Feed By Successive Approach And Retraction Patents (Class 271/118)
  • Patent number: 10752456
    Abstract: A sheet conveying device includes a sheet supporting portion, a first lever pivotable by contact with a sheet supported by the sheet supporting portion, a hook movable together with the first lever, a first cam configured to, when engaging the hook, stop rotating in a rotation direction of the first cam, a spring configured to urge the first cam in a rotation direction, a sector gear rotatable together with the first cam, a drive gear configured to, when engaging the sector gear, transmit a drive force to the sector gear, a feed roller rotatable in contact with the sheet, and a drive mechanism configured to receive a drive force from the sector gear and move one of the feed roller and the sheet supporting portion toward the other of the feed roller and the sheet supporting portion, to increase contact pressure between the feed roller and the sheet.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: August 25, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yusuke Ikegami
  • Patent number: 10196227
    Abstract: A sheet folding device includes first and second folding rollers as a pair arranged on a sheet transfer path located downstream of a printing unit and configured to form a fold on a printed sheet. At least the first folding roller includes a small-diameter portion formed at a position corresponding to a range of a width of a separating roller in the sheet width direction, and a large-diameter portion formed at a position other than the position of the small-diameter portion.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 5, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Kunihiro Maeda
  • Patent number: 10155634
    Abstract: A sheet feeding apparatus, comprising: a feeding rotating member; a cam member; a driving force transfer portion configured to transfer a driving force from a drive source to the cam member and include a one-way clutch the one-way clutch transferring a driving force causing the cam member to rotate in a first direction; a link member configured to press the support member to rotate based on the rotation of the cam member; and a brake unit configured to reduce a rotational torque which is generated by the cam member pressing the link member to cause the cam member to rotate in a first direction in a case where the cam member rotates in the first direction by a driving force transferred from the drive source through the driving force transfer portion to make the feeding rotating member move from the separation position to the feed position.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: December 18, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Wataru Murata
  • Patent number: 10061261
    Abstract: A coupling mechanism of the present disclosure includes a drive transmission member, a coupling member and a biasing member. The drive transmission member includes a shaft portion and an engagement pin. The coupling member includes a plurality of engagement protrusions and a holding protrusion which is smaller than the engagement protrusion. The holding protrusion makes contact with the engagement pin in a state where the engagement pin makes contact with the pressing surface. A load in a reverse rotation direction is applied from the holding protrusion to the engagement pin when the coupling member is reversely rotated.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 28, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yoshio Sugishima
  • Patent number: 10053314
    Abstract: A sheet feeding apparatus includes a first rotary member to feed a sheet supported on a sheet supporter, a second rotary member to feed the sheet with a feeding force weaker than the first rotary member, and a third rotary member in contact with a separation member to separate the sheets fed by the first rotary member one by one. A drive transmission switches between a first drive transmission state in which a driving force from a motor to the first rotary member and the third rotary member is transmitted while the driving force from the motor to a second rotary member is cut off, and a second drive transmission state in which the driving force from the motor to the second rotary member is transmitted while the driving force from the motor to the first rotary member and the third rotary member is cut off.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: August 21, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masaki Omori
  • Patent number: 9845211
    Abstract: A media separation apparatus may include: a pickup roller disposed at one side of the loaded media, and configured to sequentially pick up and transfer the loaded media; a feed roller disposed separately from the pickup roller in a media feeding direction, and configured to feed the media picked up and transferred by the pickup roller toward a transfer path; and a media separator disposed at a position facing the feed roller, having a plurality of separation rollers and a separation belt wound around a part of the circumference of each of the separation rollers, and configured to separate a following medium from a leading medium through friction of the separation belt, the following medium being in close contact with the leading medium fed by the feed roller and transferred at the same time as the leading medium.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: December 19, 2017
    Assignee: NAUTILUS HYOSUNG INC.
