Patents by Inventor Masaakii Matsushita

Masaakii Matsushita 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).

  • Developer accommodating unit, process cartridge and electrophotographic image forming apparatus
    Patent number: 8867955
    Abstract: A developer accommodating unit includes a flexible developer accommodating container sealed with a sealing member at its developer discharging opening; a rotatable unsealing member for removing the sealing member from the opening; a drive transmission member for transmitting a rotational force to the unsealing member, wherein the drive transmission member is mounted at one longitudinal end portion of the unsealing member and is rotatably assembled with a frame; and a supporting member for supporting the unsealing member when the unsealing member is assembled. The supporting member includes a preventing portion for preventing the unsealing member from dropping from the supporting member. In a state in which the drive transmission member is assembled with the frame, a gap between the unsealing member and the supporting member is larger than a gap between the drive transmission member and the frame. The unsealing member is spaced from the supporting member.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Yamaguchi, Hiroomi Matsuzaki, Masaakii Matsushita, Junichi Matsumura