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

摘要

A thermal transfer ink sheet having a dye layer containing a polyvinyl acetal modified with a compound of the formula [1] and a polyvinyl acetal modified with a compound of the formula [2]:; ;wherein R¹ represents a substituted alkyl group, etc; R² represents H, etc;; ;wherein R³ represents a linear hydrocarbon group, etc; R⁴ represents a hydrogen atom, etc.