Patents by Inventor Mamoru Kambayashi

Mamoru Kambayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200165086
    Abstract: A sheet feeding device includes a feeder, a contact member, a movement restricting member, a moving mechanism, and control circuitry. The feeder is configured to feed a sheet. A leading end of the sheet in a feeding direction is to contact the contact member. The movement restricting member is configured to lock the contact member to restrict movement of the contact member from a contact position where the contact member contacts the sheet. The moving mechanism is configured to move the movement restricting member between a locking position and a lock releasing position. The contact member is configured to take the contact position by gravity or a biasing force of a biasing part. The control circuitry is configured to control the moving mechanism to move the movement restricting member to the lock releasing position and then to the locking position when a feeding operation of the sheet is finished.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 28, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Daikai ZAITSU, Rie OHTSUKA, Junichi SUGITA, Mamoru KAMBAYASHI
  • Patent number: 10023423
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to sandwich and press a fold part of a folded sheet bundle between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a position pressed by the pressing unit in a direction of a fold of the sheet bundle. A position pressed by the first pressing member on the sheet bundle and another position pressed by the second pressing member on the sheet bundle are shifted with respect to each other in the direction of the fold of the sheet bundle.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: July 17, 2018
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Keisuke Sugiyama, Kiyoshi Hata, Atsushi Kikuchi, Tomomichi Hoshino, Makoto Hidaka, Shohichi Satoh, Satoshi Saito, Mamoru Kambayashi
  • Patent number: 9718634
    Abstract: A sheet thickness detector incorporated in a sheet conveyor and/or an image forming apparatus includes multiple first rollers aligned in a direction perpendicular to a sheet conveying direction, multiple second rollers facing the respective first rollers, a first roller shaft supporting two first rollers, at least one second roller shaft supporting rollers other than the two first rollers, at least one third roller shaft to support at least three second rollers, a first roller shaft holder supporting the first roller shaft to move from the at least one third roller shaft in a contact/separation direction, a biasing member biasing the first roller shaft toward at least one third roller shaft, and a displacement amount detector detecting an amount of displacement of the first roller shaft. A thickness of a sheet between the first and second rollers is detected based on a detection result by the displacement amount detector.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: August 1, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Mamoru Kambayashi
  • Patent number: 9387643
    Abstract: A sheet processing apparatus comprises a pressing member configured to press a fold line portion of a folded sheet bundle; and moving unit configured to move a position of pressing by the pressing member in a direction of a fold line of the folded sheet bundle, wherein the moving unit is configured to stand by at a pressing start position in which the pressing member is in a non-pressing state, before the folded sheet bundle is conveyed to the pressing member.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: July 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Shohichi Satoh, Makoto Hidaka, Satoshi Saito, Mamoru Kambayashi, Tomomichi Hoshino, Atsushi Kikuchi, Kiyoshi Hata, Keisuke Sugiyama
  • Publication number: 20160115000
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to sandwich and press a fold part of a folded sheet bundle between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a position pressed by the pressing unit in a direction of a fold of the sheet bundle. A position pressed by the first pressing member on the sheet bundle and another position pressed by the second pressing member on the sheet bundle are shifted with respect to each other in the direction of the fold of the sheet bundle.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Applicant: Ricoh Company, Limited
    Inventors: Keisuke SUGIYAMA, Kiyoshi HATA, Atsushi KIKUCHI, Tomomichi HOSHINO, Makoto HIDAKA, Shohichi SATOH, Satoshi SAITO, Mamoru KAMBAYASHI
  • Patent number: 9260268
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to sandwich and press a fold part of a folded sheet bundle between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a position pressed by the pressing unit in a direction of a fold of the sheet bundle. A position pressed by the first pressing member on the sheet bundle and another position pressed by the second pressing member on the sheet bundle are shifted with respect to each other in the direction of the fold of the sheet bundle.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: February 16, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Keisuke Sugiyama, Kiyoshi Hata, Atsushi Kikuchi, Tomomichi Hoshino, Makoto Hidaka, Shohichi Satoh, Satoshi Saito, Mamoru Kambayashi
  • Patent number: 9187287
    Abstract: The present invention is concerning to a sheet processing apparatus comprising: a pressing member configured to press a folding line portion of a sheet bundle being folded; and a moving unit configured to move the pressing member to a folding line direction of the sheet bundle, wherein the pressing member pressurizes a part of the sheet bundle corresponding to a downstream side of a conveyance direction of the sheet bundle.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: November 17, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Atsushi Kikuchi, Kiyoshi Hata, Keisuke Sugiyama, Tomomichi Hoshino, Mamoru Kambayashi, Makoto Hidaka, Satoshi Saito, Shohichi Satoh
  • Patent number: 9181063
