Novel photoconductive waterless lithographic printing masters, a

Details Novel photoconductive waterless lithographic printing masters, a Novel photoconductive waterless lithographic printing masters, a

1975-04-28

1977-03-15

Welsh, John D.

Gas separation: apparatus

Magnetic separating means

96 33, 427409, 101463, G03G 504

Patent

active

040122549

ABSTRACT:
Photoconductive waterless lithographic printing masters are provided having particle-to-particle contact of photoconductive material by placing a heterogeneous copolymer having an abhesive species and an imaging material adhesive species, in a solvent in which at least one of said species can be preferentially dissolved, preferentially dissolving one of said species and forming a suspension of photoconductive material in said soluble species, and coating the suspension on a suitable master substrate, allowing the solvent to evaporate, imaging the material with an ink accepting particulate imaging material in image configuration, and fusing the particulate imaging material to the coated master substrate while preferably effecting a phase inversion between the two species of the heterogeneous copolymer.

REFERENCES:
patent: 3547627 (1970-12-01), Amidon et al.
patent: 3578444 (1971-05-01), Silver
patent: 3671232 (1972-06-01), Kumins
patent: 3907562 (1975-09-01), Crystal

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