Patents by Inventor Yasuo Niikura

Yasuo Niikura 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: 20200307945
    Abstract: A fold-enforcing assembly includes a fold-enforcing device, a moving device to move the fold-enforcing device in a direction of a fold of a sheet bundle, and control circuitry. The fold-enforcing device includes a pressing member pair to nip and press the fold of the sheet bundle in a direction of thickness, a pressing mechanism to pressurize and depressurize the pressing member pair, and a driver to drive the pressing mechanism. Controlled by the control circuitry, the moving device moves the fold-enforcing device in accordance with a size of the sheet bundle in the direction of the fold; pressing mechanism pressurizes the pressing member pair to press a first end portion of the sheet bundle in the direction of the fold; the moving device moves the fold-enforcing device to a second end portion of the sheet bundle; and pressing mechanism depressurizes the pressing member pair in the second end portion.
    Type: Application
    Filed: March 5, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuuta MORI, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki MISHINA, Kenji HARI, Hisayoshi SUGAWARA, Yuusuke SHIBASAKI
  • Publication number: 20200307944
    Abstract: A binding device includes a stacking device configured to receive sheets, a sheet alignment member configured to align the sheets on the stacking device, a binder configured to bind the sheets on the stacking device, a binder moving device configured to move the binder, and a retreat device configured to retreat the sheet alignment member from a range of movement of the binder. The retreat device retreats the sheet alignment member in response to a pressing force acting on the sheet alignment member in a direction of movement of the binder.
    Type: Application
    Filed: March 6, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuusuke SHIBASAKI, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki MISHINA, Kenji HARI, Yuuta MORI, Hisayoshi SUGAWARA
  • Publication number: 20200307936
    Abstract: A sheet stacking apparatus includes an ejector, a stacker, a wall, and an upper surface detector. The ejector ejects a sheet, and the stacker stacks the sheet ejected from the ejector. The wall contacts a trailing end of the sheet ejected from the ejector in an ejection direction to align the sheet. The upper surface detector detects an upper surface on a trailing end side of the sheet stacked on the stacker in the ejection direction. When the sheet moves toward the wall, the upper surface detector moves from a home position in which the upper surface detector detects the upper surface of the sheet to a retracted position in which the upper surface detector does not contact the sheet moving toward the wall.
    Type: Application
    Filed: March 4, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd
    Inventors: Hisayoshi SUGAWARA, Kei SASAKI, Junya SUZUKI, Koji FURUTA, Yasuo NIIKURA, Kazuki Mishina, Kenji Hari, Yuuta Mori, Yuusuke Shibasaki
  • Patent number: 10513404
    Abstract: A sheet-material supply device includes a lift, a sheet-material detector, and a sheet-material retaining conveyor. The lift elevates sheet materials in a stacked state. The sheet-material detector detects that an uppermost sheet material of the sheet materials in the stacked state has reached a predetermined height. The sheet-material retaining conveyor retains and conveys the uppermost sheet material that has reached the predetermined height. The sheet-material supply device stops elevation of the sheet materials in the stacked state when the sheet-material detector detects that the uppermost sheet material has reached the predetermined height. The sheet-material retaining conveyor is disposed to be movable in a direction in which the sheet materials in the stacked state elevate.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 24, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takeshi Akai, Hidehiko Fujiwara, Yasuo Niikura, Yousuke Edo, Satoru Takano, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Patent number: 10494207
    Abstract: A sheet feeding device comprises a bottom plate, an auxiliary tray and a tilt table. The bottom plate is configured to move along a vertical axis. The auxiliary tray is disposed on the bottom plate. The tilt table includes a lower table disposed on the bottom plate, an upper table rotatably connected to the lower table at one end of the upper table by a pivot, and a resilient member disposed between the upper table and the lower table, the resilient member configured to press the upper table upward. The auxiliary tray and the upper table are configured to receive and hold sheets in a stack.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventor: Yasuo Niikura
  • Patent number: 10384897
    Abstract: A sheet-member separation device includes a first air blower, an attractor, a conveyor, a second air blower, and an adjuster. The first air blower blows air onto a front side of a stack of sheet members in a sheet-member conveyance direction. The attractor attracts an uppermost sheet member floated from the stack of sheet members by the air blown from the first air blower. The conveyor conveys, in the sheet-member conveyance direction, the sheet member attracted by the attractor. The second air blower blows air toward a lateral side of the sheet member. The adjuster moves the second air blower and the attractor together to adjust positions of the second air blower and the attractor in the sheet-member conveyance direction.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: August 20, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasuo Niikura, Yousuke Edo, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Publication number: 20180346265
    Abstract: A sheet feeding device comprises a bottom plate, an auxiliary tray and a tilt table. The bottom plate is configured to move along a vertical axis. The auxiliary tray is disposed on the bottom plate. The tilt table includes a lower table disposed on the bottom plate, an upper table rotatably connected to the lower table at one end of the upper table by a pivot, and a resilient member disposed between the upper table and the lower table, the resilient member configured to press the upper table upward. The auxiliary tray and the upper table are configured to receive and hold sheets in a stack.
