Patents by Inventor Kenichi Wantanabe

Kenichi Wantanabe 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 forming apparatus
    Patent number: 5832340
    Abstract: In an image forming apparatus having an auto power-off function, the durability of a roller of a heat fusing member or the like is improved. Before a lapse of a specified time .DELTA.t from a time T at which an auto power-off timer stops time counting, a fusing roller is driven for the time .DELTA.t. By this operation, the fusing roller is consistently driven within the set time of the auto power-off timer, thereby reducing a continuous stress in a nip portion of the fusing roller.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 3, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Yoshifumi Kosagi, Kenichi Wantanabe