US20090127775A1 - Image forming system - Google Patents

Image forming system Download PDF

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Publication number
US20090127775A1
US20090127775A1 US12/267,993 US26799308A US2009127775A1 US 20090127775 A1 US20090127775 A1 US 20090127775A1 US 26799308 A US26799308 A US 26799308A US 2009127775 A1 US2009127775 A1 US 2009127775A1
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US
United States
Prior art keywords
sheet
image forming
inverting
interval time
conveying
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
US12/267,993
Other languages
English (en)
Inventor
Hiroyuki Takahashi
Wataru Kawata
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWATA, WATARU, TAKAHASHI, HIROYUKI
Publication of US20090127775A1 publication Critical patent/US20090127775A1/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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/333—Inverting
    • B65H2301/3331—Involving forward reverse transporting means
    • 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
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
    • B65H2301/4452—Regulating space between separated articles
    • B65H2301/44522—Varying space between separated 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • 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

  • the present invention relates to an image forming system in which a sheet post-processing apparatus can be connected to an image forming portion.
  • a subsequent sheet is sequentially fed without waiting for an image formation of a preceding sheet. Accordingly, a plurality of sheets exist in a conveying path. Further, if the preceding sheet is retarded, the subsequent sheet is temporarily stopped following the preceding sheet, in such a manner as to prevent the subsequent sheet from catching up on the preceding sheet.
  • an inverse conveying unit is driven at a constant speed or timing, a conveying speed and a conveying timing of a recording sheet are changed by a change of a conveying performance, and a dispersion is generated in a paper interval so as to be an obstacle in the case of increasing a continuous image forming efficiency.
  • an image forming apparatus structured such that a continuous image is formed always at a constant paper interval, by carrying out a conveying control correcting a change of a conveying performance of an inverse conveying unit which tends to be affected by a change such as an abrasion based on an actuation for a long term (refer to Japanese Patent Application Laid-Open No. 2002-211815).
  • an image forming apparatus structured such that a conveying failure is prevented by defining a distance interval between sheets constant and inverting the sheet, in accordance with a speeding up of the image forming apparatus (refer to Japanese Patent Application Laid-Open No. 2001-240285).
  • Japanese Patent Application Laid-Open No. 2002-311659 sets the sheet interval to which the post-processing apparatus can correspond.
  • the sheet interval set in the structure of Japanese Patent Application Laid-Open No. 2002-311659 is set while having a margin such that the post-processing apparatus can correspond even if a slip between the sheet and the conveying roller is generated within the image forming apparatus. Accordingly, there is a limit for shortening the interval between the sheets within the image forming apparatus so as to improve the productivity.
  • the paper interval time which can execute the post-processing becomes approximately equal to the paper interval time of the image forming apparatus.
  • the paper interval of the image forming apparatus becomes shorter than the paper interval time which the sheet post-processing apparatus can execute the post-processing, at a time when the paper interval is dispersed in the image forming apparatus, whereby the sheet is discharged from the image forming apparatus so as to be sent to the post-processing apparatus, there is a risk that the paper interval can not be corresponded by the sheet post-processing apparatus.
  • a driving unit of an inverse conveying unit is controlled in such a manner as to detect a change of a conveying performance of the inverse conveying unit and achieve a constant conveying performance based on the detection, however, it does not take into consideration a paper interval between a preceding paper under conveying and a subsequent paper.
  • the paper is discharged from the image forming apparatus as it is without taking into consideration a receiving condition of the post-processing apparatus.
  • the paper interval time becomes shorter over the receiving condition of the post-processing apparatus, there is a possibility that the post-processing failure is generated.
  • the sheet post-processing apparatus is not provided by taking into consideration the paper interval time which can be post-processed, for example, if the paper interval time becomes shorter than the paper interval time which the sheet post-processing apparatus can correspond to, there is a risk that the paper interval time can not be corresponded by the sheet post-processing apparatus.
  • a technical feature of the present invention is made by taking the circumstances mentioned above into consideration, and the present invention provides an image forming system which can detect a dispersion in a sheet conveyed within an image forming portion, and can stably carry out an post-processing while securing a high image forming productivity.