    Inventors: Sung Ho Park, Jin Hwan Cha, Jae Hoon Kwak, Kyoung Sik Kim
  • Patent number: 9498979
    Abstract: A pressing unit used for pressing a pressing member into a pressing target includes a plurality of attachment portions to which the pressing member is attached, in a detachable manner; and a pressing force generation mechanism which generates different pressing forces in each of the attachment portions.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: November 22, 2016
    Inventors: Hideo Mikuriya, Takuya Yasue
  • Patent number: 9346639
    Abstract: A medium storage box is provided. The medium storage box includes a first supporting plate for storing first medium, a second supporting plate spaced apart from the first supporting plate, for storing second medium, and a pickup roller, disposed between the first supporting plate and the second supporting plate, for selectively picking up one of the first medium and the second medium.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 24, 2016
    Assignee: LG CNS CO., LTD.
    Inventor: Do Wan Kim
  • Patent number: 9284141
    Abstract: A sheet feeding roller 101 which feeds a sheet S stacked on a sheet supporting plate 110 capable of being lifted and lowered is swingably supported at a swing end of a sheet feeding roller supporting arm 104 which is arranged swingably in an up-and-down direction and a roller biasing member applies a force to the sheet feeding roller supporting arm in a direction that the sheet feeding roller is pressed to sheets S stacked on a sheet stack tray. A swing fulcrum 104a is arranged in a range between a tangential line of the sheet feeding roller at the upstreammost pressing position against the sheet feeding direction and a tangential line of the sheet feeding roller at the downstreammost pressing position out of pressing positions where the sheet feeding roller is pressed to the sheets as being varied in accordance with a sheet stacking state of the sheets.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 15, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Kosuga
  • Patent number: 9272862
    Abstract: When a sheet is determined to arrive at a registration roller, a motor is temporarily stopped and then, is rotated so as to return a cam to an initial position. When the motor is rotated, in a case where a relation between a rotation angle ? of the cam at the time of stopping the motor and a rotation angle ? of the cam according to the rotation of the motor in a time required for the motor until acceleration up to constant-speed rotation from a stopped state of the motor and until deceleration from the constant-speed rotation and stop after the deceleration is “?<360??”, the motor is rotated at a first speed by controlling acceleration/deceleration of the motor and, in a case where the relation is “?>360??”, the motor is rotated at a constant second speed lower than the first speed.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 1, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satohisa Tateishi
  • Patent number: 9242817
    Abstract: A sheet conveyer comprises a sheet support surface; a first roller to convey sheets; a second roller to separate one by one the sheets to convey a sheet downstream; a holder configured to be swingably supported about a swing center axis, wherein the first roller is attached to the holder to be rotatable; and a guide formed of a separate member and comprising a guide surface extending upstream with respect to an upstream end portion of the holder and the guide guides the sheet to a portion below the holder and the first roller.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: January 26, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tsuyoshi Suganuma
  • Patent number: 9212014
    Abstract: The moving mechanism of a sheet feeding device has a first moving member and a second moving member. The first moving member is held in a position corresponding to the number of sheets supported by a sheet support member, and when moving in a specific direction can move the sheet support member in the separation direction away from a paper feed roller. The second moving member moves out and back through a specific range of movement in each revolution of the paper feed roller, engages the first moving member and moves the first moving member in the specific direction when moving out, and releases said engagement when moving back.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: December 15, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hiroyuki Masubuchi
  • Patent number: 9199495
