EP2136256A1 - Blattfertiger und damit ausgestattetes Bilderzeugungssystem - Google Patents

Blattfertiger und damit ausgestattetes Bilderzeugungssystem Download PDF

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Publication number
EP2136256A1
EP2136256A1 EP09162224A EP09162224A EP2136256A1 EP 2136256 A1 EP2136256 A1 EP 2136256A1 EP 09162224 A EP09162224 A EP 09162224A EP 09162224 A EP09162224 A EP 09162224A EP 2136256 A1 EP2136256 A1 EP 2136256A1
Authority
EP
European Patent Office
Prior art keywords
sheet
image forming
aligning
recording sheet
information
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.)
Granted
Application number
EP09162224A
Other languages
English (en)
French (fr)
Other versions
EP2136256B1 (de
Inventor
Masayuki Watanabe
Eiji Sugimoto
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.)
Konica Minolta Business Technologies Inc
Original Assignee
Konica Minolta Business Technologies Inc
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 Konica Minolta Business Technologies Inc filed Critical Konica Minolta Business Technologies Inc
Publication of EP2136256A1 publication Critical patent/EP2136256A1/de
Application granted granted Critical
Publication of EP2136256B1 publication Critical patent/EP2136256B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6538—Devices for collating sheet copy material, e.g. sorters, control, copies in staples form
    • G03G15/6547—Shifting sets of sheets in the discharge tray
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00886—Sorting or discharging
    • G03G2215/0089—Shifting jobs

