Emulsion for post-treating planographic printing plates prepared

Details Emulsion for post-treating planographic printing plates prepared Emulsion for post-treating planographic printing plates prepared

1987-05-21

1988-05-31

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce printing surface

430331, 430 97, 106 2, 252308, 252309, G03G 1328, B01J 1300

Patent

active

047480980

ABSTRACT:
An emulsion for post-treating planographic printing plates prepared by electrographic means can be used to improve the print quality of treated plates. The emulsion comprises (i) about 25% to 60% by weight of an aqueous phase comprising a phosphonic acid compound and a water-soluble hydrophilizing polymer and (ii) about 40% to 75% by weight of an organic solvent phase comprising a hydrocarbon mixture containing at least 20% by weight of aromatic components. A process for the production of planographic printing plates that employs this emulsion is simplified and less costly than conventional processes, and entails fewer environmental hazards.

REFERENCES:
patent: 3158476 (1964-11-01), Uhlig
patent: 3276868 (1966-10-01), Uhlig
patent: 4063948 (1977-12-01), Lind
patent: 4153461 (1979-08-01), Berghauser
patent: 4265999 (1987-05-01), Schell
patent: 4388391 (1983-06-01), Schell
patent: 4530897 (1985-07-01), Berghaeuser et al.

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