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to press a fold in a folded sheet bundle by holding the fold between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a pressing position of the pressing unit in a direction of the fold in the sheet bundle; and a position changing unit configured to change relative positions of the first pressing member and the second pressing member in the direction of the fold in the sheet bundle.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: November 10, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tomomichi Hoshino, Kiyoshi Hata, Keisuke Sugiyama, Atsushi Kikuchi, Mamoru Kambayashi, Makoto Hidaka, Shohichi Satoh, Satoshi Saito, Takao Watanabe, Takuya Sano
  • Patent number: 9050772
    Abstract: A sheet processing apparatus includes: a pressing member that presses a fold part of a bundle of folded sheets so as to perform fold-enhancing; and a moving unit that moves a pressing position of the pressing member in a direction of a fold of the bundle of sheets. The moving unit starts pressing at an area located inside one end of the bundle of sheets while moving at a first velocity, and releases the pressing after passing through other end of the bundle of sheets during a forward movement, and starts pressing at an area located inside the other end of the bundle of sheets while moving at a second velocity that is higher than the first velocity, and passes through the one end of the bundle of sheets during a backward movement.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 9, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Makoto Hidaka, Satoshi Saito, Shohichi Satoh, Mamoru Kambayashi, Tomomichi Hoshino, Atsushi Kikuchi, Kiyoshi Hata, Keisuke Sugiyama
  • Patent number: 9045310
    Abstract: A sheet processing apparatus includes: a folding unit that folds a sheet bundle; a pressing unit that presses a fold part of the sheet bundle, which has been folded by the folding unit, in a thickness direction of the sheet bundle to enhance folding of the fold part; and a moving unit that advances and returns the pressing unit in a width direction of the sheet bundle. The pressing unit starts pressing from a predetermined position in the width direction of the sheet bundle during advancing movement, and releases pressing after going past one end of the sheet bundle. The pressing unit starts pressing from the predetermined position during return movement and goes past the other end of the sheet bundle.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: June 2, 2015
    Assignee: Ricoh Comapny, Limited
    Inventors: Kiyoshi Hata, Keisuke Sugiyama, Atsushi Kikuchi, Tomomichi Hoshino, Mamoru Kambayashi, Shohichi Satoh, Makoto Hidaka, Satoshi Saito
  • Publication number: 20150115516
    Abstract: A sheet processing apparatus comprises a pressing member configured to press a fold line portion of a folded sheet bundle; and moving unit configured to move a position of pressing by the pressing member in a direction of a fold line of the folded sheet bundle, wherein the moving unit is configured to stand by at a pressing start position in which the pressing member is in a non-pressing state, before the folded sheet bundle is conveyed to the pressing member.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 30, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shohichi Satoh, Makoto Hidaka, Satoshi Saito, Mamoru Kambayashi, Tomomichi Hoshino, Atsushi Kikuchi, Kiyoshi Hata, Keisuke Sugiyama
  • Publication number: 20150008640
    Abstract: A sheet thickness detector incorporated in a sheet conveyor and/or an image forming apparatus includes multiple first rollers aligned in a direction perpendicular to a sheet conveying direction, multiple second rollers facing the respective first rollers, a first roller shaft supporting two first rollers, at least one second roller shaft supporting rollers other than the two first rollers, at least one third roller shaft to support at least three second rollers, a first roller shaft holder supporting the first roller shaft to move from the at least one third roller shaft in a contact/separation direction, a biasing member biasing the first roller shaft toward at least one third roller shaft, and a displacement amount detector detecting an amount of displacement of the first roller shaft. A thickness of a sheet between the first and second rollers is detected based on a detection result by the displacement amount detector.
    Type: Application
    Filed: June 5, 2014
    Publication date: January 8, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Mamoru KAMBAYASHI
  • Patent number: 8840103
    Abstract: A sheet conveying device includes: a separation sheet feeding mechanism having a paper feeding belt and a separation roller; and an adjustment mechanism that changes contact state of the paper feeding belt to the separation roller by changing relative position of the paper feeding belt and the separation roller, and changes and adjusts separation performance of the separation roller for the subsequent sheet, wherein the adjustment mechanism includes a cam follower member changing the relative position of the feeding belt and the separation roller, the cam member includes a first cam face and a second cam face which are formed at each rotation radius position in accordance with the rotation angle position, and are spaced apart in the rotation radius direction, and the cam follower member has a contact unit guided by the first cam face and the second cam face.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Takashi Fukumoto, Mamoru Kambayashi, Michitaka Suzuki, Atsushi Fujita, Masataka Fukuchi, Ryuji Yoshida, Hideki Tobinaga, Norio Kimura, Kenichiro Morita, Koki Sakano, Takuya Sano, Takuya Morinaga, Takashi Nakano
  • Publication number: 20140206519
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to press a fold in a folded sheet bundle by holding the fold between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a pressing position of the pressing unit in a direction of the fold in the sheet bundle; and a position changing unit configured to change relative positions of the first pressing member and the second pressing member in the direction of the fold in the sheet bundle.
