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:
Dec. 19, 1989
Filed:
May. 25, 1988
Applicant:
Inventor:
Minoru Mabuchi, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 56 ; 430 58 ;
Abstract
An electrophotographic photosensitive member comprises a conductive support, and a photosensitive layer containing as azo pigment as a charge-generating material, wherein in a powder X-ray diffraction pattern of the azo pigment contained in said photosensitive layer the ratio (X) of the diffracted beam intensity at a maximum peak at 2.theta. of from 5.degree. to 20.degree. to the X-ray intensity at the background is 0.8 or more, provided that: