Electrophotographic photoreceptor

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product

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526326, G03G 500, C08F 1816

Patent

active

051340518

ABSTRACT:
An electrophotographic photoreceptor comprising a support having provided thereon at least one photoconductive layer containing at least inorganic photoconductive particles and a binder resin is disclosed, wherein said 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 comprising not less than 30% by weight of at least one repeating unit (a-i) represented by formula (I) or (II): ##STR1## wherein X.sub.1 and X.sub.2 each represents a hydrogen atom, a hydrocarbon group having from 1 to 10 carbon atoms, a chlorine atom, a bromine atom, --COY.sub.1 or --COOY.sub.2, wherein Y.sub.1 and Y.sub.2 each represents a hydrocarbon group having from 1 to 10 carbon atoms, provided that both X.sub.1 and X.sub.2 do not simultaneously represent a hydrogen atom; and W.sub.1 and W.sub.2 each represents a mere bond or a linking group containing from 1 to 4 linking atoms which connects --COO-- and the benzene ring, and from 0.5 to 15% by weight of at least one repeating unit (a-ii) containing at least one acidic group selected from --PO.sub.3 H.sub.2, --SO.sub.3 H, --COOH, ##STR2## wherein R represents a hydrocarbon group or --OR' (R' represents a hydrocarbon group having from 1 to 22 carbon atoms), and a cyclic acid anhydride-containing group.

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