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:
Jun. 15, 1993
Filed:
Aug. 08, 1991
Akira Itoh, Tsukuba, JP;
Hideki Nagamura, Tsukuba, JP;
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
The invention provides an electrophotographic photoreceptor of high sensitivity and high endurance which comprises a conductive support and a light-sensitive layer which contains at least one bis-azo compound selected from the group consisting of those represented by the following formulas (I)-(II): ##STR1## wherein n represents 0, 1, or 3; R.sup.1 represents a halogen atom, a hydroxyl group, or an alkyl, aralkyl, aryl, hyterocyclic or alkoxy group which may have a substituent and when n is 2 or 3, R.sup.1 may be identical or different; R.sup.2 represents a hydrogen atom, a halogen atom, a cyano group, or an ester, alkyl, aralkyl or aryl group which may have a substituent; R.sup.3 represents an alkyl, aralkyl, aryl or heterocyclic group which may have a substituent; Ar represents an arylene which may have a substituent; and A.sup.1 and A.sup.2 each represents an aryl or heterocyclic group which has a hydroxyl group and may be identical or different.