Patent ID: 7507509

Claim:
An electrophotographic photoreceptor, comprising a crosslinked material comprising units obtained from: a radical polymerizing monomer A having three or more radical polymerizing groups in an amount of 20-80%; a compound B having the following formula (1): B 1 —Ar 1 —CH═CH—Ar 2 —B 2 (1) wherein Ar 1 represents a substituted or an unsubstituted monovalent group or bivalent group formed of an aromatic hydrocarbon skeleton; Ar 2 represents a monovalent group or a bivalent group formed of an aromatic hydrocarbon skeleton or heterocyclic compound skeleton having one or more tertiary amino groups; and wherein at least one of B 1 and B 2 is a hydrogen atom, and the other when not hydrogen is an acryloyloxy group; a methacryloyloxy group; a vinyl group; an alkyl group having an acryloyloxy group, a methacryloyloxy group or a vinyl group; or an alkoxy group having an acryloyloxy group, a methacryloyloxy group or a vinyl group; and optionally a photo polymerization initiator.