US20140291922A1 - Sheet processing apparatus - Google Patents

Sheet processing apparatus Download PDF

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Publication number
US20140291922A1
US20140291922A1 US14/225,288 US201414225288A US2014291922A1 US 20140291922 A1 US20140291922 A1 US 20140291922A1 US 201414225288 A US201414225288 A US 201414225288A US 2014291922 A1 US2014291922 A1 US 2014291922A1
Authority
US
United States
Prior art keywords
sheet
processing
supporting member
tray
sheets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/225,288
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English (en)
Inventor
Mikio Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba TEC Corp
Original Assignee
Toshiba Corp
Toshiba TEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba TEC Corp filed Critical Toshiba Corp
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA reassignment TOSHIBA TEC KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMAMOTO, MIKIO
Publication of US20140291922A1 publication Critical patent/US20140291922A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/34—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from supports slid from under the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3081—Arrangements for removing completed piles by acting on edge of the pile for moving it along a surface, e.g. by pushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/34—Apparatus for squaring-up piled articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4213—Forming a pile of a limited number of articles, e.g. buffering, forming bundles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1114—Paddle wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/24—Post -processing devices
    • B65H2801/27—Devices located downstream of office-type machines

Definitions

  • Embodiments described herein relate generally to a sheet processing apparatus and an image forming apparatus having the same.
  • a sheet processing apparatus is generally attached to an image forming apparatus and carries out a processing of a sheet conveyed from the image forming apparatus.
  • One type of the sheet processing apparatus performs predetermined post-processing such as sorting and stapling of one or more sheets.
  • predetermined post-processing such as sorting and stapling of one or more sheets.
  • FIG. 1 is a block diagram of a sheet processing apparatus according to a first embodiment.
  • FIG. 2 is a cross-sectional view of the sheet processing apparatus according to the first embodiment.
  • FIG. 3 is a perspective view of a processing tray of the sheet processing apparatus at a first position.
  • FIG. 4 is a perspective view of the processing tray at a second position.
  • FIG. 5 is a cross-sectional view of a paddle in the sheet processing apparatus.
  • FIG. 6 is a perspective view of the paddle shown in FIG. 5 .
  • FIGS. 7-15 each are a cross-sectional view of the sheet processing apparatus carrying out a processing of sheets.
  • FIG. 16 is a perspective view of a processing tray of the sheet processing apparatus according to a second embodiment.
  • FIGS. 17A and 17B each are a perspective view of the processing tray according to a modified embodiment.
  • a sheet processing apparatus includes a sheet tray, a processing unit configured to process one or more sheets that are placed on the sheet tray, a supporting member that is movable into and out of a conveying path of a sheet to be placed on the sheet tray, and a driving unit configured to move the supporting member into and out of the conveying path of the sheet.
  • the supporting member includes a sheet support section that supports the sheet when the supporting member is moved into the conveying path.
  • FIG. 1 is a block diagram of a sheet processing apparatus 200 according to a first embodiment.
  • the sheet processor 200 includes a controller 210 , a sensor 230 , and a driving unit 235 . Each unit of the sheet processor 200 is mutually connected through a bus 300 .
  • the controller 210 includes a processor 212 formed by a Central Processing Unit (CPU) or a Micro Processing Unit (MPU), a memory 214 , and a storing device 220 .
  • the memory 214 is, for example, a semiconductor memory, and includes a Read Only Memory (ROM) 216 for storing various control programs and a Random Access Memory (RAM) 218 for providing a temporary working space to the processor 212 .
  • the storing device 220 is, for example, a hard disk drive and the other semiconductor storing device such as a magnetic storing device, an optical storing device, or a flash memory, or it may be a combination thereof.
  • the controller 210 communicates with a main controller 110 of an image forming device 100 .
  • the controller 210 controls the sheet processor 200 , based on the information received from the main controller 110 or various programs stored in the ROM 216 or the storing device 220 .
  • the sensor 230 transmits inputs from respective sensors to the controller 210 .
  • the driving unit 235 controls respectively corresponding driving mechanisms depending on an instruction from the controller 210 .
  • FIG. 2 is a cross-sectional view of the sheet processing apparatus 200 .
  • the sheet processing apparatus 200 performs the post-processing such as stapling and sorting on a sheet.
  • the sheet processing apparatus 200 includes an inlet roller pair 240 , a branching unit 242 , a first sheet discharge roller pair 244 , and a fixed tray 248 , each being positioned along a sheet conveying direction.
