THERMAL TRANSFER INK SHEET, INK CARTRIDGE, COATING COMPOSITION FOR DYE LAYER OF THERMAL TRANSFER INK SHEET AND THERMAL TRANSFER RECORDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a thermal transfer ink sheet with high sensitivity but no image defect.

SOLUTION: In the thermal transfer ink sheet provided with a dye layer comprising a thermal transfer dye in a resin binder on a substrate, a polyvinyl acetal modified with at least one compound of general formula [1] is incorporated in the dye layer. In the general formula [1], R1is a substituted linear alkyl group, a substituted branched alkyl group or a substituted or unsubstituted cyclic group, and R2is a hydrogen atom, a substituted or unsubstituted linear alkyl group, a substituted or unsubstituted branched alkyl group or a substituted or unsubstituted cyclic group.

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