Patents by Inventor Shohei Saito

Shohei Saito 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: 20240126193
    Abstract: An image forming apparatus includes a first rotatable member, a second rotatable member, an air nozzle, and a pipe. The pipe includes a portion provided in a range overlapping with the first rotatable member and making one reciprocation or more in a case that when a direction crossing a feeding direction of a recording material fed in a nip is a widthwise direction of the first rotatable member, the pipe is viewed in a direction perpendicular to the widthwise direction.
    Type: Application
    Filed: September 5, 2023
    Publication date: April 18, 2024
    Inventors: YASUHARU TORATANI, SHUTARO SAITO, KEISUKE YOSHIDA, YUYA YAMADA, TAKU ASHIDA, ASUNA FUKAMACHI, SHOHEI TSUZAKI, YUSUKE YAMAGUCHI, HIROSHI MIYAMOTO
  • Publication number: 20240126194
    Abstract: An image forming apparatus includes a first rotatable member, a second rotatable member, an air nozzle, and a pipe. The pipe includes a portion extending along a widthwise direction of the first rotatable member perpendicular to a recording material feeding direction.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 18, 2024
    Inventors: SHUTARO SAITO, KEISUKE YOSHIDA, YUYA YAMADA, TAKU ASHIDA, ASUNA FUKAMACHI, YUSUKE YAMAGUCHI, SHOHEI TSUZAKI, HIROSHI MIYAMOTO, YASUHARU TORATANI
  • Publication number: 20240126197
    Abstract: An image forming apparatus includes a reception unit to receive a job, heating and pressing rotary members to form a nip portion, and a spraying member having a nozzle and a cylinder. The nozzle discharges air to the heating rotary member and a recording material. During a period after the reception unit receives the job and before a leading edge of a first sheet of the recording material reaches the nip portion, the spraying member performs a spraying operation of spraying air in an amount greater than or equal to a predetermined amount. The air that the spraying member sprays on the first sheet of the recording material during the job is higher in temperature than the air that the spraying member sprays during the period after the reception unit receives the job and before the leading edge of the first sheet of the recording material reaches the nip portion.
    Type: Application
    Filed: October 12, 2023
    Publication date: April 18, 2024
    Inventors: SHOHEI TSUZAKI, ASUNA FUKAMACHI, YUSUKE YAMAGUCHI, HIROSHI MIYAMOTO, YASUHARU TORATANI, KEISUKE YOSHIDA, SHUTARO SAITO, YUYA YAMADA, TAKU ASHIDA
  • Publication number: 20240078174
    Abstract: An information storage device includes a storage unit, a control unit, an allocation information storage unit, a QoS parameter storage unit, and a monitoring result storage unit. The control unit creates and manages a logical storage area using the storage area of the storage unit when a storage area allocation request is received. The allocation information storage unit stores allocation information related to logical storage areas. The QoS parameter storage unit stores quality requests expected to be satisfied for a communication for using the logical storage area. The control unit monitors the operating state and characteristics of the storage unit and the communication status, and stores the results in the monitoring result storage unit. The control unit derives internal QoS parameters to be set in the information storage device from the information stored in the allocation information storage unit, the QoS parameter storage unit, and the monitoring result storage unit.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 7, 2024
    Inventors: Takeshi ISHIHARA, Yohei HASEGAWA, Kenta YASUFUKU, Shohei ONISHI, Yoshiki SAITO, Junpei KIDA
  • Publication number: 20230125359
    Abstract: Provided is a compound having higher fluorescence quantum yield and higher optical stability than a conventional FLAP and a polymer compound containing the compound. A: seven or eight-membered ring structure, Y1, Y2, Y3: halogen atom or the like, al: number of Y1, a2: number of Y2, B: number of Y3, 0?m and n?3: when 1?m?3, Y1 may be substituted with a structure portion defined by m, when 1?n?3, Y2 may be substituted with a structure portion defined by n, and B1, B2: Formulas (2-1) to (2-3): C1, C2, C3: structure containing a cyclic hydrocarbon compound, D1, D2, D3: substructure that inhibits aggregation, E1, E2, E3: polymerizable substructure, Z1: hydrogen atom or the like, c: number of substituent groups Z1, Z2, Z3: hydrogen atom or the like, and may form a ring with C2.
