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. 27, 1994
Filed:
Jun. 14, 1993
Akira Itoh, Tokyo, JP;
Hideki Nagamura, Tokyo, JP;
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
The present invention provides an electrophotographic photoreceptor high in sensitivity and endurance and highly resistant against oxidizing action with ozone or the like which comprises an electrically conductive support and, provided thereon, a light-sensitive layer which contains at least one azo compound containing a coupler component represented by the following formula [I] or [II]: ##STR1## wherein X represents a heterocyclic or aromatic ring residue which may have a substituent fusing with the benzene ring, Y represents a linkage group, R.sup.1 -R.sup.4 each represents a hydrogen atom or an alkyl group and R.sup.5 represents a hydrogen atom or an alkyl, aralkyl or acyl group which may have a substituent; ##STR2## wherein X and Y are as defined above and R.sup.6 and R.sup.7 each represents a hydrogen atom or an alkyl group which may have a substituent.