Patents by Inventor Oasamu Naruse

Oasamu Naruse 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).

  • Cleaning device, process cartridge, and image forming apparatus
    Patent number: 7873298
    Abstract: A cleaning device including a polarity control unit to control a charge polarity of residual toner particles, a cleaning member, a surface of which is movable, to electrostatically remove the residual toner particles, provided on a downstream side from the polarity control unit relative to a surface moving direction of an image bearing member, a toner collecting unit to collect the residual toner particles on the cleaning member, and a neutralizing member to neutralize the image bearing member, provided on a downstream side from the polarity control unit and an upstream side from the cleaning member relative to the surface moving direction of the image bearing member.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: January 18, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuyuki Yamashita, Hidetoshi Yano, Oasamu Naruse, Naomi Sugimoto, Kenji Sugiura
  • Cleaning device, process cartridge, and image forming apparatus
    Publication number: 20080170878
    Abstract: A cleaning device including a polarity control unit to control a charge polarity of residual toner particles, a cleaning member, a surface of which is movable, to electrostatically remove the residual toner particles, provided on a downstream side from the polarity control unit relative to a surface moving direction of an image bearing member, a toner collecting unit to collect the residual toner particles on the cleaning member, and a neutralizing member to neutralize the image bearing member, provided on a downstream side from the polarity control unit and an upstream side from the cleaning member relative to the surface moving direction of the image bearing member.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 17, 2008
    Inventors: Yasuyuki Yamashita, Hidetoshi Yano, Oasamu Naruse, Naomi Sugimoto, Kenji Sugiura