Patents by Inventor Sho Akiyama

Sho Akiyama 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: 20220380166
    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: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Wataru NOZAKI, Tomohiro FURUHASHI, Yoshito SUZUKI, Wataru TAKAHASHI, Shinya MONMA, Joji AKIYAMA, Yohsuke HARAGUCHI, Sho ASANO
  • Patent number: 11507000
    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: March 18, 2021
    Date of Patent: November 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Takahashi, Tomohiro Furuhashi, Shinya Monma, Yoshito Suzuki, Joji Akiyama, Yohsuke Haraguchi, Sho Asano, Wataru Nozaki
  • Patent number: 11500323
    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: May 6, 2021
    Date of Patent: November 15, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Takahashi, Tomohiro Furuhashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Johji Akiyama, Yohsuke Haraguchi, Wataru Nozaki
  • Patent number: 11492222
    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: February 11, 2021
    Date of Patent: November 8, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshito Suzuki, Tomohiro Furuhashi, Wataru Takahashi, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi, Sho Asano, Wataru Nozaki
  • Publication number: 20220334523
    Abstract: A sheet processing apparatus sandwiches a 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 a fixing device, a tray, and a roller. The fixing device applies heat and pressure to the two-ply sheet. The tray is disposed downstream from the fixing device in a conveyance direction of the two-ply sheet, to stack the two-ply sheet. The roller conveys the two-ply sheet vertically downward toward the tray after the two-ply sheet passes through the fixing device.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Joji AKIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Sho ASANO, Yoshito SUZUKI, Shinya MONMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Publication number: 20220289512
    Abstract: A sheet processing device includes a conveyor, a rotator, a separator, and control circuitry. The conveyor conveys a two-ply sheet in which two sheets are overlapped and bonded together at a portion of the two-ply sheet. The rotator winds 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 such that a sagging space is created in the two-ply sheet, and causes the separator to insert into the sagging space to separate the two-ply sheet into two sheets. The control circuitry causes the conveyor to convey the two-ply sheet in a direction opposite the winding direction before an insertion of the separator into the sagging space.
    Type: Application
    Filed: December 14, 2021
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Wataru TAKAHASHI, Tomohiro FURUHASHI, Shinya MONMA, Yoshito SUZUKI, Joji AKIYAMA, Yohsuke HARAGUCHI, Sho ASANO, Wataru NOZAKI
  • Publication number: 20220288910
    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: Application
    Filed: February 2, 2022
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Shinya MONMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Sho ASANO, Yoshito SUZUKI, Joji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI, Suzuka FUJITA
  • Publication number: 20220291620
    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: Application
    Filed: December 23, 2021
    Publication date: September 15, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Suzuka FUJITA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Yoshito SUZUKI, Shinya MONMA, Joji AKIYAMA, Yohsuke HARAGUCHI, Sho ASANO, Wataru NOZAKI
  • Patent number: 11385588
    Abstract: A sheet laminator includes a sheet separation device, a sheet insertion device, and circuitry. The sheet separation device is configured to perform a sheet separating operation 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, and a sheet inserting operation to insert an inner sheet between the two sheets. The sheet lamination device is configured to perform a sheet laminating operation on the two-ply sheet after the sheet separating operation and the sheet inserting operation. The circuitry is configured to cause the sheet lamination device to perform the sheet laminating operation on the two-ply sheet while causing the sheet separation device to perform the sheet separating operation on another two-ply sheet subsequent to the two-ply sheet or the sheet separating operation and the sheet inserting operation on said another two-ply sheet.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: July 12, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Wataru Nozaki, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Shinya Monma, Joji Akiyama, Yohsuke Haraguchi
  • Patent number: 11375073
    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 separator, an abnormality detection device, and circuitry. The separator is configured to move to be inserted into a gap formed between the two sheets of the two-ply sheet. The abnormality detection device is configured to detect an abnormal state in which the gap larger than a predetermined size is not formed between the two sheets before the separator is inserted into the gap. The circuitry is configured to control movement of the separator based on a result detected by the abnormality detection device.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: June 28, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Monma, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Yoshito Suzuki, Joji Akiyama, Yohsuke Haraguchi, Wataru Nozaki
  • Publication number: 20180373198
    Abstract: A process cartridge includes an image bearer to bear a toner image, a lubricant supply device to supply a lubricant to the surface of the image bearer, and a blade made of elastic material, with the leading end abutting the surface of the image bearer, wherein the leading end is formed to have an elasticity power of from 65 to 93 percent, wherein the process cartridge is detachably attachable to an image forming apparatus.
