Electrophotographic light-sensitive material

Details Electrophotographic light-sensitive material Electrophotographic light-sensitive material

1991-01-09

1992-04-14

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 57, 430 58, 523204, G03G 508

Patent

active

051047594

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.times.10.sup.3 to 2.times.10.sup.4 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 from 0.5 to 20% by weight of a copolymerizable component having at least one acidic group selected from the group consisting of --PO.sub.3 H.sub.2, --SO.sub.3 H, --COOH, --OH, ##STR1## (wherein R represents a hydrocarbon group or --OR' (wherein R' represents a hydrocarbon group)) and a cyclic acid anhydride-containing group; ##STR2## wherein a.sub.1 and a.sub.2 each represents a hydrogen atom, a halogen atom, a cyano group or a hydrocarbon group; and R.sub.1 represents a hydrocarbon group; and (B) at least one graft type copolymer 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 mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and comprising an AB block copolymer being composed of an A block comprising at least one polymerizable 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 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 one polymerizable component represented by the general formula (II) described below and having a polymerizable double bond group bonded to the terminal of the main chain of the B block polymer. ##STR4## wherein b.sub.1 and b.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 hydrogen atom or 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 represent 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: 4952475 (1990-08-01), Kato et al.
patent: 5001029 (1991-03-01), Kato et al.
patent: 5030534 (1991-07-01), Kato et al.
patent: 5077166 (1991-12-01), Kato et al.

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