    Type: Application
    Filed: January 20, 2014
    Publication date: July 24, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Tomomichi HOSHINO, Kiyoshi HATA, Keisuke SUGIYAMA, Atsushi KIKUCHI, Mamoru KAMBAYASHI, Makoto HIDAKA, Shohichi SATOH, Satoshi SAITO, Takao WATANABE, Takuya SANO
  • Publication number: 20140203488
    Abstract: A sheet processing apparatus includes: a pressing member that presses a fold part of a bundle of folded sheets so as to perform fold-enhancing; and a moving unit that moves a pressing position of the pressing member in a direction of a fold of the bundle of sheets. The moving unit starts pressing at an area located inside one end of the bundle of sheets while moving at a first velocity, and releases the pressing after passing through other end of the bundle of sheets during a forward movement, and starts pressing at an area located inside the other end of the bundle of sheets while moving at a second velocity that is higher than the first velocity, and passes through the one end of the bundle of sheets during a backward movement.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 24, 2014
    Applicant: Ricoh Company, Limited
    Inventors: Makoto HIDAKA, Satoshi SAITO, Shohichi SATOH, Mamoru KAMBAYASHI, Tomomichi HOSHINO, Atsushi KIKUCHI, Kiyoshi HATA, Keisuke SUGIYAMA
  • Publication number: 20140203486
    Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to sandwich and press a fold part of a folded sheet bundle between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a position pressed by the pressing unit in a direction of a fold of the sheet bundle. A position pressed by the first pressing member on the sheet bundle and another position pressed by the second pressing member on the sheet bundle are shifted with respect to each other in the direction of the fold of the sheet bundle.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 24, 2014
    Applicant: Ricoh Company, Limited
    Inventors: Keisuke SUGIYAMA, Kiyoshi HATA, Atsushi KIKUCHI, Tomomichi HOSHINO, Makoto HIDAKA, Shohichi SATOH, Satoshi SAITO, Mamoru KAMBAYASHI
  • Publication number: 20140187407
    Abstract: The present invention is concerning to a sheet processing apparatus comprising: a pressing member configured to press a folding line portion of a sheet bundle being folded; and a moving unit configured to move the pressing member to a folding line direction of the sheet bundle, wherein the pressing member pressurizes a part of the sheet bundle corresponding to a downstream side of a conveyance direction of the sheet bundle.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: Ricoh Company, Limited
    Inventors: Atsushi KIKUCHI, Kiyoshi HATA, Keisuke SUGIYAMA, Tomomichi HOSHINO, Mamoru KAMBAYASHI, Makoto HIDAKA, Satoshi SAITO, Shohichi SATOH
  • Patent number: 8755097
    Abstract: An image reading device includes an upstream-side conveying unit configured to convey an original; a reading unit configured to read an image of the original conveyed by the upstream-side conveying unit; and a guide unit arranged between the upstream-side conveying unit and the reading unit to guide the original. As seen from a direction parallel to a reading surface of the reading unit and perpendicular to an original conveying direction in a reading position of the reading unit, an original conveying position for applying a conveying force to the original using the upstream-side conveying unit is arranged in a lower side from the reading position in a direction perpendicular to the reading surface of the reading unit, and the guide unit is configured such that the original passing through the original conveying position is guided to an upper direction.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 17, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Atushi Fujita, Hideki Tobinaga, Takashi Fukumoto, Michitaka Suzuki, Mamoru Kambayashi, Masataka Fukuchi, Kazuki Morita
  • Patent number: 8736926
    Abstract: A sheet conveyance device includes a loading section, a sheet feeding unit, a separation section disposed downstream in a sheet conveyance direction from the sheet feeding unit, a conveyance member to transport a sheet separated by the separation section, a trailing-edge detector disposed at a first conveyance distance (L1) downstream from a separation position (Ab) and including a rotary follower and a rotation detector, a first leading-edge detector disposed downstream from the trailing-edge detector, and a controller. The trailing-edge detector A detects a sheet length in the sheet conveyance direction. The controller causes the sheet feeding unit to start sheet feeding in response to detection of the leading edge of the sheet by the first leading-edge detector when the detected sheet length equals a predetermined reference length and in other cases in response to detection of the trailing edge of the sheet by the trailing-edge detector.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: May 27, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshito Suzuki, Hideki Tobinaga, Atsushi Kanaya, Shinya Kitaoka, Norio Kimura, Mamoru Kambayashi, Michitaka Suzuki, Kenichiro Morita
  • Publication number: 20140084531
    Abstract: A sheet conveying device includes: a separation sheet feeding mechanism having a paper feeding belt and a separation roller; and an adjustment mechanism that changes contact state of the paper feeding belt to the separation roller by changing relative position of the paper feeding belt and the separation roller, and changes and adjusts separation performance of the separation roller for the subsequent sheet, wherein the adjustment mechanism includes a cam follower member changing the relative position of the feeding belt and the separation roller, the cam member includes a first cam face and a second cam face which are formed at each rotation radius position in accordance with the rotation angle position, and are spaced apart in the rotation radius direction, and the cam follower member has a contact unit guided by the first cam face and the second cam face.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 27, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Takashi FUKUMOTO, Mamoru KAMBAYASHI, Michitaka SUZUKI, Atsushi FUJITA, Masataka FUKUCHI, Ryuji YOSHIDA, Hideki TOBINAGA, Norio KIMURA, Kenichiro MORITA, Koki SAKANO, Takuya SANO, Takuya MORINAGA, Takashi NAKANO