To Control Gripper-couple Moving Sheet To Alignment Patents (Class 271/228)
  • Patent number: 10392213
    Abstract: A sheet conveying device, which is included in an image forming apparatus, includes a sheet holding roller to move while holding a sheet, a detector to perform a primary detection to detect a sheet position before the sheet holding roller holds the sheet and a secondary detection to detect a sheet position downstream from the sheet position detected by the primary detection, and a controller configured to cause the sheet holding roller to perform a first drive to move the sheet holding roller in at least one direction of a width direction of the sheet and a rotation direction in a sheet conveying surface based on a result of the primary detection and a second drive to move the sheet holding roller opposite to the at least one direction of the first drive, based on a result of the secondary detection.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 27, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiromichi Matsuda, Katsuaki Miyawaki, Tetsuo Watanabe, Jun Yamane, Hideyuki Takayama
  • Patent number: 10358311
    Abstract: A sheet conveying device, which is incorporated in an image forming apparatus, includes a first detector to detect an angle deviation of a recording medium to a sheet conveying direction, a second detector to detect a lateral shift of the recording medium to a width direction, a third detector to detect at least one of the angle deviation and the lateral shift after correction of the angle deviation detected by the first detector and the lateral shift detected by the second detector, and a rotary body to perform a primary movement by (1) rotating in the sheet conveying direction and returning to a reference position and by (2) moving in the width direction and returning to the reference position, and a secondary movement by performing at least one of (1) and (2) after the primary movement.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: July 23, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Jun Yamane, Hiromichi Matsuda, Katsuaki Miyawaki, Koichi Kudo, Tetsuo Watanabe, Toshihiro Okamoto, Hideyuki Takayama, Atsuyuki Oyamada
  • Patent number: 10358308
    Abstract: A sheet feeding apparatus, including: a pair of sheet feeding rollers; a pair of conveyance rollers; and a controller, wherein when a first condition regarding a sheet position is fulfilled in the sheet feeding, the controller makes one of the first conveyance roller and the second conveyance roller move in a direction opposite to the other conveyance roller and when a second condition regarding the sheet position is fulfilled in the sheet feeding, the controller makes the one conveyance roller move in a direction toward the other conveyance roller.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 23, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasuo Shiokawa, Takahiro Okubo
  • Patent number: 10087025
    Abstract: An image forming apparatus performs skew correction by bringing a leading end of a conveyed sheet in contact with a registration roller pair being in a stopped state and by forming a first loop with a loop roller pair, and thereafter, refeeds the sheet to an image former by adjusting timing. In a case of feeding a sheet with a length equal to or longer than a prescribed length, after having formed the first loop, the image forming apparatus forms a second loop in a loop accommodator that is disposed on an upstream side than the loop roller pair and accommodates a formed loop.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: October 2, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shinobu Konno, Yuki Yamauchi
  • Patent number: 10079948
    Abstract: According to detection results of a plurality of original document detectors, an image reading apparatus determines whether or not correcting skew of an original document is possible, controls a pair of a plurality of transport rollers in a case where it is determined that correcting the skew of the original document is possible, and corrects the skew of the original document by making transporting speeds of the pair of the plurality of transport rollers different from each other.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 18, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Naito, Hiroshi Kusuda, Takefusa Ogata, Katsuji Ichimaru, Kenji Fukuta, Terumi Tsuda
  • Patent number: 10059545
    Abstract: A roller-type lateral force generation device includes a roller, a first plate, a second plate, a connection plate, a first spring, a rotation shaft, a second spring, a fixing element and an adjustment element. The connection plate is disposed along a set direction, which is perpendicular to a paper-feeding direction. The first spring is disposed between the first plate and a first shaft portion of a roller shaft of the roller. The second spring is disposed between the second plate and a second shaft portion of the roller shaft. The adjustment element has a limitation plate perpendicular to the first plate. The limitation plate has a limitation groove. The first shaft portion is penetrated through the limitation groove. The set direction and the connection line of the rotation shaft and the roller shaft have an angle larger than 0 degree. A lateral force is generated, thereby avoiding paper squeezing inward.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: August 28, 2018
    Assignee: TECO IMAGE SYSTEMS CO., LTD.
