Patents by Inventor Tetsuhisa Furukawa

Tetsuhisa Furukawa 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).

  • Patent number: 3969785
    Abstract: A residual toner removing apparatus which generally comprises four sections communicating with one another, i.e., a cleaner section including a cleaner brush rotatably provided in a housing which has an opening adjacent to a photoreceptor surface, and a duct section which extends from the above housing to a filter section which is in turn followed by a suction section having a fan. Toner particles removed from the photoreceptor surface by the cleaner brush are dislodged from the brush bristles upon contact with a flicker rod to which an air flow regulating plate is fixed and efficiently carried by air flows, through proper gaps, air passages or a slit, into the filter section in which a filter is enclosed.
    Type: Grant
    Filed: April 22, 1974
    Date of Patent: July 20, 1976
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Masaya Ogawa, Tetsuhisa Furukawa