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| Lift vehicle |
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| Wear resistant compound material, method for manufacturing it and use of such compound material |
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Mixture of dyes for black dye donor for thermal color proofing
| Details |
Inventors: Evans, Steven; Chapman, Derek D.;
Assignee: Eastman Kodak Company (Rochester, NY)
Primary Examiner: Hess; Bruce H.
Assistant Examiner:
Attorney, Agent or Firm: Cole; Harold E.
A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR1## and at least one of the yellow dyes having the formula: ##STR2## and at least one of the magenta dyes having the formula: ##STR3## |
|
DETAILED DESCRIPTION What is claimed is: 1.
A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR28## 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 an R.
sup.
3 to form a 5- to 7-membered heterocyclic ring; each R.
sup.
3 independently represents substituted or unsubstituted alkyl, cycloalkyl or allyl 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; m is an integer of from 0 to 4; R.
sup.
4 represents hydrogen or an electron withdrawing group; R.
sup.
5 represents an electron withdrawing group, a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms or a substituted or unsubstituted hetaryl group having from about 5 to about 10 atoms; R.
sup.
6 and R.
sup.
7 each independently represents an electron withdrawing group; and R.
sup.
6 and R.
sup.
7 may be combined to form the residue of an active methylene compound; and at least one of the yellow dyes having the formula: ##STR29## wherein: R.
sup.
8 represents the same groups as R
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