    Type: Application
    Filed: June 26, 2018
    Publication date: December 27, 2018
    Inventors: Hiroshi Mizusawa, Hiroshi Nakai, Hisashi Kikuchi, Kazuhiko Watanabe, Sho Akiyama, Tomoyuki Kirigane, Kenji Komito
  • Patent number: 9753426
    Abstract: An image bearer protective agent is provided. The image bearer protective agent includes a fatty acid metal salt and an inorganic lubricant. The inorganic lubricant includes a first inorganic lubricant having a tap density of from 0.30 to 0.8 g/cm2.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: September 5, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Komito, Hiroshi Nakai, Kohsuke Yamamoto, Hiroshi Mizusawa, Sho Akiyama
  • Publication number: 20170090399
    Abstract: An image bearer protective agent is provided. The image bearer protective agent includes a fatty acid metal salt and an inorganic lubricant. The inorganic lubricant includes a first inorganic lubricant having a tap density of from 0.30 to 0.8 g/cm2.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 30, 2017
    Inventors: Kenji KOMITO, Hiroshi NAKAI, Kohsuke YAMAMOTO, Hiroshi MIZUSAWA, Sho AKIYAMA
  • Patent number: 9316950
    Abstract: A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: April 19, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoko Takahashi, Yoshiyuki Fukuda, Yoshio Hattori, Sho Akiyama, Takamasa Ozeki, Yoshinori Nakagawa, Mikio Ishibashi, Ryuji Yoshida, Taichi Urayama
  • Patent number: 9310715
    Abstract: A developing device includes a developer bearer, a development casing in which a developer conveyance channel is formed facing the developer bearer through a communicating area, a developer supply member disposed in the developer conveyance channel, a developer regulator disposed facing a lower portion of the developer bearer to adjust an amount of developer carried on the developer bearer, and a sheet member that is removably installed to seal the communicating area and passes through a gap between the developer regulator and the developer bearer and an opening formed in the development casing. A first end of the sheet member is retained downstream from the gap in a direction of rotation of the developer bearer, and the sheet member is fixed to the development casing at a position across the communicating area from the first end with a second end positioned outside the development casing.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: April 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshio Hattori, Yoshiyuki Fukuda, Sho Akiyama, Yuki Oshikawa, Noriyuki Kimura
  • Publication number: 20160041494
    Abstract: A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.
    Type: Application
    Filed: April 4, 2013
    Publication date: February 11, 2016
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomoko TAKAHASHI, Yoshiyuki FUKUDA, Yoshio HATTORI, Sho AKIYAMA, Takamasa OZEKI, Yoshinori NAKAGAWA, Mikio ISHIBASHI, Ryuji YOSHIDA, Taichi URAYAMA
  • Patent number: 9141034
    Abstract: A developing device includes a developer bearer, a magnetic field generator provided inside the developer bearer, a casing including an opening to partly expose a surface of the developer bearer, and a lateral end cover to cover an axial end portion of the exposed surface of the developer bearer. The lateral end cover includes a wide portion extending more to an axial inner side of the developer bearer than a downstream portion of the lateral end cover positioned downstream from the wide portion in a direction of rotation of the developer bearer. A downstream end of the wide portion is downstream from an upstream end of the development range in the direction of rotation of the developer bearer.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: September 22, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiyuki Fukuda, Yoshio Hattori, Sho Akiyama, Noriyuki Kimura
  • Publication number: 20140356030
    Abstract: A developing device includes a developer bearer, a magnetic field generator provided inside the developer bearer, a casing including an opening to partly expose a surface of the developer bearer, and a lateral end cover to cover an axial end portion of the exposed surface of the developer bearer. The lateral end cover includes a wide portion extending more to an axial inner side of the developer bearer than a downstream portion of the lateral end cover positioned downstream from the wide portion in a direction of rotation of the developer bearer. A downstream end of the wide portion is downstream from an upstream end of the development range in the direction of rotation of the developer bearer.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshiyuki Fukuda, Yoshio Hattori, Sho Akiyama, Noriyuki Kimura
  • Publication number: 20140301747
    Abstract: A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 9, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomoko TAKAHASHI, Yoshiyuki FUKUDA, Yoshio HATTORI, Sho AKIYAMA, Takamasa OZEKI, Yoshinori NAKAGAWA, Mikio ISHIBASHI, Ryuji YOSHIDA, Taichi URAYAMA
  • Publication number: 20140169827
    Abstract: A developing device includes a developer bearer, a development casing in which a developer conveyance channel is formed facing the developer bearer through a communicating area, a developer supply member disposed in the developer conveyance channel, a developer regulator disposed facing a lower portion of the developer bearer to adjust an amount of developer carried on the developer bearer, and a sheet member that is removably installed to seal the communicating area and passes through a gap between the developer regulator and the developer bearer and an opening formed in the development casing. A first end of the sheet member is retained downstream from the gap in a direction of rotation of the developer bearer, and the sheet member is fixed to the development casing at a position across the communicating area from the first end with a second end positioned outside the development casing.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 19, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshio Hattori, Yoshiyuki Fukuda, Sho Akiyama, Yuki Oshikawa, Noriyuki Kimura