    Inventor: Chien-Min Chen
  • Patent number: 9988226
    Abstract: A paper conveying apparatus and an image forming apparatus are described which can appropriately convey a sheet when the sheet is restarted after forming a loop. The paper conveying apparatus includes a conveying roller pair in the upstream side of a loop roller pair, a stepping motor for rotationally driving the conveying roller pair, and a processor for controlling rotation of the stepping motor by controlling pulse signals and excitation current supplied to the stepping motor. This processor halts rotation of the conveying roller pair by stopping output of the pulse signals when loop formation of the sheet is completed, and switches the excitation current to a lower current value which is lower than a reference current value at which excitation is turned on.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: June 5, 2018
    Assignee: Konica Minolta, Inc.
    Inventors: Satoshi Hamaya, Mikihiro Yamakawa
  • Patent number: 9971291
    Abstract: A media path moves media sheets from a media supply, a print engine receives the media sheets from the media path, and a sensor detects a characteristic related to the media sheets. A drive nip continuously moves the media sheets, and a stall nip receives the media sheets from the drive nip. The stall nip is positioned less than the length of one of the media sheets from the drive nip. The stall nip alternately stops or moves the media sheets while the drive nip continuously moves the media sheets, as controlled by a controller, to cause the media sheets to buckle between the drive nip and the stall nip. The controller controls when to stop or move the media sheets to constantly vary the size of the buckle, and thereby make the buckle relatively larger for a first characteristic and make the buckle relatively smaller for a different characteristic.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: May 15, 2018
    Assignee: Xerox Corporation
    Inventors: Lakshmi Sujatha Yaramsetti, Veena Kumari Saluja, Colin William Robert Hewitt, Philip James Hambridge, Julius Cardozo, Timothy David Jonathan Spink
  • Patent number: 9938101
    Abstract: A sheet transport device includes a transport path along which a sheet is transported in one direction; a sheet butting portion provided at one side of the transport path; a sheet rotating section; and a sheet butting section. When a short sheet is transported along the transport path, the sheet rotating section rotates the short sheet such that a leading end is directed to the other side of the transport path, and when a long sheet is transported, the sheet rotating section rotates the long sheet such that an angle of inclination with respect to the one direction is reduced. The sheet butting section moves the short sheet rotated by the sheet rotating section toward the one side to make the side edge of the short sheet butt against the sheet butting portion, while allowing the long sheet to pass therethrough without moving the long sheet toward the one side.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: April 10, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kiyoshi Watanabe, Yuta Chino, Junji Hagihara, Toshitaka Tanaka, Tatsuya Yamashita
  • Patent number: 9933742
    Abstract: An image forming apparatus includes: a conveying portion configured to convey a continuous recording medium in a first conveying direction or in a second conveying direction opposite to the first conveying direction; an image forming portion configured to form a toner image on the continuous recording medium at a transfer nip; a fixing portion provided on a lower stream side of the image forming portion in the first conveying direction and configured to heat and fix the toner image formed on the continuous recording medium, at a fixing nip; a retaining portion provided between the transfer nip and the fixing nip in the first conveying direction and configured to retain a part of the continuous recording medium; and a control portion configured to control the conveying portion to convey a passed portion that has passed through the fixing nip and control the retaining portion to retain the passed portion.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: April 3, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventor: Takashi Yamada
  • Patent number: 9868604
    Abstract: A banknote drive arrangement adjacent a banknote inlet repositions and drives a banknote into a banknote processing pathway for validation. The drive arrangement includes two drive rollers preferably spaced either side of a longitudinal axis of the pathway and adjacent to the banknote inlet. Each drive roller is separately controlled to allow different rotational speeds thereof (and forward and rearward movement Of a banknote) to allow shifting of a received end portion of a banknote before receiving the entire length of the banknote. This arrangement is preferably used with a sensing arrangement for sensing misalignment of an inserted banknote and if sensed, using the different rotational speeds to correct misalignment and preferably center a banknote in the processing pathway.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: January 16, 2018
    Assignee: Crane Canada Co.
