Process for treating lithographic printing forms and lithographi

Details Process for treating lithographic printing forms and lithographi Process for treating lithographic printing forms and lithographi

1992-09-28

1994-05-24

Kight, III, John

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430 18, 430278, 430309, 1014631, 101454, 101456, 101467, B41N 108

Patent

active

053147871

ABSTRACT:
Grained, anodized and hydrophilized lithographic printing plates which have a negative or positive working radiation-sensitive coating, are exposed and are developed in an aqueous alkaline solution, are subjected, after hydrophilization, to a treatment with a salt solution containing divalent or polyvalent cations in a concentration of not less than 0.02 mol/l, thereby minimizing degradation of the plate and contamination of the printing forms and the development apparatus.

REFERENCES:
patent: 4427765 (1984-01-01), Mohr et al.
patent: 4983497 (1991-01-01), Gilson et al.

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