  • the sheet processing apparatus 200 further includes an outlet roller pair 246 , a processing tray 250 , a paddle (revolving unit) 270 , a stapler 280 , and a sheet discharge tray 290 , each positioned downstream in the sheet conveying direction with respect to the branching unit 242 .
  • the inlet roller pair 240 receives a sheet on which an image is formed by an image forming unit of the image forming device 100 , and conveys the sheet to the branching unit 242 .
  • the branching unit 242 guides the sheet to the first sheet discharge roller pair 244 or the outlet roller pair 246 , according to an instruction of the controller 210 based on the type of the processing on the input sheet.
  • the first sheet discharge roller pair 244 discharges a sheet to the fixed tray 248 .
  • the fixed tray 248 stores a sheet on which an image is formed by, for example, a copy function of the image forming device 100 .
  • the outlet roller pair 246 conveys a sheet towards the processing tray 250 .
  • the paddle 270 guides a sheet buffered on a supporting member to the processing tray 250 .
  • the processing tray 250 receives sheets conveyed from the outlet roller pair 246 .
  • the sheets received by the processing tray 250 are, for example, sorted and stapled.
  • the stapling process is performed by a stapler 280 provided upstream in the sheet conveying direction of the processing tray 250 (hereinafter, referred to as upstream), at a predetermined position of the sheets.
  • the processed sheets are discharged to the sheet discharge tray 290 .
  • the sheet discharge tray 290 stores the sheets discharged from the processing tray 250 .
  • the sheet discharge tray 290 in this embodiment is a movable tray which moves vertically depending on a sheet discharge from the processing tray 250 or the loaded amount of sheets.
  • the sheet discharge tray 290 moves vertically when, for example, a sheet detection sensor detects the upper surface of a sheet that is discharged in the sheet discharge tray 290 .
  • the fixed tray 248 , the processing tray 250 , and the sheet discharge tray 290 are inclined in a way in which the downstream side thereof in the sheet conveying direction (hereinafter, referred to as downstream) is disposed higher.
  • FIG. 3 is a perspective view of the processing tray 250 in the sheet processing apparatus 200 shown in FIG. 2 .
  • the processing tray 250 includes a pair of lateral alignment plates (lateral alignment mechanism) 252 , a pair of longitudinal alignment rollers 254 , and a pair of rear end stoppers (not shown), in order to align the sheets conveyed from the outlet roller pair 246 .
  • the lateral alignment plates 252 are respectively provided on a sheet supporting surface accepting the sheets in the processing tray 250 at the both ends in a width direction orthogonal to the sheet conveying direction (hereinafter, referred to the width direction).
  • the lateral alignment plates 252 align the sheets in the width direction (lateral alignment) by being moved back and forth in the width direction at the same distance by a driving mechanism.
  • the longitudinal alignment rollers 254 are provided in the middle in the width direction and at the rear end portion in the sheet conveying direction (hereinafter, referred to as the rear end portion) in the processing tray 250 , with a space therebetween.
  • the rear end stoppers protrudes from the rear end portion of the processing tray 250 in a direction upstream thereof.
  • the longitudinal alignment rollers 254 align the sheets in a longitudinal direction by conveying the sheets on the sheet supporting surface of the processing tray 250 upstream in cooperation with second sheet discharge rollers 258 to the point of the rear end stoppers.
  • the processing tray 250 includes a pair of second sheet discharge rollers 258 , ejectors 260 , a belt 262 , and a claw 264 , in order to discharge the sheets to the sheet discharge tray 290 .
  • the second sheet discharge rollers 258 are provided in a front end portion in the sheet conveying direction on the sheet supporting surface (hereinafter, referred to as the front end portion).
  • the second sheet discharge roller 258 of the embodiment includes, for example, four driving rollers.
  • the ejector 260 protrudes upstream in the sheet conveying direction from the middle portion in the rear end of the processing tray 250 .
  • two ejectors 260 are provided between the longitudinal alignment rollers 254 and be driven back and forth in the sheet conveying direction by a driving mechanism.
  • the ejectors 260 convey stapled sheets so as to be caught by the claw 264 .
  • the claw 264 is attached to the belt 262 .
  • the belt 262 is conveyed around a driving roller and a driven roller (not illustrated) provided in the processing tray 250 .
  • the claw 264 moves along the sheet conveying direction, according to the movement of the belt 262 that is caused by the rotation of the driving roller.
  • the claw 264 conveys the sheets passed from the ejectors 260 from the processing tray 250 to the sheet discharge tray 290 , in cooperation with the second sheet discharge rollers 258 .
  • the processing tray 250 further includes a supporting member 266 formed in an L-shape in order to “buffer” (i.e., temporarily support) a sheet.
  • the supporting members 266 are respectively provided on the both sides in the width direction outside the movement range of the lateral alignment plates 252 on the processing tray 250 .
