Thermal transfer donor element comprising a substrate having a microstructured surface
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United States of America Patent
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Jul 5, 1994
Grant Date -
N/A
app pub date -
Oct 28, 1993
filing date -
Oct 28, 1993
priority date (Note) -
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Abstract
Laser-addressable thermal transfer donor elements for producing color proofs, printing plates, films, printed circuit boards, and other media are disclosed. The thermal transfer donor elements include a substrate having a microstructured surface. The microstructured surface contain a plurality of randomly positioned discrete protuberances of varying heights and shapes. The donor elements further include a black metal layer on the microstructured surface and a gas-producing polymer layer over the black metal layer. The gas-producing polymer in the gas-producing polymer layer has a thermally available nitrogen content of greater than about 10 weight percent. A thermal mass transfer material (e.g., a colorant such as a dye or pigment) is included in or over the gas-producing polymer layer.
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