Method for making a lithographic printing plate
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United States of America Patent
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-
Sep 2, 1980
Grant Date -
N/A
app pub date -
Sep 20, 1978
filing date -
Dec 15, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lithographic printing plate which utilizes a photographic process and which is excellent in ink-repellency of non-image areas, have no stains with oily materials or fingerprints of workers, shows no reduction of ink-repellency of non-image areas and ink-receptivity of image areas with the lapse of time and can provide prints with no stains and clear images is produced by a neutralizing solution used in photographic treatment containing colloidal fine particles, preferably in combination with a hygroscopic polyol compound.
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