Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and electrophotographic apparatus including the photoreceptor

A photoreceptor for electrophotography, comprising:

• a conductive substrate;
• and
• a photosensitive layer that is provided on the conductive substrate and that contains at least:
• a resin binder comprised of a polycarbonate resin formed from a copolymer having structural units expressed by general formulae (1) and (2) below;
• a charge transport material comprised of at least one type of stilbene compound expressed by general formula (3) below, and
• an additive comprised of at least one type of diester compound expressed by general formula (6) below:
• where, in general formula (1), R1 and R2 may be identical or different and each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a halogen atom, a substituted or non-substituted aryl group having 6 to 12 carbon atoms, or an alkoxy group having 1 to 12 carbon atoms, c is an integer of 0 to 4, X is a single bond, —O—, —S—, —SO—, —CO—, —SO2—, or CR3R4— (in which R3 and R4 may be identical or different and each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a halogenated alkyl group, or a substituted or non-substituted aryl group having 6 to 12 carbon atoms), a substituted or non-substituted cycloalkylidene group having 5 to 12 carbon atoms, a substituted or non-substituted a w alkylene group having 2 to 12 carbon atoms, a -9,9-fluorenylidene group, a substituted or non-substituted arylene group having 6 to 12 carbon atoms, or a bivalent radical containing an aryl group or arylene group having 6 to 12 carbon atoms, and m and n represent mole fractions of monomers, respectively,
• where, in general formula (3), R5 and R6 may be identical or different and each represents a substituted or an unsubstituted alkyl group, or a methoxy group, and Ar1, Ar2, and Ar3 each represents hydrogen,
• where, in general formula (6), A is any organic group represented by formula (7) below, and B is any organic group represented by formula (8) below,