Patents by Inventor Yohsuke HARAGUCHI

Yohsuke HARAGUCHI 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: 12105465
    Abstract: A sheet processing apparatus is configured to sandwich one or more sheet media in a two-ply sheet in which two sheets are overlaid and bonded together at a portion of the two-ply sheet. The sheet processing apparatus includes circuitry configured to control insertion processing to insert the one or more sheet media into the two-ply sheet based on a length of the two-ply sheet in a conveyance direction, a length of one of the one or more sheet media in the conveyance direction, and a number of the one or more sheet media.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: October 1, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Takahashi, Tomohiro Furuhashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Johji Akiyama, Yohsuke Haraguchi, Wataru Nozaki
  • Patent number: 11988986
    Abstract: An image forming system includes an image forming apparatus and a sheet laminator. The image forming apparatus forms an image on a sheet being conveyed as an inner sheet. The sheet laminator performs a sheet laminating operation on a two-ply sheet in which the sheet conveyed from the image forming apparatus is inserted between two sheets of the two-ply sheet. The sheet laminator includes a heater and circuitry. The heater heats the two-ply sheet during the sheet laminating operation. The circuitry is to execute a control mode when a specific abnormal event occurs among a plurality of abnormal events that occurs in the image forming apparatus, where the control mode maintains heating by the heater of the sheet laminator for a predetermined time and interrupt the heating by the heater when an abnormal event other than the specific abnormal event occurs.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: May 21, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasunobu Kidoura, Akira Kunieda, Yohsuke Haraguchi, Hirofumi Horita, Satoshi Kuno, Koju Kawakami, Ryohsuke Akaishi
  • Patent number: 11981525
    Abstract: A sheet processing device sandwiches a sheet-shaped medium in a two-ply sheet in which two sheets are overlaid and partially bonded. The sheet processing device includes a separator, a conveyor, and a switching member. The separator separates the two sheets of the two-ply sheet. The conveyor is disposed downstream from the separator in a sheet conveyance direction and conveys the two-ply sheet. The switching member is disposed downstream from the conveyor in the sheet conveyance direction. The switching member switches a conveyance path of the two-ply sheet to convey the two-ply sheet to a fixing path on which fixing processing is performed on the two-ply sheet or a non-fixing path on which no fixing processing is performed on the two-ply sheet.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: May 14, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshito Suzuki, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Shinya Monma, Joji Akiyama, Wataru Nozaki, Yohsuke Haraguchi, Yuji Suzuki, Yuusuke Shibasaki, Takuya Morinaga
  • Patent number: 11975520
    Abstract: A sheet processing device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet processing device includes a first sheet feeder configured to feed the two-ply sheet, a second sheet feeder configured to feed an inner sheet to be inserted between the two sheets of the two-ply sheet in a state in which the non-bonding portion of the two-ply sheet is separated, and circuitry configured to cause the first sheet feeder to feed the two-ply sheet, perform a sheet separating operation on the two-ply sheet to separate the non-bonding portion of the two-ply sheet, and cause the second sheet feeder to start feeding the inner sheet before completion of the sheet separating operation on the two-ply sheet.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: May 7, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Joji Akiyama, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Yohsuke Haraguchi, Wataru Nozaki
  • Patent number: 11947287
    Abstract: A sheet separation device separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end of the two-ply sheet. The sheet separation device includes a separator that includes a first separator and a second separator. The first separator is inserted into a gap between the two sheets of the two-ply sheet. The second separator is inserted between the two sheets at said another end of the two-ply sheet that is opposite to the one end of the two-ply sheet and moves in a width direction of the two-ply sheet after the first separator is inserted into the gap and relatively moves from the one end to said another end.
