Control Of Separator Responsive To Sensing Of Sheet Patents (Class 271/110)
  • Patent number: 9454864
    Abstract: A stack of valuable media for separation within deposit module are inserted into a feeder module. A force sensor regularly receives force readings as the stack of notes are depleted and a pressure paddle is regularly adjusted to maintain a constant and optimal amount of force on the stack of notes using the force readings.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: September 27, 2016
    Assignee: NCR Corporation
    Inventors: Vincent Quijano, Gervil Villarosa, Carlo B. Granaderos
  • Patent number: 9388003
    Abstract: A sheet conveying apparatus includes a restricting portion provided on a second roller side with respect to a sheet conveying path and near a nip portion. This restricting portion is configured such that a first abutment portion is positioned on the second roller side from a straight line connecting a point protruding most to the sheet conveying path of the restricting portion and the nip portion in a state in which a second abutment portion is in contact with a surface of a first sheet as a rotary member rotates in a predetermined direction by the first abutment portion being pushed by the first sheet.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: July 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuko Harada, Daisuke Aoki, Atsushi Murakami
  • Patent number: 9388005
    Abstract: A sheet conveying apparatus including: a locking member having an abutment surface abutting a sheet to correct skew feed of the sheet; a holding member configured to hold the locking member to rotate from a waiting position when the locking member is pushed by the sheet; a roller pair configured to nip the sheet abutting the abutment surface; a first urging portion configured to urge the holding member to the waiting position; a movable support portion configured to support the locking member in a manner that the locking member is located a retracted position where the locking member contacts a surface of the sheet and allows the sheet to pass; and a second urging portion configured to urge the locking member to a position where the abutment surface abuts a succeeding sheet.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: July 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoichiro Iizuka
  • Patent number: 9382083
    Abstract: A sheet conveying apparatus includes a moving member, and a sensor detecting the sheet based on the move of the moving member. The moving member moves in a direction approaching a first position from a second position before a rear end of the sheet passes through the moving member after moving from the first position to the second position by being pressed by the sheet.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: July 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Taisuke Hyodo
  • Patent number: 9340379
    Abstract: A feeding device includes a loading unit for loading a sheet, a feeding roller section that has a shaft member on which a first roller and a second roller are disposed, and that feeds the sheet, and a holding member that holds the feeding roller section such that the first and second rollers are moved to a contact position where the first and second rollers are in contact with the sheet loaded on the loading unit and a separate position where the first and second rollers are separated from the sheet loaded on the loading unit. When the width of the sheet is less than or equal to a predetermined length, the first roller is in contact with the sheet whereas the second roller is not in contact with the sheet. The loading unit has a hole provided at a position opposite to the second roller.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: May 17, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Kiuchi
  • Patent number: 9266691
    Abstract: A paper feed apparatus includes a paper feeding portion that sends-out a paper placed in a paper placing tray, and is used in an image forming apparatus such as a multifunction machine. The paper feed apparatus comprises a first regulating portion and a second regulating portion that are arranged in the vicinity of a downstream side of a paper feeding position by the paper feeding portion. The first regulating portion is arranged outside a second width paper passage area to regulate a movement of a first width paper such as A4 paper placed in the paper placing tray toward a feeding direction. On the other hand, the second regulating portion is arranged inside the second width paper passage area to regulate a movement of a second width paper such as a name card placed in the paper placing tray toward a feeding direction.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: February 23, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yasumasa Morimoto
  • Patent number: 9242823
