Aqueous developer for lithographic printing plates with improved

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Finishing or perfecting composition or product

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430302, 430309, 430325, G03F 732

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active

052799271

ABSTRACT:
Aqueous alkaline developing compositions useful in the development of negative-working lithographic printing plates are comprised of an organic solvent, an anionic surface active agent, sodium oxalate, sodium nitrate or an alkali metal tetraborate, an aliphatic monocarboxylic acid, an aliphatic dicarboxylic acid and sufficient alkaline buffering system to provide an alkaline pH. The developing composition is resistant to oxidation, highly effective in dissolution-type processing, and able to effectively desensitize the background areas of the printing plate.

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patent: 4186006 (1980-01-01), Kobayashi et al.
patent: 4308340 (1981-12-01), Walls
patent: 4350756 (1982-09-01), Burch et al.
patent: 4395480 (1983-07-01), Sprintschnik
patent: 4716098 (1987-12-01), Mack et al.
patent: 4851324 (1989-07-01), Hsieh
patent: 5035982 (1991-07-01), Walls
patent: 5155012 (1992-10-01), Joerg et al.

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