Method and apparatus for laser imaging of lithographic printing members by thermal non-ablative transfer
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United States of America Patent
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Oct 13, 1998
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N/A
app pub date -
Jan 23, 1995
filing date -
Jan 23, 1995
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Abstract
Apparatus and methods for rapid, efficient production of durable lithographic printing plates by a thermal-transfer process that does not involve ablation. In response to an imaging pulse, a transfer material reduces in viscosity to a flowable state. The material exhibits a higher melt adhesion for a plate substrate than for the carrier sheet to which it is initially bound, so that in a flowable state it transfers completely to the substrate. Following transfer, the carrier sheet, along with untransferred material, is removed from the substrate.
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