Photosensitive material for the production of lithographic printing plates utilizing peel development
AssigneeAgfa-Gevaert
InventorWilli-Kurt Gries
Life of this patent
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Abstract
A photosensitive material useful for the production of lithographic printing plates, which contains (a) a support suitable for lithographic printing plates, (b) a hydrophilic layer which contains a crosslinkable organic polymer or is a layer formed by crosslinking such a polymer, (c) a photopolymerizable layer and (d) a transparent cover film, the adhesion of the photopolymerizable layer (c) to the hydrophilic layer (b) and/or to the cover film (d) being changed by exposure. The material permits the production of lithographic printing plates having high printing performance without the use of liquid processing agents.
Claims20
A photosensitive material useful for the production of lithographic printing plates which comprises in the following order:
- (a) a support suitable for lithographic printing plates,
- (b) a hydrophilic layer which comprises a crosslinkable organic polymer which is crosslinked during processing of the material or is a layer formed by crosslinking an organic polymer, wherein the hydrophilic layer (b) has a layer weight from 0.001 to 1 g/m.sup.2,
- (c) a photopolymerizable layer, and
- (d) a transparent cover film,
- wherein the adhesion of the photopolymerizable layer (c) to the hydrophilic layer (b) and/or to the cover film (d) is changed by exposure.
Dependencies are inferred from the claim text.