Patents by Inventor Masanari Norioka

Masanari Norioka 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).

  • Electrophotographic image forming apparatus, developing apparatus, and coupling member
    Patent number: 8688008
    Abstract: An image forming apparatus cartridge includes a casing and a developer roller having an axis L1, with the developer roller being rotatably supported in the casing to permit rotation about the axis L1. The cartridge also includes a first gear connected to the developer roller and a second gear in meshing engagement with the first gear. The cartridge further includes a coupling member having an axis L2, with the coupling member having (i) a first end portion connected to the second gear and operatively connected with the developer roller so as to be capable of transmitting a rotational force to the developer roller via the first and second gears, (ii) a second end portion having a recess formed therein and including at least two projections provided at diametrically opposed positions, and (iii) a connecting portion connecting the first end portion and the second end portion.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: April 1, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanari Norioka, Shigeo Miyabe, Takahito Ueno