  • the supporting members 266 are connected to the processing tray 250 and driven between a first position and a second position around a connection portion connected to the processing tray 250 as a rotational axis.
  • the driving mechanism is, for example, a motor or a solenoid.
  • the above-described position of the supporting members 266 is only one example. That is, the supporting members 266 may be arranged at any position as long as it does not interrupt the moving of the lateral alignment plates 252 on the processing tray 250 .
  • the first position of the supporting members 266 is in a state where the supporting members 266 are open upwardly (refer to FIG. 3 ).
  • the sheets conveyed by the outlet roller pair 246 are conveyed onto the processing tray 250 without being interrupted by the supporting members 266 .
  • FIG. 4 is a perspective view of the supporting member 266 in the second position.
  • the second position is in a state where the supporting members 266 partially cover the top surface of the processing tray 250 on the inner sides of the lateral alignment plates 252 from the both sides.
  • a sheet conveyed by the outlet roller pair 246 falls down on the supporting members 266 but is not on the processing tray 250 .
  • the sheet falling down on the supporting members 266 slips to the upstream due to the inclination of the processing tray 250 and the own weight of the sheet.
  • the sheet is buffered in a state where the rear end stopped by a paddle 270 (refer to FIG. 10 ). In other words, the sheet is guided by the supporting members 266 to the paddle 270 . Therefore, the supporting members 266 are preferably arranged upstream of the processing tray 250 .
  • the controller 210 controls the supporting members 266 to be in the first position. In other words, when no processing is performed on a sheet on the processing tray 250 , the controller 210 controls the supporting members 266 to be at the first position. On the other hand, when some processing is performed on a sheet on the processing tray 250 , the controller 210 controls the supporting members 266 to be at the second position. In other words, when a sheet is buffered, the supporting members 266 are at the second position.
  • the processing in this case means, for example, longitudinal alignment, lateral alignment, stapling, or sheet discharge processing of the stapled sheets to the sheet discharge tray 290 .
  • the supporting members 266 maybe urged toward one of the first and second positions by an elastic mechanism such as a spring and rotated to the other position by a driving mechanism for driving in one direction.
  • FIG. 5 is a cross-sectional view of a paddle 270 in the sheet processing apparatus 200 shown in FIG. 2 .
  • the paddle 270 pushes a sheet buffered on the supporting members 266 to the processing tray 250 .
  • the paddle 270 rotates around a shaft.
  • the paddle 270 includes a receiving portion 272 , a tapping portion 274 , and a forwarding portion 276 .
  • a plurality of paddles 270 is provided in the width direction of the processing tray 250 .
  • FIG. 6 is a perspective view of the paddles 270 shown in FIGS. 2 and 5 .
  • the paddles 270 further include a rear end chuck 278 .
  • the rear end chuck 278 rotates coaxially with but independently from a receiving portion 272 , a tapping portion 274 , and a forwarding portion 276 .
  • the rear end chuck 278 is provided between the two paddles 270 arranged in the middle in the width direction.
  • the rear end chuck 278 and the receiving portion 272 hold a sheet on the receiving portion 272 by clamping the sheet therebetween. In short, a sheet is held by the two receiving portions 272 arranged in the middle in the width direction and the rear end chuck 278 .
  • the respective members of the paddle 270 perform the following operations.
  • the receiving portion 272 supports the rear end portion of a sheet in a state where the sheet is placed on the supporting members 266 (shown in FIG. 10 ).
  • the tapping portion 274 pushes the sheet downward when the sheet on the supporting members 266 falls down on the processing tray 250 (shown in FIG. 14 ).
  • the forwarding portion 276 helps the sheet falling down on the processing tray 250 conveyed to the rear end stoppers by the longitudinal alignment rollers 254 (shown in FIG. 15 ).
  • a request to execute the post-processing such as stapling on sheets is input, for example, to the image forming device 100 connected with the sheet processor 200 and the request is transferred to the controller 210 of the sheet processor 200 . Then, a sheet on which an image is formed is discharged from the image forming device 100 and received by the inlet roller pair 240 of the sheet processor 200 shown in FIG. 2 .
  • the branching unit 242 discharges the sheet through the first sheet discharge roller pair 244 to the fixed tray 248 .
  • the branching unit 242 guides a first sheet P 1 conveyed from the inlet roller pair 240 to the outlet roller pair 246 .
  • the outlet roller pair 246 conveys the sheet P 1 towards the processing tray 250 .
  • the supporting members 266 are moved by the driving mechanism to the first position as an initial position, and the sheet P 1 falls down on the sheet supporting surface of the processing tray (shown in FIG. 7 ).
  • the controller 210 performs processing for the lateral alignment and the longitudinal alignment on the sheet P 1 placed on the processing tray 250 , according to the lateral alignment plates 252 , the longitudinal alignment rollers 254 , and the second sheet discharge rollers 258 .
