Patents by Inventor Takayoshi Yoshihara

Takayoshi Yoshihara 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: 4987451
    Abstract: The present invention discloses an image forming apparatus comprising an image forming unit attachable to the body of the image forming apparatus and having at least a developing device which has a toner receiving opening, a toner supply member attachable to the body of the image forming apparatus and having a toner supply opening opposed to the toner receiving opening at a predetermined position when the unit is attached to the body of the image forming apparatus for supplying toner to the developing device through the toner supply opening, a covering member for selectively covering the toner supply opening, a fixing member for fixing the unit to the body of the image forming apparatus, and a moving member disposed in the body of the image forming apparatus for moving the covering member so that the toner receiving opening is open when the unit is fixed to the body of the image forming apparatus by the fixing member.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: January 22, 1991
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Akihiro Hikosaka, Hitoshi Sakai, Takayoshi Yoshihara, Naoichi Asakura