Surfactant in precoat for lithographic plates
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United States of America Patent
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May 4, 1999
Grant Date -
N/A
app pub date -
Oct 6, 1997
filing date -
Oct 6, 1997
priority date (Note) -
Expired
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Abstract
Improved aluminum substrates suitable for use in the production of lithographic printing plates. A surfactant surface treatment for such aluminum substrates improves the quality of radiation sensitive coatings subsequently applied to the substrate. The surfactant may be in a layer comprising a mixture of a hydrophilizing composition and a surfactant on the aluminum alloy surface; or a hydrophilizing layer comprising a hydrophilizing composition may be on the aluminum alloy surface and a surfactant layer comprising a surfactant on the hydrophilizing layer.
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