    Abstract: A recording apparatus includes a support unit that supports a recording medium; a feed roller that feeds the medium by rotating in contact with the recording medium supported on the support unit; and a swing member that displaces the feed roller comes in contact with and separates from the recording medium, and is provided to support the feed roller and be able to swing with a swing shaft, in which the swing member includes a regulating portion that is able to attain a first state separated from the support unit in a state in which the feed roller is in contact with the recording medium, and a second state that regulates a number of recording media set on the support unit by relatively approaching the support unit more closely than in the first state in a state in which the feed roller is separated from the recording medium.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: December 1, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Hiromichi Kitsuki
  • Patent number: 9126781
    Abstract: A sheet feeder, which is included in an image forming apparatus, includes a sheet bypass member openably closable to one side surface of a body of the image forming apparatus, a pickup roller to feed and convey a sheet loaded on the sheet bypass member, and an arm to hold the pickup roller and to open and close with the pickup roller. The arm includes a contact portion extending in a shape of projection toward an upstream side from the pickup roller in a sheet conveying direction of the sheet bypass member. As the sheet bypass member is rotated upward to be closed and stored to the side surface of the body, the contact portion of the arm contacts the sheet bypass member to rotate the arm upward to cause the sheet bypass member to approach to the side surface of the body.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 8, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventor: Jumpei Aoyama
  • Patent number: 8925913
    Abstract: A sheet conveying device such as a feed mechanism includes a pick-up roller and a cover member. The pick-up roller feeds, into an apparatus, a sheet such as a document on a placing table such as a document placing table on which the sheet is placed. The cover member such as a pick-up cover covers the pick-up roller. The cover member is supported at both ends thereof on a shaft of the pick-up roller or on shaft bearings that receive the shaft of the pick-up roller.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Hiroshi Kubo, Shinya Kitaoka, Takehisa Shimazu, Takeshi Akai, Takuma Ariga, Fumiyuki Heishi, Michitaka Suzuki, Yoshito Suzuki, Norio Kimura, Hiroaki Utagawa, Kenji Hayasaka, Jun Yamada, Kenichiro Morita, Ikuhisa Okamoto, Satoshi Saito
  • Patent number: 8888091
    Abstract: A sheet feeding apparatus includes a stacking plate configured to stack sheets, a sheet feeding unit configured to feed the sheets by contacting the sheets stacked on the stacking plate, an elevating unit configured to elevate the stacking plate by a drive transmitted from a drive unit, a drive transmission unit configured to transmit the drive from the drive unit to drive the sheet feeding unit, and a clutch mechanism configured to cause the drive transmission unit to transmit the drive from the drive unit to the sheet feeding unit after the elevating unit urges the sheets stacked on the stacking plate toward the sheet feeding unit by elevating the stacking plate.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Hosohara
  • Patent number: 8817338
    Abstract: A scan mechanism and a scan module are provided. The scan mechanism adapted to be used in a scan module includes a rack and a scan unit. The rack has an engaging surface, a bottom surface and a plurality of teeth disposed on the engaging surface. Each of the teeth comprises a top end, wherein the distance between the centers of any two adjacent top ends is W, the shortest distance from the top end of each tooth to the bottom surface of the rack is D, and W/D is from 0.56 to 0.79. The scan unit includes a gear engaged with the teeth of the rack and adapted to roll along the engaging surface of the rack, wherein the scan unit is slidably disposed on the rack through the gear.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: August 26, 2014
    Assignees: Cal-Comp Precision (Singapore) Limited, Cal-Comp Electronics & Communications Company Limited
    Inventors: Domingo Abao Vicente, Jr., Chia-Hung Kao
  • Patent number: 8807555
    Abstract: An automatic document feeder includes an upper cover, a pick-up arm, a restriction element, and a document stopper. The pick-up arm is movable between a first position and a second position. A rotating shaft of the restriction element is pivotally coupled to the pick-up arm. A rotating shaft of the document stopper is pivotally coupled to the upper cover. Moreover, the rotating shaft of the restriction element and the rotating shaft of the document stopper are not in parallel with each other. When the pick-up arm is located at the first position, a swinging action of the document stopper is limited by the restriction element. When the pick-up arm is located at the second position, the swinging action of the document stopper is no longer limited by the restriction element, so that the document stopper can be freely swung.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: August 19, 2014
    Assignee: Primax Electronics Ltd.