    Abstract: A sheet detecting apparatus including: a detection unit including a lever member having an abutment surface abutting a conveying sheet and a holding member configured to hold the lever member, the detection unit moved by the lever member pushed by the sheet; a first urging portion configured to urge the holding member to a waiting position after the sheet is separated from the abutment surface; a support portion configured to support the lever member movable with respect to the holding member to move the lever member to a retracted position for allowing the sheet to pass the lever member contacting a surface of the sheet when the holding member is in the waiting position; and a second urging portion configured to urge the lever member so that the lever member is moved from the retracted position to a position in which the abutment surface abuts a succeeding sheet.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: January 26, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoichiro Iizuka
  • Patent number: 9221636
    Abstract: A conveying device includes: a conveyor for conveying a sheet; a path defining member having a first conveying surface that guides the sheet; and a sensor device for sensing the sheet. The sensor device includes: a sensor casing provided on the path defining member and including a second conveying surface that guides the sheet and a main wall whose outer surface is exposed from the path defining member and contiguous to the first conveying surface; a movable member including (i) a contact portion projecting to a second-conveying-surface side of the main wall through an opening formed in the main wall and (ii) a sensed portion located in the sensor casing and moved by the sheet conveyed on the second conveying surface while contacting the contact portion; and a signal output device, provided in the sensor casing, for sensing the sensed portion to output a signal related to its position.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: December 29, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasuhira Ota, Masao Mimoto, Iwane Sano, Keisuke Wakakusa, Jie Xiu, Noriyuki Kawamata, Shingo Ito
  • Patent number: 9022385
    Abstract: A sheet ejection apparatus includes an ejection unit, a thickness detection unit, a thickness storage unit, a sheet detection unit, an acquisition unit, a setting unit, and an adjustment unit. The ejection unit ejects a sheet. The thickness detection unit measures a thickness of the sheet. The thickness storage unit stores thickness information. The acquisition unit acquires a thickness of a preceding sheet. The setting unit sets a gap between the preceding sheet and the sheet in accordance with the thickness of the preceding sheet. The adjustment unit adjusts timing for supplying the sheet to a conveyance path in accordance with the gap.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: May 5, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshiki Nakano
  • Publication number: 20150108710
    Abstract: An image forming apparatus and a method of controlling the same capable of obtaining the same effect as when sheets of paper are picked up in such a state that front ends thereof are all aligned by controlling paper feeding based on results of detecting paper movement and capable of improving feeding speed by maintaining a time taken for the sheet of paper to move to a feed roller constant are provided. The apparatus includes a pick-up roller to pick up a sheet of paper, a forward roller to feed the picked-up sheet of paper toward a downstream side of a paper moving path, a feed roller to feed the sheet of paper fed by the forward roller toward the downstream side of the paper moving path, and a feed sensor mounted between the forward roller and the feed roller to detect movement of the sheet of paper.
    Type: Application
    Filed: September 17, 2014
    Publication date: April 23, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae Wuk LEE, Je Won Jeong, Sang Cheol Kim, Jin Soo Lee
  • Publication number: 20150102551
    Abstract: A detection apparatus includes a rotating member which rotates in a rotation direction from a standby posture by being pushed by a conveyed sheet, a sensor of which an output is changed as the rotating member rotates from the standby posture, an elastic member which elastically applies a force to the rotating member in a direction opposite to the rotation direction, a first abutting portion which abuts onto the rotating member applied by a force by the elastic member to maintain the rotating member in the standby posture, and a regulation unit which allows the rotating member to rotate in the rotation direction by being pushed by the conveyed sheet and regulates the rotating member not to rotate in the rotation direction by a repulsion force when the rotating member rotated in the opposite direction by an elastic force of the elastic member abuts onto the first abutting portion.
