Patents by Inventor Keisuke Sugiyama

Keisuke Sugiyama 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).

  • Patent number: 11117763
    Abstract: A sheet processing apparatus includes a sheet conveyor, a processing tool, a tool contact separation device, a tool moving device, and a tool facing device. The sheet conveyor is configured to convey a sheet. The processing tool is configured to perform processing to the sheet. The tool contact separation device is configured to contact and separate the processing tool with respect to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device includes a tool facing portion and a sheet gripper. The tool facing portion includes a rotary member supported by a shaft and is disposed at a position facing the processing tool via the sheet. The sheet gripper includes a rotary member supported by a shaft and is configured to grip the sheet with the tool facing portion.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: September 14, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventor: Keisuke Sugiyama
  • Publication number: 20210039904
    Abstract: A sheet processing apparatus includes a sheet conveyor, a processing tool, a tool contact separation device, a tool moving device, and a tool facing device. The sheet conveyor is configured to convey a sheet. The processing tool is configured to perform processing to the sheet. The tool contact separation device is configured to contact and separate the processing tool with respect to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device includes a tool facing portion and a sheet gripper. The tool facing portion includes a rotary member supported by a shaft and is disposed at a position facing the processing tool via the sheet. The sheet gripper includes a rotary member supported by a shaft and is configured to grip the sheet with the tool facing portion.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Applicant: Ricoh Company, Ltd.
    Inventor: Keisuke SUGIYAMA
  • Publication number: 20210039916
    Abstract: A sheet processing apparatus includes a sheet conveyor configured to convey a sheet, a processing tool configured to perform processing to the sheet, a tool contact separation device, a tool moving device, and a tool facing device. The tool contact separation device is configured to contact and separate the processing tool to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device has an opposing face and is disposed at a position at which the tool facing portion faces the processing tool via the sheet. The tool facing device is configured to move to change the tool facing portion in accordance with a relative moving direction of the sheet with respect to the processing tool when the processing tool performs the processing to the sheet.
    Type: Application
    Filed: July 24, 2020
    Publication date: February 11, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Keisuke SUGIYAMA, Tomohiro FURUHASHI
  • Publication number: 20210039900
    Abstract: A sheet processing apparatus includes a sheet conveyor, a plurality of processing tools, and a tool moving device. The sheet conveyor is configured to convey a sheet. The plurality of processing tools is disposed in a conveyance direction of the sheet and is configured to perform processing to the sheet. The tool moving device is configured to move the plurality of processing tools in an intersecting direction intersecting the conveyance direction of the sheet.
    Type: Application
    Filed: July 24, 2020
    Publication date: February 11, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Takehisa SHIMAZU, Keisuke SUGIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Yuji SUZUKI, Joji AKIYAMA, Yosuke IIDA
  • Patent number: 10807372
    Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 20, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Akai, Hiroshi Fujie, Keisuke Sugiyama, Daisuke Takagi, Hiroki Somada, Manabu Yamanaka
  • Publication number: 20200103811
    Abstract: A drive control device is configured to control a plurality of drive sources configured to drive a single output shaft. The drive control device includes a control unit configured to generate a single drive control signal and transmit the drive control signal to the plurality of drive sources. The drive control device has, as operation modes, a first mode for driving the plurality of drive sources and a second mode for driving a part of the plurality of drive sources.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Keisuke SUGIYAMA, Hidehiko FUJIWARA, Jun YAMADA, Takashi SAITO, Ikuhisa OKAMOTO
  • Publication number: 20190232661
    Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.
    Type: Application
    Filed: January 3, 2019
    Publication date: August 1, 2019
    Inventors: Takeshi AKAI, Hiroshi Fujie, Keisuke Sugiyama, Daisuke Takagi, Hiroki Somada, Manabu Yamanaka
  • 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: 9950886
    Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: April 24, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takehisa Shimazu, Takeshi Akai, Keisuke Sugiyama, Takaya Ochiai
  • Publication number: 20170260015
    Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.