    Inventors: Dmytro Repetyuk, Sergiy Androsyuk, Vitold Khvostov, Roman Davydovskiy
  • Patent number: 9769353
    Abstract: An image reading apparatus includes a light source and a movable light reflecting surface provided to be capable to move to a first position to reflect light from the light source. The image reading apparatus includes a cam to move the light reflecting surface and having a first portion, a driving module for providing a driving force, and a transmission member for rotating the cam with the driving force provided by the driving module, the transmission member having a second portion, wherein the transmission member moves the light reflecting surface to a predetermined position by rotating the cam, and by bringing the second portion into contact with the first portion to hold the light reflecting surface at the predetermined position when there is no driving force.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: September 19, 2017
    Assignee: PFU Limited
    Inventor: Shogo Yoshita
  • Patent number: 9738474
    Abstract: An orientation correcting device includes a first transporting unit that nips and transports a sheet; a detecting unit that detects a tilt of the sheet that is transported by the first transporting unit; a second transporting unit that nips and transports the sheet that has been transported by the first transporting unit; a flexure forming unit that, with the second transporting unit stopped, forms a flexure in the sheet as a result of causing the sheet that is transported by the first transporting unit to strike against the second transporting unit; and a moving unit that, with the second transporting unit stopped and the flexure formed in the sheet by the flexure forming unit, moves the second transporting unit in a crossing direction that crosses a transport direction of the sheet in accordance with an amount and a direction of the sheet tilt detected by the detecting unit.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: August 22, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takehiko Koizumi, Takuyoshi Kimura, Hiroyuki Momiyama, Ryuga Oishi
  • Patent number: 9671739
    Abstract: A sheet-conveying device has a guide member that constitutes a sheet-conveying route, a plurality of rollers and a control portion that performs a sheet-position correction operation. The plurality of rollers is provided at plural portions of the guide member. Each roller projects from the guide member, contacts a sheet and rotates together with the conveyance of the sheet. The control portion searches the roller(s) 6 arranged at positions that may contact the end surface of the sheet along the width direction thereof in the register fluctuation operation to produce positional information of the roller(s) to be escaped. The control portion escapes the roller(s) specified by the positional information of the roller(s) to be escaped before a register fluctuation operation starts.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 6, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Mikihiro Yamakawa
  • Patent number: 9637338
    Abstract: A paper sheet transport apparatus (10) includes transport member that is slidable along the widthwise direction of a transport path (11) (e.g., a drive roller (36) and a driven roller (38)), and a paper sheet detection unit (inlet-side paper sheet detection sensor (70)) that is arranged on an upstream side of the transport member in the paper sheet transport direction along the transport path (11) and detects the position of the paper sheet in the widthwise direction of the transport path (11). A control unit (80) calculates an amount of movement of the transport member based on the position of the paper sheet in the widthwise direction of the transport path (11) detected by the paper sheet detection unit and a previously set predetermined position of the paper sheet in the widthwise direction of the transport path (11).
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: May 2, 2017
    Assignee: GLORY LTD.
    Inventor: Takanori Nakai
  • Patent number: 9617099
    Abstract: A paper medium recognition device according to one embodiment of the present invention includes: a main body that provides a transportation path in which an alignment reference line for aligning a paper medium is arranged on one side; and an alignment unit which has a transportation roller which transports the paper medium in the longitudinal direction along the transportation path, and which has an alignment roller that is arranged in the direction orthogonal to the transportation roller so as to transport the paper medium in the width direction toward the alignment reference line. A phase difference is provided during the rotation of the transportation roller and the alignment roller, and thus the paper medium can be alternately transported in the longitudinal direction and width direction.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 11, 2017
    Assignee: NAUTILUS HYOSUNG INC.
