Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1979-08-28
1981-04-28
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
260 285R, 260 285A, 430113, 430114, 430137, G03G 900, C08L 9100
Patent
active
042646995
ABSTRACT:
A liquid developer for use in electrophotography which is prepared by dispersing a pigment or dye and a resin in a carrier liquid comprising a nonaqueous solvent having a high insulating property and a low dielectric constant, wherein said resin comprises those obtained by grafting, upon a copolymer comprising a monomer having the general formula ##STR1## [wherein R is --H or --CH.sub.3 and X is a phenyl group, a methylphenyl group, --COOC.sub.n H.sub.2n+1 (1.ltoreq.n.ltoreq.20) or --COOC.sub.2 H.sub.4 N(C.sub.m H.sub.2m+1).sub.2 (1.ltoreq.m.ltoreq.5)], a monomer having a glycidyl group and a unsaturated carboxylic acid or its anhydride, in particular the unsaturated carboxylic acid or its anhydride when the copolymer has the glycidyl group as the constitution unit, and the monomer having a glycidyl group when the copolymer has the unsaturated carboxylic acid or its anhydride as the constitution unit.
REFERENCES:
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patent: 4060493 (1977-11-01), Tsubuko et al.
patent: 4081391 (1978-03-01), Tsubuko et al.
patent: 4104183 (1978-08-01), Tsubuko et al.
patent: 4181620 (1980-01-01), Tsubuko
Kimura Taro
Kurotori Tsuneo
Tsubuko Kazuo
Downey Mary F.
Ricoh Co. Ltd.
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