Electrophotographic light-sensitive material.

摘要

An electrophotographic light-sensitive material comprising a support having thereon a photoconductive layer containing at least inorganic photoconductive particles and a binder resin, wherein the binder resin contains (A) at least one resin comprising a graft copolymer having a weight average molecular weight of from 1.0 x 10<3> to 2.0 x 10<4> and containing, as copolymer components, at least (i) a monofunctional macromonomer (M) having a weight average molecular weight of not more than-2 x 10<4> and containing at least one polymer component represented by formula (IIa) or (IIb) shown below and at least one polymer component having at least one polar group selected from the group consisting of -COOH, -PO3H2, -SO3H, -OH, and <CHEM> wherein R1 represents a hydrocarbon group or -OR2 (wherein R2 represents hydrocarbon group), with a polymerizable double bond group represented by formula (I) shown below being bonded to one terminal of the main chain thereof, and (ii) a monomer represented by formula (III) shown below, and (B) at least one resin having a weight average molecular weight of not less than 5 x 10<4>, containing at least a recurring unit represented by formula (IV) shown below as a polymer component, and having a crosslinked structure <CHEM> wherein X0 represents -COO-, -OCO-, -CH2OCO-, -CH2COO-, -O-, -SO2-, -CO-, -CONHCOO-, -CONHCONH-, -CONHSO2-, <CHEM> wherein R11 represents a hydrogen atom or a hydrocarbon group; a1 and a2, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group, -COO-Z1, or -COO-Z1 bonded through a hydrocarbon group (wherein Z1 represents a substituted or unsubstituted hydrocarbon group. <CHEM> wherein X1 has the same meaning as X0; Q1 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 has the same meaning as a1 and a2; V represents -CN, -CONH2, or <CHEM> wherein Y represents a hydrogen atom, a halogen atom, a hydrocarbon group, an alkoxyl group, or -COOZ2, wherein Z2 represents an alkyl group, an aralkyl group, or an aryl group. <CHEM> wherein X2 has the same meaning as X0 in formula (I); Q2 has the same meaning as Q1 in formula (IIa); and c1 and c1, which may be the same or different, have the same meaning as a1 and a2 in formula (I). <CHEM> wherein X3 represents -COO-, -OCO-, -CH2OCO-, -CH2COO-, -O-, or -SO2-; Q3 represents a hydrocarbon group having from 1 to 22 carbon atoms; and d1 and d2, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group having from 1 to 8 carbon atoms, -COO-Z3, or -COO-Z3 bonded through a hydrocarbon group having from 1 to 8 carbon atoms, wherein Z3 represents a hydrocarbon group having from 1 to 18 carbon atoms. The electrophotographic light-sensitive material has excellent electrostatic characteristics and mechanical strength.