Definitions

  • the present invention relates to a sheet finisher that aligns a recording sheet outputted from an image forming apparatus such as a copying machine and a printer, and to an image forming system equipped with the sheet finisher, and in particular, to a sheet finisher capable of aligning efficiently and to an image forming system equipped therewith.
  • An image forming system that is constituted to align a recording sheet on which an image has been formed by an image forming apparatus, in the primary scanning direction by using an aligning unit of a sheet finisher.
  • the recording sheet is pressed by aligning plates from both ends in the primary scanning direction at a recording sheet placing position of the sheet finisher, thereby, a bundle of recording sheets turns out to be in the state wherein they are stacked under the condition where an edge portion of the bundle of recording sheets is aligned.
  • positions in the primary scanning direction of the recording sheets outputted from the image forming apparatus are sometimes caused by various main causes to be different each other. Therefore, aligning plates are caused to be on standby at the position representing a size that is larger than a size of the recording sheet in the primary scanning direction, before the recording sheet is outputted, and then, the recording sheet is pressed by the aligning plates from both ends in the primary scanning direction, immediately after the recording sheet is outputted, for positioning.
  • a central position in the primary scanning direction of a recording sheet outputted from an image forming apparatus is sometimes different depending on a sheet feed tray, and further, a central position of a recording sheet outputted sometimes changes depending on a path through which the recording sheet is conveyed in the image forming apparatus.
  • a position for standing by represents an amount obtained by adding an amount of deviation that may be caused by sheet skewing or the like to a difference between C1 and C2.
  • image forming apparatuses have been improved in terms of speed-up, which requires operations of alignment to be improved in terms of speed-up.
  • speed-up it is necessary to increase a speed of a motor that drive pressing operations of aligning plates.
  • this speed increase is also related to a torque required for alignment, thus, speed-up of aligning operations is difficult. Namely, when a central position of a recording sheet outputted from an image forming apparatus does not agree with a central position with which the alignment is conducted on the sheet finisher side, either one of them is to be selected. Even in that case, it has been necessary to cause the aligning plate to stand by at a position having a margin for standing by so that a recording sheet outputted from an image forming apparatus may not hit an aligning plate.
  • the present invention has been achieved for solving the aforesaid problems, and an objective of the invention is to realize a sheet finisher and an image forming system which may match the high-speed aligning operations.
  • an embodiment of the sheet finisher for solving the aforesaid problems is a sheet finisher that is connected to an image forming apparatus and has an aligning unit that conducts aligning in the primary scanning direction with an aligning plate for a recording sheet sent from the image forming apparatus, wherein there is provided a controller that receives from the image forming apparatus, either one of correction information of image forming position for each sheet feed tray on the image forming apparatus side, and detection information of recording sheet edge, and determines an alignment position by referring to the aforesaid information.
  • An embodiment of the image forming system is an image forming system equipped with an image forming apparatus that forms an image on a recording sheet and with a sheet finisher having an aligning unit that conducts aligning in the primary scanning direction with an aligning plate for a recording sheet fed from the image forming apparatus, wherein the aforesaid sheet finisher is equipped with a controller that receives either one of image forming position correction information for each sheet feed tray on the image forming apparatus side and recording sheet end portion detection information from the image forming apparatus, and determines alignment position by referring to the aforesaid information.
  • the sheet finisher 200 may also be equipped with functions to carry out other sheet finishing such as stapling and punching.
  • the image forming apparatus 100 is connected with the sheet finisher 200 to constitute an image forming system.
  • the image forming apparatus 100 forms an image on a recording sheet, and this recording sheet is sent to the sheet finisher 200 where sheet finishing operations such as alignment and others are carried out.
  • control section 101 is composed of CPU and others for controlling respective parts of the image forming apparatus 100, and has a function to transmit either one of image forming position correction information for each sheet feed tray of sheet feed section 110 and recording sheet end portion detection information to the sheet finisher 200 side.
  • the sheet feed section 110 is equipped with a sheet feed tray on which an unrecorded recording sheet is placed, and the sheet feed section 110 feeds recording sheets to print engine 120.
  • the image forming position correction information for each sheet feed tray of sheet feed section 110 is information concerning positional deviation of a recording sheet for each sheet feed tray controlled so that an image may be formed at a desired position within the recording sheet after dissolving the deviation, because a positional deviation in the primary scanning direction of the recording sheet is caused for each sheet feed tray when the sheet is fed out to the image transfer position from each sheet feed tray.
  • the print engine 120 is one to form a visible image on a recording sheet supplied from the sheet feed section 110, and it carries out image forming on two sides of the recording sheet by using a reversing mechanism, when an occasion demands. Further, it generates recording sheet end portion detection information by unillustrated various types of sensors, and transmits it to control section 101.
  • this print engine 120 may be either one used for a printer and copying machine of an electrophotographic type, or one of each recording mode such as other inkjet, thermographic or heat-transfer type.