    Type: Application
    Filed: May 25, 2018
    Publication date: December 6, 2018
    Inventor: Yasuo NIIKURA
  • Patent number: 10065824
    Abstract: A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yousuke Edo, Yasufumi Takahashi, Yasuo Niikura, Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa, Hiroshi Komuro, Masaru Yamagishi, Toshihiro Shimada, Satoshi Aizawa, Kenji Ishii
  • Patent number: 10017342
    Abstract: A paper sheet conveyance device includes a plurality of conveyance members and conveys a paper sheet while performing temporary stop of conveying and then restart of conveying. Two paper sheets sequential in a conveyance direction stop together in a state of the temporary stop, driving a first transfer member to which a preceding first paper sheet that is one of the two paper sheets is opposed and a second conveyance member to which a following second paper sheet that is the other paper sheet is opposed is stopped and restarted synchronously for the temporary stop and the restart. A stop position information acquisition unit acquires information on a position on the conveyance path at which the second paper sheet stops in the state of the temporary stop, and a timing for stopping the conveying after the conveying is restarted is controlled according to the acquired information.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: July 10, 2018
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Toshihiro Okutsu, Masaki Ishizaki, Yasuo Niikura, Hidetoshi Kojima, Masato Hashimoto, Munehisa Fuda, Tatsuya Sugawara, Kohjiroh Haga, Kiyotake Nakamura, Hideaki Takahashi, Takashi Fukumoto
  • Patent number: 10017340
    Abstract: A sheet conveyance apparatus includes: a placement part configured such that stacked sheets are disposed on the placement part; a housing including an open/close part and accommodating the placement part, at least a portion of the open/close part being configured to be opened and closed; and a suction unit connected with the housing, and configured to draw gas from an interior of the housing.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 10, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Matsuoka, Yasuo Niikura, Yousuke Edo, Satoru Takano, Yasunori Hino, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Patent number: 9802775
    Abstract: A sheet separating device includes: a lifting nozzle configured to blow air against an end portion of a sheet bundle placed on a sheet loading portion to lift sheets; a separating nozzle configured to separate the sheets; a lifting-nozzle shutter member configured to open and close the lifting nozzle; a separating-nozzle shutter member configured to open and close the separating nozzle; a lifting-shutter driving mechanism configured to drive the lifting-nozzle shutter member; a separating-shutter driving mechanism configured to drive the separating-nozzle shutter member; and an open/close control unit configured to control the lifting-shutter driving mechanism and the separating-shutter driving mechanism such that the lifting-nozzle shutter member and the separating-nozzle shutter member are opened or closed simultaneously.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: October 31, 2017
    Assignee: Ricoh Company, Limited
    Inventors: Masato Hashimoto, Takashi Fukumoto, Hideaki Takahashi, Hisayoshi Sugawara, Munehisa Fuda, Yasuo Niikura, Masaki Ishizaki, Kiyotake Nakamura, Hidetoshi Kojima, Toshihiro Okutsu, Kazunori Konno, Tatsuya Sugawara, Kohjiroh Haga
  • Patent number: 9796552
    Abstract: A paper feeding apparatus includes: a sheet loading unit for loading a bundle of sheets; a separation unit that separates a topmost sheet of the bundle of sheets loaded on the sheet loading unit, from the bundle of sheets; a conveyance unit that conveys the separated topmost sheet; an end fence that is movable in a sheet conveyance direction, abuts trailing ends in the sheet conveyance direction, and positions the bundle of sheets in the sheet conveyance direction; and a pressing unit that is provided in such a manner as to protrude from the end fence, and is able to press the trailing ends in the sheet conveyance direction of at least an upper part of the bundle of sheets, wherein the pressing unit has different pressing forces at an upper and a lower portion thereof, and has the lower pressing force stronger than the upper pressing force.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: October 24, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Takashi Fukumoto, Yasuo Niikura, Hidetoshi Kojima, Hideaki Takahashi, Munehisa Fuda, Hisayoshi Sugawara, Kiyotake Nakamura, Kazunori Konno, Tatsuya Sugawara, Toshihiro Okutsu, Kohjiroh Haga
  • Patent number: 9725265
    Abstract: Provided are a floating restricting member restricting the floating position of a bundle of sheets; and a holding mechanism holding the floating restricting member relative to a side fence. The floating restricting member includes a sheet contact section being brought into contact with the sheets from above; and a sheet-floating restricting section restricting the floating position of the floating sheet that is floated while air is blown thereto. The holding mechanism sets the floating restricting member in the initial state where the sheet-floating restricting section restricts the floating position of the sheet, in the sheet-placing time retracted state where the sheets are pushed against the sheet contact section so that the floating restricting member is retracted, and in the sheet-ejecting time retracted state where, when the sheets are to be removed, the sheet is pushed against the sheet contact section from below so that the floating restricting member is retracted.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: August 8, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Masato Hashimoto, Takashi Fukumoto, Hideaki Takahashi, Hisayoshi Sugawara, Munehisa Fuda, Yasuo Niikura, Masaki Ishizaki, Kiyotake Nakamura, Hidetoshi Kojima, Toshihiro Okutsu, Kazunori Konno, Tatsuya Sugawara, Kohjiroh Haga
