Patents by Inventor Shinji Nosho

Shinji Nosho 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 photoconductor having a silicone resin charge retention layer
    Patent number: 4957839
    Abstract: An electrophotographic photoconductor is disclosed, which comprises an electroconductive layer, on which are formed in order, a photoconductive layer, a charge retention layer and a protective layer, optionally an adhesive layer between the charge retention layer and the protective layer, the charge retention layer comprising a silicone resin which comprises: (a) 50 wt. % to 80 wt. % of silicone and oxygen, (b) 10 wt. % to 30 wt. % of carbon, (c) 1 wt. % to 10 wt. % of hydrogen, and (d) 1 wt. % to 10 wt. % of nitrogen. The photoconductive layer may comprise an As-Se alloy, in which case, it is preferable that the amount of As be in the range of 33 wt. % to 38 wt. % and the balance thereof be Se in the As-Se alloy. Preferably the adhesive layer comprises a hardened material containing a metal alkoxide.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: September 18, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Rokutanzono, Yukio Ide, Hiroshi Nagame, Kouichi Ohshima, Narihito Kojima, Shinji Nosho