  • control section 201 is composed of CPU or the like to control respective portions of the sheet finisher 200, and it receives either one of image forming position correction information for each sheet feed tray in image forming apparatus 100 and recording sheet end portion detection information from image forming apparatus 100 (control section 101) to determine an alignment position by an aligning plate in the case of aligning and a position for standing by, referring to the aforesaid information.
  • Alignment drive portion 210 is composed of a motor to drive aligning plates (see Fig. 2a - 2b ) of aligning unit 220, a motor drive circuit that drives a motor and of a speed-change mechanism, to drive the aligning unit 220 based on instruction of control section 201.
  • the aligning unit 220 conducts aligning in the primary scanning direction for a recording sheet fed from the image forming apparatus, by means of aligning plates 221 and 222 shown in Figs. 2a - 2b .
  • the aligning plates 221 and 222 are waiting at the prescribed positions for standing by until a moment when a recording sheet comes from the image forming apparatus, and then, the aligning plates 221 and 222 conduct aligning, each time a single recording sheet comes.
  • the aligning plates 221 and 222 conduct aligning by pressing both end portions in the primary scanning direction of a recording sheet sent from the image forming apparatus 100 toward the center position from the position of standing by, and by aligning end portions of plural recording sheets in the primary scanning direction.
  • control section 201 initializes respective portions of control section 201 to cause respective portions to conduct necessary initializing operations, and in aligning unit 220, aligning plates 221 and 222 are moved to home positions determined in advance through the alignment drive portion 210 (step S301 in Fig. 3 ).
  • the alignment drive portion 210 may also confirm whether the aligning plates 221 and 222 are moved to prescribed home positions or not, by an unillustrated home position sensor or the like.
  • control section 101 communicates with control section 201. Then, recording sheet size information including size information of the recording sheet in the primary scanning direction and image position correction information that differs from others for each tray to which the recording sheet is fed, are transmitted from control section 101 and are received by control section 201 (step S303 in Fig. 3 ).
  • recording sheet end portion detection information detected by a sensor arranged at any position of conveyance path of image forming apparatus 100 is transmitted from control section 101 to control section 201.
  • control section 201 that received these pieces of information calculates an alignment position and alignment waiting position, by referring to recording sheet size information, image forming position correction information for each sheet feed tray and recording sheet end portion detection information (step S304 in Fig. 3 ).
  • a conveyance path center on the sheet finisher 200 side is represented by C2 as shown in Figs. 2a and 2b .
  • a center of the recording sheet in the case of image forming output is represented by C1, although it is changed depending on each sheet feed tray and on passage of reversing conveyance path.
  • aligning processing has been conducted by aligning plates 221 and 222 in a way that center C1 at image forming output may agree with conveyance path center C2 on the sheet finisher 200 side, as shown in Fig. 2b .
  • a position of standing by for each of aligning plates 221 and 222 has been determined with a margin so that the aligning plate may be within a position that could be changed in terms of a size, because there is a possibility that C1 may be moved by a sheet feed tray itself, passing through a reversing conveyance path and a sheet skewing.
  • the finally aligned position covering (position shown with solid lines in Fig. 2b ) plus about 20 mm has been a position for standing by.
  • control section 201 on the sheet finisher 200 side which has received recording sheet size information and image position correction information determines center C3 in the case of alignment so that it may agree with center C1 at image forming outputting for image forming apparatus 100, in the present embodiment, as shown in Fig. 2a .
  • an alignment position determined by control section 201 is a position determined by a sheet size in the primary scanning direction whose center is center C3 at alignment that is equal to the center C1 at image forming outputting.
  • the a position determined by a sheet size in the primary scanning direction whose center is center C3 at alignment to which the minimum margin (for example, a margin for sheet skewing) of about 5 mm is added may be determined as a position for standing by for alignment.
  • control section 201 moves aligning plates 221 and 222 of aligning unit 220 to the a position for standing by for alignment, through alignment drive section 210 (step S305 in Fig. 3 ).
  • aligning plates 221 and 222 are moved from the position for standing by to the aligning position as shown in Fig. 2a , by an instruction of control section 201 and by driving of the alignment drive section 210, for each of the recording sheet, thus, alignment operations are carried out as sheet aligning processing (step S306 in Fig. 3 ).
  • step S305 and S306 in Fig. 3 standing by and aligning operations of the aligning plates 221 and 222 are repeated (steps S305 and S306 in Fig. 3 ) until the moment when the image forming is terminated (step S 307 in Fig. 3 , NO).
  • control section 201 moves aligning plates 221 and 222 of aligning unit 220 to home positions through alignment drive section 210 (step S308 in Fig. 3 ) to terminate a series of operations.
  • the control section 201 of sheet finisher 200 that referred to the information to determine a position of alignment by aligning plates 221 and 222 (central position, edge portion position) to an appropriate position without requiring useless operations for alignment, by aligning the position of alignment with a central position of a recording sheet outputted from image forming apparatus 100.
  • image forming system 1 including image forming apparatus 100 and sheet finisher 200 in the second embodiment, based on Fig. 4a - Fig. 5 .
  • the structure shown in Fig. 1 is common for the First Embodiment and the Second Embodiment, and overlapped explanations are omitted.
  • the sheet finisher 200 may also be equipped with functions to carry out other sheet finishing such as stapling and punching.
  • control section 201 initializes respective portions and instructs necessary initial operations for each portions, and in aligning unit 220, aligning plates 221 and 222 are moved to home positions determined in advance, through alignment drive portion 210 (step S501 in Fig. 5 ).
  • the alignment drive portion 210 may also confirm whether the aligning plates 221 and 222 are moved to the prescribed home positions or not by an unillustrated home position sensor.
