Liquid developer for electrophotography

Details Liquid developer for electrophotography Liquid developer for electrophotography

1986-04-24

1987-09-01

Goodrow, John L.

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

046908811

ABSTRACT:
The present invention relates to a liquid developer for electrophotography having a solid content of not less than 10% by weight and the diffusion speed (as defined in the specification) of not lower than 1 mm/min., which comprises a toner containing a coloring agent covered with a resin and an aliphatic hydrocarbon dispersing medium dispersing said toner therein, wherein said coloring agent comprises a resinous composition containing an ethylene-vinylacetate copolymer as the essential component, which disperses therein a pigment coated with at least one of humic acid, humate and humic acid derivatives, and said toner comprises said coloring agent covered with a resinous composition containing a polymer prepared from a composition containing Monomer I of the following general formula, ##STR1## (wherein R represents hydrogen or methyl group and A represents --COOC.sub.n H.sub.2n+1 or --OCOC.sub.n H.sub.2n+1, n being an integer of 6 to 20) and Monomer II having an allyl group as the essential components.

REFERENCES:
patent: 4595646 (1986-06-01), Tsubuko et al.

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