Patents by Inventor Masaru Katagiri

Masaru Katagiri 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: 10627749
    Abstract: A voltage maintenance element is connected to a contact member that contacts a primary transfer surface area of an intermediate transfer belt to which toner images are transferred from a plurality of image carriers between stretch members, in such a way as to prevent the electric potential of the intermediate transfer belt from varying between respective image forming stations.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Katagiri, Yuji Kawaguchi, Masaru Ohno, Tsuguhiro Yoshida, Takeo Kawanami, Taro Minobe, Masaru Shimura
  • Publication number: 20190302639
    Abstract: A controller which causes a light emitting element to continuously perform minute emission for a plurality of dots in a level in which toner is not attached to a non-image section on an image bearing member is provided. The controller controls a first driving current for an image section and controls a second driving current used to perform the minute emission by the light emitting element in the non-image section several times in one job. In the image section, a driving current obtained by adding the first driving current to the second driving current is supplied so that the light emitting element emits light.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 3, 2019
    Inventors: Kiyoto Toyoizumi, Masaru Shimura, Shinsuke Kobayashi, Hideo Nanataki, Shinji Katagiri, Yasunari Watanabe, Hideaki Hasegawa, Masahiro Tambo
  • Patent number: 10372058
    Abstract: A controller which causes a light emitting element to continuously perform minute emission for a plurality of dots in a level in which toner is not attached to a non-image section on an image bearing member is provided. The controller controls a first driving current for an image section and controls a second driving current used to perform the minute emission by the light emitting element in the non-image section several times in one job. In the image section, a driving current obtained by adding the first driving current to the second driving current is supplied so that the light emitting element emits light.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 6, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kiyoto Toyoizumi, Masaru Shimura, Shinsuke Kobayashi, Hideo Nanataki, Shinji Katagiri, Yasunari Watanabe, Hideaki Hasegawa, Masahiro Tambo
  • Publication number: 20190137910
    Abstract: A voltage maintenance element is connected to a contact member that contacts a primary transfer surface area of an intermediate transfer belt to which toner images are transferred from a plurality of image carriers between stretch members, in such a way as to prevent the electric potential of the intermediate transfer belt from varying between respective stations.
    Type: Application
    Filed: December 17, 2018
    Publication date: May 9, 2019
    Inventors: Shinji Katagiri, Yuji Kawaguchi, Masaru Ohno, Tsuguhiro Yoshida, Takeo Kawanami, Taro Minobe, Masaru Shimura
  • Patent number: 4509067
    Abstract: An additional N.sup.+ region is provided in a P type substrate adjacent to a protective N.sup.+ resistor region with an insulating layer and metal layer interposed between the N.sup.+ region and the N.sup.+ resistor region. The N.sup.+ resistor region, the oxide layer, the polysilicon layer and N.sup.+ region constitute an MOS transistor, respectively corresponding to a drain region, a gate insulating layer, a gate electrode and a source region of the MOS transistor. When a very high excessive voltage that otherwise would destroy the PN junction between the substrate and the resistor region is applied to the input terminal, the MOS transistor is rendered conductive and the excessive voltage is absorbed.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: April 2, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Kenji Minami, Masaru Katagiri, Hideo Noguchi