Patents by Inventor Yu TSUCHIMURA

Yu TSUCHIMURA 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: 20230001730
    Abstract: A thermal transfer recording medium includes a base, a release layer disposed on or above the base, and a thermally fusible ink layer disposed on or above the release layer. The release layer includes wax and ethylene-propylene-ethylidene norbornene rubber.
    Type: Application
    Filed: December 25, 2020
    Publication date: January 5, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Takaki Hayashi, Yu Tsuchimura, Yoshihiko Hiyoshi
  • Patent number: 8592341
    Abstract: A reversible thermosensitive recording medium including: a support; a reversible thermosensitive recording layer on the support; and a protective layer on the reversible thermosensitive recording layer, wherein the reversible thermosensitive recording layer contains an electron-donating color-forming compound and an electron-accepting compound, wherein the protective layer contains a polyester acrylate resin, and wherein the protective layer has a glass transition temperature of 230° C. or higher and has an elongation of 10% or higher.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: November 26, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yu Tsuchimura, Satoshi Arai, Jun Maruyama
  • Patent number: 8530377
    Abstract: The present invention provides a thermoreversible recording medium which includes a support, a thermoreversible recording layer which comprises a thermoreversible composition containing an electron-donating color-forming compound and an electron-accepting compound, a metal compound-containing layer which includes a resin, an organic metal compound, and an inorganic layer compound, in which the resin is at least one selected from the group consisting of polyvinyl alcohol polymers, and ethylene-vinyl alcohol copolymers, and the organic metal compound is at least one selected from the group consisting of an organic titanium compound and an organic zirconium compound, and a protective layer which protects the metal compound-containing layer, wherein the support, the thermoreversible recording layer, the metal compound-containing layer and the protective layer are laminated in this order.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yu Tsuchimura, Satoshi Arai, Jun Maruyama, Yutaka Matsuoka
  • Publication number: 20120238446
    Abstract: A reversible thermosensitive recording medium including: a support; a reversible thermosensitive recording layer on the support; and a protective layer on the reversible thermosensitive recording layer, wherein the reversible thermosensitive recording layer contains an electron-donating color-forming compound and an electron-accepting compound, wherein the protective layer contains a polyester acrylate resin, and wherein the protective layer has a glass transition temperature of 230° C. or higher and has an elongation of 10% or higher.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 20, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yu TSUCHIMURA, Satoshi Arai, Jun Maruyama
  • Publication number: 20110130280
    Abstract: The present invention provides a thermoreversible recording medium which includes a support, a thermoreversible recording layer which comprises a thermoreversible composition containing an electron-donating color-forming compound and an electron-accepting compound, a metal compound-containing layer which includes a resin, an organic metal compound, and an inorganic layer compound, in which the resin is at least one selected from the group consisting of polyvinyl alcohol polymers, and ethylene-vinyl alcohol copolymers, and the organic metal compound is at least one selected from the group consisting of an organic titanium compound and an organic zirconium compound, and a protective layer which protects the metal compound-containing layer, wherein the support, the thermoreversible recording layer, the metal compound-containing layer and the protective layer are laminated in this order.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 2, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yu TSUCHIMURA, Satoshi ARAI, Jun MARUYAMA, Yutaka MATSUOKA