Thermal transfer printing.

摘要

A thermal transfer printing sheet comprising a substrate having a coating of a disazo dye of Formula (1): wherein: R is selected from -H; -CN; -NO2; -COT<1>; -SO2T<1>; -COOT<1>; -SO2F; and -SO2Cl; each R<1> is independently selected from -H; -F, -Cl, -Br; and -CF3; n is 1, 2 or 3; R<2> is -H or C1-4-alkyl; R<3> is -CN; R<4> is a straight or branched chain C1-6-alkyl; R<5> is and R<6> is selected from -H; C1-4-alkyl; and -NHCOT<1>; wherein T<1> is C1-4-alkyl or phenyl.