, 224, 406, 407 Stepping motor 213 Swing arm 214 Strike roller 217 Shaft 221, 313 Lever 221a Lever arm 223, 315 DC / SOL
226 Cam 226a Cam projection portion 227 Link portion 228, 308 Gear 229 Holder 230 Return roller 231 Intermediate gear 301 Paper discharge tray 302, 303 Support member 306 Drive shaft 309 DC motor 310 End fence 311 Sheet pressing member 311a Tip pressing portion 312 Rotating shaft 314 Sheet height detection sensor 401 Stipple tray 402, 403 Jogger fence 404, 405 Guide shaft 408, 409 Home sensor 410, 411 Reference fence 430 Release claw 450 Binding device 600 Control unit 601 CPU
602 bus 603 RAM
604 ROM
605 IO port 606, 607 Drive motor driver 610 Serial bus 611 Host device

Claims (5)

Stacking means for stacking the conveyed sheet material, and aligning means for aligning and aligning the sheet material in contact with both ends parallel to the transport direction of the stacked sheet material, For each size, the adjustment means adjusts the width adjustment value for contacting the sheet material, and the length in the direction orthogonal to the conveying direction is substantially the same, and a plurality of types of sheet materials of different sizes are mixed and loaded simultaneously on the stacking means. Sheet material aligning device that can be aligned,
A sheet material aligning apparatus, wherein alignment processing of the entire sheet material mixedly loaded on the stacking means is performed by one width adjustment value.   Among the width adjustment values set according to the size of the sheet material stacked on the stacking means, the maximum width adjustment value among the width adjustment values of a plurality of sizes in which sheet materials having different sizes are mixedly mounted on the stacking means. 2. The sheet material aligning apparatus according to claim 1, wherein the entire sheet material is aligned.   Of the width adjustment values set for each size of the sheet material stacked on the stacking means, the width adjustment value for the sheet material loaded first is used to perform alignment processing for the entire sheet material mixedly loaded on the stacking means. The sheet material aligning apparatus according to claim 1, wherein:   A sheet post-processing apparatus comprising the sheet material aligning apparatus according to claim 1.   5. The sheet post-processing apparatus according to claim 4, wherein the sheet post-processing apparatus performs a binding process on the stacked sheet material after being aligned with the stacking means of the sheet material aligning apparatus.

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