    Type: Application
    Filed: September 12, 2014
    Publication date: April 16, 2015
    Inventor: Satoshi Koga
  • Publication number: 20150091243
    Abstract: The pickup roller is placed above a lifting plate made of a flexible material and feeds the sheet with abutting on an upper surface of the sheets loaded on the lifting plate. The sensor detects an arrival of the sheet fed by the pickup roller on a downstream side of the pickup roller. The abnormality detection unit detects the sheet feeding abnormality of the sheet fed by the pickup roller based on the drive start time of the pickup roller and the time sheet detection by the sensor. The abnormality detecting condition correction unit corrects the abnormality detecting condition of the abnormality detection unit depending on the amount of sheets on the lifting plate.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 2, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yuya KOBAYASHI, Hideyuki TERAMOTO, Masayuki MOCHIZUKI
  • Publication number: 20150084267
    Abstract: A sheet feeding apparatus includes a stacking portion on which a sheet is stacked, a drive source configured to generate a driving force, a pick-up member rotatable with the driving force and configured to rotate in contact with the stacked sheet to feed the sheet, a feed member configured to feed the sheet fed by the pick-up member, an elevating unit configured to raise and lower the stacking portion with the driving force to bring the sheet and the pick-up member into contact with each other, and a control unit configured to control the elevating unit, when a trailing edge of a first sheet fed to the pick-up member is upstream of the feed member and downstream of the pick-up member, to bring a second sheet stacked on the stacking portion and to be fed subsequently to the first sheet and the pick-up member into contact with each other.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventor: Kazuhiro Hosohara
  • Publication number: 20150061212
    Abstract: The first remaining amount holding unit stores the remaining amount of sheet detected by the remaining amount detection unit before a sheet adding operation to the sheet stacking surface. The second remaining amount holding unit stores the remaining amount of sheet detected by the remaining amount detection unit after the sheet adding operation to the sheet stacking surface. The determination unit determines a sheet adding position based on the respective remaining amount of sheet stored in the first remaining amount holding unit and the second remaining amount holding unit. The feeding speed control unit changes a sheet feeding speed of the pickup roller based on the sheet adding position determined by the determination unit and the sheet remaining amount detected by the remaining amount detection unit.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 5, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Tsukasa SUGIYAMA
  • Publication number: 20150042031
    Abstract: A media processing device executes a retard preparation operation that moves a separation roller and a paper return lever at a desired time even when the moving mechanism that moves a separation roller and a paper return lever together, and the conveyance mechanism that conveys the medium, share a common drive source. A printer has a moving mechanism that executes a retard preparation operation that moves the paper return lever and separation roller in conjunction with each other. Drive power from the conveyance motor is transferred to the moving mechanism. The printer also has a trigger lever that can move between an interference position physically interfering with the moving mechanism and preventing the retard preparation operation from starting, and an actuator that moves the trigger lever from the interference position to a non-interference position.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 12, 2015
    Applicant: Seiko Epson Corporation
    Inventors: Hiroyasu Fukazawa, Ryuji Moriyama, Yuta Ichimiya, Chikako Akahane
  • Publication number: 20150028535
    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: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventor: Yasumasa MORIMOTO
  • Publication number: 20150021846
    Abstract: Provided are a device and method for controlling a paper interval in a paper feeder of an image forming apparatus, and an image forming apparatus including the device. The device includes: a leading edge sensor configured to detect a leading edge of a sheet of paper when the sheet of paper is picked up and fed as a printing medium; a feed unit configured to accelerate the sheet of paper; and a control unit. If the sheet of paper arrives late at a paper sensing position of the leading edge sensor, the control unit measures a travel time during which the sheet of paper is fed to the paper sensing position, and according to the measured travel time, the control unit varies a time point at which the sheet of paper starts to be accelerated.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-bok Lee, Sang-cheol Kim, Taiichi Ominami, Jin-soo Lee
  • Publication number: 20150014914
    Abstract: Provided are an auto document feeder (ADF), a scanner including the ADF, and a method of controlling auto document feeding. The ADF includes: a feed unit picking up a sheet of paper and carrying the sheet of paper to a scan unit; a feed control unit controlling the feed unit; and a retry control unit. If a sheet of paper is not normally picked up by the feed unit, the retry control unit decreases a speed of a motor driving the feed unit or increases a current supplied to the motor for picking up the sheet of paper. Therefore, although sheets of paper are not normally fed when a user intends to use various kinds of sheets of paper with the ADF, the retry control unit may stabilize feeding of the feeding of the sheets of paper. Thus, efficient, convenient, and high-quality paper feeding may be possible.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Byung-jun SUNG
  • Publication number: 20150001786
    Abstract: A sheet feeding roller 101 which feeds a sheet stacked on a sheet supporting plate 110 capable of being lifted and lowered is supported by a support portion as being linearly movable in an up-and-down direction, and a roller biasing member applies a force to the support portion in a direction in which the sheet feeding roller is pressed to s sheet stacked on the sheet supporting plate. A biasing direction 101b of the sheet feeding roller due to the roller biasing member is set within a range between a normal line of the sheet feeding roller at the upstreammost pressing position against the sheet feeding direction and a normal line of the sheet feeding roller at the downstreammost pressing position out of the pressing positions where the sheet feeding roller is pressed to the sheet as being varied in accordance with a sheet stacking state of the sheets.
