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:
Feb. 19, 1985
Filed:
Mar. 22, 1984
Applicant:
Inventors:
Shozo Ishikawa, Sayama, JP;
Kazuharu Katagiri, Mitaka, JP;
Katsunori Watanabe, Yamato, JP;
Kiyoshi Sakai, Mitaka, JP;
Makoto Kitahara, Yokohama, JP;
Assignees:
Copyer Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
430 59 ; 430 58 ; 430 77 ; 430 78 ; 430 79 ; 534560 ; 534655 ; 534759 ; 534797 ;
Abstract
An electrophotographic photosensitive member comprises a layer containing at least one disazo pigment represented by the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent hydrogen, halogen, lower alkyl or lower alkoxy; R.sub.3 represents methyl, ehtyl or C.sub.3 -C.sub.10 linear alkyl; and X represents a residue necessary to complete an aromatic hydrocarbon ring or heterocyclic ring, substituted or unsubstituted.