On-press development of a lithographic plate comprising dispersed solid particles
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United States of America Patent
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Jun 6, 2000
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N/A
app pub date -
Jun 5, 1999
filing date -
Jun 5, 1999
priority date (Note) -
Expired
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Abstract
This invention discloses a negative-working on-press developable lithographic printing plate utilizing a non-hydrophilic solid particulate dispersion in the photosensitive layer to enhance on-press developability and non-tackiness of lithographic printing plate. The photosensitive layer is capable of being softened and dispersed by ink, and the plate can be developed on a printing press equipped with ink and fountain solution during regular press operation. Incorporation of non-hydrophilic particles can improve on-press developability or reduce tackiness without sacrificing other properties.
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