Ink jet ink set

An ink jet ink set comprising:

• a) a cyan ink comprising a carrier and a sulfonated copper phthalocyanine dye;
• b) a magenta ink comprising a carrier and an anthrapyridone magenta dye or metal complex magenta dye, or azo-naphthol derivative magenta dye or mixtures thereof;
• c) a yellow ink comprising a carrier and an azo pyrazoleazole yellow dye of the following structure (I):
• wherein R1 represents a hydrogen atom, a cyano group, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group, an alkylthio group, an arylthio group, an acyl group, a carboxyl group, a carbamoyl group, or a heterocyclic group;
• Za, Zb and Zc each independently represents —N═, —C(R8)═ or NH with the proviso that at least one of Za or Zc is —NH;
• R8 represents a hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group;
• R2 represents a hydrogen, an alkyl group, an aryl group, a halogen, a cyano group, a carboxyl group, an acyl group, a carbamoyl group, a nitro group, an alkyl or aryl sulfone group, a sulfonic acid group, a primary or secondary alkyl sulfonamide group, a aryl sulfonamide group or a heteroaryl group;
• R3 is a hydrogen or any non-metallic group;
• R4 is hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an alkynyl group, an aryl group, a heterocyclic group, a urethane, a sulfoalkyl or sulfoaryl group;
• or a pyrazoleazoindole yellow dye of the following structure (II);
• wherein R11 and R13 each independently represents hydrogen, an alkyl group of 1-6 carbon atoms, an allyl group, an aryl group of 6-10 carbon atoms, a heteroaryl group of 5-10 atoms or a polyoxyalkylene group of 2-20 alkylene oxide residues;
• R12, X and Y each independently represents hydrogen, an alkyl group of 1-6 carbon atoms, an allyl group, an aryl group of 6-10 carbon atoms, a heteroaryl group of 5-10 atoms, or a halogen, a cyano group, a carboxy group, an acyl group, a nitrogroup, a sulfo group, an alkoxy group of 1-6 carbon atoms, an aryloxy group of 6-10 carbon atoms, an alkoxy- or aryloxy-carbonyl group of 1-10 carbon atoms, a polyoxyalkylene group of 2-20 alkylene oxide residues, a ureido group, a carbamoyl group, analkyl-, arylalkyl-, aryl-, diaryl- or dialkyl-carbamoyl group of 1-20 carbon atoms, a sulfamoyl group, an alkyl-, arylalkyl-, aryl-, diaryl- or dialkyl-sulfamoyl group of 1-20 carbon atoms, an alkyl- or arylsulfonyl group, an acylamino group, a sulfonylamino group, an amino group, or an alkyl-, aralkyl-, aryl-, diaryl- or dialkyl-amino group of 1-20 carbon atoms;
• n represents an integer from 1-4;
• and Z represents a cyano group, a carboxy group, a sulfo group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, an alkyl- or arylsulfonyl group, an alkyl-, arylalkyl-, aryl-, diaryl- or dialkyl-sulfamoyl group of 1-20 carbon atom or an alkyl-, arylalkyl-, aryl-, diaryl- or dialkyl-carbamoyl group of 1-20 carbon atoms;
• with the proviso that the dye of structure (I) and (II) must contain at least one group capable of imparting water solubility at a pH of about 4-9 and said dyes may contain a counterion if necessary;
• or mixtures of (I) and (II) above and;
• d) a black ink comprising a carrier and a metal complex black dye.