  • control section 101 communicates with control section 201.
  • pieces of information of recording sheet size including size information of the recording sheet in the primacy scanning direction are transmitted from the control section 101 and are received by the control section 201 (step S503 in Fig. 5 ).
  • the control section 201 that has received the aforesaid information calculates a position of alignment by referring to the recording sheet size information coming from the image forming apparatus 100 (step S504 in Fig. 5 ).
  • conveyance path center C2 on the sheet finisher 200 side is used as it is, as central position C3 in the case of alignment.
  • pieces of information of recording sheet size including size information of the recording sheet in the primary scanning direction and image position correction information about a tray from which the recording sheets used most frequently are fed out are transmitted from the control section 101 and are received by the control section 201 (step S503 in Fig. 5 ).
  • the control section 201 that has received the aforesaid information calculates a position of alignment by referring to the recording sheet size information coming from the image forming apparatus 100, or to the recording sheet size information and image position correction information (step S504 in Fig. 5 ).
  • central position C3 in the case of alignment becomes the one that agrees with central position C1 in the case of image forming output for the recording sheets used most frequently, without becoming conveyance path center C2 on the sheet finisher 200 side.
  • control section 101 of image forming apparatus 100 transmits image position correction information that is different for each tray from which the recording sheets are fed, and the control section 201 receives that information (step S505 in Fig. 5 ). Further, when a position of a recording sheet is fluctuated when the recording sheet passes through a reversing conveyance path inside image forming apparatus 100 in the case of duplex copying, recording sheet end portion detection information that is detected by a sensor arranged at any position of a conveyance path in image forming apparatus 100 is sent to control section 201 from control section 101.
  • control section 201 calculates a position of standing by for alignment, referring to image forming position correction information for each sheet feed tray coming from image forming apparatus 100 or to recording sheet end portion detection information (step S506 in Fig. 5 ).
  • control section 201 moves the aligning plates 221 and 222 of aligning unit 220 to the aforesaid position of standing by through alignment drive portion 210 (step S507 in Fig. 5 ).
  • FIG. 4a and 4b shows how the recording sheet with center C1 in image forming output that does not agree with center C2 or C3 in terms of a position is outputted.
  • image forming position correction information or recording sheet end portion detection information is clear for each recording sheet. Therefore, it is possible to take a position for standing by that agrees with a position of the recording sheet in terms of a position, which results in less waste of positions for standing by, compared with a conventional occasion ( Fig. 2b ).
  • Figs. 2b shows how the recording sheet with center C1 in image forming output that does not agree with center C2 or C3 in terms of a position is outputted.
  • image forming position correction information or recording sheet end portion detection information is clear for each recording sheet. Therefore, it is possible to take a position for standing by that agrees with a position of the recording sheet in terms of a position, which results in less waste of positions for standing by, compared with a conventional occasion ( Fig. 2b ).
  • Figs. 2b shows how the
  • C1 agrees with C2 to be the same condition as in Fig. 2a , and wasteful positions for standing by are also eliminated at both sides.
  • aligning plates 221 and 222 are moved to alignment position from a position for standing by through instruction of control section 201 and through drive of alignment drive portion 210 under the conditions shown in Fig. 4a and Fig. 2a , for each recording sheet thus sent, whereby, aligning operations are carried out as sheet aligning processing (step S508 in Fig. 5 ).
  • step S505 - S508 in Fig. 5 standing by and aligning operations for the aligning plates 221 and 222 are repeated (steps S505 - S508 in Fig. 5 ) until the moment when image forming is completed for each recording sheet (step S509 in Fig. 5 , NO).
  • control section 201 moves aligning plates 221 and 222 of aligning unit 220 to home positions, through aligning drive section 210 (step S510 in Fig. 5 ) to terminate a series of operations.
  • control section 201 of the sheet finisher 200 that has referred to the aforesaid information can determine the position for standing by for aligning plates 221 and 222 at an appropriate position without necessity for doing useless aligning operations, by regulating the position for standing by for aligning plates 221 and 222 to prescribed distance from a central position of the recording sheet outputted from the image forming apparatus.
  • control section 201 of the sheet finisher 200 that has referred to the aforesaid information can determine the position for standing by for aligning plates 221 and 222 at an appropriate position without necessity for doing further useless aligning operations, by regulating aligning positions (a central position and an end portion position) by aligning plates 221 and 222 to the central position of a recording sheet outputted from image forming apparatus, and by regulating the position for standing by for aligning plates 221 and 222 to prescribed distance from a central position of the recording sheet outputted from the image forming apparatus.
  • aligning operations explained above may either be carried out independently by an aligning unit, or be carried out as aligning operations to be conducted before performing punching, stapling and bookbinding.
  • FIG. 1 shows a state wherein image forming apparatus 100 is connected directly with sheet finisher 200
  • the state is a part of an embodiment in which the aforesaid aligning operations are performed in either one of sheet finishers in an image forming system having therein a plurality of image forming apparatuses and a plurality of sheet finishers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pile Receivers (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP09162224.1A 2008-06-19 2009-06-09 Blattfertiger und damit ausgestattetes Bilderzeugungssystem Active EP2136256B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008159890A JP5104582B2 (ja) 2008-06-19 2008-06-19 後処理装置および画像形成システム

