Against Front-edge Aligner Interposed Into Sheet Path Patents (Class 271/245)
  • Patent number: 10705473
    Abstract: An image forming apparatus includes: a transferer that forms a transfer nip for transferring an image to a sheet; a conveyance roller pair disposed on an upstream side relative to the transfer nip in a conveyance direction of the sheet; and a hardware processor that controls the conveyance roller pair such that the sheet conveyed to a conveyance nip formed by the conveyance roller pair is conveyed with a predetermined nip pressure so as to cause slack in the sheet between the transfer nip and the conveyance nip in which the hardware processor controls the conveyance roller pair so as to reduce the nip pressure at the conveyance nip in accordance with an increase in a conveyance amount of the sheet at the conveyance nip.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: July 7, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yoshiteru Kawakami, Yasuo Shiokawa, Takahiro Okubo
  • Patent number: 10662013
    Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: May 26, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
  • Patent number: 9796550
    Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: October 24, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
  • Patent number: 9745158
    Abstract: A conveying apparatus has first and second trays arranged on an upstream of a conveyor and configured to support the sheet in contact with the conveyor, a feeder configured to feed the sheet on the first tray toward the conveyor, a first sensor configured to output a first signal in response to the sheet being present on the first tray, a second sensor configured to output a second signal in response to the sheet being present between the first tray and the conveyor and configured to output the second signal in response to the sheet being present between the second tray and the conveyor, and a controller configured to execute a removal notifying process to output a notification indicating removal of the sheet on the first tray in response to output of the second signal before a time period since the first signal was output exceeds a threshold period.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: August 29, 2017
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Satoru Arakane, Yuki Matsui
  • Patent number: 9540198
    Abstract: A sheet conveying device, which is incorporated in an image forming apparatus, includes a pair of sheet holding rollers and a regulator. The pair of sheet holding rollers disposed along a sheet conveying path rotates and conveys the recording medium while holding a recording medium in a nip region thereof. The pair of sheet holding rollers includes a stopper that rotates with the pair of sheet holding rollers between a closing position at which the sheet conveying path is closed and an opening position at which the sheet conveying path is open. The regulator is movably disposed between a contact position and a retracted position with respect to the pair of sheet holding rollers. The pair of sheet holding rollers corrects a positional shift of the recording medium in the sheet conveying direction with the stopper at the closing position, and further conveys the recording medium after correction.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: January 10, 2017
    Assignee: Ricoh Company, Ltd.
    Inventor: Kohsuke Yoshida
  • Patent number: 9463941
    Abstract: A sheet skew feeding correction device has a controller that performs a first mode in which the leading end of the sheet conveyed by the first conveying portion abuts the sheet stopping portion in the first posture, and the sheet is nipped by the second conveying portion operating to convey the sheet while the sheet moves the sheet stopping portion toward the second posture against the urging force of the urging portion and performs a second mode in which the leading end of the sheet conveyed by the first conveying portion abuts the sheet stopping portion in the first posture, the sheet moves the sheet stopping portion against the urging force of the urging portion, and the leading end of the sheet abuts the nip portion of the stopped second sheet conveying portion so that a loop shape is formed in the sheet.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 11, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Mori
  • Patent number: 9365381
    Abstract: A compact printer having improved operational features. The printer includes an articulating print frame assembly coupled to a top cover that is adapted to rotate out of the top cover to an open position and to rotate into the top cover to a closed position. When the print frame is in an open position, the top cover is prevented from rotating toward the bottom housing to a closed position. The print frame includes a ribbon guide bar that facilitates loading of ribbon and media. The disclosed printer also includes a fixed or adjustable media sensor, and is configurable to accommodate an internal supply of web (roll) media or an external supply of fanfold media, a bottom housing having a top cover coupled thereto.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 14, 2016
    Assignee: Datamax-O'Neil Corporation
    Inventors: Kenneth Colonel, Raul Palacios, Ching-Yang Chou, Dick Feng Yi Tai
  • Patent number: 9327930
    Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: May 3, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
  • Patent number: 9233808
