| 摘要 |
A cyan dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of cyan dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: wherein: R1 and R2 each independently represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 6 carbon atoms; a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; or a substituted or unsubstituted aryl or hetaryl group having from about 6 to about 10 carbon atoms; or R1 and R2 represent atoms which can be joined together to form, along with the nitrogen to which they are attached, a 5- to 7-membered heterocyclic ring; or either or both of R1 and R2 together with one or two of R3 represent atoms which can form a 5- to 7-membered heterocyclic ring; each R3 independently represents substituted or unsubstituted alkyl, cycloalkyl, allyl, aryl or hetaryl as described above for R1 and R2; alkoxy, aryloxy, halogen, nitro, cyano, thiocyano, hydroxy, acyloxy, acyl, alkoxycarbonyl, aminocarbonyl, alkoxycarbonyloxy, carbamoyloxy, acylamido, ureido, imido, alkylsulfonyl, arylsulfonyl, alkylsulfonamido, arylsulfonamido, alkylthio, arylthio or trifluoromethyl; or atoms at any two adjacent positions of R3 may be combined together to form a 5or 6-membered carbocyclic or heterocyclic ring; m is an integer of from 0 to 4; R4 represents R5, alkylthio or arylthio, with the proviso that when R4 is alkylthio or arylthio, then m must be at least 1; and R5 represents a substituted or unsubstituted aryl or hetaryl group as described above for R1 and R2; and at least one of the other of the dyes having the formula: I I wherein: R1, R2, R3 and m represent the same as above; X represents hydrogen, halogen or may be combined together with Y to represent the atoms necessary to complete a 6-membered aromatic ring, thus forming a fused bicyclic quinoneimine, such as a naphthoquinoneimine; with the proviso that when X is hydrogen, then J represents NHCORF, where RF represents a perfluorinated alkyl or aryl group; and with the further proviso that when X is halogen, then J represents NHCOR6, NHCO2R6, NHCONHR6 or NHSO2R6; and with the further proviso that when X is combined with Y, then J represents CONHR6, SO2NHR6, CN, SO2R6 or SCN; R6 is a substituted or unsubstituted alkyl, cycloalkyl, allyl, aryl or hetaryl group as defined for R1 above; and Y is R1, acylamino or may be combined together with X as described above. |
