Electrophotographic photoreceptor

摘要

An electrophotographic photoreceptor, comprising a photosensitive layer formed on an electroconductive substrate, wherein the photosensitive layer comprises a resin having repeating units of the following formula (1): <CHEM> where, in the formula (1), A represents a plurality of bivalent groups including at least two members selected from the group consisting of bivalent groups of the following formulae (2), (3) and (4): <CHEM> <CHEM> <CHEM> where, in the formulae (2), (3) and (4), each of R<1> to R<24> which are independent of one another, represents a hydrogen atom, a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C1-10 alkoxyl group, a halogen atom, a halogenated alkyl group or a substituted or unsubstituted C6-20 aromatic group, and each of X<1>, X<2> and X<3> which may be the same or different, represents a single bond, a bivalent organic group of the formula (5), -O-, -S-, -CO-, -SO2- or -(CH2)s- (wherein S is an integer of from 2 to 5): <CHEM> where, in the formula (5), each of R<25> to R<29> which are independent of one another, represents a hydrogen atom, a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C1-10 alkoxyl group, a halogen atom, a halogenated alkyl group or a substituted or unsubstituted C6-20 aromatic group, provided that R<25> and R<26>, and R<27> and R<28>, may be bonded to each other to form a cycle, t is an integer of from 0 to 5, R<29> is a C1-10 alkyl group, a C1-10 alkoxyl group, a halogen atom, a halogenated alkyl group or a substituted or unsubstituted C6-20 aromatic group, and u is an integer of from 0 to 4.