    Abstract: A paper feeder includes a document loading tray 2, a pickup roller 5 and an actuator. The actuator protrudes on a stacking face of the paper sheet stacking tray 2 and senses a paper sheet when touched, pushed and moved by a front edge thereof that is set. The actuator includes a first actuator 21 and a second actuator 22 that are fixed on a common swing shaft. The first actuator 21 is an actuator adapted for paper sheets of first sizes in width direction. The second actuator 22, disposed within business card width at an inner position than the first actuator 21 in width direction, is an actuator adapted for paper sheets of small sizes under normal paper sizes. An end on sensing side 221 of the second actuator 22 is located upstream in paper feed direction from an end on sensing side 211 of the first actuator 21.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: January 12, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasumasa Morimoto
  • Patent number: 9193549
    Abstract: The invention relates to a sheet conveying apparatus which includes: a rotator pair which includes a nip portion to nip and convey a sheet conveyed by a sheet conveying portion; a first moving portion which includes a first contact surface abutting on the sheet on an upstream of the nip portion of the rotator pair in a sheet conveying direction, the first contact surface moving while being pressed by the sheet; a second moving portion which includes a second contact surface abutting on the sheet on the upstream of the nip portion of the rotator pair in the sheet conveying direction, the second contact surface moving while being pressed by the sheet; and a guide portion which guides a leading edge of the sheet conveyed by the sheet conveying portion selectively to the first contact surface of the first moving portion and the second contact surface of the second moving portion.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masataka Fumoto
  • Patent number: 9102483
    Abstract: A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: August 11, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehito Osada, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
  • Patent number: 9022384
    Abstract: A recording-material transport apparatus includes a transport unit that transports a recording material, a detector that detects a position of the recording material in intersecting directions intersecting a transport direction in which the recording material is transported by the transport unit, and a moving member that moves the recording material transported by the transport unit to a predetermined position in a predetermined one of the intersecting directions on the basis of a detection result of the detector.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 5, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yousuke Hasegawa, Michio Tada, Takashi Abe, Yoshiyuki Takaishi, Yoichi Yamakawa, Hisakazu Onoe, Makio Uehara, Yasunobu Gotoh
  • Patent number: 9004488
    Abstract: A conveying apparatus includes a first pair of rollers having a drive roller and a pinch roller driven by the drive roller, a second pair of rollers provided downstream of the first pair of rollers, and an arm member supporting the drive roller and adapted to be swingable such that a force for pressing the drive roller against the pinch roller increases as a conveyance resistance of the sheet increases. The force for pressing the drive roller against the pinch roller decreases if driven by the moving sheet. The conveying speed of the second pair of rollers is set to be higher than the conveying speed of the drive roller so as to cause the drive roller to be driven by the sheet in the case where a skew of the sheet has been corrected and the sheet having the skew corrected is conveyed by the second pair of rollers.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 14, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideyuki Terashima
  • Patent number: 8991819
    Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
  • Patent number: 8989650
    Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chun Seung Yang
  • Patent number: 8985578
    Abstract: A sheet aligning device may include a sheet conveyance path; a detecting unit configured to detect a side edge of a sheet being conveyed in the sheet conveyance path; a stopper on an upstream side of the detecting unit and configured to open/close so as to allow/prevent passage of the sheet and to position a leading edge of the sheet; a first conveying unit on an upstream side of the stopper, the first conveying unit including a pair of first rollers configured to come in contact with/separate from each other; a second conveying unit on an upstream side of the first conveying unit, the second conveying unit including a pair of second rollers configured to come in contact with/separate from each other; and a horizontal movement unit configured to move the pair of first rollers in an axial direction based on a detection result output by the detecting unit.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: March 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Muneyasu, Junji Shirakawa, Yutaka Shoji, Takeshi Watanabe
  • Publication number: 20150014920
    Abstract: A supplement feeder for flat objects, comprising a receiving device with a stack compartment for receiving objects in the form of a stack, and a takeoff device for taking off individual objects from the stack, wherein the stack compartment has a front contact region against which the front edge of the stack rests, and equipped with guiding elements for guiding and shaping the stack, comprising a stack shoe that is arranged at the rear edge of the stack in order to guide the stack in the direction of the front contact region. According to the disclosure, this supplement feeder is equipped with a takeoff device for taking off individual objects from the object stack, and at least one component of the guiding elements, and in particular the stack shoe, is coupled to a knocking unit that transmits a discrete knock impact onto the respective component of the guiding element. Thereby malfunctions in the form of missed takeoffs or multiple takeoffs when taking off objects can be largely avoided.