    Type: Application
    Filed: June 25, 2012
    Publication date: January 1, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Kosuga
  • Patent number: 8876105
    Abstract: A remaining amount detector measures beforehand a distance H where there is one sheet. A motor displaces a lifting plate to a paper-feeding position upon storing paper in the feeding unit. The remaining amount detector measures a distance y1 to the lower face of a paper stack. Thereafter, upon transport of paper from the stack, a control unit causes the remaining amount detector to measure a distance y2 for every predetermined number n of fed sheets. A remaining sheet calculation unit calculates a displacement y1?y2=?y to the bottom of the paper stack S, and calculates the thickness of one sheet on the basis of the displacement ?y and the number n of fed sheets (t=?y/n). The remaining sheet calculation unit divides the thickness (H?y2) of the paper stack by the thickness t of one paper sheet, and calculates the number of remaining sheets m as (m=((H?y2)/t)+1).
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 4, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Akizou Ohtani, Fujio Tabata
  • Publication number: 20140319755
    Abstract: Methods for picking a following sheet of media before the prior sheet of media has been detected exiting a media input tray in an imaging apparatus to increase media throughput. The methods may further include processes for shifting an image area to a shingled sheet of media without having to stop the imaging process.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 30, 2014
    Applicant: Lexmark International, Inc.
    Inventors: Yusef Hassan Alaas, Kevin Dean Schoedinger
  • Patent number: 8861051
    Abstract: A roller assembly includes a roller shaft, a roller base and at least one roller. The roller shaft defines at least one clipping slot. The roller shaft passes rearward through the roller base to rotatably mount the roller base to the roller shaft. An inside of the roller base extends forward to form an elastic arm. A free end of the elastic arm projects beyond a front surface of the roller base. The free end of the elastic arm defines a hook portion hooked in the clipping slot to restrain the roller base on the roller shaft. The roller is set around the roller base. When the roller assembly is disassembled, press down upon the free end of the elastic arm to make the hook portion project out of the clipping slot, so that the roller base together with the rollers is disassembled from the roller shaft.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: October 14, 2014
    Assignee: Foxlink Image Technology Co., Ltd.
    Inventors: Hung Ming Chang, Che Pin Hung
  • Publication number: 20140284871
    Abstract: A sheet conveying apparatus according to one aspect of the present disclosure includes a roller drive portion, a first drive portion, a restriction member, a second drive portion, and a drive control portion. Restriction member contacts with rear end of sheet surface, in conveying direction, of uppermost sheet in sheet stack stored in sheet storage portion to restrict feeding of sheet from sheet storage portion. Drive control portion controls roller drive portion, first drive portion, and second drive portion, and causes opposing member to separate from sheet feed roller, and causes restriction member to contact with sheet surface of second sheet to be conveyed immediately after first sheet, after first sheet located on uppermost position of sheet stack is fed by pickup roller and leading end of first sheet in conveying direction passes through sheet feed nip portion.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 25, 2014
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Nobuhiro Nishioka
  • Patent number: 8827259
    Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet-shaped recording medium; a registration roller pair to convey the recording medium to the image forming unit; a sheet feed roller to convey the recording medium to the registration roller pair; and a controller to control driving of the registration roller pair and the sheet feed roller. In such an image forming apparatus, the controller starts driving of the sheet feed roller to feed the recording medium and stops driving of the sheet feed roller before the sheet feed roller has completed conveyance of the recording medium for a distance equal to a length of the settable minimum-sized recording medium in the conveyance direction.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ikuo Fujii, Takamitsu Ikematsu, Ippei Kimura, Kaoru Tada
  • Publication number: 20140239574
