THERMAL TRANSFER DONOR COMPONENT MADE OF SUBSTRATE HAVING MICROSTRUCTURAL SURFACE

摘要

PURPOSE: To provide laser-addressable thermal transfer donor element for producing color proofs, printing plates, films, printed circuit boards and other media. CONSTITUTION: Thermal transfer donor elements include a substrate having a microstructured surface. The microstructured surface contains 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. A gas- producing polymer in the gas-producing polymer layer has a thermally available nitrogen content of more than about 10 wt.%. A thermal mass transfer material (for instance, a colorant such as a dye or a pigment) is included in or over the gas-producing polymer layer.