Cyan dyes
AssigneeSony Corporation
InventorsToshihisa Inoue, Tetsuya Abe, Yoshio Fujiwara
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Abstract
A cyan dye of the formula: ##STR1## wherein X.sup.1 represents halogen; X.sup.2 represents hydrogen, alkyl, alkoxy, halogen, alkylcarbonylamino or perfluoroalkyl; R.sup.1 and R.sup.2 independently represent alkyl, phenyl, perfluoroalkyl, halogen-substituted alkyl, or halogen-substituted phenyl or alkyl-substituted phenyl; R.sub.3 represents alkyl; R.sup.4 represents alkyl, alkoxy or perfluoroalkyl; and n is an integer of 1 or more. A thermal transfer sheet comprising a substrate and an ink layer, the ink layer comprising a cyan dye of the formula described above, is also disclosed.
Claims2
A cyan dye of the formula:
- ##STR20## wherein X.sup.1 represents chlorine, X.sup.2 represents hydrogen, methyl, or perfluoroalkyl;
- R.sup.1 represents methyl, propyl, phenyl, CF.sub.3, or perfluoroalkyl;
- R.sup.2 represents methyl, propyl, phenyl, chlorine-substituted phenyl or perfluoroalkyl;
- R.sup.3 represents ethyl;
- R.sup.4 represents ethyl, methyl, or alkoxy;
- and n is an integer of 1 or more.
A cyan dye selected from the group consisting of indoaniline derivatives of the following formulas (1) to (9):
- ##STR21##
Dependencies are inferred from the claim text.