System for direct-to-press imaging
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United States of America Patent
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-
Dec 21, 2004
Grant Date -
Jun 3, 2004
app pub date -
Jun 30, 2003
filing date -
Jul 23, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A direct-to-press imaging method comprises: (a) applying an imageable coating to a printing cylinder, wherein the imageable coating comprises a composition such as a thermally switchable polymer which changes affinity for a printing fluid upon exposure to imaging radiation such as infrared radiation delivered imagewise via a laser, and the imageable coating is substantially insoluble in the printing fluid; (b) imagewise exposing the imageable coating to actinic radiation to obtain an imaged coating; (c) printing a plurality of copies of an image from the imaged coating; and (d) reapplying the imageable coating as desired by repeating steps (a) through (c) at least once without substantially removing the prior imaged coating before reapplying the imageable coating.
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