Planographic printing plate having cationic compound in interlayer
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United States of America Patent
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Nov 12, 1985
Issued Date -
N/A
app pub date -
Aug 29, 1984
filing date -
Jul 18, 1983
priority date (Note) -
Expired
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Abstract
An improved planographic printing plate comprised of a metal substrate, a sealing layer, an interlayer formed from a monomer or polymer of an organic compound having at least one cationic, quaternary substituted ammonium group, and a photosensitive layer on the surface of the interlayer. The printing plates are water developable and characterized by cleaner non-imaging areas during printing operations. The method of preparing such planographic printing plates is also described and illustrated.
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