Aluminum substrates and lithographic printing plate precursors
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United States of America Patent
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Sep 1, 2015
Grant Date -
Feb 20, 2014
app pub date -
Oct 25, 2013
filing date -
Apr 19, 2011
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Abstract
Electrochemically grained and anodized aluminum supports are treated with a post-treatment coating solution containing a polymer derived at least in part from vinyl phosphonic acid and phosphoric acid. This post-treated support is useful as substrates in the preparation of lithographic printing plate precursors. The post-treatment substrate treatment enables wide latitude in manufacturing and compatibility with silicate-free developers to achieve negligible background staining and oxide attack.
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