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:
Apr. 05, 1988
Filed:
Apr. 01, 1986
Applicant:
Inventors:
Masataka Yamashita, Kawasaki, JP;
Takao Takiguchi, Tokyo, JP;
Shoji Umehara, Fuchu, JP;
Masakazu Matsumoto, Yokohama, JP;
Shozo Ishikawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 58 ; 430 59 ; 430 72 ; 430 73 ; 430 75 ; 430 76 ; 430 77 ; 430 78 ; 430 79 ; 534689 ; 534691 ; 534754 ; 534755 ; 534809 ;
Abstract
An electrophotographic photosensitive member comprises a photosensitive layer containing an azo pigment selected from the following general formulae (1) to (5): ##STR1## wherein groups Ar are arylene groups and divalent heterocyclic groups, each of which may contain a substituent; n is 0 or 1; and group A is a coupler residue group having a phenolic OH group.