Material for gravure recording by means of coherent electromagnetic radiation and printing plate therewith
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United States of America Patent
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Apr 10, 2001
Grant Date -
N/A
app pub date -
Aug 24, 1999
filing date -
Aug 24, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A material for gravure recording by means of coherent electromagnetic radiation for letterpress printing, consisting of a substrate and a crosslinkable layer, with or without a release layer and/or cover sheet, the layer containing at least one ethylenically unsaturated compound, a polymerization initiator and at least one polymeric binder which consists of polyvinyl alcohol and/or at least one copolymer having a substantial proportion of the structural unit ##STR1## and containing a filler having a ceiling temperature of less than 800K, in particular less than 600K, e.g. polystyrene, polymethyl methacrylate, poly(ethylene)ketone, polyoxymethylene or poly(.alpha.-methylstyrene), in particular having a spherical or roughly spherical form with a maximum dimension of about 5-10 .mu.m. The material is very suitable for laser-engravable letterpress printing plates.
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