    Inventors: Chul Won Jang, Yun Seok Jeong
  • Patent number: 9592984
    Abstract: An image forming apparatus includes: a first conveyance section disposed on an upstream side of the image formation position in a sheet conveyance direction of the long sheet, and configured to convey the long sheet to the image formation position; a second conveyance section disposed on a downstream side of the image formation position in the sheet conveyance direction, and configured to convey the long sheet on which the toner image is formed; a displacement detection section configured to detect displacement of the long sheet in a sheet width direction; and a control section configured to move the first conveyance section in the sheet width direction to orient the long sheet in the sheet width direction, and move the second conveyance section in a direction identical to a direction along which the first conveyance section is moved based on a detection result of the displacement detection section.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: March 14, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Taizou Oonishi
  • Patent number: 9557701
    Abstract: An image forming apparatus comprises a conveyance roller, a register roller, a sensor, a movable section, and a control section. The conveyance roller conveys a sheet. The register roller is arranged downstream of the conveyance roller along a sheet conveyance path. The sensor detects a deflection amount of the sheet when the sheet is pressed against the register roller. The movable section is connected to at least one end part of the conveyance roller. The control section controls the movable section to move the at least one end of the conveyance roller based on the deflection amount detected by the sensor, to tilt a rotational axis of the conveyance roller relative to a rotational axis of the register roller.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: January 31, 2017
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Shinji Maruyama
  • Patent number: 9517907
    Abstract: A sheet conveying apparatus includes first and second rotator pairs, a moving member including an abutment portion against which a front end of the sheet conveyed by the first rotator pair abuts and a guide member provided at upstream, in the sheet conveying direction, of a nip portion of a second rotator pair. The guide member configured to be movable to a first position where the guide member guides the sheet toward the moving member in a projection state and to a second position away from the moving member more than the first position and turns to the second position during when the sheet is conveyed by the second rotator pair.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: December 13, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taku Nishikawa, Miho Kaiga
  • Patent number: 9382091
    Abstract: The present sheet processing apparatus determines whether or not a received job includes a setting for executing an alignment process, and if the alignment process is set to be executed, performs control to execute the alignment process.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: July 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuka Masuyama
  • Patent number: 9340385
    Abstract: A skew correction apparatus includes a first roller pair configured to nip a sheet to convey the sheet, a second roller pair provided upstream of the first roller pair and configured to nip the sheet and convey the sheet, a contact portion provided downstream of the first roller pair and configured to come in contact with a leading edge of the sheet conveyed with the first roller pair to correct a skew of the sheet, and a separation mechanism configured to set the second roller pair to a separated state before the skew of the sheet conveyed downstream with the first roller pair is corrected.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: May 17, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kohei Deno
  • Patent number: 9296582
    Abstract: A transport apparatus includes: a guide surface which extends in a transport direction for transporting a medium and which is configured to guide the medium to be transported; a first roller which is a driving roller for transporting the medium; a second roller which is a driven roller arranged to face the first roller; and a roller support member which rotatably supports the second roller and which is configured to be pivotable about a support shaft perpendicular to an axis of a rotational shaft of the second roller between a first position and a second position.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: March 29, 2016
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Masayuki Okumura
  • Patent number: 9221637
    Abstract: A sheet conveyance mechanism in the present disclosure has a feeding portion, a pair of registration rollers, a first sensor, a second sensor, and a conveyance control portion. The feeding portion has a drive roller. The registration rollers are disposed in a downstream side of the feeding portion. The first and second sensors detect presence of a sheet. If after a sheet is detected by the first sensor, the sheet is not detected by the second sensor by a time when a first period elapses, the conveyance control portion starts a slowdown of a rotation speed of the drive roller. If the sheet is detected by the second sensor by a time when a second period elapses after the slowdown of the rotation speed of the drive roller starts, the conveyance control portion returns the rotation speed of the drive roller to a rotation speed before the slowdown.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: December 29, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Takuro Murata, Masayuki Kakuta
