Patents by Inventor KEIZOH KITAMURA

KEIZOH KITAMURA 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).

  • Toner cartridge and image forming apparatus
    Patent number: 10466624
    Abstract: A toner cartridge includes a screw configured to send stirred toner to an outlet through which the toner is discharged. The toner cartridge includes a partition between the screw and a toner stirrer. The toner stirrer at a default position is in contact with a top of the partition and covers the screw from above to define a closed space around the screw. The closed space is separate from a remaining space having the toner therein. The closed space is in communication with the remaining space when the toner stirrer rotates from the default position to be away from the toner transport screw, enabling the toner to move toward the toner transport screw.
    Type: Grant
    Filed: December 1, 2018
    Date of Patent: November 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Keizoh Kitamura, Yasuyuki Ishiguro
  • TONER CARTRIDGE AND IMAGE FORMING APPARATUS
    Publication number: 20190171132
    Abstract: A toner cartridge includes a screw configured to send stirred toner to an outlet through which the toner is discharged. The toner cartridge includes a partition between the screw and a toner stirrer. The toner stirrer at a default position is in contact with a top of the partition and covers the screw from above to define a closed space around the screw. The closed space is separate from a remaining space having the toner therein. The closed space is in communication with the remaining space when the toner stirrer rotates from the default position to be away from the toner transport screw, enabling the toner to move toward the toner transport screw.
    Type: Application
    Filed: December 1, 2018
    Publication date: June 6, 2019
    Inventors: KEIZOH KITAMURA, YASUYUKI ISHIGURO