| 摘要 |
The present invention provides a dye corresponding to the following general formula (I) and a dye-donor element for use according to thermal dye sublimation transfer. The dye-donor element comprises a support having thereon a dye layer comprising a polymeric binder and a dye corresponding to said general formula (I): <CHEM> wherein: A represents an electron withdrawing groups, e.g. CN, NO2, alkanoyl, alkenoyl, alkynoyl, aroyl, alkylsulphonyl, alkenylsulphonyl, alkynylsulphonyl, arylsulphonyl, carboxylic ester, carboxyl amide; Z represents hydrogen or a substituent, <CHEM> X represents N-R or R represents NR<3>R<4> or the residue of an aromatic coupling compound R-Q wherein Q is a group displaceable by a diazotised amine; R<1> represents NR<3>R<4>, OR<12> or SR<12>; R<2> represents hydrogen, cyano, COR<13>, CO2R<13>, CONR<14>R<15>, SO2R<16>; R<3> and R<4> each independently represent hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group or R<3> and R<4> together with the nitrogen atom to which they are attached represent the atoms necessary to complete a ring or R<3> and/or R<4> and one of the Y-substituents together with the atoms to which they are attached represent the necessary atoms to form a 5- or 6- membered, fused-on heterocyclic ring; Y represents a substituent, e.g. SH, OH, an amino group, a halogen, CN, NO2, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a thioalkoxy group, a carbamoyl group, a sulfamoyl.
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