Printing plate protectant

Details Printing plate protectant Printing plate protectant

1990-10-05

1991-06-04

Van Le, Hoa

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Finishing or perfecting composition or product

430309, 430330, 430432, 562 21, G03C 500

Patent

active

050213245

ABSTRACT:
A composition useful for the protection of actinic light-exposed presensitized lithographic printing plates. The composition contains an effective amount of the di-potassium salt of hydroxyethylidene diphosphonic acid dissolved in water. The composition is applied to the surface of the revealed substrate of the plates after they have been developed but before treatment to heat, to prevent surface contamination from the heat treatment.

REFERENCES:
patent: 3202579 (1965-08-01), Berth et al.
patent: 3214454 (1965-10-01), Blaser et al.
patent: 3914162 (1975-10-01), Kowalski
patent: 4322492 (1982-03-01), Kunitz et al.
patent: 4330616 (1982-05-01), Kurematsu et al.
patent: 4786581 (1988-11-01), Stahlhofen et al.
patent: 4968584 (1990-11-01), Nagashima et al.

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