    Type: Application
    Filed: June 18, 2014
    Publication date: January 15, 2015
    Inventors: Bernd HÖPNER, Ronald CELESTE, Florian HÖLZLE
  • Patent number: 8929797
    Abstract: A medium transport apparatus includes a medium guide member that forms part of the curved transport path and guides a medium to a downstream side, and that is provided so as to be capable of pivoting at an outward side from the curved transport path, and that changes the size of a space of part of the curved transport path by pivoting. The medium guide member has a pivot axis that is in an upstream side direction of a guide surface that guides the medium.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: January 6, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Ryo Honma
  • Patent number: 8919771
    Abstract: An image forming apparatus including a sheet conveying portion which conveys a sheet to be formed with an image, and an abutment member which is abutted by the tip end of a sheet conveyed by the sheet conveying portion, and movable to a first attitude of being abutted by the tip end of the sheet being conveyed, and to a second attitude of allowing passage of the sheet and being in the state of abutting the surface of the sheet, wherein the abutment member in the second attitude abuts a part which is outside an image forming region and on the sheet surface having the image forming region in a central part in a width direction orthogonal to a sheet conveying direction.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Mori
  • Patent number: 8915495
    Abstract: A media transport assembly includes a loadstop drive assembly to gather and compress a media stack in a media tray before a pick and feed cycle, and a pick drive assembly to pick a sheet of media from the media stack and feed the sheet of media to a media path. The loadstop drive assembly is positioned on one side of a gear wall and the pick drive assembly is positioned on an opposite side of the gear wall such that the pick drive assembly is driven by the loadstop drive assembly through the gear wall.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 23, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keith Jariabka, Kieran B Kelly
  • Patent number: 8910937
    Abstract: The present invention provides a sheet medium detection device, which comprises a light guide bar (2) provided on one side of a medium conveying passage (4) and provided with a plurality of reflection surfaces (21) arranged with Intervals along a length direction of the light guide bar, wherein each of the reflection surfaces (21) reflects the light within the light guide bar (2) to the other side of the medium conveying passage (4); a plurality of light receivers (31), each of which, being opposite to a reflection surface (21) of the light guide bar, is provided on the other side of the medium conveying passage (4); and a point light source (1) provided at least on one end of the light guide bar along the length direction of the light guide bar, wherein each of the reflection surfaces (21) is provided obliquely to form an obtuse angle relative to the light guide bar (2) on the side where the point light source (1) locates.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: December 16, 2014
    Assignee: Shandong New Beiyang Information Technology Co., Ltd.
    Inventors: Lei Zheng, Tianxin Jiang, Min Yang, Yang Liu
  • Patent number: 8905401
    Abstract: The present device includes a conveying path, a contact member coming in contact with the front of a printing medium to stop the conveyance of the medium, a hold member holding the front of the medium having contacted with the contact member, a first conveying unit conveying the medium so as to abut the contact member to form slack on the medium between itself and the hold member holding the medium, and a second conveying unit being provided nearer to the hold member than the first conveying unit in the conveying direction and conveying the medium so as to abut the contact member to form the slack. The second conveying unit is movable so that a part thereof existing on the side where the slack is formed on the medium in the conveying path is moved to the outside of the conveying path.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: December 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Toshihiro Nakagaki
  • Patent number: 8876108
    Abstract: A sheet transport apparatus includes: a transport portion that transports a sheet; a skew correction portion against which a leading edge of the sheet transported by the transport portion abuts for skew correction, the skew correction portion moving to a position where the skew correction portion does not hinder the transport of the sheet after the skew correction; and a plurality of sheet abutting portions that is provided in the skew correction portion and against that the leading edge of the sheet transported by the transport portion abuts, the plurality of sheet abutting portions respectively including a resin member, and an abutting portion which is provided in the resin member and having an abrasion resistance higher than that of the resin member, and against which the leading edge of the transported sheet abuts.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: November 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Uchida, Ryo Iwasawa, Yasuhiko Fuse