    Abstract: An image recording apparatus, including: a supply tray; a supply roller; a manual tray; a recording device; a motor; a supply driving power transmitter which transmits a reverse driving power of the motor to the supply roller; a conveyance driving power transmitter; a switcher switchable between a first state in which a driving power of the motor is transmitted to the supply driving power transmitter and a second state in which the driving power is not transmitted to the supply driving power transmitter; and a controller configured to, when an image is to be recorded on a sheet placed on the manual tray and when the switcher is in the first state, switches the switcher to the second state and rotates the motor reversely to rotate a conveyor roller in a second rotational direction reverse to a first rotational direction for conveying a sheet in a conveying direction.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Satoru ARAKANE, Yuki MATSUI
  • Publication number: 20140232055
    Abstract: Upon continuous feeding of a plurality of sheets and upon detection of a leading end of a sheet by a detection unit before an elapse of a first time after a start of a paper feed roller, a controller performs control such that a paper conveyance speed of the paper feed roller is set lower than a paper conveyance speed of a registration roller, and the paper feed roller is stopped after conveying the sheet having the leading end detected for a specified conveyance distance before a next timing of starting the registration roller.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 21, 2014
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Akihiro YAMAGATA
  • Patent number: 8783676
    Abstract: A feeding roller, a drive motor configured to drive the feeding roller, a control unit configured to perform one rotation control on the feeding roller, a sheet feeding path curved immediately after the feeding roller, a conveying roller pair provided in the sheet feeding path, and being set to a sheet conveyance speed higher than that of the feeding roller so as to eliminate a loop formed when a sheet passes through the sheet feeding path during one rotation control of the feeding roller; and a ratchet mechanism configured to stop the driving force from the drive motor and cause the feeding roller to be rotated by the sheet conveyed by the conveying roller pair when the feeding roller is pulled by the sheet being conveyed by the conveying roller pair in the course of the one rotation control of the feeding roller are provided.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: July 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yamamoto
  • Patent number: 8773736
    Abstract: An image reading apparatus to convey a sheet to be scanned to an image reader unit is provided. the image reading apparatus includes a sheet tray, in which the sheet to be scanned is stored, a separator, which frictionally picks up the sheet from the sheet tray and conveys the picked-up sheet toward an entry side of the image reader unit, through which the sheet enters a position above the image reader unit, to have a first side of the sheet scanned by the image reader unit, and a resisting force applier, which applies convey-resisting force to the sheet, of which first side has been scanned, being returned to the entry side of the image reader unit to have a second side of the sheet with the convey resistance scanned by the image reader unit.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: July 8, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomohiko Goto
  • Publication number: 20140183811
    Abstract: A sheet feeder control method for controlling a sheet feeder of an image forming apparatus includes feeding a sheet through a sheet feed path exposable to the exterior of the sheet feeder, detecting the feeding of the sheet at at least a first position on the sheet feed path, discharging the fed sheet to the exterior of the sheet feeder, detecting the discharge of the sheet at a second position downstream of the first position in a sheet feeding direction, detecting a sheet jam during the feeding and discharging of the sheet, and if the jammed sheet is detected at the second position but not at the first position, cancelling a malfunction state due to the sheet jam when the sheet stops being detected at the second position, irrespective of whether the sheet feed path is covered or exposed.
    Type: Application
    Filed: December 3, 2013
    Publication date: July 3, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventor: Ryo TAKENAKA
  • Publication number: 20140186059
    Abstract: A sheet conveying apparatus includes a sheet conveyance path, a conveying unit configured to convey a sheet along the sheet conveyance path in a sheet conveying direction, a sensor configured to output a signal dependent on whether the sheet exists at a specific position on the sheet conveyance path, and a control device configured to, when it is determined that a particular condition is satisfied before it is determined that the sheet exists at the specific position, control the conveying unit to convey the sheet, which is being conveyed in the conveying path, until when it is determined that the sheet exists at the specific position, and control the conveying unit to stop conveying the sheet when it is determined that the sheet exists at the specific position.
