Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-04-11
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 900, G03G 912
Patent
active
051127164
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 .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 (1) at least a mono-functional monomer (A) which is soluble in the aforesaid non-aqueous solvent but becomes insoluble therein by being polymerized in the presence of a dispersion-stabilizing resin (BA) soluble in the non-aqueous solvent, which is a polymer containing a recurring unit represented by the formula (I) described in the specification, at least a part of the main chain of the polymer being crosslinked, and, optionally, (2) a monomer (B-1) represented by the formula (II-1) described in the specification. The liquid developer of this invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability.
REFERENCES:
patent: 4618557 (1986-10-01), Dan et al.
patent: 4665002 (1987-05-01), Dan et al.
patent: 4837102 (1989-06-01), Dan et al.
patent: 4840865 (1989-06-01), Kato et al.
patent: 4842975 (1989-06-01), Kato et al.
patent: 5006441 (1991-04-01), Kato
Patent Abstracts of Japan, vol. 10, No. 38 (Feb. 14, 1986).
Hattori Hideyuki
Kato Eiichi
Crassan Stephen
Fuji Photo Film Co. , Ltd.
McCamish Marion E.
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