  • Patent number: 8849178
    Abstract: A sheet detecting apparatus including: a sheet detecting member having a plurality of abutment surfaces in a peripheral direction thereof, the sheet detecting member being rotated by a conveyed sheet abutting against one of the plurality of abutment surfaces; a detection portion which operates in association with the sheet detecting member; a sensor which generates a signal based on a position of the detection portion; and an urging portion which generates an urging force for positioning the one of the plurality of abutment surfaces of the sheet detecting member in a waiting position in which the leading edge of a sheet conveyed by a conveying portion abuts against the one of the plurality of abutment surfaces, and thereafter the urging portion switching the urging force to an urging force for positioning, in the waiting position, another one of the plurality of abutment surfaces against which a succeeding sheet abuts.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: September 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yoshimura, Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Yohei Suzuki
  • Publication number: 20140239580
    Abstract: Provided is a sheet conveying apparatus including: a pair of rollers which includes an upper roller and a lower roller and conveys a sheet in a nipping manner; a driving unit which independently drives the upper roller and the lower roller; a conveying unit which is disposed at the upstream of the pair of rollers in the sheet conveying direction and conveys the sheet to the pair of rollers; an overlapping unit which is provided between the pair of rollers and the conveying unit and overlaps a subsequent sheet on a precedent sheet in the conveying direction; and a control unit which controls the driving unit, wherein the control unit controls the driving unit so that: the upper roller and the lower roller are driven before a leading end of the precedent sheet conveyed by the conveying unit reaches the pair of rollers and the driving of the upper roller and the lower roller is stopped before a tail end of the precedent sheet passes the pair of rollers; the pair of rollers is driven again before a leading end of
    Type: Application
    Filed: December 4, 2012
    Publication date: August 28, 2014
    Inventors: Masatoshi Yoshida, Hiroharu Tsuji, Tomooku Koyama, Takuya Keino, Junichi Ochi
  • Patent number: 8807559
    Abstract: A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehito Osada, Minoru Kawanishi, Kenji Watanabe, Motohiro Furusawa
  • Patent number: 8789827
    Abstract: A sheet conveying device includes a pair of upstream sheet conveying rollers, a pair of downstream sheet conveying rollers, and a gate unit including multiple striking faces disposed adjacent to the pair of downstream sheet conveying rollers. The gate unit is enabled to enter and evacuate from a sheet conveyance path. A skew correction control mechanism is provided to correct skew by bringing the gate unit into the sheet conveyance path to cause the striking faces to collide with a leading end of the sheet with the skew while rotating the pair of upstream sheet conveying rollers. One or more rollers are included in one of the pair of upstream sheet conveying rollers and are disposed in the vicinity of a widthwise center of the sheet conveyance path. A width of one or more rollers is smaller than a widthwise interval between the multiple striking faces.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: July 29, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Yuji Karikusa
  • Patent number: 8740215
    Abstract: A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Yohei Suzuki, Motohiro Furusawa, Minoru Kawanishi
  • Patent number: 8733756
    Abstract: An apparatus for the vertical adjustment of combined front/top lays in a sheet processing machine includes a front/top lay carrier shaft carrying the front/top lays jointly in such a way that it can be pivoted with respect to a front/top lay drive shaft, or thrust joints disposed in carriers or coupling links for the front/top lays in such a way that they effect a lengthening of the carriers or coupling links in order to adjust the front/top lays. A sheet-fed rotary printing press having the apparatus, is also provided.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: May 27, 2014
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Andreas Mueller, Henning Niggemann, Burkhard Wolf
  • Patent number: 8699938
    Abstract: A sheet conveying apparatus includes: a rotating member configured to rotate by being pushed by a leading edge of a sheet being conveyed; a sensor configured to output a signal corresponding to a position of the rotating member; a first abutting portion provided on the rotating member and with which the leading edge of the sheet being conveyed comes into contact; and a second abutting portion provided on the rotating member on a side opposite from the first abutting portion with respect to a rotation shaft of the rotating member and configured to come into contact with the sheet being conveyed in the course of the rotation of the rotating member by being pushed by the leading edge of the sheet being conveyed.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keisuke Mogi
  • Patent number: 8672320