    Inventor: Shang-Hsien Tsai
  • Patent number: 8811883
    Abstract: The present invention provides a printing apparatus and a printing method, in which a very thick and rigid printing medium such as board paper can be conveyed with stable conveyance accuracy, and in which a high-quality image can be printed thereon. In order to achieve this, paper on a front tray is conveyed onto a rear tray approximately along a plane containing a position on a platen, and then the paper is conveyed onto the front tray through the position on the platen. When the paper passes through the position on the platen, an image is printed on the paper.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuo Miyauchi
  • Patent number: 8764006
    Abstract: An image recording device having a recording unit to record an image on a sheet is provided. The image recording unit includes a feed guide defining a first conveying path; an arm disposed between the recording unit and the tray, the arm having a feed roller rotatably disposed at a free end and configured to feed the sheet in the tray to the first conveying path. The arm pivots between a first arm position, and a second arm position. The return guide pivots between a first return guide position, and a second return guide position. A space occupied by the return guide in the first return guide position overlaps a space occupied by the arm in the second arm position. The return guide is in the second return guide position when the arm is in the second arm position which is retracted from an insertion space occupied by the tray.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: July 1, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kenji Samoto, Yuji Koga
  • Patent number: 8764005
    Abstract: A recording medium feeding device includes a first support member that supports a feed roller and is configured to be swingable about a pivot shaft so that the first support member swings to displace the feed roller in directions to and away from the recording medium, a first engagement section that includes a gear that swings with the first support member, and a second engagement section that is engageable with the first engagement section when the first support member swings to move the feed roller away from the recording medium, wherein engagement of the first engagement section and the second engagement section is maintained in a state where a power in a swing direction is not transmitted to the first support member, and engagement of the first engagement section and the second engagement section is released when the power in the swing direction is transmitted to the first support member.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: July 1, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Hiroyuki Tajima
  • Patent number: 8708329
    Abstract: A document conveying device of the present disclosure includes a feeding unit, a stopper, and a restriction surface. The feeding unit is swingably supported on a first swinging fulcrum and is disposed selectively at a paper feeding position or at a retracted position. The stopper is swingably supported on a second swinging fulcrum, and has a document restriction portion and an engagement piece. The restriction surface is provided on the main body side of the document conveying device, and extends downward from a position coinciding with a first trajectory toward an inner side of the first trajectory, while extending downward from a position coinciding with a second trajectory toward an inner side of the second trajectory. When the feeding unit is at the retracted position, the engagement piece is engaged with the restriction surface, and when the feeding unit is at the paper feeding position, the engagement therebetween is released.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 29, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Katsuhiko Hanamoto, Akira Horie
  • Patent number: 8699101
    Abstract: An image reader is provided, which includes a feed tray that has a loading surface and is swingable around a first swing axis parallel to a width direction of a document sheet placed on the feed tray between a first position where the loading surface is directed downward above a housing and a second position where the loading surface is directed upward at an upstream side relative to the housing in the feeding direction, a first opening formed between the housing and the feed tray placed in the second position, the first opening being configured such that an inside of the housing communicates with an outside of the housing therethrough, a second opening formed in a position higher than a power supply unit and lower than the first opening inside the housing, and a communication path through which the first opening communicates with the second opening.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 15, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Takaaki Mukai
  • Patent number: 8678375
    Abstract: A sheet feeder includes a sheet placing portion, a feeding member, a supporting body, a driver, an electromagnetic clutch and a retraction controller. The supporting body is capable of changing a posture between a sheet feeding posture of the feeding member and a retracting posture for retracting the feeding member. The electromagnetic clutch is capable of changing a state between an engaged state in which a drive force is transmitted to the supporting body and a disengaged state in which the drive force is not transmitted to the supporting body. The retraction controller stops the output of a drive force after the electromagnetic clutch is set in the engaged state and the supporting body is set to the retracting posture by the drive force, and sets the electromagnetic clutch in the disengaged state when an engagement keeping time elapses after the output of the drive force is stopped.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: March 25, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Katsuhiko Hanamoto
  • Patent number: 8657280
    Abstract: A paper-feeding device and a multi-function printer (MFP) using the paper-feeding device are provided. The MFP includes a housing with the paper-feeding device installed thereon. The paper-feeding device includes an outer case, an inner case and a retainer. The outer case has first side-walls, openings and slots, in which each opening and each slot on the opening are correspondingly disposed on each first side-wall. The inner case is located beside the first side-walls of the outer case and has a second side-wall. The second side-wall has a position-limiting rib protruding towards the first side-walls. The retainer is located between the first side-walls and has a body, a protrusion and a pivot, in which the protrusion is disposed at a top-portion of the body and correspondingly located in the slots, and the pivot is located between the protrusion and a retaining-portion of the body and correspondingly locked in the openings.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: February 25, 2014
    Assignees: Cal-Comp Electronics & Communications Company Limited, Kinpo Electronics, Inc.
