Patents by Inventor Kazuoki Katayama

Kazuoki Katayama 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).

  • Patent number: 10303082
    Abstract: An image forming apparatus executes an image formation process through which a developer image is formed on an image carrier by developing an electrostatic latent image while rotating a developer carrier in a forward direction, a voltage controller controls development and regulating voltages after the image formation process such that a magnitude relationship between the development regulating voltages becomes inverted from that during the image formation process, and after finishing the image formation process, in a state where the magnitude relationship between the development and regulating voltages is inverted from that during the image formation, the drive controller rotates the developer carrier in the forward direction for a prescribed period, and afterwards rotates the developer carrier in a reverse direction for another prescribed period.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 28, 2019
    Assignee: Oki Data Corporation
    Inventors: Fumitaka Ozeki, Takuya Goto, Kentaro Hasegawa, Susumu Yamamoto, Kazuoki Katayama, Tsukasa Hirayama, Hisashi Soga
  • Publication number: 20180113397
    Abstract: An image forming apparatus executes an image formation process through which a developer image is formed on an image carrier by developing an electrostatic latent image while rotating a developer carrier in a forward direction, a voltage controller controls development and regulating voltages after the image formation process such that a magnitude relationship between the development regulating voltages becomes inverted from that during the image formation process, and after finishing the image formation process, in a state where the magnitude relationship between the development and regulating voltages is inverted from that during the image formation, the drive controller rotates the developer carrier in the forward direction for a prescribed period, and afterwards rotates the developer carrier in a reverse direction for another prescribed period.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 26, 2018
    Inventors: Fumitaka OZEKI, Takuya GOTO, Kentaro HASEGAWA, Susumu YAMAMOTO, Kazuoki KATAYAMA, Tsukasa HIRAYAMA, Hisashi SOGA
  • Patent number: 8965247
    Abstract: A fixation unit includes a fixation member and a housing containing therein the fixation member. The fixation member is configured to thermally fix a developer image onto a medium being conveyed from an image formation unit to the fixation unit along a medium conveyance path, wherein the developer image is formed at the image formation unit and transferred onto the medium by the image formation unit. The developer attachment member is replaceably provided to the fixation unit and configured to attach thereto a part of the developer that is scattered in the neighborhood of the conveyance path.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: February 24, 2015
    Assignee: Oki Data Corporation
    Inventor: Kazuoki Katayama
  • Publication number: 20130322895
    Abstract: A fixation unit includes a fixation member and a housing containing therein the fixation member. The fixation member is configured to thermally fix a developer image onto a medium being conveyed from an image formation unit to the fixation unit along a medium conveyance path, wherein the developer image is formed at the image formation unit and transferred onto the medium by the image formation unit. The developer attachment member is replaceably provided to the fixation unit and configured to attach thereto a part of the developer that is scattered in the neighborhood of the conveyance path.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Applicant: Oki Data Corporation
    Inventor: Kazuoki Katayama