  • Publication number: 20170174462
    Abstract: A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 22, 2017
    Inventors: Yousuke EDO, Yasufumi TAKAHASHI, Yasuo NIIKURA, Satoru TAKANO, Hidehiko FUJIWARA, Takeshi AKAI, Yasunori HINO, Tadashi MATSUOKA, Atsunori YOSHIDA, Ryo KANNO, Hikaru FUKASAWA, Hiroshi KOMURO, Masaru YAMAGISHI, Toshihiro SHIMADA, Satoshi AIZAWA, Kenji ISHII
  • Publication number: 20170174454
    Abstract: A sheet conveyance apparatus includes: a placement part configured such that stacked sheets are disposed on the placement part; a housing including an open/close part and accommodating the placement part, at least a portion of the open/close part being configured to be opened and closed; and a suction unit connected with the housing, and configured to draw gas from an interior of the housing.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 22, 2017
    Inventors: Tadashi MATSUOKA, Yasuo NIIKURA, Yousuke EDO, Satoru TAKANO, Yasunori HINO, Atsunori YOSHIDA, Ryo KANNO, Hikaru FUKASAWA
  • Publication number: 20170174453
    Abstract: A sheet-material supply device includes a lift, a sheet-material detector, and a sheet-material retaining conveyor. The lift elevates sheet materials in a stacked state. The sheet-material detector detects that an uppermost sheet material of the sheet materials in the stacked state has reached a predetermined height. The sheet-material retaining conveyor retains and conveys the uppermost sheet material that has reached the predetermined height. The sheet-material supply device stops elevation of the sheet materials in the stacked state when the sheet-material detector detects that the uppermost sheet material has reached the predetermined height. The sheet-material retaining conveyor is disposed to be movable in a direction in which the sheet materials in the stacked state elevate.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 22, 2017
    Inventors: Takeshi AKAI, Hidehiko FUJIWARA, Yasuo NIIKURA, Yousuke EDO, Satoru TAKANO, Yasunori HINO, Tadashi MATSUOKA, Atsunori YOSHIDA, Ryo KANNO, Hikaru FUKASAWA
  • Publication number: 20170174458
    Abstract: A sheet-member separation device includes a first air blower, an attractor, a conveyor, a second air blower, and an adjuster. The first air blower blows air onto a front side of a stack of sheet members in a sheet-member conveyance direction. The attractor attracts an uppermost sheet member floated from the stack of sheet members by the air blown from the first air blower. The conveyor conveys, in the sheet-member conveyance direction, the sheet member attracted by the attractor. The second air blower blows air toward a lateral side of the sheet member. The adjuster moves the second air blower and the attractor together to adjust positions of the second air blower and the attractor in the sheet-member conveyance direction.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 22, 2017
    Inventors: Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasuo Niikura, Yousuke Edo, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
  • Publication number: 20170081140
    Abstract: A paper feeding apparatus includes: a sheet loading unit for loading a bundle of sheets; a separation unit that separates a topmost sheet of the bundle of sheets loaded on the sheet loading unit, from the bundle of sheets; a conveyance unit that conveys the separated topmost sheet; an end fence that is movable in a sheet conveyance direction, abuts trailing ends in the sheet conveyance direction, and positions the bundle of sheets in the sheet conveyance direction; and a pressing unit that is provided in such a manner as to protrude from the end fence, and is able to press the trailing ends in the sheet conveyance direction of at least an upper part of the bundle of sheets, wherein the pressing unit has different pressing forces at an upper and a lower portion thereof, and has the lower pressing force stronger than the upper pressing force.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Takashi FUKUMOTO, Yasuo NIIKURA, Hidetoshi KOJIMA, Hideaki TAKAHASHI, Munehisa FUDA, Hisayoshi SUGAWARA, Kiyotake NAKAMURA, Kazunori KONNO, Tatsuya SUGAWARA, Toshihiro OKUTSU, Kohjiroh HAGA
  • Patent number: 9561927
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 7, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
  • Patent number: 9540193
    Abstract: A paper feeding apparatus includes: a sheet loading unit for loading a bundle of sheets; a separation unit that separates a topmost sheet of the bundle of sheets loaded on the sheet loading unit, from the bundle of sheets; a conveyance unit that conveys the separated topmost sheet; an end fence that is movable in a sheet conveyance direction, abuts trailing ends in the sheet conveyance direction, and positions the bundle of sheets in the sheet conveyance direction; and a pressing unit that is provided in such a manner as to protrude from the end fence, and is able to press the trailing ends in the sheet conveyance direction of at least an upper part of the bundle of sheets, wherein the pressing unit has different pressing forces at an upper and a lower portion thereof, and has the lower pressing force stronger than the upper pressing force.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 10, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Takashi Fukumoto, Yasuo Niikura, Hidetoshi Kojima, Hideaki Takahashi, Munehisa Fuda, Hisayoshi Sugawara, Kiyotake Nakamura, Kazunori Konno, Tatsuya Sugawara, Toshihiro Okutsu, Kohjiroh Haga