Patents by Inventor Shigeo Kumura

Shigeo Kumura 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).

  • Image fixing apparatus with roughened film in sliding contact with heater
    Patent number: 5051784
    Abstract: An image fixing apparatus includes a heater which is stationary in use; a film for sliding contact with the heater and movable together with a recording material, wherein the recording material has a visualized image, which is heated through the film by heat from the heater; and wherein that surface of the film for sliding contact with the heater has a surface roughness of 0.5-7 microns at least in a direction perpendicular to a movement direction of the film.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: September 24, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yamamoto, Shigeo Kumura, Kensaku Kusaka, Hidekazu Maruta, Hiroyuki Adachi