Patent ID: 8568945
Filing Date: 2013-10-29
Classification: G03G

Abstract:
1. An electrophotographic photoreceptor, comprising a charge generation layer over an electroconductive substrate, and a charge transport layer on the charge generation layer, wherein the charge generation layer comprises titanylphthalocyanine and a binder resin which is a crosslinked material of a resin comprising a polyvinylbutyral site having the following formula (1) and an isocyanate compound having the following formula (4): wherein R1 and R2 independently represent an alkyl group having 1 to 3 carbon atoms; k, l, m and n represent composition ratios and k+1 is from 0.60 to 0.80, wherein k or 1 may be 0, m is from 0.02 to 0.03, and n is from 0.20 to 0.40; wherein A 3 represents a substituted or an unsubstituted non-aromatic hydrocarbon group or an aryl group; Ar 1 represents a substituted or an unsubstituted aromatic ring; R 3 and R 4 independently represent a divalent organic group having 1 to 3 carbon atoms when A 3 is a non-aromatic hydrocarbon group and a single bond when A 3 is an aryl group; and q represents an integer of from 2 to 4.