Method for rendering silver areas of a silver based printing pla

Details Method for rendering silver areas of a silver based printing pla Method for rendering silver areas of a silver based printing pla

1994-05-05

1995-07-25

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Bleach or intensification

430204, 430309, 430331, 430432, 430248, 430463, 430493, 101465, 101466, G03C 540, G03C 544, G03C 806, G03F 707

Patent

active

054361192

ABSTRACT:
The present invention provides a conversion liquid for converting silver areas of a silver based printing plate into ink repellant areas while rendering background areas of said silver based printing plate ink accepting, said conversion liquid comprising a hydrophobizing compound capable of adsorbing to said hydrophilic background areas and a hydrophilizing compound capable of adsorbing to said silver areas and/or a bleaching compound capable of oxidizing the silver in said silver based printing plate.

REFERENCES:
patent: 2297929 (1942-10-01), Wise
patent: 3260198 (1966-07-01), Wagemans et al.
patent: 3592647 (1971-07-01), Blake et al.
patent: 4837122 (1989-06-01), Kondo et al.
patent: 5068164 (1991-11-01), Kondo et al.
patent: 5308746 (1994-05-01), Barnett et al.

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