    Type: Application
    Filed: December 8, 2022
    Publication date: April 27, 2023
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Shohei SAITO, Hiroshi YABU, Hiroya ABE
  • Patent number: 11560383
    Abstract: Provided is a compound having higher fluorescence quantum yield and higher optical stability than a conventional FLAP and a polymer compound containing the compound. A: seven or eight-membered ring structure, Y1, Y2, Y3: halogen atom or the like, a1: number of Y1, a2: number of Y2, B: number of Y3, 0?m and n?3: when 1?m?3, Y1 may be substituted with a structure portion defined by m, when 1?n?3, Y2 may be substituted with a structure portion defined by n, and B1, B2: Formulas (2-1) to (2-3). C1, C2, C3: structure containing a cyclic hydrocarbon compound, D1, D2, D3: substructure that inhibits aggregation, E1, E2, E3: polymerizable substructure, Z1: hydrogen atom or the like, c: number of substituent groups Z1, Z2, Z3: hydrogen atom or the like, and may form a ring with C2.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: January 24, 2023
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Shohei Saito, Hiroshi Yabu, Hiroya Abe
  • Patent number: 11235570
    Abstract: A liquid discharge apparatus includes a plurality of head units each of which includes a plurality of heads configured to discharge a liquid, and a plurality of temperature-controlled liquid supply manifolds each of which is configured to distribute the temperature-controlled liquid to the plurality of heads of one of the plurality of head units. The liquid discharge apparatus further includes a conveyor configured to convey a sheet onto which the liquid is applied by the plurality of head units, and the conveyor defines a sheet conveyance passage opposite the plurality of head units. At least one of the plurality of temperature-controlled liquid supply manifolds is disposed between two of the plurality of head units and in a vicinity of the sheet conveyance passage.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: February 1, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiko Kachi, Shohei Saito
  • Patent number: 11173717
    Abstract: A liquid discharge apparatus includes a head configured to discharge a liquid, a circulation passage through which a temperature-controlled liquid circulates, at least two heat generation portions different in heat generation amount from each other, and a cooler configured to cool the temperature-controlled liquid. The circulation passage is coupled to the head. The at least two heat generation portions are thermally coupled with the circulation passage in an ascending order of heat generation amount and downstream from the cooler in a direction of flow in the circulation passage.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: November 16, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiko Kachi, Shohei Saito
  • Patent number: 11161340
    Abstract: A liquid discharge apparatus includes a plurality of heads configured to discharge a liquid, a liquid supply manifold configured to distribute the liquid to the plurality of heads, and a temperature-controlled liquid supply manifold configured to supply a temperature-controlled liquid to the plurality of heads. The temperature-controlled liquid supply manifold is thermally coupled to the liquid supply manifold.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: November 2, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Shohei Saito, Yasuhiko Kachi
  • Publication number: 20210031508
    Abstract: A liquid discharge apparatus includes a plurality of head units each of which includes a plurality of heads configured to discharge a liquid, and a plurality of temperature-controlled liquid supply manifolds each of which is configured to distribute the temperature-controlled liquid to the plurality of heads of one of the plurality of head units. The liquid discharge apparatus further includes a conveyor configured to convey a sheet onto which the liquid is applied by the plurality of head units, and the conveyor defines a sheet conveyance passage opposite the plurality of head units. At least one of the plurality of temperature-controlled liquid supply manifolds is disposed between two of the plurality of head units and in a vicinity of the sheet conveyance passage.
