Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1991-01-29
1992-05-19
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, G03G 912
Patent
active
051148226
ABSTRACT:
A liquid developer for electrostatic photography is disclosed. The liquid developer comprises at least resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are copolymer resin grains obtained by polymerizing a solution containing (1) at least a mono-functional monomer (A) which is soluble in the above-described non-aqueous solvent but becomes insoluble therein by being polymerized, and, optionally, a monomer (B-1) represented by the formula (III) or a monomer (B-2) represented by the formula (IV), in the presence of a dispersion-stabilizing resin soluble in the non-aqueous solvent, which is an AB type block copolymer. The liquid developer of the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability, and provide a master plate for offset printing having high printing durability.
REFERENCES:
patent: 4522908 (1985-06-01), de Winter et al.
patent: 4665002 (1987-05-01), Dan et al.
patent: 4837102 (1989-06-01), Dan et al.
Patent Abstracts of Japan, vol. 14, No. 162 (Mar. 29, 1990).
Patent Abstracts of Japan, vol. 14, No. 158 (Mar. 27, 1990).
Hattori Hideyuki
Kato Eiichi
Ashton Rosemary
Fuji Photo Film Co. , Ltd.
McCamish Marion E.
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