  • the image forming system has an image forming portion which forms an image in a sheet, an inverting portion which inverts the sheet in which the image is formed by the image forming portion, a discharging portion which discharges the sheet inverted by the inverting portion, a sheet position detecting portion which detects a position of the sheet in which the image is formed by the image forming portion, a control portion which controls a motion of the inverting portion, and a sheet post-processing apparatus which is connected to the image forming portion and receives the sheet discharged from the discharging portion so as to apply an post-processing, wherein the control portion can change the motion of the inverting portion based on a detected information of the sheet position detecting portion, in such a manner that an interval time of the continuous sheets becomes equal to or more than a sheet interval time which the sheet post-processing apparatus can receive the sheet.
  • the present invention it is possible to adjust the paper interval time of the sheet discharged from the image forming portion in a range that the sheet post-processing apparatus can receive, while securing a high image forming productivity.
  • FIG. 1 is an explanatory view of a sheet conveying path of an image forming system according to an embodiment of the present invention
  • FIG. 2 is a sequence diagram at a time of conveying the sheet in the image forming system in FIG. 1 ;
  • FIG. 3 is a block diagram of a control system of the image forming system in FIG. 1 ;
  • FIG. 4 is a flow chart describing a control of the image forming system in FIG. 1 ;
  • FIG. 5 is a flow chart describing another control of the image forming system in FIG. 1 .
  • FIG. 1 is a view describing a sheet conveying path of one embodiment according to an image forming system of the present invention.
  • FIG. 2 is a sequence diagram at a time of conveying the sheet in the image forming system in FIG. 1 .
  • FIG. 3 is a block diagram of a control system of the image forming system in FIG. 1 .
  • FIG. 4 is a flow chart describing a control of the image forming system in FIG. 1 .
  • an image forming system 1 has an image forming portion 10 and a finisher 100 corresponding to a sheet post-processing apparatus.
  • the image forming portion 10 includes an image reader which reads a document image and is not illustrated and a printer.
  • a document feeding apparatus is mounted to the image reader. The document feeding apparatus feeds the document which is set upward on a document tray, one by one from a leading page through a reading position on a platen glass via a curved path, and discharges to an external discharge tray.
  • a sheet S is sequentially fed out by a sheet feeding roller 12 .
  • the fed sheet S is conveyed to a registration roller 16 which stops its rotating motion by path rollers 13 and 14 .
  • the sheet S conveyed to the registration roller 16 is removed its skew feeding.
  • an image reference sensor 15 is arranged in a downstream side of the path rollers 13 and 14 , and serves as a sheet position detecting portion which detects a position of the fed sheet S.
  • a toner image formed on a photosensitive drum 21 is transferred to the sheet S in a transfer portion 20 in a state of aligning the toner image formed on the photosensitive drum 21 with a position in a conveying direction of the sheet S conveyed from the registration roller 16 , by driving the registration roller 16 at a predetermined timing.
  • the transfer portion 20 is structured such that an endless transferring belt 22 is wound around a drive roller 22 a and a driven roller 22 b, and a corona charger (not illustrated) for transferring is arranged in an approximately opposing portion of the photosensitive drum 21 in an inner side of the transferring belt 22 .
  • the fixing portion 17 fixes a developer image on the sheet S by thermally pressing the sheet S.
  • the sheet S passing through the fixing portion 17 is discharged toward a finisher 100 from a discharge port 27 a corresponding to a discharge portion of the image forming portion 10 via a switching member (a flapper) 18 and a discharge roller 27 .
  • the discharge port 20 a in this case is a portion serving as a sheet delivery portion between the image forming portion 10 and the finisher 100 .
  • the sheet S conveyed by the discharge roller 27 and discharged from the discharge port 27 a is received by a receiving roller 101 of the finisher 100 , and is discharged and stacked to a sheet stack tray 104 by a discharge roller 102 while directing the image forming surface upward.
  • the sheet S discharged form the fixing portion 17 is introduced to an inverting path in which a first inverting roller 19 is arranged, by switching the switching member 18 .
  • a trailing end of the sheet S is conveyed to a predetermined amount downstream position of the fixing portion 17 while being sped up, and a second inverting roller 24 is stopped in such a manner that the sheet trailing end is positioned at a predetermined amount upstream position (an inverting point) of the second inverting roller 24 , after being conveyed at the predetermined amount.
  • the sheet S is conveyed to the discharge roller 27 side by an inverting conveying roller 26 corresponding to a conveying portion by inverting the second inverting roller 24 , and is conveyed to the finisher 100 .
