Yellow dye mixture for thermal color proofing

Details Yellow dye mixture for thermal color proofing Yellow dye mixture for thermal color proofing

B - Operations, Transporting

41

M

B41M 5/26 (2006.01) B41M 5/035 (2006.01) C09B 29/42 (2006.01) G03F 3/10 (2006.01)

Patent

CA 2055386

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: each Rl 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; an aryl group of from about 6 to about 10 carbon akoms; a hetaryl group of from 5 to 10 atoms; acyl; arylsulfonyl; aminocarbonyl; aminosulfonyl; fluorosulfonyl; halogen; nitro; alkylthio; or arylthio; 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; R2 represents hydrogen; a substitu ed or unsubstituted alkyl, cycloalkyl, allyl, aryl or hetaryl group as described above for Rl; cyano; acyl; alkylsulfonyl; arylsulfonyl; or alkoxycarbonyl; Z represents cyano; alkoxycarbonyl; acyl; nitro; arylsulfonyl or alkylsulfonyl; Y represents hydrogen; a substituted or unsubstituted alkyl, cycloalkyl, allyl, aryl or hetaryl group as described above for Rl; amino; alkylamino; arylamino; acylamino; or sulfonylamino; and at least one of the other of the dyes having the formula: I I Image wherein: R3 represents the same groups as above; R4 and R5 each independently represents hydrogen, R3; cyano; acyloxy; alkoxy of 1 to about 6 carbon atoms; halogen; or alkoxycarbonyl; or any two of R3, R4 and R5 together represent the atoms necessary to complete a 5- to 7-membered ring; R6 represents the same groups as R3; G represents a substituted or unsubstituted alkyl, cycloalkyl or allyl group as described above for R3, NR7R8 or OR9; R7 and R8 each independently represents hydrogen, acyl or R3, with the proviso that R7 and R8 cannot both be hydrogen at the same time; or R7 and R8 together represent the atoms necessary to complete a 5- to 7- membered ring; R9 represents the same groups as R3; X represents C(R10)(Rll), S, O or NR10; R10 and Rll each independently represents the same groups as R3; or R10 and Rll 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.

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