Patents by Inventor Sohichi Abe

Sohichi Abe 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).

  • Developing device and image forming apparatus incorporating same
    Patent number: 9176430
    Abstract: A developing device includes a developer bearer to carry developer, disposed facing an image bearer, a developer conveyance member disposed facing the developer bearer, to agitate and supply developer to the developer bearer, a decompression portion surrounded by upper walls of the developing device and including multiple vents arranged in a longitudinal direction of the developing device and a filter. A number of the multiple vents is greater in either end portion than in a center portion in the longitudinal direction of the developing device.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideo Yoshizawa, Noriyuki Kimura, Yoshihiro Fujiwara, Yuki Oshikawa, Sohichi Abe
  • DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
    Publication number: 20140270838
    Abstract: A developing device includes a developer bearer to carry developer, disposed facing an image bearer, a developer conveyance member disposed facing the developer bearer, to agitate and supply developer to the developer bearer, a decompression portion surrounded by upper walls of the developing device and including multiple vents arranged in a longitudinal direction of the developing device and a filter. A number of the multiple vents is greater in either end portion than in a center portion in the longitudinal direction of the developing device.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 18, 2014
    Inventors: Hideo Yoshizawa, Noriyuki Kimura, Yoshihiro Fujiwara, Yuki Oshikawa, Sohichi Abe