    Type: Grant
    Filed: October 12, 2022
    Date of Patent: April 2, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Takahashi, Tomohiro Furuhashi, Shinya Monma, Yoshito Suzuki, Joji Akiyama, Yohsuke Haraguchi, Sho Asano, Wataru Nozaki
  • Patent number: 11884503
    Abstract: A sheet separation device separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet. The sheet separation device includes a winding roller and a gripper. The winding roller rotates and winds the two-ply sheet to separate the two-ply sheet. The gripper is disposed in the winding roller and configured to grip a gripped portion of the two-ply sheet at one end of the two-ply sheet without abutting a tip of the gripped portion at the one end of the two-ply sheet on a member.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: January 30, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshito Suzuki, Tomohiro Furuhashi, Wataru Takahashi, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Sho Asano, Wataru Nozaki
  • Patent number: 11858287
    Abstract: An image forming system includes a sheet processing apparatus, a heat presser, an image forming apparatus, and control circuitry. The sheet processing apparatus separates a two-ply sheet in which two sheets are overlaid and bonded together at a portion of the two-ply sheet, and sandwiches a sheet medium between the sheets of the two-ply sheet. The heat presser heats and presses the two-ply sheet. The control circuitry performs a first mode to cause the sheet processing apparatus to sandwich the sheet medium, on which an image has been formed by the image forming apparatus, between the two sheets of the two-ply sheet and cause the heat presser to laminate the two-ply sheet, and a second mode to cause the heat presser to laminate a sheet set that includes the sheet medium sandwiched between the two sheets of the two-ply sheet by a user.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: January 2, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yohsuke Haraguchi, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Wataru Nozaki
  • Patent number: 11851301
    Abstract: A sheet processing apparatus laminates a partially joined two-ply sheet and a sheet medium inserted in the two-ply sheet. The sheet processing apparatus includes a heat presser, an information acquisition device, and control circuitry. The heat presser heats and presses the two-ply sheet and the sheet medium. The information acquisition device acquires information on the two-ply sheet and the sheet medium. The control circuitry sets a fixing temperature of the heat presser in accordance with the information of the two-ply sheet and the sheet medium acquired by the information acquisition device.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: December 26, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Nozaki, Tomohiro Furuhashi, Yoshito Suzuki, Wataru Takahashi, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Sho Asano
  • Patent number: 11845254
    Abstract: A sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet separation device includes a conveyance roller pair and circuitry. The conveyance roller pair is configured to convey the two-ply sheet while nipping the two-ply sheet, when separating the non-bonding portion of the two-ply sheet. The circuitry is configured to control sheet conveyance. The circuitry is configured to stop the conveyance roller pair, cause a leading end of the two-ply sheet conveyed toward the conveyance roller pair to contact a nip region of the conveyance roller pair while the conveyance roller pair is stopped, and start the conveyance roller pair to rotate to nip the two-ply sheet.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: December 19, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki
  • Patent number: 11801705
    Abstract: An image forming system includes an image forming apparatus, a sheet processing device, and control circuitry. The image forming apparatus forms an image on a sheet. The sheet processing device performs post-processing on the sheet. The sheet processing device includes a first conveyance path through which the sheet is conveyed and subjected to the post-processing and a second conveyance path through which the sheet is conveyed without the post-processing. In response to an instruction of print jobs including both a print job of one or N copies subjected to the post-processing and a print job not subjected to the post-processing, the circuitry executes the job not subjected to the post-processing during execution of an M-th copy of the job subjected to the post-processing and causes the sheet to be conveyed through the second conveyance path, where N is two or greater and M satisfies 1?M<N.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: October 31, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Sho Asano, Wataru Takahashi, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki, Tomohiro Furuhashi
  • Publication number: 20230303352
    Abstract: A sheet processing apparatus including a sheet feeder, a sheet processing device, a sheet ejection device, a purge unit, a multifeed sensor, and circuitry. The sheet feeder feeds a sheet toward a sheet conveyance passage. The sheet processing device performs a predetermined operation on the sheet. The sheet ejection device stacks the sheet when the predetermined operation has been performed. The purge unit stacks the sheet when the predetermined operation has not been performed. The multifeed sensor detects whether sheets are multifed and a number of multifed sheets. The circuitry counts a number of sheets, determines that the sheets stacked in the purge unit is full when a number of counted sheets reaches a predetermined number of sheets, and conveys the multifed sheets toward the purge unit and adds the number of counted sheets according to the number of multifed sheets, in response to detection of the multifed sheets.
