Patent ID: 6040040
Filing Date: 2000-03-21
Classification: B41M,Y10S,Y10T

Abstract:
A thermal transfer medium which transfers images to a receiving substrate when exposed to an operating print head of a thermal transfer printer, said thermal transfer medium comprising:a) a flexible supporting substrate andb) a thermosensitive coating positioned on said substrate comprising a sensible material, uncured monomers and/or oligomers which are selectively curable and polymers of said selectively curable monomers and/or oligomers,wherein the polymers of the selectively curable monomers and/or oligomers are concentrated at the top of said coating to provide a cured region at the top surface of said coating and the uncured monomers and/or oligomers which are selectively curable are concentrated at the bottom surface of said coating which contacts the flexible supporting substrate; to provide a uncured region at the bottom surface of said coating, andwherein the total amount of uncured monomers and/or oligomers which are selectively curable, plus the amount of polymers of the selectively curable monomers and/or oligomers, falls within the range of from 10 to 70 wt. %, based on the dry components of said coating.