Electrophotographic light-sensitive material

Details Electrophotographic light-sensitive material Electrophotographic light-sensitive material

1991-05-20

1993-04-27

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 49, 430 87, G03G 508

Patent

active

052061051

ABSTRACT:
An electrophotographic light-sensitive material comprising a support having provided thereon a photoconductive layer containing at least an inorganic photoconductive substance and a binder resin, wherein the binder resin comprises (A) at least one AB block copolymer (Resin (A)) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and composed of an A block comprising at least one polymer component containing at least one acidic group selected from --PO.sub.3 H.sub.2, --COOH, --SO.sub.3 H, a phenolic hydroxy group, ##STR1## (wherein R represents a hydrocarbon group or --OR' (wherein R' represents a hydrocarbon group)) and a cyclic acid anhydride-containing group, and a B block containing at least a polymer component represented by the following general formula (I): ##STR2## wherein R.sub.1 represents a hydrocarbon group; and (B) at least one graft type copolymer (Resin (B)) having a weight average molecular weight of from 3.times.10.sup.4 to 1.times.10.sup.6 and containing, as a copolymerizable component, at least one monofunctional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and comprising an MAB block copolymer composed of an MA block comprising at least one polymer component containing at least one acidic group selected from --PO.sub.3 H.sub.2, --COOH, --SO.sub.3 H, a phenolic hydroxyl group, ##STR3## (wherein R.sub.0 represents a hydrocarbon group or --OR.sub.0 ' (wherein R.sub.0 ' represents a hydrocarbon group)) and a cyclic acid anhydride-containing group, and an MB block containing at least one polymerizable component represented by the general formula (III) described below and having a polymer double bond group bonded to the terminal of the main chain of the MB block polymer: ##STR4## wherein d.sub.1 and d.sub.2 each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group, --COOR.sub.24 or --COOR.sub.24 bonded via a hydrocarbon group (wherein R.sub.24 represents a hydrocarbon group); X.sub.1 represents --COO--, --OCO--, --CH.sub.2).sub.l1 OCO--, --CH.sub.2).sub.l2 COO--(wherein l.sub.1 and l.sub.2 each represents an integer of from 1 to 3), --O--, --SO.sub.2 --, CO--, ##STR5## (wherein R.sub.23 represents a hydrogen atom or a hydrocarbon group), --CONHCOO--, --CONHCONH--, or ##STR6## and R.sub.21 represents a hydrocarbon group, provided that, when X.sub.1 represents ##STR7## R.sub.21 represents a hydrogen atom or a hydrocarbon group.

REFERENCES:
patent: 5009975 (1991-04-01), Kato et al.
U.S. patent application Ser. No. 07/655,606, Kato filed Feb. 15, 1991.

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