Production of gravure printing plates having plastic printing la

Details Production of gravure printing plates having plastic printing la Production of gravure printing plates having plastic printing la

1983-08-22

1986-01-21

Kittle, John E

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430326, 430330, 430327, 430328, 430935, 430927, 430270, 430280, 430325, 430331, 430394, G03C 516, G03C 1495, G03C 172

Patent

active

045657718

ABSTRACT:
Gravure printing plates comprising a plastic printing layer applied on a printing plate base are produced by a method wherein a solid photosensitive layer (L) firmly bonded on the printing plate base is exposed imagewise to actinic light, and the exposed layer is washed out with a developer and then subjected to thermal hardening to form the plastic printing layer. In this process, the photosensitive layer (L) employed contains, as the photosensitive component, a compound possessing two or more aromatic and/or heteroaromatic o-nitrocarbinol ester groups, and a compound which effects crosslinking and possesses two or more reactive groups which are capable of reacting with --COOH groups under the action of heat to form a covalent chemical bond. After imagewise exposure, the layer is either washed out with an aqueous developer, post-exposed uniformly to actinic light and then subjected to thermal hardening and crosslinking, or subjected to selective thermal hardening and crosslinking in the exposed areas and then washed out with a developer.

REFERENCES:
patent: 3770435 (1973-11-01), Volkert et al.
patent: 3926636 (1975-12-01), Barzynski et al.
patent: 4035189 (1977-07-01), Hayashi et al.
patent: 4187107 (1980-02-01), Homma et al.
patent: 4456679 (1984-06-01), Leyrer et al.
patent: 4465760 (1984-08-01), Leyrer et al.

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