  • a first inverting sensor 23 is arranged in an upstream side of the first inverting roller 19 , and detects a position of the sheet S before being inverted
  • a second inverting sensor 25 is arranged in a downstream side of the second inverting roller 24 , and detects a position of the sheet S after being inverted.
  • the finisher 100 carries out each of processes such as a binding process and the like.
  • the finisher 100 carries out a process of sequentially incorporating the sheet S discharged from the image forming portion 10 , and aligning a plurality of incorporated sheets S so as to pack into one bundle, and a staple process of binding a trailing end of the packed sheet bundle by a staple 103 .
  • the sheet bundle is bound by the staple 103 and is discharged and stacked to the sheet stack tray 105 , after finishing an post-processing of aligning the trailing end and a width direction of the sheet S.
  • the first and second inverting rollers 19 and 24 are respectively driven by first and second drivers 19 a and 24 a, as illustrated in FIG. 3 . Further, the first and second drivers 19 a and 24 a are controlled by a control portion 30 .
  • the control portion 30 has a computing portion 31 , and driving timings and sheet conveying speeds of the first and second inverting rollers 19 and 24 are calculated based on detected information of the first and second inverting sensors 23 and 25 and the image reference sensor 15 .
  • a nominal paper interval time of the image forming portion 10 is set to A (ms) (refer to FIG. 4 ).
  • Reference symbol A denotes a standard operate value calculated based on a productivity of the image forming system 1 .
  • the paper interval time between a preceding sheet S 1 and a subsequent sheet S 2 in the image forming portion 10 including a feeding delay is set to ⁇ Tp.
  • the paper interval time ⁇ Tp between the preceding sheet S 1 and the subsequent sheet S 2 in the image forming portion 10 in this case is calculated based on a result of detection of the preceding sheet S 1 and the subsequent sheet S 2 by the image reference sensor 15 .
  • the paper interval time between the preceding sheet S 1 and the subsequent sheet S 2 which can be received by the finisher 100 is set to be equal to or more than ⁇ Tf. Further, the paper interval time between the preceding sheet S 1 and the subsequent sheet S 2 in the inverting portion is set to ⁇ T.
  • the post-processing such as the alignment of the subsequent sheet S 2 , the staple 103 and the like is too later, there is a risk that the post-processing failure is generated.
  • the computing portion 31 determines a time ⁇ Ts 1 until the second inverting sensor 25 detects the preceding sheet S 1 after the image reference sensor 15 detects the preceding sheet S 1 .
  • the computing portion 31 determines a time ⁇ Ts 2 until the second inverting sensor 25 detects the subsequent sheet S 2 after the image reference sensor 15 detects the subsequent sheet S 2 .
  • the computing portion 31 calculates a value obtained by adding the paper interval time ⁇ Tp between the preceding sheet S 1 and the subsequent sheet S 2 which are detected by the image reference sensor 15 , to a difference between ⁇ Ts 1 and ⁇ Ts 2 , as the paper interval time ⁇ T between the preceding sheet S 1 and the subsequent sheet S 2 in the inverting portion.
  • the control portion 30 transmits a signal to the first and second drivers 19 a and 24 a in such a manner that a paper interval time (a sheet interval time between the preceding sheet and the subsequent sheet in the discharge port 27 a ) at a time of discharging the sheet S becomes equal to or more than ⁇ Tf in correspondence to the calculated ⁇ T.
  • the first and second inverting rollers 19 and 24 are controlled by the control portion 30 , and adjust a start timing and an inverting speed of the sheet S from the inverting point.
  • the inverting speed in this case means a conveying speed of the sheet by the second inverting roller 24 after being inverted or a conveying speed of the sheet by the inverting conveying roller 26 provided in the downstream side of the second inverting roller 24 .
  • the conveying speed of the preceding sheet S 1 is slowed down due to an influence of the fixing portion 17 and a slip and an abrasion of the first and second inverting rollers 19 and 24 .
  • the subsequent sheet S 2 is conveyed faster than a target conveying speed under the transient influence of the fixing portion 17 without being affected by a reduction of a conveying efficiency (refer to a dotted portion in FIG. 2 ).
  • a start timing of the inverting portion of the subsequent sheet S 2 is delayed.
  • the start timing at the inverting point is set to be equal to or more than a paper interval time ⁇ Tf which is a limit of receiving the finisher 100 and equal to or less than a paper interval time ⁇ Tp at which a productivity of the image forming system 1 does not degrade.
  • the start timing of the inverting portion means a timing for inverting the second inverting roller 24 after stopping the second inverting roller 24 in a state that the sheet rear and is positioned at a predetermined position in an upstream side of the second inverting roller 24 .
  • the inversion is started by quickening the start timing of the inverting portion while targeting at a point near ⁇ Tf.
  • the start timing of the inverting portion is delayed while targeting at ⁇ Tp.