    Type: Application
    Filed: November 11, 2013
    Publication date: July 3, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Takashi SUZUKI
  • Publication number: 20140183812
    Abstract: A sheet conveying device includes a conveying unit configured to convey a sheet by a first rotating body and a second rotating body that is provided so as to be movable in a contacting/separating direction with respect to the first rotating body; a rotation amount measuring unit configured to measure a rotation amount of the second rotating body, the rotation amount measuring unit being provided so as to be movable in the contacting/separating direction along with the second rotating body; and a conveying distance calculating unit configured to calculate a conveying distance of the sheet based on a measurement result obtained by the rotation amount measuring unit.
    Type: Application
    Filed: November 21, 2013
    Publication date: July 3, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventor: Masanori TAKAYASU
  • Publication number: 20140175731
    Abstract: A sheet conveyance apparatus conveys a sheet without imposing a load on a drive unit due to the bend of the sheet when the sheet is conveyed from one unit to the other, and when the sheet is conveyed by a second conveyance unit and a first conveyance unit, a first control unit controls a first drive motor and a second control unit controls a second drive motor to make a sheet conveyance speed of the first conveyance unit equal to or higher than that of the second conveyance unit.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 26, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Okawa
  • Publication number: 20140167347
    Abstract: A sheet transport device includes a sheet supporting surface which receives a plurality of sheets set thereon, a separation roller which separates the sheets set on the sheet supporting surface sheet by sheet to transport a separated sheet in a predetermined transport direction, and a first detection unit which is disposed to the supporting surface and detects whether a sheet is set on the sheet supporting surface. The separation roller and the first detection unit are disposed to be separated at least in a sheet width direction orthogonal to the predetermined transport direction, and a distance between the first detection unit and an end edge of the separation roller at a side of the first detection unit is longer than a short side of a non-allowable sheet which is smaller than a minimum sheet size within an allowable transport range set in the sheet transport device.
    Type: Application
    Filed: September 26, 2013
    Publication date: June 19, 2014
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventor: Takashi Fujiwara
  • Patent number: 8737903
    Abstract: A method and apparatus for forming an image determine if printing paper is properly picked up, and printing data is transferred to an intermediate transfer belt (ITB). When it is sensed that the printing paper is not properly picked up, picking up the printing paper is retried considering a revolution cycle of the ITB. Thus, the frequency of errors can be decreased, and a user's convenience can be increased because picking up the printing paper is automatically retried whenever mis-pick up occurs instead of displaying an error. Further, wasting of toner is decreased.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-woo Son, Cheol-ju Yang
  • Publication number: 20140125004
    Abstract: A paper conveying device includes an intermediate transfer member and a paper conveying member driven so as to rotate at the same rotational speed, and an adjusting device. On an outer peripheral surface of the intermediate transfer member, an elastic layer is provided. An axes distance between the intermediate transfer member and the paper conveying member is adjusted by the adjusting device so that drive torque for rotating the intermediate transfer member and the paper conveying member at the same rotational speed becomes smaller than a target set value. Accordingly, occurrence of the shear is suppressed without changing a rotational speed ratio of rollers arranged opposite to each other.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 8, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Takeshi MAEYAMA, Hirofumi Nakagawa
  • Publication number: 20140117611
    Abstract: An image forming apparatus includes a transport roller; a reading mechanism; a manuscript sensor configured to detect the manuscript; a transport controller which controls the transport roller; a display unit; and a display controller. The display controller is configured such that the display unit is allowed to display a first screen in a case that the manuscript is not detected by the manuscript sensor; and the display unit is allowed to display a second screen indicating a discharge designator to discharge the manuscript from the image forming apparatus in place of the first screen indicating no discharge designator in a case that the manuscript is detected by the manuscript sensor. The transport controller is configured such that the manuscript interposed by the transport roller is discharged without reading the manuscript by the reading mechanism in a case that an input with respect to the discharge designator is accepted.
