Patent ID: 6790574
Filing Date: 2004-09-14
Classification: G03G

Abstract:
An electrophotographic photoreceptor having at least one indane compound of the following formula (1) and at least one polycarbonate resin of the following formula (4) in a weight ratio of from 2:8 to 7:3 on an electroconductive support;said at least one indane compound being expressed by the formula (1), (wherein Ar1 is a substituted or unsubstituted aryl group, Ar2 is a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted biphenylene group or a substituted or unsubstituted anthrylene group, W is a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, X is a substituted or unsubstituted aryl group, a monovalent group of the formula (2), or a monovalent group of the formula (3), (wherein R1 is a hydrogen atom, a lower alkyl group or a lower alkoxy group, R2 is a hydrogen atom, a halogen atom or a lower alkyl group, Y is a hydrogen atom or a substituted or unsubstituted aryl group, and m and n are an integer of from 0 to 4)), andsaid at least one polycarbonate resin being expressed by the formula (4), (wherein R3 and R4 are respectively independently a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, R3 and R4 together may form a ring, R5, R6, R7, R8, R9, R10, R11 and R12 are respectively independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a halogen atom, p is a positive integer, q is 0 or a positive integer, p and q satisfy the formula 0&lE;q/p&lE;2, Z is a substituted or unsubstituted C1-C5 alkylene group, a substituted or unsubstituted 4,4â€²-biphenylene group or a divalent group of the formula (5), (wherein R13 and R14 are respectively independently a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, R13 and R14 together may form a ring, R15, R16, R17 and R18 are respectively independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a halogen atom, and r is 0 or an integer of from 1 to 3)),provided that when only one kind of polycarbonate resin is used, the polycarbonate resin of the formula (4) does not have a structure wherein R3 and R4 are a methyl group, R5, R6, R7, R8, R9, R10, R11 and R12 are a hydrogen atom, and q is 0.