Electrophotograhic photoreceptor.

摘要

An electrophotographic photoreceptor comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive material and a binder resin is disclosed, wherein the binder resin comprises (A) at least one resin having a weight average molecular weight of from 1x10<3> to 2x10<4> and containing from 0.1 to 20% by weight of a copolymerizable component containing at least one acidic group selected from the group consisting of -PO3H2, -COOH, -SO3H, <CHEM> wherein R represents a hydrocarbon group or -OR min ; and R min represents a hydrocarbon group, and a cyclic acid anhydride-containing group, and (B) at least one copolymer resin comprising a monofunctional macromonomer having a weight average molecular weight of 2x10<4> or less, the macromonomer containing at least one polymerizable component represented by formula (B-2) or (B 3): <CHEM> <CHEM> wherein X0 represents -COO-, -OCO-, -CH2OCO-, -CH2COO-, -O-, -SO2-, -CO-, <CHEM> wherein R1 represents a hydrogen atom or a hydrocarbon group; Q0 represents an aliphatic group having from 1 to 18 carbon atoms or an aromatic group having from 6 to 12 carbon atoms; b1 and b2, which may be the same or different, each represents a hydrogen atom a halogen atom, a cyano group, a hydrocarbon group, -COO-Z or -COO-Z bonded via a hydrocarbon group, wherein Z represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group; and Q represents -CN, -CONH2 or <CHEM> wherein Y represents a hydrogen atom, a halogen atom, an alkoxyl group or -COOZ min , wherein Z min represents an alkyl group, an aralkyl group or an aryl group, with a polymerizable double bond-containing group represented by formula (B-1): <CHEM> wherein V has the same meaning as X0; and a1 and a2, which may be the same or different, each has the same meaning as b1 and b2, being bonded to only one of terminals of the main chain thereof, and a monomer represented by formula (B-4): <CHEM> wherein X1 has the same meaning as X0; Q1 has the same meaning as Q0; and c1 and c2, which may be the same or different, each has the same meaning as b1 and b2. The photoreceptor exhibits excellent electrostatic characteristics, image formation performance as well as printing properties, irrespective of change in environmental condition or the kind of sensitizing dyes to be used in combination.