Patent ID: 6221807
Filing Date: 2001-04-24
Classification: B41M,Y10S

Abstract:
A red dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of a magenta dye and two yellow dyes dispersed in a polymeric binder, said magenta dye having the formula A ##STR14##wherein:R.sup.1 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.2 forms a 5- or 6-membered ring;R.sup.2 represents any of the groups for R.sup.1 or represents the atoms which when taken together with X forms a 5- or 6-membered ring;R.sup.3 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.5 --;R.sup.4 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.5 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;the first yellow dye having the following formula B: ##STR15##wherein:R.sup.13 represents a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 10 carbon atoms or a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms;R.sup.14 represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms, a cycloalkyl group of from about 5 to about 7 carbon atoms, or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms; andR.sup.15 and R.sup.16 each independently represents hydrogen or a substituted or unsubstituted alkyl or alkoxy group having from 1 to about 4 carbon atoms; andthe second yellow dye having the formula C: ##STR16##wherein:R.sup.8, R.sup.9 and R.sup.11 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms; a cycloalkyl group of from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; or a substituted or unsubstituted aryl group of from about 6 to about 10 carbon atoms;or R.sup.8 and R.sup.9 can be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;or either or both of R.sup.8 and R.sup.9 can be joined to the carbon atom of the benzene ring at a position ortho to the position of attachment of the anilino nitrogen to form a 5- or 6-membered ring, thus forming a polycyclic system;R.sup.10 represents hydrogen; a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms; a cycloalkyl group of from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; carbamoyl; or alkoxycarbonyl;R.sup.12 represents a substituted or unsubstituted alkoxy group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryloxy group having from about 6 to about 10 carbon atoms; NHR.sup.17 ; NR.sup.17 R.sup.18 or the atoms necessary to complete a 6-membered ring fused to the benzene ring;R.sup.17 and R.sup.18 each independently represents any of the groups for R.sup.8 ;or R.sup.17 and R.sup.18 may be joined together to form, along with the nitrogen to which they are attached, a 5- or 6-membered heterocyclic ring;n is a positive integer from 1 to 5; andG represents a substituted or unsubstituted alkyl or alkoxy group of from 1 to about 10 carbon atoms; halogen; aryloxy; or represents the atoms necessary to complete a 5- or 6-membered ring, thus forming a fused ring system.