Patents by Inventor Ryohei Yoshikawa

Ryohei Yoshikawa 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: 20240094664
    Abstract: A fixing device includes: a first rotatable member; a second rotatable member disposed in contact with the first rotatable member; a pressing member that is disposed on an inner circumferential surface of the second rotatable member and presses the inner circumferential surface of the second rotatable member such that the second rotatable member is pressed against the first rotatable member; a sliding member interposed between the inner circumferential surface of the second rotatable member and the pressing member; and a lubricant interposed between the inner circumferential surface of the second rotatable member and the sliding member. The inner circumferential surface of the second rotatable member contains a resin having at least one group selected from the group consisting of an amido group, an imido group, a ketone group, and a sulfide group.
    Type: Application
    Filed: January 11, 2023
    Publication date: March 21, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kenji OMORI, Hideaki OHARA, Ryohei YOSHIKAWA
  • Publication number: 20240027944
    Abstract: A sliding member for a fixing device includes a resin layer that includes plural recessed portions on a surface of the resin layer, in which, in a top view, the recessed portion has a shape having a tip angle less than 90° in a sliding direction and an area ratio of an area of the recessed portions to a surface area of the resin layer is 30% or more and 70% or less.
    Type: Application
    Filed: March 26, 2023
    Publication date: January 25, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei YOSHIKAWA, Kenji OMORI, Hideaki OHARA
  • Publication number: 20240019799
    Abstract: A resin belt for an image forming apparatus includes a resin base layer containing a filler. The exposed area of the filler on an inner circumferential surface side of the resin base layer is 0.1% or less.
    Type: Application
    Filed: March 6, 2023
    Publication date: January 18, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Tomotake INAGAKI, Ryohei YOSHIKAWA, Kenji KAJIWARA, Yasuhiko KINUTA, Hitoshi KOMURO
  • Patent number: 11796946
    Abstract: A belt includes a resin and an aggregate in which plural fibrous carbons are entangled with each other, in which a maximum diameter of the aggregate is 50% or less of a belt film thickness.
    Type: Grant
    Filed: October 3, 2021
    Date of Patent: October 24, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Tomotake Inagaki, Ryohei Yoshikawa
  • Patent number: 11774885
    Abstract: A polymer material molded product includes a polymer material and a porous carbon material having an X-ray diffraction spectral characteristic shown in the following (1) or (2), (1): a peak derived from a (002) plane of carbon is observed, a half width of the peak derived from the (002) plane of carbon is 5° or more, and a half width of a peak derived from a (10) plane of carbon is 3.2° or less, and (2): the peak derived from the (002) plane of carbon is not observed, and the half width of the peak derived from the (10) plane of carbon is 3.2° or less.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: October 3, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kenji Kajiwara, Tomotake Inagaki, Ryohei Yoshikawa, Kenji Omori, Ryosuke Kubota, Jun Kimura, Hideaki Ohara
  • Publication number: 20230251754
    Abstract: An image distribution device receives, from a terminal device, a handwritten and input image including a trajectory handwritten and inputted by a first user in a state where a virtual space, in which characters of the first and a second user are present, is set as a background, to a display view of the terminal device on which the virtual space is displayed. By transmitting, to the terminal device, the received handwritten and input image as a message from the first user, the image distribution device displays the handwritten and input image on the display view of the terminal device on which the virtual space is displayed while associating the handwritten and input image with the character of the first user.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 10, 2023
    Applicant: GREE, INC.
    Inventors: Gaku MIZUKAMI, Ryohei YOSHIKAWA
  • Patent number: 11662877
    Abstract: An image distribution device receives, from a terminal device, a handwritten and input image including a trajectory handwritten and inputted by a first user in a state where a virtual space, in which characters of the first and a second user are present, is set as a background, to a display view of the terminal device on which the virtual space is displayed. By transmitting, to the terminal device, the received handwritten and input image as a message from the first user, the image distribution device displays the handwritten and input image on the display view of the terminal device on which the virtual space is displayed while associating the handwritten and input image with the character of the first user.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: May 30, 2023
    Assignee: GREE, INC.
    Inventors: Gaku Mizukami, Ryohei Yoshikawa
  • Patent number: 11644776
    Abstract: An endless belt includes a resin and an acicular filler of which a thermal conductivity is 220 W/mK or more and 320 W/mK or less, a volume resistivity is 1011 ?cm or more and 1016 ?cm or less, and a content with respect to the endless belt is 1% by mass or more and 30% by mass or less.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: May 9, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Hideaki Ohara, Tomotake Inagaki, Ryohei Yoshikawa, Kenji Omori, Kenji Kajiwara, Junko Yamasaki
  • Publication number: 20230121642
    Abstract: An endless belt includes a resin and an acicular filler of which a thermal conductivity is 220 W/mK or more and 320 W/mK or less, a volume resistivity is 1011 ?cm or more and 1016 ?cm or less, and a content with respect to the endless belt is 1% by mass or more and 30% by mass or less.
    Type: Application
    Filed: March 31, 2022
    Publication date: April 20, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Hideaki OHARA, Tomotake INAGAKI, Ryohei YOSHIKAWA, Kenji OMORI, Kenji KAJIWARA, Junko YAMASAKI
  • Publication number: 20230119004
    Abstract: A polymer material molded product includes a polymer material and a porous carbon material having an X-ray diffraction spectral characteristic shown in the following (1) or (2), (1): a peak derived from a (002) plane of carbon is observed, a half width of the peak derived from the (002) plane of carbon is 5° or more, and a half width of a peak derived from a (10) plane of carbon is 3.2° or less, and (2): the peak derived from the (002) plane of carbon is not observed, and the half width of the peak derived from the (10) plane of carbon is 3.2° or less.
