Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-06-11
1992-05-12
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430115, 430904, G03G 913
Patent
active
051127180
ABSTRACT:
A liquid developer for electrostatic photography is disclosed. The liquid developer comprises resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA. cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are polymer resin grains obtained by polymerizing a solution containing at least one kind of a mono-functional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble in the non-aqueous solvent by being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the non-aqueous solvent and is a comb-like copolymer comprising (1) at least a mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and (2) at least a monomer represented by formula (III) as defined in the specification.
The liquid developer according to the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability.
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Hattori Hideyuki
Kato Eiichi
Fuji Photo Film Co. , Ltd.
McCamish Marion E.
Rodee Christopher D.
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