    Type: Application
    Filed: September 30, 2013
    Publication date: May 1, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Daisuke KASAMATSU
  • Publication number: 20140110899
    Abstract: An image forming apparatus according to an embodiment comprises a feed guide forming a feed path of a sheet and having an end portion movable between a closed position and an open position by rotating around a shaft, wherein the end portion is positioned above the shaft when the feed guide is in the open position, and the feed guide is configured to provide access for removal of a jammed sheet when in the open position. The image forming apparatus further comprises a holding unit configured to releasably hold the end portion of the feed guide in the open position.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Tetsuya SATO, Kazutoshi TAKAHASHI
  • Publication number: 20140103600
    Abstract: A sheet feeding device including: a sheet feeding roller configured to convey a sheet; a placing portion on which the sheet is configured to be placed; a moving unit configured to move the placing portion toward the sheet feeding roller; a separation pad to which a leading end of the conveyed sheet is configured to abut at a contact position; a separation roller configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad; and a separation assistant member provided between the sheet feeding roller and the separation roller and configured to change a distance between the nip position and the contact position according to a basis weight of the sheet by coming into contact with the sheet.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 17, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Naoyuki IWATA
  • Publication number: 20140103601
    Abstract: A sheet conveyer, including a first roller to rotate to convey a sheet in a conveying direction; a separator arranged to be opposed to the first roller and configured to nip the sheet and to separate the sheet from other sheets; a multiple sheet sensor arranged in a downstream position with respect to the first roller and configured to sense presence of multiple sheets, the multiple sheet sensor including an emitter and a receiver; and a second roller arranged in a downstream position with respect to the multiple sheet sensor and configured to convey the separated sheet, is provided. A component being at least one of the emitter and the receiver is arranged in an outer side position with respect to the separator, and at least a part of the component is arranged in an inner side position with respect to the second roller.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 17, 2014
    Inventor: Daisuke Nakayama
  • Patent number: 8695963
    Abstract: A feeding device includes a feeding unit configured to be driven while being in contact with a recording sheet to feed the recording sheet, and a stacking unit configured to stack a plurality of the recording sheets and to press or release the stacked recording sheets to or from the feeding unit. Also, the feeding device includes a separating unit configured to separate the plurality of recording sheets fed by the feeding unit, one by one, a detecting unit configured to detect the recording sheet in an area downstream of the separating unit, and a control unit configured to control each of the units. The control unit switches a feeding operation between at least two feeding operations in accordance with a drive time of the feeding unit from when the feeding unit is started to be driven to when the detecting unit detects the recording sheet.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hisashi Taniguchi
  • Patent number: 8693009
    Abstract: A rotation amount detecting device for a rotation body includes: a first rotation body having a first surface; a second rotation body having a second surface formed of a material different from that of the first surface and contacting the first surface, and rotating with rotation of the first rotation body; a first support member rotatably supporting the first rotation body at a first position and supporting thereof to be swingable around a first axis at a position different from the first position; a second support member rotatably supporting the second rotation body at a second position and supporting thereof to be swingable around a second axis provided at a position different from the second position, the second axis being the first axis or an axis in the first support member other than the first axis; and a detector that detects a rotation amount of the second rotation body.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: April 8, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takao Furuya, Yoshinari Iwaki, Minoru Ohshima, Michio Taniwaki
  • Publication number: 20140077442
    Abstract: The present invention is to provide a printing apparatus capable of correctly detecting an origin of a conveying roller for conveying a print medium at the time of its rotation with a simple configuration that does not accompany an increase of cost. For this purpose, the printing apparatus is equipped with a lock mechanism (a lock link lever) for stopping rotation of the conveying roller at a predetermined rotational position and saves a count value of a rotation amount of the conveying roller when the conveying roller is locked by the lock mechanism concerned as origin information. After this, driving of the conveying roller is controlled based on the saved origin information and a phase of rotation of the conveying roller obtained from the count value of the conveying roller.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroyuki Saito, Takaaki Ishida
  • Publication number: 20140070481
    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: Application
    Filed: June 25, 2012
    Publication date: March 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Kosuga
  • Publication number: 20140042690