    Type: Application
    Filed: April 18, 2022
    Publication date: April 20, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kenji KAJIWARA, Tomotake INAGAKI, Ryohei YOSHIKAWA, Kenji OMORI, Ryosuke KUBOTA, Jun KIMURA, Hideaki OHARA
  • Patent number: 11537073
    Abstract: A fixing belt includes, in the following order: a base material layer containing a resin; an elastic layer containing an elastic material; and a release layer, in which each of the base material layer and the elastic layer further contains an aggregate in which plural fibrous carbons are entangled with each other, a maximum diameter of the aggregate in the base material layer is 50% or less of a film thickness of the base material layer, and a maximum diameter of the aggregate in the elastic layer is 15% or less of a film thickness of the elastic layer.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: December 27, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei Yoshikawa, Tomotake Inagaki
  • Patent number: 11531295
    Abstract: A fixing belt includes, in the following order: a resin base material layer; an elastic layer; and a release layer, in which the elastic layer contains an elastic material and an aggregate in which plural fibrous carbons are entangled with each other, and a maximum diameter of the aggregate is 15% or less of a film thickness of the elastic layer.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: December 20, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei Yoshikawa, Tomotake Inagaki
  • Publication number: 20220397850
    Abstract: A belt includes a resin and an aggregate in which plural fibrous carbons are entangled with each other, in which a maximum diameter of the aggregate is 50% or less of a belt film thickness.
    Type: Application
    Filed: October 3, 2021
    Publication date: December 15, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Tomotake INAGAKI, Ryohei YOSHIKAWA
  • Publication number: 20220382196
    Abstract: A fixing belt includes, in the following order: a resin base material layer; an elastic layer; and a release layer, in which the elastic layer contains an elastic material and an aggregate in which plural fibrous carbons are entangled with each other, and a maximum diameter of the aggregate is 15% or less of a film thickness of the elastic layer.
    Type: Application
    Filed: October 4, 2021
    Publication date: December 1, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei YOSHIKAWA, Tomotake INAGAKI
  • Publication number: 20220382197
    Abstract: A fixing belt includes, in the following order: a base material layer containing a resin; an elastic layer containing an elastic material; and a release layer, in which each of the base material layer and the elastic layer further contains an aggregate in which plural fibrous carbons are entangled with each other, a maximum diameter of the aggregate in the base material layer is 50% or less of a film thickness of the base material layer, and a maximum diameter of the aggregate in the elastic layer is 15% or less of a film thickness of the elastic layer.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 1, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei Yoshikawa, Tomotake Inagaki
  • Patent number: 11334006
    Abstract: An endless belt includes: a resin; and electrically conductive particles, wherein an integrated discharge amount is 350 ?C or less. The integrated discharge amount is determined by disposing an electrode at a position spaced 60 ?m apart from the outer circumferential surface of the belt, applying a voltage to the electrode, and measuring the amount of discharge for a period of 1 second after the voltage reaches 1300 V.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: May 17, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke Tanemura, Shigeru Fukuda, Satoya Sugiura, Tomotake Inagaki, Masato Ono, Masato Furukawa, Hiroaki Tanaka, Kenta Yamakoshi, Ryohei Yoshikawa, Yosuke Kubo, Masayuki Seko, Koichi Matsumoto
  • Publication number: 20220146965
    Abstract: An endless belt includes: a resin; and electrically conductive particles, wherein an integrated discharge amount is 350 ?C or less. The integrated discharge amount is determined by disposing an electrode at a position spaced 60 ?m apart from the outer circumferential surface of the belt, applying a voltage to the electrode, and measuring the amount of discharge for a period of 1 second after the voltage reaches 1300 V.
    Type: Application
    Filed: May 5, 2021
    Publication date: May 12, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke TANEMURA, Shigeru FUKUDA, Satoya SUGIURA, Tomotake INAGAKI, Masato ONO, Masato FURUKAWA, Hiroaki TANAKA, Kenta YAMAKOSHI, Ryohei YOSHIKAWA, Yosuke KUBO, Masayuki SEKO, Koichi MATSUMOTO
  • Patent number: 11327425
    Abstract: A fixing belt includes an annular polyimide resin base layer having a lower imidization ratio in the outer peripheral surface than in a central portion in the thickness direction, a metal layer provided on the outer peripheral surface of the polyimide resin base layer, and an elastic layer provided on the outer peripheral surface of the metal layer.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: May 10, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Ryohei Yoshikawa, Tomotake Inagaki, Ryo Sekiguchi
  • Publication number: 20220043556
    Abstract: An image distribution device receives, from a terminal device, a handwritten and input image including a trajectory handwritten and inputted by a first user in a state where a virtual space, in which characters of the first and a second user are present, is set as a background, to a display view of the terminal device on which the virtual space is displayed. By transmitting, to the terminal device, the received handwritten and input image as a message from the first user, the image distribution device displays the handwritten and input image on the display view of the terminal device on which the virtual space is displayed while associating the handwritten and input image with the character of the first user.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Applicant: GREE, INC.
    Inventors: Gaku MIZUKAMI, Ryohei YOSHIKAWA
  • Patent number: 11169655
    Abstract: An image distribution device receives, from a terminal device, a handwritten and input image including a trajectory handwritten and inputted by a first user in a state where a virtual space, in which characters of the first and a second user are present, is set as a background, to a display view of the terminal device on which the virtual space is displayed. By transmitting, to the terminal device, the received handwritten and input image as a message from the first user, the image distribution device displays the handwritten and input image on the display view of the terminal device on which the virtual space is displayed while associating the handwritten and input image with the character of the first user.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: November 9, 2021
    Assignee: GREE, INC.
    Inventors: Gaku Mizukami, Ryohei Yoshikawa