| 摘要 |
This invention provides thermal transfer sheets that have excellent strength of adhesion between a dye layer and a base material, have high reflection density, have good releasability from an image receiving sheet at the time of printing even after storage under high temperature and high humidity conditions, can produce thermally transferred images with high sharpness and can produce satisfactory prints. Specifically, there are provided a thermal transfer sheet characterized in that an undercoating layer formed of a thermoplastic resin and colloidal inorganic pigment ultrafine particles and a dye layer are provided in that order on one side of a base material, and a thermal transfer sheet characterized in that an undercoating layer formed of colloidal inorganic pigment ultrafine particles and silicate or aluminum alcoholate, and a dye layer are provided in that order on one side of a base material.
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