Patents by Inventor Keibun Ejima

Keibun Ejima 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 sensitive member
    Patent number: 4689284
    Abstract: The present invention relates to improvements in a substrate for producing an electrophotographic sensitive member having a photoconductive layer formed with amorphous silicon. An electrophotographic sensitive member, which is superior in moldability, corrosion resistance, strength, charging electric potential and the like, is formed when an aluminium material, which contains at least one of iron and manganese or a combination of each at 0.30 or less % by weight, is used as a substrate on which a photoconductive layer formed with amorphous silicon is laminated; and/or the surface roughness of said substrate is 0.5 S or less; and/or an aluminium substrate containing magnesium at 0.5 to 10.0% by weight is used.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: August 25, 1987
    Assignees: Kyocera Corporation, Takao Kawamura
    Inventors: Takao Kawamura, Keibun Ejima, Naooki Miyamoto, Hisashi Higuchi, Yasuo Nishiguchi