Lithographic plate with disperse particulate rubber additive
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United States of America Patent
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Dec 29, 1998
Issued Date -
N/A
app pub date -
Oct 17, 1996
filing date -
Nov 1, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention discloses the use of rubber and surfactant to enhance the durability and resolution of on-press developable lithographic printing plates. The rubber is preferably incorporated into a photoresist as discrete particulate rubber. To ensure a uniform and stable dispersion, the rubber is suspended in the photoresist by means of a surfactant having an HLB approximately between 7.0 and 18.0.
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