Patents by Inventor Shiho Kuboshima

Shiho Kuboshima 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: 9141007
    Abstract: Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming device using such a monolayer type photoconductor. A monolayer type photoconductor including a base body and a single photo sensitive layer formed on the base body, the single photo sensitive layer containing a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin, wherein a maximum absorption wavelength (?max) of the photo sensitive layer is set to a value of below 850 nm and an absorbance (A850) of light at a wavelength of 850 nm per unit thickness of the photo sensitive layer is set to a value of 0.05 ?m?1 or less.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: September 22, 2015
    Assignee: Kyocera Mita Corporation
    Inventors: Kazunari Hamasaki, Yuko Iwashita, Daisuke Kuboshima, Keiji Maruo, Shiho Kuboshima
  • Patent number: 7754402
    Abstract: The present invention provides an electrophotographic photoconductive member comprising a substrate, and a photoconductive layer containing a hole transferring material, a charge generating material and a binder resin, wherein a value (IV/OV value) in which the inorganic value is divided by the organic value of the binder resin is 0.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: July 13, 2010
    Assignee: Kyocera Mita Corporation
    Inventors: Kazunari Hamasaki, Shiho Kuboshima, Daisuke Kuboshima, Yuko Iwashita
  • Publication number: 20080305418
    Abstract: Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming device using such a monolayer type photoconductor. A monolayer type photoconductor including a base body and a single photo sensitive layer formed on the base body, the single photo sensitive layer containing a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin, wherein a maximum absorption wavelength (?max) of the photo sensitive layer is set to a value of below 850 nm and an absorbance (A850) of light at a wavelength of 850 nm per unit thickness of the photo sensitive layer is set to a value of 0.05 ?m?1 or less.
    Type: Application
    Filed: March 13, 2008
    Publication date: December 11, 2008
    Applicant: Kyocera Mita Corporation
    Inventors: Kazunari Hamasaki, Yuko Iwashita, Daisuke Kuboshima, Keiji Maruo, Shiho Kuboshima
  • Publication number: 20080187368
    Abstract: A drum unit (20) for forming a toner image includes a cylindrical-shaped metal tubular member (31), a flange member (40) attached to one end of the metal tubular member (31) and a ground plate (50) attached to the flange member (40) and having an outer peripheral edge formed with a connection claw (52) that is so bent by the inner peripheral surface of the metal tubular member (31) as to bite into the inner peripheral surface for establishment of electrical conduction between the metal tubular member (31) and the ground plate (50). The flange member (40) has an edge, and the bending of the connection claw is carried out about a support point (412) defined by the edge. A calculational bending angle (?) at which the connection claw (52) is bent about the support point (412) is set in the range of 10 to 45 degrees.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 7, 2008
    Applicant: Kyocera Mita Corporation
    Inventors: Yukimasa Watanabe, Shiho Kuboshima, Hiroyuki Hazama, Kazunari Hamasaki, Sakae Saito
  • Publication number: 20080153020
    Abstract: The present invention provides an electrophotographic photoconductive member comprising a substrate, and a photoconductive layer containing a hole transferring material, a charge generating material and a binder resin, wherein a value (IV/OV value) in which the inorganic value is divided by the organic value of the binder resin is 0.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 26, 2008
    Applicant: Kyocera Mita Corporation
    Inventors: Kazunari Hamasaki, Shiho Kuboshima, Daisuke Kuboshima, Yuko Iwashita