  • Patent number: 9201367
    Abstract: An image forming apparatus comprising a conveyance path of recording material comprises a door, when opened, the inside of the apparatus is exposed, and an interlock circuit which detects opening/closing state of the door. The detection unit of the door is arranged on the conveyance path. At the arranged position, the image forming apparatus comprises a registration sensor for detecting presence and absence of the recording material and delivery sensor. The CPU controls pressure to the recording material S passing the fixing nip portion formed by a pair of rollers arranged on the conveyance path. Also, the CPU decides whether the recording material exists at the fixing nip portion based on the respective detection result from the registration sensor and the delivery sensor.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: December 1, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazunori Miyake
  • Patent number: 9071712
    Abstract: An image forming apparatus includes a sheet feed portion configured to feed a sheet, an image forming portion configured to form an image on the sheet, a first conveying path configured to guide the sheet fed from the sheet feed portion such that the sheet passes through the image forming portion, a second conveying path configured to guide the sheet on which the image has been formed on one surface thereof by the image forming portion to the first conveying path again, a document feed portion configured to feed a document to the second conveying path, an image reading portion configured to read an image of the document fed by the document feed portion, and a control portion configured to control the sheet feed portion and the document feed portion such that the document and the sheet are conveyed on the second conveying path in a sequence in which the document and the sheet are mixed in a case where an operation of forming images respectively on both surfaces of a plurality of sheets overlaps with an operati
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: June 30, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazushi Ino, Ichiro Yasumaru, Atsushi Ogata, Daisuke Kaneko, Tomoyuki Iwakoshi, Masaru Aoki, Hiroshi Kato
  • Publication number: 20150115526
    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: Application
    Filed: October 22, 2014
    Publication date: April 30, 2015
    Inventors: Yuko Harada, Daisuke Aoki, Atsushi Murakami
  • Patent number: 8998201
    Abstract: A sheet retention device is provided for retaining at least one sheet. The sheet retention device comprises a sheet supporting unit for supporting at least a first portion of the sheet, a rotatable guiding unit configured to enclose a second portion of the sheet, an urging unit and a drive unit for in operation controllably rotating the rotatable guiding unit. The rotatable guiding unit comprises a passageway arranged through the rotatable guiding unit, which passageway is configured to enclose the second portion of the sheet, the passageway having an entrance portion at one side of an outer surface of the rotatable guiding unit and an exit portion at another side of an outer surface of the rotatable guiding unit. The exit portion is arranged in the passageway at an opposite end with respect to the entrance portion.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: April 7, 2015
    Assignee: Oce-Technologies B.V.
    Inventors: Albert W. T. Rademakers, Mark Rietbergen
  • Patent number: 8998200
    Abstract: A medium feeding device includes a feeding roller that conveys a medium in a conveying direction, and a brake roller that includes rollers that are arranged to be rotatable around one shaft and cause a conveyance load to act on the medium that has entered between the feeding roller and the rollers. The rollers are arranged to press the feeding roller with a predetermined pressure. The medium feeding device further includes a rotational difference generating unit that generates a rotational difference between the rollers so that the conveyance load acting on the medium by the rollers becomes even.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 7, 2015
    Assignee: PFU Limited
    Inventor: Satoru Moto
  • Publication number: 20150084273
    Abstract: A sheet conveying apparatus including: a cover that is provided in an apparatus main body in an openable and closable manner to open a sheet conveying path through which the sheet is conveyed, by rotating in an open direction from a closed position; a guide member that is movably provided in the cover and forms the sheet conveying path; and a moving portion that is provided with a contact portion coming into contact with the sheet conveyed through the sheet conveying path, and is movably provided in the guide member; wherein the guide member moves with respect to the cover by rotating the cover in the open direction from the closed position, and thereby the moving portion moves by its own weight in a direction in which the contact portion of the moving portion is retracted from the sheet conveying path.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 26, 2015
    Inventor: Yasuhiro Shimoi
  • Patent number: 8985578
    Abstract: A sheet aligning device may include a sheet conveyance path; a detecting unit configured to detect a side edge of a sheet being conveyed in the sheet conveyance path; a stopper on an upstream side of the detecting unit and configured to open/close so as to allow/prevent passage of the sheet and to position a leading edge of the sheet; a first conveying unit on an upstream side of the stopper, the first conveying unit including a pair of first rollers configured to come in contact with/separate from each other; a second conveying unit on an upstream side of the first conveying unit, the second conveying unit including a pair of second rollers configured to come in contact with/separate from each other; and a horizontal movement unit configured to move the pair of first rollers in an axial direction based on a detection result output by the detecting unit.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: March 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Muneyasu, Junji Shirakawa, Yutaka Shoji, Takeshi Watanabe
