Multi-layer thermal transfer media from selectively curable form

Details Multi-layer thermal transfer media from selectively curable form Multi-layer thermal transfer media from selectively curable form

1998-01-28

2000-03-21

Hess, Bruce H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428195, 428413, 4284231, 428484, 428500, 428913, 428914, 427146, 427152, 427331, 4273722, B23B 702

Patent

active

060400404

ABSTRACT:
A thermal transfer medium with widely variable properties is obtained through the use of a thermosoftenable coating with regions or layers with distinct viscosity values and hot tack properties. The top surface of the coating has a high concentration of polymers obtained from selectively curable monomers and the bottom surface of the coating has a high concentration of uncured monomers which are selectively curable. The top surface of the coating provides high adhesion to a receiving substrate and the bottom surface of the coating provides reduced adhesion to the supporting substrate of the thermal transfer medium. This allows for rapid transfer and high adhesion to a receiving substrate. Selected thermal transfer media will form images on rough stock and/or will form images with high speed printers. Methods for preparing such thermal transfer media comprise forming a coating containing selectively curable monomers and/or oligomers on a flexible supporting substrate and curing a portion of selectively curable monomers at the top surface of the coating to form polymers, preferably by exposure to visible or UV light.

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