Overcoat for thermal dye transfer receiving element

摘要

A dye-receiving element for thermal dye transfer comprising a support having on one side thereof, in order, a dye image-receiving layer and an overcoat layer thereon, the overcoat layer comprising: a) a linear condensation copolymer containing block polysiloxane units copolymerized into a linear polymer chain, the linear copolymer comprising from about 1 to about 40 wt. % of polysiloxane units; and b) a polycarbonate having a Tg of from about 10 DEG C. to about 120 DEG C. and a molecular weight of from about 1,000 to about 6,000, said polycarbonate having the following formula: wherein R3 represents hydrogen, methyl or ethyl; R4 repesents hydrogen, alkyl of 1 to 6 carbon atoms or halogen; a represents an integer from 2 to 10; d is an integer from 1 to 6; and W represents