Patents by Inventor Toshiyuki Yoshihara

Toshiyuki Yoshihara 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).

  • Electrophotographic member with surface layer having fluorine resin powder and fluorine graft polymer
    Patent number: 4792507
    Abstract: An electrophotographic photosensitive member having a photosensitive layer on an electroconductive substrate comprises a surface layer containing a fluorine type resin powder and a fluorine type graft polymer.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: December 20, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Yoshihara, Masaaki Hiro, Tomohiro Kimura
  • Electrophotographic member with silicone graft copolymer in surface layer
    Patent number: 4716091
    Abstract: An image holding member has a surface layer containing a silicone type comb shaped graft polymer having a silicone portion at the side chain.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: December 29, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Yoshihara, Masaaki Hiro, Katsunori Watanabe
  • Coating method
    Patent number: 4606949
    Abstract: A coating method characterized in that an object of coating is dipped in a coating liquid so as to be positioned in the region surrounded by a helical agitator blade which is being revolved around the axis of the helix in the coating liquid to uniform the composition thereof.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: August 19, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Yoshihara, Yuichi Yashiki, Motomu Horii, Mutsuo Ohtaka
  • Electrophotographic process
    Patent number: 4533232
    Abstract: An electrophotographic process comprising the steps of:(a) charging an electrophotographic photosensitive member comprising a conductive substrate and a photosensitive layer which includes a charge generation layer and a charge transport layer containing a charge-transporting material;(b) forming an image on the charged electrophotographic photosensitive member by exposing the charged photosensitive member to light substantially free of rays having the wavelength band which can be absorbed by the charge-transporting material contained in the charge transport layer; and(c) developing the image with a developer.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: August 6, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoto Fujimura, Akihiro Sonobe, Toshiyuki Yoshihara, Norie Takebayashi, Takashi Tanaka, Masaki Kuribayashi
  • Electrophotographic CdS photosensitive member with acrylic resin binder
    Patent number: 4517271
    Abstract: An electrophotographic photosensitive member has a photoconductive layer composed of cadmium sulfide bonded with a binder resin which is an acrylic resin having a glass transition point of 15.degree. to 70.degree. C. and an acid value of 10-40.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: May 14, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Hirooka, Keiji Kubo, Toshiyuki Yoshihara