The present invention provides a Sublimation thermal transfer sheet capable of coping with high-speed printers, securing desired densities, and further excellent in the lightfastness and the durability of the print, and a combination of the Sublimation thermal transfer sheet and a transfer receiving article. In the Sublimation thermal transfer sheet provided with at least a yellow colorant layer, a magenta colorant layer, and a cyan colorant layer provided in this order on a substrate, as being frame sequentially, predetermined colorants are contained in predetermined contents in the yellow colorant layer and the magenta colorant layer.

A sublimation thermal transfer sheet and combination of a sublimation thermal transfer sheet and a transfer receiving article that meet the demand for increase in the density of a color image to be formed, that prevent decrease in the adhesiveness of a protective layer optionally formed on the color image, and that also have superior light resistance. In a sublimation thermal transfer sheet including a substrate and yellow, magenta, and cyan colorant layers provided on one surface of the substrate, the yellow and the above magenta colorant layers each contain a predetermined amount of a high- sublimable dye having a molar absorption coefficient of not less than 50000 and a molecular weight of not more than 650, and the cyan colorant layer contains a predetermined amount of a high- sublimable dye having a molar absorption coefficient of not less than 20000 and a molecular weight of not more than 420.

A sublimation thermal transfer sheet and combination of a sublimation thermal transfer sheet and a transfer receiving article that meet the demand for increase in the density of a color image to be formed, that prevent decrease in the adhesiveness of a protective layer optionally formed on the color image, and that also have superior light resistance. In a sublimation thermal transfer sheet including a substrate and yellow, magenta, and cyan colorant layers provided on one surface of the substrate, the yellow and the above magenta colorant layers each contain a predetermined amount of a high- sublimable dye having a molar absorption coefficient of not less than 50000 and a molecular weight of not more than 650, and the cyan colorant layer contains a predetermined amount of a high- sublimable dye having a molar absorption coefficient of not less than 20000 and a molecular weight of not more than 420.

Provided are a sublimation thermal transfer sheet and a combination of a sublimation thermal transfer sheet and a transfer receiving article that meet the demand for increase in the density of a color image to be formed, that prevent decrease in the adhesiveness of a protective layer optionally formed on the color image.

In a sublimation thermal transfer sheet including a substrate and yellow, magenta, and cyan colorant layers provided on one surface of the substrate, the yellow, magenta, and cyan colorant layers each contain at least a binder resin and a sublimable dye having a molar absorption coefficient of not less than 50000 and a molecular weight of not more than 650, and the average of the mass ratios of the respective binder resins and sublimable dyes (sublimable dye/binder resin) in the yellow, magenta, and cyan colorant layers is not less than 0.7.

In a thermal transfer recording sheet including a base material and a colorant layer, the colorant layer includes a yellow dye layer containing a yellow dye, a magenta dye layer containing a magenta dye, and a cyan dye layer containing a cyan dye, and the cyan dye includes a compound represented by Formula (Ia) or Formula (Ib):

##STR00001##

where R.sub.1 to R.sub.7 are substituents, X.sup. is an anion, and the compound of Formula (Ib) has at least one anionic substituent.

In a thermal transfer recording sheet including a base material and a colorant layer, the colorant layer includes a yellow dye layer containing a yellow dye, a magenta dye layer containing a magenta dye, and a cyan dye layer containing a cyan dye, and the cyan dye includes a compound represented by Formula (Ia) or Formula (Ib):

##STR00001##

where R.sub.1 to R.sub.7 are substituents, X.sup. is an anion, and the compound of Formula (Ib) has at least one anionic substituent.

A core-shell dye including a core having a compound represented by Chemical Formula 1 and a shell surrounding the core and represented by Chemical Formula 2 or Chemical Formula 3, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition. ##STR00001##
(In Chemical Formulae 1 to 3, each substituent is the same as defined in the specification.)

A core-shell dye including a core having a compound represented by Chemical Formula 1 and a shell surrounding the core and represented by Chemical Formula 2 or Chemical Formula 3, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition. ##STR00001##
(In Chemical Formulae 1 to 3, each substituent is the same as defined in the specification.)