Patent ID: 8119317

Claim:
An electrophotographic photoreceptor, comprising: an electroconductive substrate; a photosensitive layer, located overlying the electroconductive substrate; and a crosslinked resin surface layer, located overlying the photosensitive layer, wherein the crosslinked resin surface layer comprises a crosslinked body comprising trimethylolpropanetriacrylate, isocyanate including a radical polymerizable functional group and a heat or a light-curable charge transport material, wherein the crosslinked resin surface layer comprises the heat or light-curable charge transport material having the following formula (4) in an amount not less than 5% and less than 60% by weight: wherein R 9 and R 10 independently represent a substituted or an unsubstituted aryl group; Ar 6 and Ar 7 represent an arylene group, e.g., independently represent a bivalent group of the same aryl group as that of R 9 and R 10 ; and X represents any one of the following (a) to (c): (a) an alkylene group; (b) an arylene group; (c) a group having the following formula (3); and wherein Y represents —O—, —S—, —SO—, —SO 2 —, —CO—, wherein R 5 and R 6 independently represent a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, an aryl group, an amino group, a nitro group or a cyano group; and p, q, r and s independently represent an integer of from 1 to 12.