Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1989-09-29
1990-09-04
Welsh, J. David
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 49, 430 58, 430910, G03G 5087
Patent
active
049544071
ABSTRACT:
An electrophotographic photoreceptor comprising a support having thereon at least one photoconductive layer containing at least inorganic photoconductive particles and a binder resin, wherein said binder resin has a weight average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.4 and comprises (A) at least one resin comprising, as a polymerization component, (a-i) not less than 30% by weight of at least one repeating unit represented by formula (I) or (II): ##STR1## wherein X.sub.1 and X.sub.2, which may be the same or different, 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 bond or a linking group containing from 1 to 4 linking atoms which connects --COO-- and the benzene ring, with at least one acidic group selected from the group consisting of (i) --PO.sub.3 H.sub.2, (ii) --SO.sub.3 H, (iii) --COOH, ##STR2## wherein R represents a hydrocarbon group having from 1 to 10 carbon atoms or --OR', wherein R' represents a hydrocarbon group having from 1 to 10 carbon atoms, and (v) a cyclic acid anhydride-containing group, being bonded to only one of the terminals of the polymer main chain thereof. The photoreceptor exhibits excellent electrostatic characateristics, image formation performance as well as printing suitability irrespective of variations in environmental conditions or the kind of sensitizing dyes used in combination with the photoreceptor.
REFERENCES:
patent: 4551403 (1985-11-01), Miyakawa
Ishii Kazuo
Kato Eiichi
Fuji Photo Film Co. , Ltd.
Welsh J. David
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