Patents by Inventor Tsuyoshi Imanura

Tsuyoshi Imanura 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 including a magnetic brush developing system using a two-component developer comprising toner and carrier
    Patent number: 7457570
    Abstract: It is an object of the present invention to provide a process unit and an image forming apparatus in which generation of loss of image density due to flying off of developer and the edge effect occurring as a side-effect under developing conditions aimed at improving development performance can be reduced, even when a DC bias development system is adopted, and which can suppress developing density unevenness caused by impact occurring on contact of the teeth of gears in the drive system.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 25, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Kasai, Hideki Kimura, Tsuyoshi Imanura, Katsumi Masuda, Hideo Yoshizawa, Kiyotaka Sakai
  • Image forming apparatus
    Publication number: 20060029435
    Abstract: It is an object of the present invention to provide a process unit and an image forming apparatus in which generation of loss of image density due to flying off of developer and the edge effect occurring as a side-effect under developing conditions aimed at improving development performance can be reduced, even when a DC bias development system is adopted, and which can suppress developing density unevenness caused by impact occurring on contact of the teeth of gears in the drive system.
    Type: Application
    Filed: August 5, 2005
    Publication date: February 9, 2006
    Inventors: Tadashi Kasai, Hideki Kimura, Tsuyoshi Imanura, Katsumi Masuda, Hideo Yoshizawa, Kiyotaka Sakai