THERMAL PRINT ELEMENT COMPRISING A MAGENTA 3-ARYL-2-ARYLAZO-5-AMINOTHIAZOLE OR AMINOTHIOPHENE DYE STABILIZED WITH A CYAN INDOANILINE DYE

摘要

-i- THERMAL PRINT ELEMENT COMPRISING A MAGENTA 3-ARYL-2-ARYLAZO-5-AMINOTHIAZOLE OR AMINOTHIOPHENE DYE STABILIZED WITH A CYAN INDOANILINE DYE A thermal print element comprising a support having thereon a layer containing a thermally-trans-ferred dye image, the dye image comprising a magenta dye having the following formula: wherein: wherein R1 and R2 are each independently hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, or aryl group, or may be joined together to form a 5- or 6-membered, substituted or unsubstituted, heterocyclic ring system; R3 is a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms; R4 represents at least one electron withdrawing group; X is =N- or ; and R5 is hydrogen, alkoxycarbonyl, cyano, halogen, carbamoyl, acyl, alkylsulfonyl, arylsulfonyl, sulfamoyl or alkyl, or may represent the atoms necessary to join with R2 to form a 5- to 7-membered, substituted or unsubstituted, heterocyclic ring system; -ii-the dye image also comprising a cyan indoaniline dye in the same areas as the magenta dye to provide improved stability to light for the magenta dye, the cyan indoaniline dye having the formula: wherein: R6 and R7 are each independently hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, or aryl group; R8 represents hydrogen, a substituted or unsubstituted alkyl group, alkoxy, halogen, -NHCOR1 or -NHSO2R1; R9 represents hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, or aryl group, -CONHR6,-CN,--Cl,-NHCOR6,-NHCO2R6, -NHCONHR6, -NHCON(R6)2, -SO2NHR6, -NHSO2R6, -SCN or ; Y represents hydrogen or the atoms necessary to complete a 5- or 6-membered. substituted or unsubstituted, carbocyclic or heterocyclic ring system; n is 1-4; and m is 1-4.