Dye-donor element for thermal dye sublimation transfer

Claim 1

Dye-donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer containing a binder and a dye corresponding to general formula (I) ##STR60## wherein X and Y each independently represent C═O, C═S, SO 2 , C═U with U a group derived from an electronegative active methylene group; A represents the atoms necessary to complete a 5- or 6-membered unsubstituted or substituted ring including such ring with an aromatic nucleus fused-on; Z represents N or CR 2 wherein R 2 represents H, CN, COOR 1 ", NR 5 'R 6 ', OR 7 ', SR 7 ', or an electronegative active methylene group, wherein R 1 " represents hydrogen or an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group and wherein R 5 ' and R 6 ' each independently represent hydrogen, an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group or R 5 ' and R 6 ' may be combined together with the nitrogen to which they are attached to form a heterocyclic ring system and wherein R 7 ' represents hydrogen or an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group, or R 2 may be combined with R so that Z--R represents ##STR61## wherein V represents O, S, Se, Te, NR 9 wherein R 9 represents hydrogen, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an amino group, and wherein R 8 represents an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group, and wherein p represents 1, 2, 3 or 4 (when p equals 2, 3 or 4 the R 8 groups may be the same or different); R represents Ar--NR 3 R 4 , Ar'--N═N--Ar--NR 3 R 4 , Het--N═N--Ar--NR 3 R 4 , Het--N═CR 2 '--NR 5 R 6 or Ar--(OR 7 ) m , wherein Ar and Ar' each independently represent an unsubstituted or substituted aryl nucleus including fused aromatic nuclei and wherein Het represents an unsubstituted or substituted 5-membered or 6-membered heterocyclic ring and wherein R 3 and R 4 each independently represent hydrogen, an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group or R 3 and R 4 may be combined together with the nitrogen to which they are attached to form a heterocyclic ring system or R 3 and/or R 4 may be combined with Ar to form a heterocyclic ring system and wherein R 2 ' has one of the significations given for R 2 and wherein R 5 and R 6 have one of the significations given for R 5 ' and R 6 ' and wherein R 7 has one of the significations given for R 7 ' and wherein m represents 1, 2 or 3 (when m equals 2 or 3 the R 7 groups may be the same or different), or R may be combined with R 2 (in case Z is CR 2 ) so that Z--R represents ##STR62## wherein V represents O, S, Se, Te, NR 9 wherein R 9 represents hydrogen, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an amino group, and wherein R 8 represents an unsubstituted or substituted alkyl group or a unsubstituted or substituted aryl group, and wherein p represents 1, 2, 3 or 4 (when p equals 2, 3 or 4 the R 8 groups may be the same or different).