  • a second sheet P 2 is conveyed to the processing tray 250 , according to the same operation as the sheet P 1 (shown in FIG. 8 ).
  • the controller 210 performs the stapling processing on a sheet bundle Pa of the sheet P 1 and the sheet P 2 .
  • a third sheet P 3 is conveyed by the outlet roller pair 246 (shown in FIG. 9 ).
  • the supporting members 266 are moved to the second position.
  • the third sheet P 3 is buffered on the supporting members 266 that are moved to the second position.
  • the sheet P 3 is conveyed downstream while the front end portion of the sheet P 3 is sliding on the supporting members 266 .
  • the sheet P 3 slides in the upstream direction due to the inclination of the processing tray 250 and the weight of the sheet itself.
  • the sheet P 3 is buffered in that position (refer to FIG. 10 ).
  • the rear end chuck 278 holds the sheet P 3 .
  • the rear end chuck 278 holds the sheet when a detection sensor detects a sheet being on the supporting members 266 .
  • the controller 210 similarly causes a fourth sheet P 4 to be buffered on the supporting members 266 (refer to FIG. 11 ).
  • the rear end chuck 278 is temporarily released when the sheet P 4 reaches the paddle 270 .
  • the rear end chuck 278 holds a sheet bundle Pb of the two (P 3 and P 4 ) (refer to FIG. 12 ).
  • the sheet bundle Pa is discharged from the processing tray 250 to the sheet discharge tray 290 , according to the operations of the ejector 260 , the claw 264 attached to the belt 262 , the longitudinal alignment rollers 254 , and the second sheet discharge rollers 258 (refer to FIG. 13 ).
  • the controller 210 controls the driving unit 235 to drive the driving mechanism, so as to move the supporting members 266 from the second position to the first position.
  • the supporting members 266 perform the opening operation.
  • the paddles 270 simultaneously rotate to drop the sheet bundle Pb on the processing tray 250 (refer to FIG. 14 ).
  • the sheet bundle Pb on the supporting members 266 drops on the processing tray 250 (refer to FIG. 15 ). Since the sheet discharge operation of the sheet bundle Pb is the same as the operation of the above-mentioned sheet bundle Pa, the description is omitted.
  • a mechanism for buffering a sheet can be downsized. By buffering a sheet following a sheet that is subject to a processing, more time can be secured for the processing. Further, as the sheet conveying time and the post-processing time of a sheet are overlapped, the productivity of the sheet processing apparatus does not need to be compromised. Further, even when the front end portions of the sheet bundle on the processing tray and the sheet bundle buffered on the supporting members are in touch with each other, the buffered sheet bundle is prevented from going out when the sheet bundle on the processing tray is discharged as the rear end chuck holds the buffered sheet bundle.
  • a sheet processor according to the second embodiment is different from the sheet processor 200 according to the first embodiment in that supporting members 266 a are provided on the upper portions of the lateral alignment plates 252 .
  • FIG. 16 is a perspective view of the processing tray 250 according to the second embodiment.
  • the supporting members 266 a according to the embodiment are respectively provided on the upper portions of the lateral alignment plates 252 . Specifically, in accordance with the operation of the lateral alignment plates 252 , the supporting members 266 a are moved in the width direction.
  • the supporting member 266 a is rotatable around a connection portion with the lateral alignment plate 252 as a shaft.
  • the supporting member 266 a is driven by a driving mechanism such as a motor and a solenoid, similarly to the first embodiment.
  • the lateral alignment plates 252 slide in the width direction during the sorting processing.
  • a buffered sheet may drop down during the sliding of the plates 252 . Therefore, it is preferable that the length in the width direction of the supporting member 266 a is formed longer at least than the sliding distance of the lateral alignment plate 252 .
  • the same effect as the first embodiment can be achieved. Further, since the supporting members are integrally formed with the lateral alignment plates, any sheet may be buffered regardless of the size of a sheet.
  • the supporting members that support a sheet are provided above the processing tray, it possible to downsize a mechanism for buffering the sheet. By buffering a sheet that follows a sheet to be processed, more time may be secured for the processing. Further, as the sheet conveying time and the sheet post-processing time are overlapped, the productivity of the sheet processor does not need to be compromised.
  • FIGS. 17A and 17B are a modified example of the supporting member 266 .
  • the supporting member may be formed in a shape of extending in a downstream direction as illustrated in FIGS. 17A and 17B .
  • the operation of the supporting member of this modified example is the same as that of the second embodiment, the description is omitted.
  • the number of the sheets to be buffered is not limited to two as in the above embodiment. It may be properly changed depending on the sheet conveying speed and the processing time.
US14/225,288 2013-03-26 2014-03-25 Sheet processing apparatus Abandoned US20140291922A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-063259 2013-03-26
JP2013063259A JP5927135B2 (ja) 2013-03-26 2013-03-26 シート処理装置

