Patents by Inventor Yasuhi Sato

Yasuhi Sato 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).

  • Developing apparatus having developer carrying roller with carbon fibers in surface layer
    Patent number: 5027745
    Abstract: A developing apparatus including a developing roller for carrying an one component developer to a developing zone for developing an electrostatic latent image. The developing roller is provided with a surface layer which contains long carbon fibers extending substantially parallel to the axis of the developing roller or extending in a direction inclined relative to the roller axis, and a binder for binding the carbon fibers.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 2, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Michihito Yamazaki, Katsuhiko Nishimura, Keiji Okano, Kouichi Suwa, Yasuhi Sato, Kimio Nakahata