    Type: Application
    Filed: July 14, 2020
    Publication date: February 4, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasuhiko Kachi, Shohei Saito
  • Publication number: 20210023847
    Abstract: A liquid discharge apparatus includes a head configured to discharge a liquid, a circulation passage through which a temperature-controlled liquid circulates, at least two heat generation portions different in heat generation amount from each other, and a cooler configured to cool the temperature-controlled liquid. The circulation passage is coupled to the head. The at least two heat generation portions are thermally coupled with the circulation passage in an ascending order of heat generation amount and downstream from the cooler in a direction of flow in the circulation passage.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 28, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasuhiko Kachi, Shohei Saito
  • Publication number: 20210023838
    Abstract: A liquid discharge apparatus includes a plurality of heads configured to discharge a liquid, a liquid supply manifold configured to distribute the liquid to the plurality of heads, and a temperature-controlled liquid supply manifold configured to supply a temperature-controlled liquid to the plurality of heads. The temperature-controlled liquid supply manifold is thermally coupled to the liquid supply manifold.
    Type: Application
    Filed: June 8, 2020
    Publication date: January 28, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Shohei Saito, Yasuhiko Kachi
  • Publication number: 20210002284
    Abstract: Provided is a compound having higher fluorescence quantum yield and higher optical stability than a conventional FLAP and a polymer compound containing the compound. A: seven or eight-membered ring structure, Y1,Y2,Y3: halogen atom or the like, a1: number of Y1, a2: number of Y2, B: number of Y3, 0?m and n?3: when 1?m?3, Y1 may be substituted with a structure portion defined by m, when 1?n?3, Y2 may be substituted with a structure portion defined by n, and B1, B2: Formulas (2-1) to (2-3). C1, C2, C3: structure containing a cyclic hydrocarbon compound, D1, D2, D3: substructure that inhibits aggregation, E1, E2, E3: polymerizable substructure, Z1: hydrogen atom or the like, c: number of substituent groups Z1, Z2, Z3: hydrogen atom or the like, and may form a ring with C2.
    Type: Application
    Filed: March 4, 2019
    Publication date: January 7, 2021
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Shohei SAITO, Hiroshi YABU, Hiroya ABE
  • Patent number: 10442886
    Abstract: Provided is a mechanochromic resin by which a stress applied to a material can be visualized in real time, and a mechanochromic luminescent material that is used in the synthesis of the mechanochromic resin. Stress can be visualized in real time by means of a mechanochromic luminescent material represented by formula (1) or formula (2) and a mechanochromic resin obtained by crosslinking the mechanochromic luminescent material. [Chemical formula 1] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (1), and Y1 and Y2 may be same as or different from each other. Z1 and Z2 each denote a polymerizable group, and may be same as or different from each other.) [Chemical formula 2] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (2), and Y1 and Y2 may be same as or different from each other.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: October 15, 2019
    Assignee: Japan Science and Technology Agency
    Inventors: Hiroshi Yabu, Yuta Saito, Shohei Saito, Shigehiro Yamaguchi, Shunpei Nobusue
  • Publication number: 20190031820
    Abstract: Provided is a mechanochromic resin by which a stress applied to a material can be visualized in real time, and a mechanochromic luminescent material that is used in the synthesis of the mechanochromic resin. Stress can be visualized in real time by means of a mechanochromic luminescent material represented by formula (1) or formula (2) and a mechanochromic resin obtained by crosslinking the mechanochromic luminescent material. [Chemical formula 1] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (1), and Y1 and Y2 may be same as or different from each other. Z1 and Z2 each denote a polymerizable group, and may be same as or different from each other.) [Chemical formula 2] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (2), and Y1 and Y2 may be same as or different from each other.