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US20140291922A1 true US20140291922A1 (en) 2014-10-02

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US14/225,288 Abandoned US20140291922A1 (en) 2013-03-26 2014-03-25 Sheet processing apparatus

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JP (1) JP5927135B2 (ja)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
US9703247B2 (en) * 2015-03-13 2017-07-11 Kabushiki Kaisha Toshiba Sheet post-processing apparatus and image forming system
JP2017197317A (ja) * 2016-04-26 2017-11-02 グラドコジャパン株式会社 用紙後処理装置
US10048635B2 (en) 2016-12-28 2018-08-14 Kabushiki Kaisha Toshiba Sheet post-processing apparatus and image forming system
US10996607B2 (en) 2016-09-09 2021-05-04 Hewlett-Packard Development Company, L.P. Printed media stack alignment

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JP7259323B2 (ja) * 2018-12-27 2023-04-18 セイコーエプソン株式会社 媒体積載装置、媒体処理装置及び媒体積載装置の制御方法

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JP3636942B2 (ja) * 1999-07-26 2005-04-06 理想科学工業株式会社 丁合装置
JP4034306B2 (ja) * 2004-09-29 2008-01-16 東芝テック株式会社 シート後処理装置
JP4746946B2 (ja) * 2005-09-15 2011-08-10 東芝テック株式会社 シート処理装置、およびシート処理方法
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US7306215B2 (en) * 2004-09-28 2007-12-11 Toshiba Tec Kabushiki Kaisha Sheet storage apparatus
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9703247B2 (en) * 2015-03-13 2017-07-11 Kabushiki Kaisha Toshiba Sheet post-processing apparatus and image forming system
US10036989B2 (en) 2015-03-13 2018-07-31 Kabushiki Kaisha Toshiba Sheet post-processing apparatus, image forming system and sheet post-processing method
JP2017197317A (ja) * 2016-04-26 2017-11-02 グラドコジャパン株式会社 用紙後処理装置
US10996607B2 (en) 2016-09-09 2021-05-04 Hewlett-Packard Development Company, L.P. Printed media stack alignment
US10048635B2 (en) 2016-12-28 2018-08-14 Kabushiki Kaisha Toshiba Sheet post-processing apparatus and image forming system

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JP5927135B2 (ja) 2016-05-25
JP2014189339A (ja) 2014-10-06

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