    Type: Application
    Filed: February 24, 2017
    Publication date: September 14, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Takehisa SHIMAZU, Takeshi AKAI, Keisuke SUGIYAMA, Takaya OCHIAI
  • Patent number: 9624061
    Abstract: A sheet processing device includes a sheet processing unit that is moved to perform sheet processing on a sheet; a sheet-processing moving unit that moves the sheet processing unit; a drive-mode determining unit that determines a drive mode of the sheet-processing moving unit; and a drive control unit that drives the sheet-processing moving unit in accordance with the drive mode. The drive-mode determining unit determines the drive mode such that the sheet processing unit is moved at combination acceleration that is a combination of first acceleration and second acceleration with a shift of time that is determined based on the cycle of the natural vibration that occurs during acceleration of the sheet processing unit.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 18, 2017
    Assignee: Ricoh Company, Limited
    Inventors: Shingo Matsushita, Keisuke Sugiyama, Kiyoshi Hata, Takashi Saito, Akihiro Musha, Ikuhisa Okamoto, Takehisa Shimazu, Takeshi Akai, Kyosuke Nakada, Jun Yamada, Joh Ebara, Takaya Ochiai, Takuya Sano, Masatada Satoh
  • Patent number: 9604814
    Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: March 28, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomohiro Furuhashi, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Kazuya Yamamoto, Kyosuke Nakada, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Junya Suzuki, Youhei Niitsuma, Kazunori Konno, Kiichiro Goto
  • 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: 9533852
    Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Junya Suzuki, Kiichiro Goto, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Tomohiro Furuhashi, Kyosuke Nakada, Kazuya Yamamoto, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Kazunori Konno, Youhei Niitsuma
  • Publication number: 20160221787
    Abstract: A sheet processing device includes a sheet processing unit that is moved to perform sheet processing on a sheet; a sheet-processing moving unit that moves the sheet processing unit; a drive-mode determining unit that determines a drive mode of the sheet-processing moving unit; and a drive control unit that drives the sheet-processing moving unit in accordance with the drive mode. The drive-mode determining unit determines the drive mode such that the sheet processing unit is moved at combination acceleration that is a combination of first acceleration and second acceleration with a shift of time that is determined based on the cycle of the natural vibration that occurs during acceleration of the sheet processing unit.
    Type: Application
    Filed: February 1, 2016
    Publication date: August 4, 2016
    Applicant: Ricoh Company, Limited
    Inventors: Shingo MATSUSHITA, Keisuke SUGIYAMA, Kiyoshi HATA, Takashi SAITO, Akihiro MUSHA, Ikuhisa OKAMOTO, Takehisa SHIMAZU, Takeshi AKAI, Kyosuke NAKADA, Jun YAMADA, Joh EBARA, Takaya OCHIAI, Takuya SANO, Masatada SATOH
  • 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: 20160185552
    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: Application
    Filed: November 25, 2015
    Publication date: June 30, 2016
    Applicant: 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: 9359167
    Abstract: A sheet processing device comprising: a pressing unit that presses a fold line part of a folded sheet bundle; and a moving unit that moves a pressing position of the pressing unit in a fold direction of the folded sheet bundle, wherein the pressing unit includes a pair of pressing rollers that holds the folded sheet bundle therebetween, and the pair of pressing rollers changes an angle ? between a thickness direction of the folded sheet bundle and a line connecting the rotational centers of the pressing rollers in the middle of movement.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: June 7, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihiro Musha, Keisuke Sugiyama, Kiyoshi Hata, Takeshi Akai, Ikuhisa Okamoto, Jun Yamada, Takao Watanabe
  • 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: 9316986
    Abstract: A recording medium discharging device includes a discharging unit configured to discharge a recording medium from a discharge port; a tray unit on which the recording medium discharged from the discharging unit is stacked; and an air blower configured to blow air in a direction substantially parallel to a direction in which the recording medium is discharged.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: April 19, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Shuuya Nagasako, Masahiro Tamura, Tomohiro Furuhashi, Keisuke Sugiyama, Yuusuke Shibasaki, Kyosuke Nakada, Kazuya Yamamoto, Junya Suzuki, Kazunori Konno, Yasuo Niikura, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Tomohiro Yoshizaki, Kiichiro Goto