  • Patent number: 8985577
    Abstract: A sheet conveyor device includes a registration roller, an intermediate roller, a first sheet detection section, a first drive controller, a second drive controller, and a third drive controller. The registration roller conveys a sheet toward an image forming section for image formation. The intermediate roller conveys the sheet toward the registration roller. The first sheet detection section is used for optically detecting the sheet between the registration roller and the intermediate roller. The first drive controller drives the intermediate roller, while suspending driving of the registration roller. The second drive controller drives the registration roller when a predetermined conveyance wait period elapses from detection of a sheet by the first sheet detection section. The third drive controller drives the registration roller when a predetermined forced conveyance period elapses from a start of conveyance of the sheet loaded on a sheet loading section.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: March 24, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Masaaki Maruta
  • Publication number: 20150071692
    Abstract: A sheet conveying device, which is incorporated in an image forming apparatus, includes a sheet holding and conveying roller pair having two rollers to convey a sheet while holding the sheet between the two rollers at a nip where the two rollers contact each other, and a gate member disposed movable with rotation of the sheet holding and conveying roller pair to correct skew of the sheet in a sheet conveying direction when a leading end of the sheet in the sheet conveying direction abuts against the gate member. The gate member has a contact surface against which the sheet abuts. The contact surface of the gate member is disposed upstream from the nip of the sheet holding and conveying roller pair in the sheet conveying direction. A setting position of the contact surface is adjusted according to thickness of the sheet.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 12, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kazuya MARUTA, Kohsuke YOSHIDA
  • Patent number: 8953231
    Abstract: Provided is a document reading apparatus capable of suppressing a shock that may occur when a trailing edge of a tabbed sheet passes through a roller pair. In an image reading section, when a document to be read is the tabbed sheet, a timing to start separation of the roller pair in response to detection of a trailing edge of the document is delayed by a time period corresponding to a tab length with respect to the timing to start separation when a document other than the tabbed sheet is conveyed. Thus, it is possible to prevent the shock when the trailing edge of the tabbed sheet passes through the roller pair, and to thereby suppress image reading failure due to the shock.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Asahiro Nakayoshi, Kenji Morita, Yohei Katto, Akiko Kanno, Hidenori Sunada, Satoshi Seki
  • Patent number: 8944433
    Abstract: A device for handling notes of value including a transport unit for transport of the notes of value in a transport direction along a transport path, and an aligning unit for alignment of the notes of value. The device further includes a sensor arranged upstream of the aligning unit for determining at least one feature of the notes of value, and a control unit that controls the aligning unit such that the aligning unit aligns each note of value depending on the determined expression of the feature of the note of value in a preset first target alignment or at least in a preset second target alignment that is different from the first target alignment.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: February 3, 2015
    Assignee: Wincor Nixdorf International GmbH
    Inventors: Christian Fehrenbach, Hendrik Hoeschen, Udo Petermann, Paul Freitag, Richard Duesterhus
  • Patent number: 8929800
    Abstract: Provided is an image forming apparatus including an image forming unit with a plurality of developing devices, a sheet transport unit, a sheet position measurement unit that measures a position of the sheet during the transport in a direction crossing a sheet passage, a displacement correction unit that moves the sheet during the transport in the sheet-passage crossing direction to correct a displacement of the sheet, and a control unit that carries out the displacement correction for the sheet by the displacement correction unit for the measured sheet depending on the measurement result by the sheet position measurement unit if the developing device located on a upstream side is used, and carries out position correction for an image and reduces an interval of the image formation for each sheet if the developing device located on the upstream side is not used.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: January 6, 2015
    Assignee: Konica Minolta, Inc.
    Inventor: Masatoshi Hitaka
  • Patent number: 8910936
