Invention Grant
US06905812B2 Lithographic printing form and method of preparation and use thereof 失效
平版印刷形式及其制备方法及用途

Lithographic printing form and method of preparation and use thereof
Abstract:
A positive working printing form precursor comprises a thermally imagable composition which includes a hydroxyl group-containing polymer, for example a novolak resin. The composition has a weight of less than 1.1 gm−2. It has been found that using a low weight of the composition on the precursor improves the properties of the precursor, in particular by rendering the sensitivity of the precursor to imaging radiation less variable over time.
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