| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of retransfer and improve the printing accuracy by forming a heat-resistant lubricating layer formed on the base sheet main surface side opposite to a thermal transfer dye layers by using phosphate having its melting point of specified value and polyvinyl acetal resin having its glass transition point of specified value. SOLUTION: First - third thermal transfer dye layers 2-4 are formed adjoining one another successively on the side of one main surface 1a of a base sheet 1 of a thermal transfer sheet, and a sensing mark is formed adjoining a first heat transfer dye layer 2. Respective heat transfer dye layers 2-4 are composed of a sublimate dye, a binder and the like, and respectively different color dyes are contained. A heat-resistant lubricating layer 5 is formed on the side of a main surface 1b on the opposite side of the main surface 1a on which the first - third transfer dye layers 2-4 of the base sheet 1 of the thermal transfer sheet are formed, and phosphate having the melting point of 35 deg.C or above of 5-50 pts.wt. ratio is contained in the heat-resistant lubricating layer, and also polyvinyl acetal resin having its glass transition point of 80 deg.C or above is contained therein. |