    Abstract: A recording-material transport apparatus includes a retracting member that moves at a speed lower than a transport speed of a recording material transported from an upstream side in a transport direction, to a downstream side in the transport direction along a transport path for the recording material, and that retracts from the transport path after a leading end of the recording material contacts with the retracting member, a first transport member that transports the recording material from the upstream side in the transport direction toward the retracting member, and a second transport member that further transports the recording material in contact with the retracting member to the downstream side. After the leading end of the recording material contacts with the retracting member, without being paused, transport of the recording material with the first transport member is continued to deliver the recording material to the second transport member.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: March 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yousuke Hasegawa, Michio Tada, Takashi Abe, Yoshiyuki Takaishi, Yoichi Yamakawa, Hisakazu Onoe, Makio Uehara, Yasunobu Gotoh
  • Patent number: 8641041
    Abstract: A printing medium supplying apparatus for an image forming apparatus includes an apparatus main body, and a printing medium aligning unit which is disposed on the apparatus main body to move between an aligning position at which the printing medium aligning unit aligns a printing medium and a distanced position at which the printing medium aligning unit is distanced from the aligning position.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: February 4, 2014
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Jin-soo Lee, Jae-yong Kim
  • Patent number: 8641043
    Abstract: A paper feed unit for a printer to form an image on a print paper by an image former, the paper feed unit including: a paper feed tray that stacks print papers to be fed; a paper transfer route that transfers print papers; a register roller that is provided upstream of the image former in a paper transfer direction in the paper transfer route and holds a fed print paper to adjust a timing to transfer the fed print paper to the image former; a pick-up roller that transmits a print paper stacked in the paper feed tray to the register roller, the pick-up roller being smaller in width than a width of a print paper to be transmitted; and a regulator that comes into contact with a loose portion of a print paper loosened in a paper feed route in between the pick-up roller and the register roller.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: February 4, 2014
    Assignee: Riso Kagaku Corporation
    Inventor: Naoya Masuda
  • Patent number: 8616548
    Abstract: A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Minoru Kawanishi, Motohiro Furusawa, Hiroki Yamaguchi, Shigeo Murayama
  • Patent number: 8608160
    Abstract: A recording apparatus includes a slider that has a cam face with which a cam of the stopper comes into sliding contact and moves in the insertion direction from a first position to a second position with a resistance when the cassette is inserted into the mounting unit. The cam face includes a first cam face on which the cam slides when the slider moves from the first position to the second position and a press cam face against which the cam presses when the paper sheet comes into contact with the stopper. The press cam face has an inclination relative to a reference straight line which is perpendicular to a plane parallel to the insertion direction of the cassette which is greater than that relative to a straight line which extends from the contact point between the press cam face and the cam to the shaft.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: December 17, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yu Shinagawa, Hiroki Chino, Yosuke Nakano, Tetsuya Tamura
  • Patent number: 8585048
    Abstract: A printing device includes: a registration roller that once stops a transferred sheet and then feeds the transferred sheet toward an inkjet head unit; a sheet feed system that transfers and feeds a sheet to the registration roller; a sheet refeed system that, during both-side printing, reverses a one-side printed sheet and transfers the one-side printed sheet to the registration roller; and a controller that, during both-side printing, controls the registration roller so as to feed a sheet, which is fed by the sheet feed system and the sheet refeed system, toward the inkjet head unit in accordance with a predetermined print schedule. The controller controls the sheet feed system in accordance with the print schedule so that a speed when a sheet fed from the sheet feed system is abutted against the inkjet head unit becomes lower during both-side printing than during one-side printing.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 19, 2013
    Assignee: Riso Kagaku Corporation
    Inventors: Ryota Yamagishi, Masahiko Kusuhata, Masashi Hara
  • Patent number: 8556259
