Aqueous developer for lithographic printing plates which provide

Details Aqueous developer for lithographic printing plates which provide Aqueous developer for lithographic printing plates which provide

1992-12-17

1995-01-10

Dote, Janis L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Finishing or perfecting composition or product

430302, 430309, 430325, G03F 732

Patent

active

053806239

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, an alkali metal tetraborate, an aliphatic monocarboxylic acid, an aliphatic dicarboxylic acid, a long chain aliphatic amine and sufficient alkaline buffering system to provide an alkaline pH. The developing composition is resistant to oxidation, highly effective in dissolution-type processing, able to effectively desensitize the background areas of the printing plate, and effective in enhancing the oleophilicity of the image areas of the printing plate.

REFERENCES:
patent: 3701657 (1972-10-01), Moore et al.
patent: 3707373 (1972-12-01), Martinson et al.
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: 5106724 (1992-04-01), Nogami et al.

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