| 摘要 |
A yellow dye-donor element for thermal dye transfer comprises a support having thereon a dye layer comprising a mixture of yellow dyes dispersed in a polymeric binder, at least one of the yellow dyes having the formula: <CHEM> wherein: R<1> is a substituted or unsubstituted alkyl group of from 1 to 10 carbon atoms; a substituted or unsubstituted cycloalkyl group of from 5 to 7 carbon atoms; an allyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted hetaryl group of from 5 to 10 atoms; R<2> is any of the groups for R<1> or represents the atoms which when taken together with Z form a 5- or 6-membered ring; Z is hydrogen; any of the groups for R<1>; alkoxy; halogen; aryloxy; or represents the atoms which when taken together with R<2> forms a 5- or 6-membered ring; each Y independently represents any of the groups for R<1>; alkoxy of from 1 to 10 carbon atoms; halogen; or two adjacent Y's together represent the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system; and n is a positive integer from 1 to 3; and at least one of the other of the dyes has the formula: <CHEM> wherein: R<3> represents the same groups as R<1> above; R<4> and R<5> each independently represents hydrogen, R<3>; cyano; acyloxy; alkoxy of 1 to carbon atoms; halogen; or alkoxycarbonyl; or any two of R<3>, R<4> and R<5> together represent the atoms necessary to complete a 5- to 7-membered ring; R<6> represents the same groups as R<3>; G represents a substituted or unsubstituted alkyl, cycloalkyl or allyl group as described above for R<3>, NR<7>R<8> or OR<9>; R<7> and R<8> each independently represents hydrogen, acyl or R<3>, with the proviso that R<7> and R<8> cannot both be hydrogen at the same time; or R<7> and R<8> together represent the atoms necessary to complete a 5- to 7-membered ring; R<9> represents the same groups as R<3>; X represents C(R<1><0>)(R<1><1>), S, O or NR<1><0>; R<1><0> and R<1><1> each independently represents the same groups as R<3>; or R<1><0> and R<1><1> together represent the atoms necessary to complete a 5- to 7-membered ring; and J represents the atoms necessary to complete a 5- or 6-membered ring which may be fused to another ring system. |
