Patent ID: 6232269
Filing Date: 2001-05-15
Classification: B41M,Y10S

Abstract:
A blue dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of a cyan dye and a magenta dye dispersed in a polymeric binder, said cyan dye having the formula A: ##STR10##wherein:R.sup.1 and R.sup.2 each independently represents hydrogen, a substituted or unsubstituted alkyl group having from 1 to about 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having from about 5 to about 7 carbon atoms, or a substituted or unsubstituted allyl group;with the proviso that R.sup.1 and R.sup.2 cannot both be hydrogen;or R.sup.1 and R.sup.2 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 R.sup.1 and R.sup.2 can be combined with R.sup.3 to form a 5- to 7-membered heterocyclic ring;each R.sup.3 independently represents a substituted or unsubstituted alkyl, cycloalkyl or allyl group as described above for R.sup.1 and R.sup.2, alkoxy, aryloxy, halogen, thiocyano, acylamido, ureido, alkylsulfonamido, arylsulfonamido, alkylthio, arylthio or trifluoromethyl;or any two of R.sup.3 may be combined together to form a 5- or 6-membered carbocyclic or heterocyclic ring;or one or two of R.sup.3 may be combined with either or both of R.sup.1 and R.sup.2 to complete a 5- to 7-membered ring;R.sup.4 represents hydrogen or an electron withdrawing group;R.sup.5 represents an electron withdrawing group, an aryl group having from about 6 to about 10 carbon atoms, or a hetaryl group having from about 5 to about 10 atoms;R.sup.6 and R.sup.7 each independently represents an electron withdrawing group;or R.sup.6 and R.sup.7 may be combined to form the residue of an active methylene compound; andm is an integer of from 0 to 4; andsaid magenta dye having the formula B ##STR11##wherein:R.sup.8 represents a substituted or unsubstituted alkyl or allyl group of from 1 to about 6 carbon atoms;X represents an alkoxy group of from 1 to about 4 carbon atoms or represents the atoms which when taken together with R.sup.9 forms a 5- or 6-membered ring;R.sup.9 represents any of the groups for R.sup.8 or represents the atoms which when taken together with X forms a 5- or 6-membered ring;R.sup.10 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms;J represents CO, CO.sub.2, --SO.sub.2 -- or CONR.sup.12 --;R.sup.11 represents a substituted or unsubstituted alkyl or allyl group of from 1 to about 10 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; andR.sup.12 represents hydrogen, a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms.