Processing of lithographic printing plate precursors

Details Processing of lithographic printing plate precursors Processing of lithographic printing plate precursors

1998-10-30

2000-07-25

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Including post developing step

134 15, 134 34, G03C 526

Patent

active

060935227

ABSTRACT:
A wash liquor for use in the decoating of a silver halide diffusion transfer printing plate comprises an aqueous solution containing at least one organic or inorganic acid salt, such as the silicate, metasilicate, tartrate, citrate, hydroxycarboxylate, borate, hexametaphosphate, tripolyphosphate or pyrophosphate of sodium or potassium. The liquor preferably also contains at least one of a non-ionic surfactant, an enzyme and a biocide. A process for the decoating of the said printing plate is also disclosed.

REFERENCES:
patent: 5196290 (1993-03-01), Coppens et al.
patent: 5518866 (1996-05-01), Coppens et al.
patent: 5763149 (1998-06-01), Deprez

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