Lithographic printing plate having addition polymerized areas an

Details Lithographic printing plate having addition polymerized areas an Lithographic printing plate having addition polymerized areas an

1977-06-22

1979-04-03

Brammer, Jack P.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 33, 96 351, 96 86P, 96 87R, 96115P, 101456, 101457, 101462, G03C 194, G03C 500

Patent

active

041475496

ABSTRACT:
A lithographic printing plate is prepared from a layer of a photopolymerizable composition comprising an oleophilic macromolecular organic binder and a leachable hydrophilic ethylenically unsaturated compound by e posing the layer and then leaching the compound from the unexposed areas by treating with a suitable developing solvent, preferably water, producing an oleophilic surface. A similar plate may be prepared from a composition containing a hydrophilic binder and oleophilic leachable compound by imagewise exposure and solvent leaching producing an oleophilic surface in exposed areas and a hydrophilic surface in unexposed areas.

REFERENCES:
patent: 3475171 (1969-10-01), Alles
patent: 3751259 (1973-08-01), Bauer et al.
patent: 3784378 (1974-01-01), Gramas

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