Nitropyrazolylazoanilinfarbstoffgebendes Element für thermische Farbstoffübertragung

摘要

A dye donor element for thermal dye transfer has a support carrying 4-nitro-pyrazol-5-yl-azoaniline magenta dye of formula (I) in a binder. In (I), R1 = an opt. substd. 1-12C alkyl, 6-10C aryl, 5-7C cycloalkyl or allyl gp.; R2 = H or R1; R1 + R2 may form a 5- or 6-membered ring, or R1 + R3 and/or R2 + R3 may form a 5- or 6-membered ring; R3 = e.g. H, acyloxy, alkoxy, aryloxy, alkyl(or aryl)thio, alkyl (or aryl) sulphonyl, alkyl(or aryl)aminosulphonyl, succinimido or phthalimido; two adjacent R3s may combine to form a 5- or 6-membered carbo- or heterocyclic satd. or aromatic ring; R4 = as for R2; R5 = as for R1, or acetyl, aroyl, alkyl(or aryl) sulphonyl or opt. substd. vinyl; and n = 1-4. Also claimed are (A) a thermal dye transfer assembly, and (B) forming a dye image.