    Abstract: A sheet conveying apparatus including, a conveying portion conveying a sheet; a rotation detection portion rotatably provided; a sensor portion detecting the conveyed sheet based on a rotational position of the rotation detection portion; a rotation transmission portion transmitting a rotational driving force to the rotation detection portion to rotate the rotation detection portion in a predetermined rotational direction after the rotation detection portion is rotated by being pushed by the leading end of the sheet; and an urging unit configured to apply an urging force to the rotation detection portion so that the rotation detection portion comes into contact with a surface of the sheet, thereafter the rotation detection portion is returned to a waiting position along with the passage of the rear end of the sheet through the rotation detection portion after the rotation detection portion is rotated by the rotational driving force of the rotation transmitting unit.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: October 15, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yohei Suzuki
  • Patent number: 8554124
    Abstract: A printing medium feeding apparatus includes a feeding part which feeds a printing medium, and a printing medium aligning roller part which aligns a leading edge of the printing medium fed from the feeding part and transfers the aligned printing medium to an image forming part which forms an image on the printing medium, wherein the printing medium aligning roller part comprises a pair of rollers which transfer the printing medium to the image forming part, and an aligning shutter which is rotationally coupled to at least one of the pair of rollers, which rotates when the leading edge of the printing medium contacts the aligning shutter with a pressure greater than a reference pressure in a reference direction and guides the leading edge of the printing medium fed from the feeding part toward the reference direction.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: October 8, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-soo Lee, Hoon Kang
  • Patent number: 8550458
    Abstract: A paper feeder according to the present invention includes a paper entrance block arranged above a flapper on au upstream side of a paper feed roller in a paper feeding direction. The flapper is configured to be capable of swinging in a vertical direction so as to alter its position between a first position in which part of a top face thereof on a downstream side in the paper feeding direction comes into contact with the paper feed roller and a second position in which the part thereof is located lower than the first position. The paper entrance block is configured so that when the flapper is in the first position, the lower end thereof comes into contact with the flapper and when the flapper is in the second position, a clearance is formed in a vertical direction between the paper entrance block and the flapper.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: October 8, 2013
    Assignee: Murata Machinery, Ltd.
    Inventor: Ryohei Ohtsuki
  • Patent number: 8538313
    Abstract: The present invention includes an image forming unit, a reversing unit configured to reverse the sheet on which the image has been formed by the image forming unit, a reconveyance path which conveys the sheet reversed by the reversing unit to a feeding path for forming an image on the sheet by the image forming unit again, a position detection unit which is provided on the reconveyance path and configured to detect a position of the sheet in a width direction, a skew-feeding correction unit which is provided on the reconveyance path and configured to correct skew-feeding of the sheet, wherein the position detection unit is disposed on the downstream of the skew-feeding correction unit in reconveyance path, wherein the image forming unit corrects the position of the image to be formed on the sheet, which is conveyed through the reconveyance path, based on a signal from the positioning detection unit.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: September 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akinori Tanaka
  • Patent number: 8528899
    Abstract: A sheet detecting apparatus that detects a sheet has a lever member; a biasing portion that biases the lever member for a first position where the abutting surface abuts against the leading end of the sheet; a supporting mechanism that movably supports the lever member to move in an order of the first position, a second position, and a third position, while keeping a abutting surface of lever member facing upstream; an interlocking portion that interlocks with the lever member; and a detector that detects a position of the interlocking portion.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yohei Suzuki
  • Publication number: 20130193639
    Abstract: A skewed sheet correcting device includes: first and second shutter members which move to a first position in which the first and second shutter members are pushed to be movable by a leading edge of a sheet, a second position which is disposed further downstream of the sheet conveyance direction than the first position to latch the leading edge of the sheet, and a third position which allows the sheet to pass; and a movement regulating member which, when one of the shutter members does not move to the second position, regulates the other shutter member in the second position, and, when both the first and second shutter members move to the second position, allows the first and second shutter members to move to the third position.
