Pyrrolotriazole azomethine dye, and heat transfer dye providing material containing a pyrrolotriazole azomethine dye

A heat transfer dye providing material comprising a support having thereon a dye providing layer containing a heat migrating dye, said dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any one of formulae (I) or (II):

• ##STR92## wherein:
• R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represents hydrogen, halogen, alkyl, aryl, a heterocyclic substituent, cyano, hydroxyl, nitro, carboxyl, a sulfonic acid substituent, amino, alkoxy, aryloxy, acylamino, aminocarbonylamino, sulfamoylamino, alkylthio, arylthio, alkoxycarbonylamino, sulfonylamino, carbamoyl, sulfamoyl, sulfonyl, alkoxycarbonyl, heterocyclic oxy, azo, acyloxy, carbamoyloxy, silyloxy, aryloxycarbonyl, imido, heterocyclic thio, sulfinyl, phosphoryl, formyl, acyl, or azolyl;
• X represents --OH or --NR.sup.5 R.sup.6 ;
• R.sup.5 and R.sup.6 each independently represents hydrogen, alkyl, aryl, or a heterocyclic substituent;
• R.sup.7 represents an electrophilic group having a Hammett's substituent constant op of 0.15 or more;
• R.sup.8 and R.sup.9 each independently represents hydrogen, aryl, a heterocyclic substituent, alkyl, cyano, carboxyl, formyl, acyl, carbamoyl, alkoxycarbonyl, aryloxycarbonyl, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, sulfonylamino, aminocarbonylamino, sulfamoylamino, amino, alkoxy, aryloxy, silyloxy, heteryloxy alkylthio, arylthio, heterylthio, halogen, hydroxyl, nitro, sulfamoyl, sulfonyl, azo, acyloxy, carbamoyloxy, imido, sulfinyl, phosphoryl or azolyl;
• the sum of Hammett's substituent constant .sigma..sub.p of R.sup.7 and R.sup.8 is 0.65 or more;
• R.sup.1 and R.sup.2, R.sup.2 and R.sup.5, R.sup.5 and R.sup.6, R.sup.6 and R.sup.3, and R.sup.3 and R.sup.4 each are pairs of substituents selected from the group consisting of substituents which are independent from each other and substituents which are combined with each other to complete a ring;
• R.sup.7 and R.sup.87 are a pair of substituents selected from the group consisting of substituents which are independent from each other and substituents which are combined with each other to complete a ring;
• and
• Z represents hydrogen, halogen, arylthio, heterocyclic thio, arylsulfinyl, or nitroso.