Method of providing lithographic printing plates
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United States of America Patent
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Aug 13, 2013
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Dec 9, 2010
app pub date -
Jun 9, 2009
filing date -
Jun 9, 2009
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Abstract
Lithographic printing plates can be obtained by contacting infrared radiation-imaged negative-working lithographic printing plate precursors with a processing solution having a pH less than 9 and comprising a UV photoinitiator. After this processing, the lithographic printing plate is floodwise exposed with UV radiation. Providing a UV-photoinitiator in the processing solution followed by UV exposure can increase imaging sensitivity and printing plate run-length, and reduce print background.
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