The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1992
Filed:
Mar. 20, 1989
Applicant:
Inventor:
Kouichi Aizawa, Matsumoto, JP;
Assignee:
Fuji Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 67 ; 430 66 ;
Abstract
An electrophotographic photoreceptor of laminate-type comprises in sequence a conductive substrate, a carrier transport layer and carrier generation layer, both of an organic substance, and a surface protective layer. The surface protective layer exhibits greatly improved humidity resistance and comprises either a fluorine-containing acrylic graft copolymer or a urethane resin such that the layer has a pure water contact angle of at least 70 degrees.