Publications (2)

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EP2136256A1 true EP2136256A1 (de) 2009-12-23
EP2136256B1 EP2136256B1 (de) 2014-10-01

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EP09162224.1A Active EP2136256B1 (de) 2008-06-19 2009-06-09 Blattfertiger und damit ausgestattetes Bilderzeugungssystem

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US (1) US20090315243A1 (de)
EP (1) EP2136256B1 (de)
JP (1) JP5104582B2 (de)
CN (1) CN101609275A (de)

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JP5774834B2 (ja) * 2010-10-22 2015-09-09 理想科学工業株式会社 用紙整合装置
JP5853400B2 (ja) 2011-04-21 2016-02-09 ソニー株式会社 セパレータおよび非水電解質電池、ならびに電池パック、電子機器、電動車両、蓄電装置および電力システム
CN102807122A (zh) * 2011-06-03 2012-12-05 致伸科技股份有限公司 纸张整列装置
JP5918506B2 (ja) * 2011-11-07 2016-05-18 ニスカ株式会社 シート処理装置及びこれを用いた画像形成装置
JP6037303B2 (ja) * 2012-06-29 2016-12-07 ニスカ株式会社 シート整合装置及びこれを備えた画像形成システム
JP6087606B2 (ja) 2012-12-07 2017-03-01 キヤノン株式会社 シート処理装置、その制御方法、及びプログラム

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JPH11189355A (ja) 1997-12-26 1999-07-13 Fuji Xerox Co Ltd 用紙整合装置およびこれを備えた画像形成装置
JPH11199100A (ja) 1997-11-13 1999-07-27 Fuji Xerox Co Ltd 用紙整合装置
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JP2008159890A (ja) 2006-12-25 2008-07-10 Matsushita Electric Ind Co Ltd マークの位置認識方法および位置認識装置、位置認識プログラム、部品実装装置

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Publication number Priority date Publication date Assignee Title
JPH10181988A (ja) * 1996-12-27 1998-07-07 Canon Inc シート処理装置及びこれを備える画像形成装置
JPH11199100A (ja) 1997-11-13 1999-07-27 Fuji Xerox Co Ltd 用紙整合装置
JPH11189355A (ja) 1997-12-26 1999-07-13 Fuji Xerox Co Ltd 用紙整合装置およびこれを備えた画像形成装置
US20040057744A1 (en) * 2002-07-31 2004-03-25 Katsumi Kawagoe Apparatus, system for forming image, and method for controlling image forming apparatus
JP2008159890A (ja) 2006-12-25 2008-07-10 Matsushita Electric Ind Co Ltd マークの位置認識方法および位置認識装置、位置認識プログラム、部品実装装置

Also Published As

Publication number Publication date
EP2136256B1 (de) 2014-10-01
US20090315243A1 (en) 2009-12-24
CN101609275A (zh) 2009-12-23
JP2010001110A (ja) 2010-01-07
JP5104582B2 (ja) 2012-12-19

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