    Inventors: Po-Chih Chang, Chung-Liang Huang
  • Patent number: 8655255
    Abstract: A sheet conveyer device is provided. The sheet conveyer device includes a sheet tray, a feeder roller, a separator roller, a roller holder to rotatably support the feeder roller and to be coupled with the separator roller, spreading from a separator roller side toward a feeder roller side, to be movable between a first position and a second position, a manipulation arm configured to be coupled to the roller holder and to manipulate the roller holder to move between the first position and the second position, and a driving unit to drive the manipulation arm to move the roller holder. The manipulation arm is coupled to the roller holder at a coupled section, which is in a position between the feeder roller and the separator roller and in a position between two tangent planes which are common to the feed roller and the separator roller.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: February 18, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Hiroshi Ichikawa
  • Patent number: 8628077
    Abstract: ADF includes a pickup roller, an arm, a regulatory member, a drive motor and a control section. The pickup roller is supported at shaft thereof by the arm swung between a lowered position and a raised position. The drive motor supplies a driving force for the swing to the arm. The regulatory member constrains the arm from moving upward across the raised position. The control section sets a setting-speed of the drive motor to a first speed by which much importance is attached to the reduction of driving noise of the drive motor when a first driving factor causing the arm to move from the neighborhood of the raised position occurs, and sets the setting-speed to a second speed by which much importance is attached to the reduction of contact noise with the regulatory member when a second driving factor causing the arm to move from the lowered position occurs.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 14, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasumasa Morimoto, Toshiki Ohgita, Sohichi Takata
  • Patent number: 8616545
    Abstract: A link member is rotatably supported by a lifting plate. When the lifting plate moves upward and downward, the movement of the link member is guided by a guide portion provided on a link guide hole. Before sheet feeding starts, the movement of the link member is regulated by a holding portion provided on a lower end of the guide portion so as to hold the lifting plate in a standby position against a biasing force of a feed spring. When the sheet is fed, a feed cam rotating integrally with a feed roller presses the link member to release the link member from being locked by the holding portion of the link guide hole to thereby make the link member movable along the guide portion.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masatoshi Takiguchi
  • Patent number: 8585042
    Abstract: A pick mechanism is described. The pick mechanism comprises: a movable pick component; a stepper motor; and, a stepper motor controller. The stepper motor is operably connected to the pick component to drive the pick component in a sequence of movements, and each movement involves the pick component travelling in one direction between one position and another position in a required time. The controller produces control signals that control the motor such that the pick component is driven during a movement at or close to the minimum rate of acceleration required to complete the movement in the required time.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: November 19, 2013
    Assignee: NCR Corporation
    Inventors: Scott L. Colston, Douglas L. Milne
  • Patent number: 8573587
    Abstract: A sheet material feeding device includes a send-out means that is pressed to contact with the uppermost surface of the sheet material stacked on the sheet material stacking member to move the contact surface in a predetermined direction for sending out the sheet material, a lift up/down means that moves the sheet material stacking member between a feeding position and a separate position, a member to be detected that can move in the up and down direction when the sheet material stacking member moves, a detecting member that can output a detection signal when the member to be detected moves to a predetermined position, and a cassette that supports the sheet material stacking member and can be attached and detached from an apparatus main body. The cassette has an engaging portion for moving the member to be detected to the predetermined position when being attached to the apparatus main body.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 5, 2013
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Shinji Yoshinaga
  • Patent number: 8540230
    Abstract: When a sheet is fed, a feeding roller is rotated in the direction opposite to the direction in which the sheet is fed to draw out the uppermost sheet from a separation claw, and then the sheet is fed in such a manner that the feeding roller is rotated in the direction in which the sheet is fed to feed the drawn out sheet along the upper surface of a separation claw. When the sheet is fed, a curvature formation portion curves downward both ends in the width direction of the second and subsequent sheets to integrally lower pressing portions for pressing both ends in the width direction of the sheet along with the curved sheets and to separate the pressing portions from the uppermost sheet, thereby preventing the leading end of the uppermost sheet from catching the pressing portions.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: September 24, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Junji Yasuda