    Type: Application
    Filed: December 10, 2012
    Publication date: August 1, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: CANON KABUSHIKI KAISHA
  • Patent number: 8478182
    Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register shutter to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: July 2, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chun Seung Yang
  • Publication number: 20130161901
    Abstract: A sheet transport apparatus includes: a transport portion that transports a sheet; a skew correction portion against which a leading edge of the sheet transported by the transport portion abuts for skew correction, the skew correction portion moving to a position where the skew correction portion does not hinder the transport of the sheet after the skew correction; and a plurality of sheet abutting portions that is provided in the skew correction portion and against that the leading edge of the sheet transported by the transport portion abuts, the plurality of sheet abutting portions respectively including a resin member, and an abutting portion which is provided in the resin member and having an abrasion resistance higher than that of the resin member, and against which the leading edge of the transported sheet abuts.
    Type: Application
    Filed: May 11, 2012
    Publication date: June 27, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Wataru Uchida, Ryo Iwasawa, Yasuhiko Fuse
  • Patent number: 8459642
    Abstract: The present invention relates to a sheet conveying apparatus, comprising: a conveying portion conveying a sheet; a shutter member having an abutting surface for abutting the sheet to correct skew feeding; a biasing member for biasing the shutter member to position at a first position where the leading end abuts against the abutting surface; and a support mechanism which movably supports the shutter member to move in an order of the first position, a second position to which the shutter member moves by the sheet against biasing from the biasing member, and a third position where the shutter member abuts the sheet and stands by to move to the first position when a trailing end of the sheet passes the shutter member, while keeping the abutting surface facing upstream.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 11, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yohei Suzuki
  • Patent number: 8459641
    Abstract: In a sheet processing apparatus that is required for high productivity, it is needed to execute skew correction of a sheet in a short time. Thus, when the sheet is struck against a roller or a skew correction member at a high speed to execute skew correction, it may cause a scratch or a noise caused by an impact. Accordingly, the sheet is struck against a skew correction stopper that is moving at a speed slower than a sheet conveyance speed to execute skew correction.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 11, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Ishikawa, Hitoshi Kato, Yasuo Fukatsu
  • Patent number: 8439358
    Abstract: A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: May 14, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Watanabe, Yohei Suzuki, Motohiro Furusawa, Minoru Kawanishi
  • Patent number: 8434755
    Abstract: A sheet guide is rotationally supported by a shaft member to rotate freely on the shaft member. The sheet guide includes a support part that supports the sheet guide on the shaft member, a guide part that contacts sheets and guides sheets in a predetermined direction, and a weight, which has a predetermined weight, is arranged on an opposite side of the support part from the guide part, wherein the weight causes the guide part to rotate to a predetermined position when an external force applied to the guide part is released.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: May 7, 2013
    Assignee: Oki Data Corporation
    Inventor: Manabu Imai
  • Patent number: 8434759
    Abstract: A sheet transport device includes an abutment member that moves downstream in a sheet transport direction and against which a leading end of a sheet that has been transported from upstream in the sheet transport direction abuts; and a transport unit that transports the sheet whose leading end has abutted against the abutment member further downstream. The abutment member moves at least to the transport unit in a state in which the leading end of the sheet abuts against the abutment member, and the abutment member is separated from the leading end of the sheet after the transport unit has started to transport the sheet.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: May 7, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Abe, Michio Tada, Yoshiyuki Takaishi, Yousuke Hasegawa, Yoichi Yamakawa, Hisakazu Onoe, Makio Uehara, Yasunobu Gotoh
  • Patent number: 8419013
    Abstract: A disclosed sheet aligning device includes a sheet conveyance path; a detecting unit configured to detect a side edge of a sheet being conveyed in the sheet conveyance path; a stopper provided on an upstream side of the detecting unit and configured to open/close in such a manner as to allow/prevent passage of the sheet through the sheet conveyance path and to position a leading edge of the sheet being conveyed in the sheet conveyance path; a first conveying unit provided on an upstream side of the stopper, the first conveying unit including a pair of first rollers configured to come in contact with/separate from each other; a second conveying unit provided on an upstream side of the first conveying unit, the second conveying unit including a pair of second rollers configured to come in contact with/separate from each other; and a horizontal movement unit configured to move the pair of first rollers in an axial direction of the first rollers based on a detection result output by the detecting unit.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: April 16, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Muneyasu, Junji Shirakawa, Yutaka Shoji, Takeshi Watanabe