    Type: Application
    Filed: February 14, 2023
    Publication date: September 28, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryohsuke AKAISHI, Akira KUNIEDA, Yohsuke HARAGUCHI, Hirofumi HORITA, Satoshi KUNO, Koju KAWAKAMI, Yasunobu KIDOURA
  • Publication number: 20230264461
    Abstract: A sheet processing device includes a sheet storage and a sheet displacer. The sheet storage includes a first storage portion that includes a first wall that is one side wall of the sheet storage and a second wall that is part of another side wall of the sheet storage and a second storage portion that includes a third wall continuous to the first wall and the second wall. The sheet displacer displaces a preceding sheet stored in the sheet storage and contacts an upper end of the preceding sheet to displace the preceding sheet such that the upper end of the preceding sheet moves toward the third wall. The second wall and the third wall are coupled via a bent portion that bends in a manner such that a storage space of the second storage portion is greater than a storage space of the first storage portion.
    Type: Application
    Filed: January 17, 2023
    Publication date: August 24, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi KUNO, Akira KUNIEDA, Yohsuke HARAGUCHI, Hirofumi HORITA, Koju KAWAKAMI, Yasunobu KIDOURA, Ryohsuke AKAISHI
  • Publication number: 20230264491
    Abstract: A sheet feeder includes a sheet stacker, a sheet feed roller, a separation roller pair, and a lifter. Sheets are conveyed and stacked on the sheet stacker. The sheet feed roller feeds the sheets. The separation roller pair separates the sheets fed by the sheet feed roller one by one. The lifter lifts and lowers the sheet stacker depending on a stack amount of the sheets. The sheet stacker includes a first stacking face, a second stacking face, and a bent portion integrally connecting the stacking faces such that the stacking faces form a specified angle. The sheet stacker stacks the sheets such that a center of gravity of the sheets is positioned above the first stacking face and integrally displaces the stacking faces when the lifter operates.
    Type: Application
    Filed: February 3, 2023
    Publication date: August 24, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Hirofumi HORITA, Akira Kunieda, Yohsuke Haraguchi, Satoshi Kuno, Koju Kawakami, Yasuobu Kidoura, Ryohsuke Akaishi
  • Publication number: 20230264909
    Abstract: A sheet separation device that conveys a two-ply sheet in a state where the one side joined is located on an upstream side or a downstream side of the two-ply sheet in a conveyance direction, separates the two-ply sheet into the two sheets, and inserts an inner sheet from a non-joined side opposite the joined side in the sheet conveyance direction so that the inner sheet is sandwiched between the two sheets overlaid with each other includes a conveying roller pair including a pair of rollers and circuitry. The conveying roller pair conveys the two-ply sheet and holds a joined portion of in the two-ply sheet at which the two sheets are joined, at a nip portion of the conveying roller pair when the inner sheet is inserted into the two-ply sheet. The circuitry contacts the inner sheet against the joined portion of the two-ply sheet to perform skew correction.
    Type: Application
    Filed: February 16, 2023
    Publication date: August 24, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Koju KAWAKAMI, Akira Kunieda, Yohsuke Haraguchi, Hirofumi Horita, Saloshi Kuno, Yasunobu Kidoura, Ryohsuke Akaishi
  • Publication number: 20230256726
    Abstract: A sheet processing apparatus including a sheet feeder, a sheet processing device, a sheet ejection device, a purge unit, a multifeed sensor, a sheet sensor, and circuitry. The circuitry stops an operation of the sheet processing apparatus when the multifeed sensor has not detected multifeed of the sheet and the sheet sensor does not detect a trailing end of the sheet after a first set time from detection of a leading end of the sheet, stop the operation when the multifeed sensor has detected the multifeed and the sheet sensor does not detect the trailing end of the sheet after a second set time from the detection, and conveys the sheet toward the purge unit without stopping the operation when the multifeed sensor has detected the multifeed and the sheet sensor detects the trailing end of the sheet before the second set time elapses from the detection.
