Process for the production of a lithographic printing plate thro

Details Process for the production of a lithographic printing plate thro Process for the production of a lithographic printing plate thro

1995-09-22

1998-01-06

Young, Christopher G.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Image layer portion transfer and element therefor

430302, G03F 734

Patent

active

057053138

ABSTRACT:
A process for the production of a lithographic printing plate is described, in which a photosensitive material comprising a substrate suitable for lithographic printing, a hydrophilic intermediate layer, a photopolymerizable layer which changes its adhesion to the hydrophilic layer and/or to the cover sheet on exposure to light and a transparent cover sheet provided with an exposure mask which is non-transparent to actinic light is exposed to actinic light through the exposure mask, and the photopolymerizable layer is developed to give the image by peeling off the cover sheet from the substrate.
The process is carried out in all stages without the use of chemicals and gives printing plates having good oleophilic properties and a long press life.

REFERENCES:
patent: 3469983 (1969-09-01), Diener et al.
patent: 4175964 (1979-11-01), Uchida et al.

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