Patents by Inventor Chiharu Kamoshida

Chiharu Kamoshida 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).

  • Fixing roller for fixing unit, fixing unit, image forming apparatus, roller replacement aid for fixing unit, and method of replacing fixing roller in fixing unit
    Patent number: 8364062
    Abstract: In a fixing unit in which at least one of a heating roller and a pressing roller is provided as a fixing roller and is replaceably supported along the axial direction of the fixing roller, a sliding member is formed integrally to the inside of the fixing roller, so that the sliding member slides on the outer circumference of a roller guiding shaft upon replacing the fixing roller.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 29, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Chiharu Kamoshida, Sho Sawahata, Genichiro Kawamichi
  • Fixing roller for fixing unit, fixing unit, image forming apparatus, roller replacement aid for fixing unit, and method of replacing fixing roller in fixing unit
    Publication number: 20110052258
    Abstract: In a fixing unit in which at least one of a heating roller and a pressing roller is provided as a fixing roller and is replaceably supported along the axial direction of the fixing roller, a sliding member is formed integrally to the inside of the fixing roller, so that the sliding member slides on the outer circumference of a roller guiding shaft upon replacing the fixing roller.
    Type: Application
    Filed: August 17, 2010
    Publication date: March 3, 2011
    Inventors: Chiharu Kamoshida, Sho Sawahata, Genichiro Kawamichi
  • Fixing device and image forming apparatus provided with fixing device
    Patent number: 7406287
    Abstract: A disclosed fixing device includes: a heat roller unit having a rotatable roller having an elastic body on a surface thereof and a heating unit heating the roller; a pad disposed along a circumference of the elastic body of the heat roller; a belt member disposed on a curved surface of the pad, the belt member rotating by following a rotation of the heat roller; and a pressure member pressing the belt member to the heat roller using the pad, the fixing device causing a conveyed recording medium carrying a visualized image to pass through a space between the heat roller and the pressure member so as to fix the visualized image on the recording medium, wherein a curvature of the curved surface of the pad is changed in a central portion and end portions in an axial direction of the heat roller.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 29, 2008
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Hiroyoshi Matsumoto, Toshio Ogiso, Shigeru Obata, Masahiro Yagi, Chikara Hiraoka, Chiharu Kamoshida
  • FIXING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH FIXING DEVICE
    Publication number: 20070196145
    Abstract: A disclosed fixing device includes: a heat roller unit having a rotatable roller having an elastic body on a surface thereof and a heating unit heating the roller; a pad disposed along a circumference of the elastic body of the heat roller; a belt member disposed on a curved surface of the pad, the belt member rotating by following a rotation of the heat roller; and a pressure member pressing the belt member to the heat roller using the pad, the fixing device causing a conveyed recording medium carrying a visualized image to pass through a space between the heat roller and the pressure member so as to fix the visualized image on the recording medium, wherein a curvature of the curved surface of the pad is changed in a central portion and end portions in an axial direction of the heat roller.
    Type: Application
    Filed: February 20, 2007
    Publication date: August 23, 2007
    Inventors: Hiroyoshi MATSUMOTO, Toshio OGISO, Shigeru OBATA, Masahiro YAGI, Chikara HIRAOKA, Chiharu KAMOSHIDA