Patent ID: 7387862

Claim:
An electrophotographic photoreceptor comprising: an electrically conductive substrate; and a photosensitive layer including a photoconductive layer containing a charge generation material and a charge transport material, disposed on the electrically conductive substrate, wherein the photoconductive layer includes 1 part by weight or more and 20 parts by weight or less of an amine compound represented by the following general formula (1) relative to 100 parts by weight of a charge transport material: wherein R 1 and R 2 , respectively, represent an alkyl group having 1 to 4 carbon atoms; R 3 and R 4 , respectively, represent an alkyl group that has 1 to 8 carbon atoms and may have an alkoxycarbonyl group having 2 to 5 carbon atoms as a substituent group, or a phenylalkyl group having 7 to 9 carbon atoms; and X, when n is 1, represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkylthio group having 1 to 4 carbon atoms, an alkylsulfonyl group having 1 to 4 carbon atoms, a phenylthio group, a phenoxy group or a substituted amino group represented by —NR 5a R 6a , wherein R 5a and R 6a , respectively, represent an alkyl group having 1 to 12 carbon atoms, an alkyl group that has 2 to 4 carbon atoms and alkoxy group having 1 to 4 carbon atoms as a substituent group, an aryl group or an alkylene group that has 4 to 5 carbon atoms and, when couples each other, may have an oxygen atom, an imino group or a N-alkylimino group having 1 to 4 carbon atoms between carbon atoms; and, when n is 2, represents —O—, —S— or an alkylene group having 1 to 4 carbon atoms.