    Type: Application
    Filed: November 16, 2015
    Publication date: January 31, 2019
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hiroshi YABU, Yuta SAITO, Shohei SAITO, Shigehiro YAMAGUCHI, Shunpei NOBUSUE
  • Patent number: 9650219
    Abstract: A paper conveying device includes a conveying guide, a bearing, a conveying-guide facing surface, and a separation restrictor. The conveying guide includes a conveyance surface for conveying paper and a pivot shaft and is swingable about the pivot shaft. The bearing includes a support surface facing at least an upper semiperimeter of the pivot shaft. The conveying-guide facing surface is provided to face an end of the conveying guide when the conveying guide swings. The end is opposite to the conveyance surface. The separation restrictor is provided to the conveying guide to restrict separation of the pivot shaft from the bearing at least in a given swing range of the conveying guide by contacting the conveying-guide facing surface.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 16, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Arinobu Yoshiura, Hideo Nagafuji, Yuji Arai, Kohichi Utsunomiya, Kiho Sai, Shohei Saito, Yutaka Ikebuchi, Motoyoshi Yamano
  • Patent number: 9599940
    Abstract: A fixing device includes: a fixing member that is rotatable and in an endless shape; a heat source that heats the fixing member; a nip forming member that is arranged inside the fixing member; and a pressurizing member that is pressurized to be in contact with the nip forming member through the fixing member, to form a fixing nip. The fixing device fixes an unfixed image on a recording medium by passing the recording medium that carries the unfixed image through the fixing nip. The nip forming member includes a base layer, and a high thermal-conductive layer that is arranged on a surface layer of the base layer on a fixing nip side, and that has higher thermal conductivity than the base layer, and in the high thermal-conductive layer, a low thermal-conductive portion is arranged near an end portion in an axial direction of the fixing member.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: March 21, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Motoyoshi Yamano, Kohichi Utsunomiya, Hiromasa Takagi, Kenji Ishii, Takayuki Seki, Keitaro Shoji, Hideo Nagafuji, Yuji Arai, Arinobu Yoshiura, Shohei Saito, Qifeng Cui, Yutaka Ikebuchi
  • Patent number: 9533496
    Abstract: An apparatus for ejecting liquids includes a liquid ejection head including a nozzle, the nozzle ejecting the liquids; and an ejection detector to detect whether the liquids are ejected from the nozzle of the liquid ejection head, the ejection detector including an insulated receiver having an adhering face to receive and adhere the liquids ejected from the nozzle and an electrode disposed on an opposite side of the adhering face of the receiver. The ejection detector detects electrical change generated when the liquids adhere to the adhering face of the receiver while generating a potential difference between the liquid ejection head and the electrode.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shotaro Takeuchi, Shohei Saito, Takahiro Kikuchi
  • Patent number: 9494900
    Abstract: A device includes a fixing belt, a holder that holds the fixing belt, a pressing member that comes in contact with the fixing belt, a nip-forming-member arranged inside the fixing belt, that forms a nip by coming in contact with the pressing member, a supporting member that supports the nip-forming-member, a side plate to which the nip-forming-member and the supporting member are fixed, and a pressing mechanism that presses a pressing roller to the nip-forming-member via the fixing belt. The supporting member includes at least two plates. The two plates are separated from each other near a contact portion where the plates come in contact with the nip-forming-member. At least a part of each of the plates is a flat surface parallel to a direction of a load applied by the pressing mechanism. Portions of the two plates on a side distant from the contact portion are joined together.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 15, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kohichi Utsunomiya, Hideo Nagafuji, Yuji Arai, Arinobu Yoshiura, Qifeng Cui, Shohei Saito, Yutaka Ikebuchi, Motoyoshi Yamano
  • Patent number: 9477182
    Abstract: A fixing device includes: a fixing member; an opposing member that provides a fixing nip with the fixing member; a heating unit that heats the fixing member; a heating area changing member that moves to change a heating area of the fixing member heated by the heating unit; and a position detection sensor that detects a position of the heating area changing member. The fixing device controls a stop position of the heating area changing member based on detection by the position detection sensor. The single position detection sensor detects the position of the heating area changing member both when the heating area changing member is moving from a preset reference position to an arbitrary position and when the heating area changing member is moving back from an arbitrary position to the reference position.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: October 25, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yutaka Ikebuchi, Hideo Nagafuji, Yuji Arai, Kohichi Utsunomiya, Arinobu Yoshiura, Kiho Sai, Motoyoshi Yamano, Shohei Saito