    Type: Application
    Filed: February 14, 2023
    Publication date: August 17, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Akira KUNIEDA, Satoshi KUNO, Hirofumi HORITA, Koju KAWAKAMI, Yasunobu KIDOURA, Ryohsuke AKAISHI, Yohsuke HARAGUCHI
  • Patent number: 11718081
    Abstract: A sheet separation device includes a rotator, a nipping member to nip the two-ply sheet with the rotator, a first conveyor to convey the two-ply sheet in a first direction toward the rotator and a second direction reverse thereto, a winding member to wind the two-ply sheet around the rotator, a second conveyor to convey a sheet medium in the second direction, a separation claw to move in a width direction; a sheet guide to guide the separated two sheets to different passages; and control circuitry. The first conveyor conveys the two-ply sheet to the rotator with a bonded portion at an upstream end. The control circuitry inserts the separation claw into a space between the two sheets, adjusts a projection amount of the two-ply sheet from a nip of the first conveyor in the second direction, and inserts the sheet medium in two-ply sheet adjusted in the projection amount.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: August 8, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Wataru Takahashi, Tomohiro Furuhashi, Michitaka Suzuki, Tomomichi Hoshino, Fumiharu Yoneyama, Kazuyoshi Matsuo, Makoto Hidaka, Koki Sakano, Akira Kunieda, Takahiro Watanabe, Takuya Morinaga, Yohsuke Haraguchi
  • Publication number: 20230244164
    Abstract: An image forming system includes an image forming apparatus and a sheet laminator. The image forming apparatus forms an image on a sheet being conveyed as an inner sheet. The sheet laminator performs a sheet laminating operation on a two-ply sheet in which the sheet conveyed from the image forming apparatus is inserted between two sheets of the two-ply sheet. The sheet laminator includes a heater and circuitry. The heater heats the two-ply sheet during the sheet laminating operation. The circuitry is to execute a control mode when a specific abnormal event occurs among a plurality of abnormal events that occurs in the image forming apparatus, where the control mode maintains heating by the heater of the sheet laminator for a predetermined time and interrupt the heating by the heater when an abnormal event other than the specific abnormal event occurs.
    Type: Application
    Filed: January 20, 2023
    Publication date: August 3, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasunobu KIDOURA, Akira Kunieda, Yohsuke Haraguchi, Hirofumi Horita, Satoshi Kuno, Koju Kwakami, Ryohsuke Akaishi
  • Patent number: 11679582
    Abstract: A sheet processing device includes a conveyor, a rotator, a separator, and control circuitry. The conveyor conveys a sheet-shaped medium into a two-ply sheet in which two sheets are overlaid and partially bonded, and includes a drive roller and a driven roller. The rotator winds the two-ply sheet. The separator separates the two sheets of the two-ply sheet. The control circuitry causes the conveyor to convey the two-ply sheet in a winding direction to wind the two-ply sheet around the rotator to generate a space between the two sheets, and causes the separator to insert into the space between the two sheets to separate the two sheets. The drive roller and the rotator are disposed on a same side with respect to a sheet conveyance passage of the two-ply sheet, and the driven roller and the rotator are disposed on opposite sides with respect to the sheet conveyance passage.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: June 20, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Suzuka Fujita, Tomohiro Furuhashi, Wataru Takahashi, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Sho Asano, Wataru Nozaki
  • Patent number: 11642878
    Abstract: A laminating device inserts a sheet-shaped medium into a two-ply sheet in which two sheets are overlaid and partially bonded, and includes a loader, a fixing device, and control circuitry. The loader loads the sheet-shaped medium or a cleaning sheet. The fixing device laminates the two-ply sheet in which the sheet-shaped medium is sandwiched between the two sheets of the two-ply sheet. The control circuitry performs a cleaning mode of conveying a plurality of cleaning sheets from the loader to clean the fixing device. The cleaning mode is to convey a subsequent cleaning sheet of the plurality of cleaning sheets at a position different from a position of a preceding cleaning sheet of the plurality of cleaning sheets in a direction orthogonal to a conveyance direction of the plurality of cleaning sheets.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: May 9, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Monma, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki, Suzuka Fujita
  • Patent number: 11592778
    Abstract: An image forming apparatus includes a sheet separation device, a first sheet feeder, a second sheet feeder, an image forming device, and circuitry. The sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet. The first sheet feeder is configured to feed the two-ply sheet. The second sheet feeder is configured to feed an inner sheet to be inserted between the two sheets. The image forming device is configured to form an image on a surface of the inner sheet. The circuitry is configured to cause the first sheet feeder to feed the two-ply sheet, perform a sheet separating operation on the two-ply sheet and cause the second sheet feeder to start feeding the inner sheet before completion of the sheet separating operation on the two-ply sheet.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: February 28, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Sho Asano, Wataru Takahashi, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki, Tomohiro Furuhashi