  • Patent number: 8517373
    Abstract: A sheet feeder includes a pickup roller for feeding a sheet on a tray toward a predetermined processing position, an arm member rotatably supporting the pickup roller, a rotary shaft supported on the housing to be rotatable about an axis thereof, a coupling member for coupling the arm member and the rotary shaft, a pivoting mechanism for pivoting the arm member via the rotary shaft so that the pickup roller shifts its position between a feeding position and a retracted position, and a controller for controlling the operation of the pivoting mechanism. The controller controls the arm member to pivot in such a direction that the pickup roller moves toward the retracted position when a sheet is placed on the tray.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: August 27, 2013
    Assignee: Kyocera Mita Corporation
    Inventor: Hiroyuki Harada
  • Patent number: 8505905
    Abstract: A sheet feeding device comprising a supply roller for feeding sheets mounted on a tray, a drive shaft for supporting the supply roller and rotationally driving the same, first and second supporting arms swingably supported on the drive shaft, a feed roller rotatably supported on the first and second supporting arms, a feed roller transmission mechanism for rotating the feed roller in conjunction with the rotation of the supply roller, first and second transmission mechanisms for swinging the first and second supporting arms, and first and second resilient retaining members which are capable of retaining the first and second supporting arms, the first and second transmission mechanisms shifting the timings that the respective first and second supporting arms are swung against the corresponding resilient retaining members. An automatic sheet transfer device comprising this sheet feeding device. An electrophotographic image forming device comprising this automatic sheet transfer device.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: August 13, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Motoki Takata, Keiko Toyoda, Masahiro Nonoyama
  • Patent number: 8496240
    Abstract: An automatic document feeder includes an upper cover, a document pick-up module, and a conveying channel. The upper cover has a first hooking element. The document pick-up module is arranged between the upper cover and the conveying channel. In addition, the document pick-up module has a second hooking element. When the automatic document feeder is operated in a standby mode, the document pick-up module is swung to a position near the upper cover and the second hooking element is engaged with the first hooking element, so that the document pick-up module is fixed on the upper cover. Since the document pick-up module is not contacted with the document when the automatic document feeder is operated in the standby mode, the possibility of causing an erroneous action of the document pick-up module will be eliminated.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: July 30, 2013
    Assignee: Primax Electronics, Ltd.
    Inventors: Tung-Wen Tu, Long-Chao Zhao
  • Patent number: 8490962
    Abstract: A recording apparatus according to an aspect of the invention includes a sheet feeding cassette that can accommodate a stack of recording materials; a pick-up roller that comes into contact with the top recording material of the recording materials accommodated in the sheet feeding cassette to feed the recording material; a roller holder that is supported at a base end so as to be rotatable and has the pick-up roller at a tip, the pick-up roller being pressed against the recording material; and a lever that is supported at a base end so as to be rotatable and has a pressing portion at a tip, the pressing portion being pressed against the recording material. The lever is disposed on the roller holder and is supported coaxially with the roller holder.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 23, 2013
    Assignee: Seiko Epson Corporation
    Inventors: So Ishikawa, Toshimitsu Ohara
  • Patent number: 8480075
    Abstract: An image forming apparatus having a pickup roller rotated to pick up a printing medium. The image forming apparatus includes support members operated in connection with the rotation of the pickup roller, and the pickup of the printing medium is carried out under the condition that both sides of the printing medium are supported by the support members. The image forming apparatus thereby prevents jams generated in the process of picking up a deformed printing medium.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: July 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byung Jun Lee
  • Patent number: 8480082
    Abstract: A sheet is fed to a registration roller pair by a separation-feeding unit formed by a sheet feeding roller and a separation portion, and is caused to abut a nip portion of the registration roller pair at rest to form a loop in the sheet. Then, when the registration roller pair rotates at a predetermined timing to convey the sheet, a pressurization plate is raised again to bring the sheet into press contact with the sheet feeding roller to thereby impart a conveyance force to the sheet, making it possible to feed the sheet reliably to the registration roller pair.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: July 9, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kannari, Takeshi Suga
  • Patent number: 8465017
