Potassium silicate developing composition and method of use to p

Details Potassium silicate developing composition and method of use to p Potassium silicate developing composition and method of use to p

1996-10-11

1999-04-27

Young, Christopher G.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430326, 430331, G03F 732

Patent

active

058979859

ABSTRACT:
An alkaline developing composition for processing a lithographic printing plate includes an alkali metal silicate present in an amount to provide at least about 42 g SiO.sub.2 per 1000 g of composition, and a weight ratio of SiO.sub.2 to M.sub.2 O of from about 0.55 to about 0.925 wherein M is said the metal. The lithographic printing plate can be either positive- or negative-working, and includes negative-working thermal plates.

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