Patent EP-0416591-A2 (EP)
Inventor: KATO EIICHI FUJI PHOTO FILM CO
IPC: C08F20/10
Filed: 1990-09-05
Abstract: An electrophotographic light-sensitive material comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive substance and a binder resin, wherein the binder resin comprises (A) at least one resin having a weight average molecular weight of from 1 x 10 3  to 2x 104 and containing not less than 30% by weight of a copolymerizable component corresponding to a repeating unit represented by the general formula (I) described below and having at least one acidic group selected from the group consisting of -P0 3 H 2 , -SO 3 H, -COOH, -OH,
     (wherein R represents a hydrocarbon group or -OR (wherein R represents a hydrocarbon group)) and a cyclic acid anhydride-containing group at one of the terminals of the main chain thereof;   wherein a 1  and a 2  each represents a hydrogen atom, a halogen atom, a cyano group or a hydrocarbon group; and R 1  represents a hydrocarbon group; and (B) at least one copolymer having a weight average molecular weight of from 5×10 4  to 1 x10 6  and comprising at least a monofunctional macromonomer (M) having a weight average molecular weight of not more than 2×10 4  and a monomer represented by the general formula (V) described below, the macromonomer (M) comprising at least one polymerizable component corresponding to a repeating unit represented by the general formulae (IVa) and (IVb) described below, and at least one polymerizable component containing at least one acidic group selected from -COOH, -P0 3 H 2 , -SO 3 H, -OH,   (wherein Ro represents a hydrocarbon group or -ORo (wherein Ro represents a hydrocarbon group)), -CHO, and an acid anhydride-containing group, and the macromonomer (M) having a polymerizable double bond group represented by the general formula (III) described below bonded to only one terminal of the main chain of the polymer;   wherein Xo represents -COO-, -OCO-, -CH 2 0CO-, -CH 2 COO-, -0-, S0 2 -, CO-, -CONHCOO-, CONHCONH-,   (wherein R 31  represents a hydrogen atom or a hydrocarbon group), and c 1  and c 2 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group, -COO-Z 1  or -COO-Z 1  bonded via a hydrocarbon group (wherein Z 1  represents a hydrogen atom or a hydrocarbon group which may be substituted);   wherein X 1  has the same meaning as Xo in the general formula (III); Q 1  represents an aliphatic group having from 1 to 18 carbon atoms or an aromatic group having from 6 to 12 carbon atoms; d 1  and d 2 , which may be the same or different, have the same meaning as c 1  and c 2  in the general formula (III); and Qo represents -CN, -CONH 2 , or   (wherein Y represents a hydrogen atom, a halogen atom, an alkoxy group or -COOZ 2  (wherein Z 2  represents an alkyl group, an aralkyl group, or an aryl'group));   wherein X 2  has the same meaning as X 1  in the general formula (IVa); Q 2  has the same meaning as Q 1  in the general formula (lVa); and e 1  and e 2 , which may be the same of different, have the same meaning as c 1  and c 2  in the general formula (III).   
     The electrophotographic light-sensitive material exhibits excellent electrostatic characteristics and mechanical strength even under severe conditions. Also it is advantageously employed in the scanning exposure system using a semiconductor laser beam.