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:
Nov. 21, 1989
Filed:
Sep. 12, 1988
Applicant:
Inventors:
Katsugi Kitatani, Kanagawa, JP;
Satoshi Hoshi, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G09B / ;
U.S. Cl.
CPC ...
430 56 ; 430 58 ; 430 59 ; 430 71 ; 430 72 ; 430 76 ; 430 78 ; 534738 ; 534754 ; 534755 ; 534806 ;
Abstract
Disclosed are a photoconductive composition containing a new tetrakisazo compound of the following formula (1) and an electrophotographic photoreceptor having a photosensitive layer which contains the tetrakisazo compound of the formula (1): ##STR1## wherein R.sup.11, R.sup.12, A, Ar.sup.1, Ar.sup.2, Ar.sup.3, Ar.sup.4, Ar.sup.5, and Ar.sup.6 are defined hereinbefore. The electrophotographic photoreceptor has both high sensitivity and high durability, and the sensitivity thereof is barely lowered even after repeated use.