  • the paper interval time A of the image forming portion 10 is compared with ⁇ Tp (step 1 ), and in the case that ⁇ Tp is larger than the paper interval time A due to the feeding delay in the upstream side than the image forming portion, the inversion is carried out according to a normal control (step 2 ).
  • ⁇ Tp is equal to or less than the paper interval time A
  • ⁇ T is compared with ⁇ Tp (step 3 ), and if the paper interval time ⁇ T at the inverting point becomes equal to or more than ⁇ Tp, the start timing of the first and second inverting rollers 19 and 24 is quickened at the difference (step 4 ).
  • ⁇ T is compared with the paper interval time ⁇ Tf of the receiving condition of the finisher 100 (step 5 ), and if ⁇ T is equal to or more than ⁇ Tf, the inversion is carried out as it is in accordance with the normal control (step 6 ).
  • the start timing of the inverting roller (the timing at which the second inverting roller 24 is inverted) is delayed only at the difference between ⁇ Tf and ⁇ T, in such a manner that the paper interval becomes equal to or more than the paper interval time ⁇ Tf which can be received by the finisher 100 (step 7 ).
  • the sheet S in the case of discharging the sheet S to the finisher 100 while inverting the image forming surface of the sheet S after forming the image by the image forming portion 10 , the sheet S is sped up in a convey region by the inverting conveying roller 26 .
  • the sheet leading end is slowed down to a speed which can received the finisher 100 at a predetermined amount upstream position of the discharge roller 27 , and the sheet is discharged from the discharge port 27 a by the discharge roller 27 .
  • the computing portion 31 calculates ⁇ T obtained by adding ⁇ Tp to the difference between ⁇ Ts 2 and ⁇ Ts 1 .
  • a sheet conveying speed or a speed change timing by the inverting conveying roller 26 is controlled in such a manner that the paper interval becomes equal to or more than ⁇ Tf corresponding to the receiving condition of the finisher 100 and becomes equal to or less than ⁇ Tp at which the productivity of the image forming system 1 does not degrade.
  • ⁇ Tp is compared with the paper interval time A of the image forming portion 10 (step 1 ), and in the case that ⁇ Tp is larger than A due to the feeding delay, the inversion is carried out in accordance with a normal control (step 2 ).
  • ⁇ Tp is compared with the paper interval time ⁇ T at the inverting point (step 3 ), and if ⁇ T is equal to or more than ⁇ Tp, a distance at which the speeding up is carried out in an inverting path is made longer at the difference, and a position starting the slowing down is set to a downstream side (step 4 ).
  • ⁇ T is compared with ⁇ Tf (step 5 ), and it is determined whether or not ⁇ T is equal to or more than the paper interval time ⁇ Tf of the receiving condition of the finisher 100 .
  • ⁇ T is equal to or more than ⁇ Tf
  • the inversion is carried out as it is in accordance with the normal control (step 6 ).
  • ⁇ T is smaller than ⁇ Tf
  • the distance is made shorter by carrying out the speed-up conveying in the inverting path at the difference between ⁇ Tf and ⁇ T in such a manner that the paper interval becomes equal to or more than ⁇ Tf, and the position starting slowing down is set to an upstream side (step 7 ).
  • the embodiment that the paper interval is adjusted in such a manner as to be received by the finisher 100 by controlling the start timings of the first and second inverting rollers 19 and 24 is described.
  • the embodiment that the paper interval is adjusted in such a manner that the finisher 100 can receive by controlling the speed of the inverting conveying roller 26 is described.
  • the structure may be made such as to adjust so as to achieve such a paper interval that the finisher 100 can receive by controlling both the start timings of the first and second inverting rollers 19 and 24 and the speed of the inverting conveying roller 26 .
  • the image forming portion 10 to which a plurality of finishers 100 can be connected receives the information of the receiving time set in each of the finishers 100 by the image forming portion 10 side. It is possible to control the inverting timings of the first and second inverting rollers 19 and 24 and the conveying speed of the inverting conveying roller 26 such as to discharge at a paper interval time which is equal to or more than a lower limit value of the receiving time of the finisher 100 and equal to or more than such a paper interval time as to prevent the productivity from degrading based on the information.
  • the information of the receiving paper interval time is received in the image forming portion 10 side from the finisher 100 , and the paper interval time of the discharge is controlled in correspondence to the finisher 100 . Accordingly, it is possible to obtain the image forming system 1 which can maintain the stable conveying performance in correspondence to the various accessories without degrading the productivity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Conveyance By Endless Belt Conveyors (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Paper Feeding For Electrophotography (AREA)
US12/267,993 2007-11-15 2008-11-10 Image forming system Abandoned US20090127775A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-296383 2007-11-15
JP2007296383A JP2009122415A (ja) 2007-11-15 2007-11-15 画像形成システム

Publications (1)

Publication Number Publication Date
US20090127775A1 true US20090127775A1 (en) 2009-05-21

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Application Number Title Priority Date Filing Date
US12/267,993 Abandoned US20090127775A1 (en) 2007-11-15 2008-11-10 Image forming system

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US (1) US20090127775A1 (OSRAM)
JP (1) JP2009122415A (OSRAM)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100245946A1 (en) * 2009-03-31 2010-09-30 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US20100245948A1 (en) * 2009-03-31 2010-09-30 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US20160116881A1 (en) * 2014-10-24 2016-04-28 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
CN107792711A (zh) * 2016-09-06 2018-03-13 株式会社东芝 后处理装置、控制方法以及图像形成系统
EP3431425A1 (en) 2017-07-19 2019-01-23 OCE Holding B.V. Sheet transfer device, corresponding printing system, and method for transferring a sheet
US11090952B2 (en) 2014-10-24 2021-08-17 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
CN114763036A (zh) * 2021-01-15 2022-07-19 理想科学工业株式会社 供给装置
US20230067608A1 (en) * 2021-08-25 2023-03-02 Fujifilm Business Innovation Corp. Image forming apparatus

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US5822075A (en) * 1994-06-10 1998-10-13 Canon Kabushiki Kaisha Image forming apparatus having multiple sheet stacking units
US20060055766A1 (en) * 2004-09-16 2006-03-16 Canon Kabushiki Kaisha Image forming system, image forming method and image forming apparatus
US20080191413A1 (en) * 2007-02-14 2008-08-14 Masahiko Fujita Paper transport path of image forming apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5822075A (en) * 1994-06-10 1998-10-13 Canon Kabushiki Kaisha Image forming apparatus having multiple sheet stacking units
US20060055766A1 (en) * 2004-09-16 2006-03-16 Canon Kabushiki Kaisha Image forming system, image forming method and image forming apparatus
US20080191413A1 (en) * 2007-02-14 2008-08-14 Masahiko Fujita Paper transport path of image forming apparatus

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100245946A1 (en) * 2009-03-31 2010-09-30 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US20100245948A1 (en) * 2009-03-31 2010-09-30 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US20100245947A1 (en) * 2009-03-31 2010-09-30 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US8531741B2 (en) 2009-03-31 2013-09-10 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US8542415B2 (en) 2009-03-31 2013-09-24 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US8542416B2 (en) * 2009-03-31 2013-09-24 Brother Kogyo Kabushiki Kaisha Image processing apparatus
US20160116881A1 (en) * 2014-10-24 2016-04-28 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
US9442448B2 (en) * 2014-10-24 2016-09-13 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
US9855770B2 (en) 2014-10-24 2018-01-02 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
US11090952B2 (en) 2014-10-24 2021-08-17 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
US10391791B2 (en) 2014-10-24 2019-08-27 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
US11661298B2 (en) 2014-10-24 2023-05-30 Seiko Epson Corporation Medium transport unit, recording apparatus, and image reading apparatus
CN107792711A (zh) * 2016-09-06 2018-03-13 株式会社东芝 后处理装置、控制方法以及图像形成系统
EP3431425A1 (en) 2017-07-19 2019-01-23 OCE Holding B.V. Sheet transfer device, corresponding printing system, and method for transferring a sheet
US10479630B2 (en) 2017-07-19 2019-11-19 Océ Holding B.V. Compact interface module for a printing system
CN114763036A (zh) * 2021-01-15 2022-07-19 理想科学工业株式会社 供给装置
US20220227594A1 (en) * 2021-01-15 2022-07-21 Riso Kagaku Corporation Paper supply device
US11981532B2 (en) * 2021-01-15 2024-05-14 Riso Kagaku Corporation Paper supply device
US20230067608A1 (en) * 2021-08-25 2023-03-02 Fujifilm Business Innovation Corp. Image forming apparatus
US12061432B2 (en) * 2021-08-25 2024-08-13 Fujifilm Business Innovation Corp. Image forming apparatus

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