    Abstract: A supply device includes: a supply roller that rotates around a first axis and supplies a medium; a rotary unit that rotates around a second axis in a determined direction to move the roller from a first position to a second position; a restriction part that, when the roller is at the first position, restricts rotation of the rotary unit in the determined direction; a member that rotates around a third axis; and a swing part that, when rotation of the rotary unit in the determined direction is restricted, swings in a first direction and makes the member separate the restriction part from the rotary unit to move the roller to the second position, and that, when the roller is at the second position, swings in a second direction and rotates the rotary unit in a direction opposite to the determined direction to move the roller to the first position.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: June 18, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yuji Hayakawa
  • Patent number: 8448935
    Abstract: A pickup mechanism includes a main frame, a supporting element mounted to the main frame, and a pickup module positioned in the main frame and including a pickup arm, a transmitting element, a separation element, a pickup element and a barrel element. The separation element includes a separation shaft and a separation roller. The pickup element includes a pickup shaft and a pickup roller. The separation roller and the pickup roller are restricted in the pickup arm. The transmitting element links the separation shaft and the pickup shaft. The pickup arm is pivoted at the separation shaft. The barrel element has a base portion pivotally mounted around the pickup shaft, and a stopping block. When the pickup module swings upward or downward, the barrel element is driven to rotate along with the pickup shaft to make the stopping block against the supporting element or apart from the supporting element.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: May 28, 2013
    Assignee: Foxlink Image Technology Co., Ltd.
    Inventors: Shao-Yang Wu, Yueh-Shing Lee
  • Patent number: 8439352
    Abstract: A one-way clutch is mounted on an outer periphery of a rotary shaft in a manner to place a clutch needle bearing in contact with the outer periphery of the rotary shaft. A rotary member is disposed on one side of the one-way clutch and engaged with the one-way clutch to be subjected to the rotation of the rotary shaft transmitted thereto. A retaining member is mounted on the outer periphery of the rotary shaft and located on the opposite side of the one-way clutch from the rotary member, while an urging unit is provided for urging the one-way clutch to abut against the retaining member.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: May 14, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Takeji Morikawa, Hiroshi Murasaki
  • Patent number: 8430394
    Abstract: A sheet feeding device includes a sheet cassette which accommodates stacked sheets. The sheet feeding device further includes a pickup roller, a separation pad, a separating roller pressing the sheet against the separating pad and a holder arm which holds the pickup roller and the separating roller. The sheet feeding device still further includes an urging member configured to urge the separating roller toward the separating pad and includes a supporting portion configured to support a specific portion of the holder arm. When the sheet cassette is removed, the support portion supports the specific portion of the holder arm at a supporting position and the pickup roller is positioned at an upper position.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: April 30, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Junji Uehara
  • Patent number: 8424867
    Abstract: A sheet feeder includes: a friction pad held by a pad holder; and a separation roller that is in contact with the friction pad while in rotation. A separation nip formed between the friction pad and the separation roller separates a recording medium from a plurality of recording media fed into the separation nip, and the pad holder includes a convex portion that is provided downstream of the friction pad in a sheet feeding direction and at a middle portion in a first width direction perpendicular to the sheet feeding direction and that is capable of coming into contact with the recording medium.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: April 23, 2013
    Assignee: Ricoh Company Limited
    Inventor: Ryohei Morisaki
  • Patent number: 8387969
    Abstract: A sheet feeding apparatus includes a sheet stacking portion for stacking a sheet, a sheet feeding roller for feeding the sheet stacked on said sheet stacking portion, a supporting member, rotatably supported by a base member, for rotatably supporting said sheet feeding roller, and a spring stretched between the base member and an acting portion of the supporting member. The acting portion of the supporting member is located downward with respect to a rotation center of the supporting member when a sheet stacking amount is small, and the acting portion of the supporting member is located upward with respect to a rotation center of the supporting member when a sheet stacking amount is large.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: March 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinya Sonoda, Masato Izumi
  • Patent number: 8322705