    Abstract: When a bill is inserted into the bill acceptor, sensor components sense the insertion of bill, bill-pressing roller set of bill transmission mechanism is driven to press bill, bill-transfer roller set is driven to transfer bill the bill-pressing roller set is released from the bill, and step motors of alignment correction unit are controlled to move correction devices toward each other to align the bill with the center line of bill passage subject to a predetermined number of steps. If the resistance force from bill is larger than the thrust force produced during rotation of step motors, utilize the step loss status of step motors and enable transmission devices to move correction devices away from bill when the rotation of step motors reaches the predetermined number of steps, and then enable bill-pressing roller set to press bill again and then enable bill-transfer roller set to transfer bill.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: December 16, 2014
    Assignee: International Currency Technologies Corporation
    Inventors: Ming-Hua Tsou, Shao-Kai Chang, Fong-Cheng Wei
  • Publication number: 20140361483
    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: Application
    Filed: January 31, 2013
    Publication date: December 11, 2014
    Inventor: Yoichiro Iizuka
  • Patent number: 8905401
    Abstract: The present device includes a conveying path, a contact member coming in contact with the front of a printing medium to stop the conveyance of the medium, a hold member holding the front of the medium having contacted with the contact member, a first conveying unit conveying the medium so as to abut the contact member to form slack on the medium between itself and the hold member holding the medium, and a second conveying unit being provided nearer to the hold member than the first conveying unit in the conveying direction and conveying the medium so as to abut the contact member to form the slack. The second conveying unit is movable so that a part thereof existing on the side where the slack is formed on the medium in the conveying path is moved to the outside of the conveying path.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: December 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Toshihiro Nakagaki
  • Patent number: 8888093
    Abstract: A threshold for detecting a position of a lateral edge of a sheet is more accurately determined, whereby the accuracy of detection of the lateral edge position of the sheet is improved. A line sensor includes a plurality of element blocks. Each element block includes a plurality of pixels. The threshold for detecting the lateral edge position is determined based on a light level and a dark level of signals output from an element block that is actually used to detect the lateral edge position of the sheet.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichiro Ino
  • Patent number: 8892023
    Abstract: An image forming apparatus acquires an amount of deflection of the transporting sheet from a reference position thereof and calculates a required shift amount of the sheet. It determines whether or not the sheet is shifted frontward. If so, the image forming apparatus acquires a second specified shift value which is determined based on an urging force and the required shift amount using a second correction equation. Alternatively, if the sheet is shifted backward, the image forming apparatus acquires a first specified shift value which is determined based on the urging force and the required shift amount using a first correction equation. The image forming apparatus performs a registration roller shift correction based on the acquired first or second specified shift value.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yusuke Kawanago, Takahiro Okubo, Masahiro Matsuo, Yoshiteru Kawakami, Haruki Motegi, Osamu Yoshimura, Kunihiro Kawachi, Ken Nonaka
  • Patent number: 8882106
    Abstract: A post-processing apparatus which enable reduction of shift alignment time and improvement of productivity. A shift unit performs a shifting operation for shifting a conveyed sheet, in a lateral direction orthogonal to a sheet conveying direction. An alignment unit aligns the sheet by a pair of alignment members thereof which are moved toward each other such side edges of the sheet in the lateral direction are held therebetween. A CPU of a finisher controller controls the alignment unit and the shift unit such that an operation for moving the alignment members from respective first standby positions in the lateral direction to respective second standby positions closer to the sheet than the corresponding first standby positions is executed in parallel with the shifting operation by the shift unit.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: November 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromasa Maenishi, Takashi Yokoya
  • Publication number: 20140319763
    Abstract: A sheet conveyor device includes a registration roller, an intermediate roller, a first sheet detection section, a first drive controller, a second drive controller, and a third drive controller. The registration roller conveys a sheet toward an image forming section for image formation. The intermediate roller conveys the sheet toward the registration roller. The first sheet detection section is used for optically detecting the sheet between the registration roller and the intermediate roller. The first drive controller drives the intermediate roller, while suspending driving of the registration roller. The second drive controller drives the registration roller when a predetermined conveyance wait period elapses from detection of a sheet by the first sheet detection section. The third drive controller drives the registration roller when a predetermined forced conveyance period elapses from a start of conveyance of the sheet loaded on a sheet loading section.
    Type: Application
    Filed: April 14, 2014
    Publication date: October 30, 2014
    Applicant: KYOCERA DOCUMENTS SOLUTIONS, INC.
