Azomethine compound and thermal transfer sheet using coloring matter of the azomethine compound

A thermal transfer sheet comprising at least a yellow dye layer, a magenta dye layer, and a cyan dye layer,

• the yellow dye layer, the magenta dye layer, and the cyan dye layer each comprising a base material and a dye layer that contains a dye coloring matter and a binder resin and is provided on the base material,
• the yellow dye comprising a dye coloring matter represented by formula Y-I and/or Y-II:
• wherein R1 represents an alkyl group, an aryl group, a hydrogen atom, or a halogen atom;
• and R2 represents a carbonylamino group or a carbonylalkoxy group, and
• wherein R3 represent an alkyl group, an aryl group, or a hydrogen atom;
• and R4 represents an alkyloxyl group, an aryloxy group, or an amino group,
• the magenta dye comprising a dye coloring matter represented by formula M-I:
• wherein
• R5 represents a C1-3 (number of carbon atoms) straight chain or branched chain alkyl group;
• and
• R6 and R7 each independently represent a C2-4 (number of carbon atoms) alkyl group,
• the cyan dye comprising a dye coloring matter represented by formula C-I:
• wherein R8 represents an alkyl group or an aryl group.