THERMAL TRANSFER RECORDING MEDIUM

摘要

Provided is a thermal transfer recording medium which has high transfer sensitivity in high-speed printing, that is, which can be reduced in the amount of the dye to be used in the dye layer, and which, even after stored under high-temperature high-humidity conditions, can be prevented from causing an abnormal transfer in printing. The thermal transfer recording medium (1) comprises a base (10), a heat-resistant slip layer (40) disposed on one surface thereof, and an undercoat layer (20) and a dye layer (30) which have been formed in this order on the other surface of the base (10), wherein the undercoat layer (20) comprises, as major components, polyvinylpyrrolidone and polyvinyl alcohol having a degree of crystallinity of 15% or higher, and the dye layer (30) contains a thermally migratable anthraquinone dye.