    Abstract: A controller sets a pressure-contact time from memory in accordance with rigidity of a sheet and starts a feeding operation of a sheet by causing a feeding roller to be pressure contacted with sheets on a sheet stacking plate. The controller controls the feeding roller to be separated from the sheets on the sheet stacking plate after passage of the pressure-contact time. In this way, it is possible to set the optimum pressure-contact time at the time of feeding sheets in accordance with the kind of sheet being fed and realize a stable feeding operation. Since the controller controls a driving unit based on a detection signal of a sheet-surface detecting flag that detects the height of the uppermost surface of a sheet bundle, it is possible to realize the stabilization and acceleration of a contacting operation.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 4, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Henrique Massanori Oka, Kazushi Nishikata, Kei Sawanaka
  • Patent number: 8302957
    Abstract: A pick-up assembly moves a sheet of recording medium from a stack of recording media. The pick-up assembly includes a pick arm having a first end and a second end. Notably, a pivotal mounting is located proximate the first end of the pick arm; and a pick-up roller is mounted proximate the second end of the pick arm. Lastly, a motor and a transmission are located inside the pick-up roller.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: November 6, 2012
    Assignee: Eastman Kodak Company
    Inventors: Richard A. Murray, Juan Manuel Jimenez, Wayne Edward Stiehler
  • Patent number: 8302956
    Abstract: A sheet feeding apparatus, in which a drive motor rotates a pickup roller, and a drive transmission portion provided between the drive motor and the pickup roller transmits a drive from the drive motor to the pickup roller. During sheet feeding, one of the drive motor and the drive transmission portion causes the pickup roller to perform an intermittent drive of iterating the drive and a stop, so that a sheet is gradually deflected between the pickup roller and separation claws.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: November 6, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Matsushima, Yasuhiro Uchida, Hirofumi Hori, Hitomi Suzuki
  • Patent number: 8262082
    Abstract: A medium supplying unit of an image forming apparatus includes: a cassette frame; a loading plate which is movably coupled to the cassette frame, and which supports a printing medium thereon; a pickup roller which picks up the printing medium from the loading plate; and a loading plate moving unit which causes the loading plate between a knock up state in which the loading plate located to allow the printing medium can be picked up by the pickup roller and a knock down state in which the loading plate is separated from the pickup roller, the loading plate moving unit causing the loading plate to move during when the loading plate is in the knock down state so as to reduce the occurrence of multiple sheets of printing media being picked up and supplied.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jin-Soo Lee
  • Patent number: 8246043
    Abstract: A media retrieval mechanism includes a pivot shaft, a media delivery device and a driving device. The media delivery device is capable of rotating about the pivot shaft. The media delivery device includes a contact portion and a rotating arm. The contact portion is capable of engaging at least one media. The driving device is attached to the pivot shaft. The driving device is capable of being driven by the pivot shaft. The driving device includes a driving member and the driving member includes a driving arm. The driving arm is capable of directing the rotating arm to angle the media delivery device thereby elevating the contact portion from the lower position to a lift-up position for disengaging the at least one media.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: August 21, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chang-Hsiu Wu
  • Patent number: 8231121
    Abstract: A paper tray of printer is provided, which includes a paper tray body, a slide shaft, a first pick arm, a second pick arm and a paper width guide. The first pick arm is fixed on the slide shaft, and the second pick arm is slidely disposed on the slide shaft. The paper width guide is disposed on the paper tray body and is connected to the second pick arm through a linkage device to drive the second pick arm, so that a position of the second pick arm varies along with a position of the paper width guide. Accordingly, an interval between the first pick arm and the second pick arm can be varied along with a size of a paper, so as to avoid paper skew when the paper is fed.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: July 31, 2012
    Assignee: Kinpo Electronics, Inc.
    Inventor: Chih-Hwa Wang
  • Patent number: 8226081
    Abstract: A paper tray of printer is provided, which includes a paper tray body, a slide shaft, a first pick arm, a second pick arm and a paper width guide. The first pick arm is fixed on the slide shaft, and the second pick arm is slidely disposed on the slide shaft. The paper width guide is disposed on the paper tray body and is connected to the second pick arm through a linkage device to drive the second pick arm, so that a position of the second pick arm varies along with a position of the paper width guide. Accordingly, an interval between the first pick arm and the second pick arm can be varied along with a size of a paper, so as to avoid paper skew when the paper is fed.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: July 24, 2012
    Assignee: Kinpo Electronics, Inc.
    Inventor: Chih-Hwa Wang