Yellow dye mixture for thermal color proofing

B - Operations – Transporting – 41 – M

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Details

B41M 5/26 (2006.01) B41M 5/035 (2006.01) C09B 67/22 (2006.01) G03F 3/10 (2006.01)

Patent

CA 2055692

YELLOW DYE MIXTURE FOR THERMAL COLOR PROOFING Abstract of the Disclosure 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: I Image wherein: Rl represents hydrogen or halogen; each R2 independently represents hydroxy, alkoxy, aryloxy, acyloxy, aminocarbonyl, carbamoyl.oxy, halogen, aryl, hetaryl, cyano, acylamido, alkoxycarbonyl, alkylthio, arylthio, alkylsulfonyl, arylsulfonyl, alkylsulfonamido or arylsulfonamido; or any two adjacent R2's together represent the atoms necessary to complete a 5- or 6-membered fused saturated or aromatic ring; Y represents H or OH; and n is an integer from 0 to 4; or any two adjacent Rl's together represent the atoms necessary to form a 5- or 6-membered fused ring; n represents an integer from 0-4; and at least one of the other of the dyes having the formula: Image I I wherein: R3 and R4 each independently represents a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms, a cycloalkyl group of from about 5 to about 7 carbon atoms; a substituted or unsubstituted allyl group; an aryl group of from about 6 to about 10 carbon atoms; a hetaryl group of from 5 to 10 atoms; acyl; arylsulfonyl; aminocarbonyl; aminosulfonyl; fluorosulfonyl; halogen; nitro; alkylthio; or arylthio; R5 represents H, a substituted or unsubstituted alkyl, allyl, aryl or hetaryl group as described above for R3; halogen; carbamoyl; cyano; or alkoxycarbonyl; each R6 independently represents substituted or unsubstituted alkyl, aryl, allyl or hetaryl groups such as those listed above for R3; hydroxy, alkoxy, aryloxy, acyloxy, aminocarbonyl, aminosulfonyl, carbamoyloxy, halogen, aryl, cyano, nitro, trifluoromethyl, fluorosulfonyl, acylamido, alkoxycarbonyl, alkylthio, arylthio, alkylsulfonyl, arylsulfonyl, alkylsulfonamido or arylsulfonamido; or two adjacent R6's together represent the atoms necessary to complete a 5- or 6-membered fused saturated or aromatic ring; X represents CR7 or N; R7 represents the same groups as R5; and m is an integer from 0 to 5.

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