SUBLIMATION HEAT TRANSFER SHEET

To provide a sublimation type heat transfer sheet capable of forming an image that has good adhesiveness to a protective layer, and capable of showing a good releasability of its dye layers during the image formation. The disclosed is a sublimation type thermal transfer sheet in which a first dye layer (3Y), a second dye layer (3M), and a third dye layer (3C) are frame sequentially provided on a surface of a substrate in this order, and a back-face layer is provided on another surface of the substrate, wherein the first dye layer (3Y), the second dye layer (3M), and the third dye layer (3C) contain an each individual sublimable dye and an each individual binder resin, one of the first dye layer and the second dye layer further contains at least a releasing agent selected from a first group consisting of silicone oils, silicone-modified resins and phosphoric esters, and another dye layer further contains either one or both of at least a releasing agent selected from the first group and a cellulosic resin, and the third dye layer (1) contains no releasing agent of the first group, or (2) contains the releasing agent at an amount of not more than 0.3 % by weight based on the total weight of the solid content of the third dye layer at the most.