A thermal transfer sheet for the laser-induced coating of a...

B - Operations – Transporting – 41 – C

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B41C 1/10 (2006.01) B41C 1/05 (2006.01) B41F 13/193 (2006.01)

Patent

CA 2315536

A thermal transfer sheet suitable for preparing a lighographic printing form cylinder is provided including a substrate layer and a donor layer. The substrate layer includes a first polymer having mechanical stability at temperatures greater than 150 degrees C and light transmission of at least 70% for wavelengths of from about 700 nm to about 1600 nm. The donor layer includes a second polymer having acidic groups and/or optionally substituted amide groups and an additive is capable of converting incident laser light energy into heat energy. A wetting aid and/or a solvent are also included in the donor layer. A method of making the thermal transfer sheet is also provided.

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