    Inventor: Masaaki MARUTA
  • Publication number: 20140300049
    Abstract: A sheet retention device is provided for retaining at least one sheet. The sheet retention device comprises a sheet supporting means for supporting at least a first portion of the sheet, a rotatable guiding means configured to enclose a second portion of the sheet, an urging means and a drive means for in operation controllably rotating the rotatable guiding means. The rotatable guiding means comprises a passageway arranged through the rotatable guiding means, which passageway is configured to enclose the second portion of the sheet, the passageway having an entrance portion at one side of an outer surface of the rotatable guiding means and an exit portion at another side of an outer surface of the rotatable guiding means. Said exit portion is arranged in the passageway at an opposite end with respect to the entrance portion.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Albert W.T. RADEMAKERS, Mark RIETBERGEN
  • Patent number: 8854056
    Abstract: A system can include an input for receiving objects having a flat shape; a capacitance sensing network comprising a plurality of capacitance sensors positioned to be proximate to the received objects; an operations section coupled to the capacitance sensing network and configured to perform predetermined operations on the objects; and a processor section coupled to receive capacitance sense values from the capacitance sensors and configured to determine the presence and features of received objects, prior to the objects being forwarded to the operations section.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: October 7, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: Akihiro Furuhira, Ryan Seguine
  • Patent number: 8851471
    Abstract: An image forming apparatus includes an image forming device and a sheet adjusting device to adjust a lateral position of the sheet by moving a sheet in a lateral direction perpendicular to a sheet conveyance direction. The sheet adjusting device moves a driving roller in one of a first direction and a second direction for adjusting a lateral position of the sheet between the driving roller and a driven roller and then adjusting a lateral position of the driven roller to the driving roller by moving the driving roller in the second direction until the misaligned driven roller laterally contacts respective stoppers to restrict a range of lateral movement of the driven roller while the sheet is separated from the driving roller and the driven roller and by further moving the driving roller to a predetermined position while the driven roller remains contacting the stoppers.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 7, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Tomoyoshi Yamazaki
  • Patent number: 8851470
    Abstract: A conveying device includes a pair of first nipping rollers configured to be movable in a width direction while nipping a recording medium and rotate to convey the recording medium; a pair of second nipping rollers configured to be movable in the width direction while nipping the recording medium and rotate to convey the recording medium, the pair of second nipping rollers being arranged on an upstream side of the first nipping rollers in a conveying path; and a detecting unit configured to detect an amount of positional deviation in the width direction of the recording medium being conveyed in the conveying path. The pair of first nipping rollers is moved in the width direction based on a detection result of the detecting unit while the pair of first nipping rollers nips the recording medium so that a positional deviation of the recording medium in the width direction is corrected.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: October 7, 2014
    Assignee: Ricoh Company, Limited
    Inventor: Tohru Matsumoto
  • Publication number: 20140291924
    Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus and having a registration roller on the sheet conveyance path through which a sheet conveyed from the first image forming apparatus is conveyed to the second image forming apparatus. The intermediate apparatus has a path opening mechanism configured to release a pressure contact of the registration roller arranged on the sheet conveyance path.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 2, 2014
    Applicant: Konica Minolta, Inc.
    Inventor: Hideo ISOHARA
  • Patent number: 8820738
    Abstract: A sheet conveyance apparatus includes a conveyance roller pair and a mechanism. While following movement of the sheet nipped by the conveyance roller pair, the mechanism moves the conveyance roller pair from a home position, and, in response to a trailing edge of the sheet passing through a conveyance roller pair nip portion, the mechanism returns the pair to the home position. The mechanism includes a movement supporting portion, a cam, a pressing member, and an urging member. The pressing member urges the conveyance roller pair toward the home position by exerting an urging force to the cam. In response to the conveyance roller pair and one of the cam and the pressing member moving in the width direction from the home position, the pressing member exerts the urging force to the cam in a direction reverse to a direction in which the conveyance roller pair has moved.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: September 2, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kouhei Deno
  • Patent number: 8824028
    Abstract: An image reading apparatus includes an image reading unit for reading an image of a document at a reading position, a document feeding unit for discharging the document via the reading position, an abnormality detection unit for detecting a feeding abnormality, and a reading determination unit. The reading determination unit determines that the reading of the image of the fed document by the image reading unit is complete in a case where it is determined that a fed document, which is being fed by the document feeding unit, is not a final document, and it is detected that the leading edge of the fed document has reached the reading position, and when it is detected that the leading edge of the subsequent document has reached the reading position without the abnormality detection unit detecting any abnormality.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: September 2, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Hiroyuki Harada, Shinichi Kimura
  • Patent number: RE46875
    Abstract: A sheet processing apparatus includes an aligning member and a shift conveying unit. The aligning member is movable in a width direction perpendicular to a sheet conveying direction and presses a sheet stack loaded on a sheet processing tray so as to align the sheet stack in the width direction. The unit is provided on the upstream side of the tray and conveys a sheet, shifting the sheet in the width direction. Being shifted by the unit, sheets are loaded at first and second loading positions on the tray. When sheets are loaded at the first loading position, the aligning member is moved to a first standby position corresponding to the first loading position in advance. When sheets are loaded at the second loading position, the aligning member is moved in advance to a second standby position corresponding to the second loading position.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 29, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keiko Fujita, Daisaku Kamiya, Hideki Kushida, Yasuo Fukatsu, Takako Hanada, Takayuki Fujii, Toshiyuki Miyake, Kenichi Hayashi