    Abstract: A sheet feeder including a sheet container on which sheets are placed, a transfer roller to transfer the sheets to an image forming unit via a transfer path; a friction pad to transfer the sheets together with the transfer roller; and a movable portion provided on the transfer path to alter a direction of the transfer path based on the sheets.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Inventor: Hiroyuki SEKI
  • Patent number: 8636284
    Abstract: A sheet conveyer, including a first roller to rotate to convey a sheet in a conveying direction; a separator arranged to be opposed to the first roller and configured to nip the sheet and to separate the sheet from other sheets; a multiple sheet sensor arranged in a downstream position with respect to the first roller and configured to sense presence of multiple sheets, the multiple sheet sensor including an emitter and a receiver; and a second roller arranged in a downstream position with respect to the multiple sheet sensor and configured to convey the separated sheet, is provided. A component being at least one of the emitter and the receiver is arranged in an outer side position with respect to the separator, and at least a part of the component is arranged in an inner side position with respect to the second roller.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 28, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Daisuke Nakayama
  • Publication number: 20140015192
    Abstract: A sheet thickness detector incorporated in an image forming apparatus includes a sheet conveying member to rotate and convey a sheet in a sheet conveyance direction, a driven sheet conveying member to contact the sheet conveying member and form at least one first transfer nip therebetween in a lateral direction and to displace by an amount equivalent to a thickness of the sheet passing through the first transfer nip and rotated with the sheet conveying member in the sheet conveyance direction, a displacement member to contact the sheet conveying member and form a second transfer nip smaller than the first transfer nip in the lateral direction and to displace by an amount equivalent to the thickness of the sheet passing through the second transfer nip and supported at a support member, and a displacement amount detector to detect an amount of displacement of the displacement member.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 16, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuu WAKABAYASHI, Ryo TAKENAKA, Masashi SATOH, Shingo NISHIZAKI, Yusuke OZAKI, Yuji IKEDA, Hiroshi OKAMURA, Naohiro FUNADA, Tomohide KONDOH
  • Patent number: 8608155
    Abstract: A printing apparatus and a printing method with the object of preventing the feed of a sheet that is not the feeding target when performing sheet re-feeding.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 17, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Tetsuji Yatsunami, Yoshikane Tsuchihashi, Akinobu Nakahata
  • Patent number: 8594837
    Abstract: A mailpiece feed device designed to be mounted upstream from a franking machine, and comprising at least a mailpiece feed zone for receiving a stack of mailpieces of various formats supported by a first plurality of drive rollers and a separation zone for individually selecting the mailpieces and having a second plurality of drive rollers, at least first clutch means E3 being provided for actuating said first plurality of drive rollers, said mailpiece feed device further comprising at least one sensor CN for detecting passage of said mailpieces as they enter said separation zone, and control means for subjecting said first clutch means to forced deactivation followed by an activation/deactivation series so long as the sensor CN is not activated, so as to cause a rapid succession of horizontal movements generating jerky motion on said stack, conducive to facilitating mutual separation of said mailpieces.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 26, 2013
    Assignee: Neopost Technologies
    Inventor: Dominique Mazeiller
  • Patent number: 8582125
    Abstract: In one embodiment, a structure comprises a pliable sheet and first and second stationary supports extending along and supporting the sheet. The supports are oriented relative to one another such that a distance between the supports at one part of the sheet is greater than a distance between the supports at another part of the sheet. In another embodiment, a sheet media input structure comprises a sheet media supporting surface and a media sheet separator downstream from the supporting surface along a media path that extends from the supporting surface to and along the separator. The separator is configured to separate a top sheet on the stack from a next-to-top sheet in the stack by resisting the movement of sheets along the media path and the degree of resistance varies along the length of the separator.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: November 12, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Tom Ruhe, Jiangxiao Mo
  • Patent number: 8573585
    Abstract: A non-transitory storage medium is disclosed herein. An example of the non-transitory storage medium includes instructions that, when executed by a processor, cause the processor to actuate a pick assembly of a media handling system to select a sheet of medium from a media stack and lower the media stack a predetermined amount and subsequently raise the media stack the predetermined amount upon failure to pick the sheet of medium from the media stack. The non-transitory storage medium may include additional instructions as disclosed herein. A media handling system and method of media handling are also disclosed herein.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 5, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Peter J Boucher, Garrett Clinton Waycaster, Andrzei Romanski, Mark D Lund