Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising an organic lubricating material in a binder, the lubricating material comprising a nonhomogenous layer of a particulate ester wax comprising an ester of a fatty acid having at least 10 carbon atoms and a monohydric alcohol having at least 6 carbon atoms, the ester wax having a particle size of from about 0.5 .mu.m to about 20 .mu.m.

Abstract: A donor element for thermal transfer comprising a support having on one side thereof a fluorescent derivative of a 1,8-naphthalimide compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: ##STR1## wherein: R is hydrogen; a substituted or unsubstituted alkyl group of 1 to about 6 carbon atoms; or a carbocyclic or heterocyclic ring of about 5 to about 10 atoms; andD is a monovalent, nonionic, nonquenching moiety.

Abstract: A donor element for thermal transfer comprising a support having on one side thereof a fluorescent oxazole compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: ##STR1## wherein: J represents an ethylenic linking group; each J.sup.1 independently represents a monovalent bond or J; andeach X and Y independently represents hydrogen; a substituted or unsubstituted alkyl, alkylene or acyl group having from 1 to about 10 carbon atoms; a substituted or unsubstituted aryl group having from about 6 to about 10 carbon atoms; or the atoms necessary to complete a 5- or 6-membered carbocyclic or heterocyclic ring.

Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer, said slipping layer comprising a functionalized poly(dialkyl, diaryl or alkylaryl siloxane) and a hydrocarbon, easter or amide wax.

Abstract: A donor element for thermal transfer comprising a support having on one side thereof a fluorescent polycyclic-aromatic compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: ##STR1## wherein J represents the atoms necessary to complete one or two aromatic carbocyclic or heterocyclic rings.

Abstract: A donor element for thermal transfer comprising a support having on one side thereof a fluorescent diphenylpyrazoline compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: ##STR1## wherein: R is hydrogen, cyan; carboxyalkyl; a substituted or unsubstituted alkyl group of 1 to about 6 carbon atoms; or a substituted or unsubstituted aryl group of about 6 to about 10 carbon atoms; and J is hydrogen; a substituted or unsubstituted alkyl group of 1 to about 6 carbon atoms; a substituted or unsubstituted aryl group of about 6 to about 10 carbon atoms; or may represent --CH.sub.2 -- or --CH.sub.2 CH.sub.2 -- to complete a 5- or 6-membered non-aromatic carbocyclic ring.

Abstract: A dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye layer also containing at least one particulate polypropylene wax having an average particle size less than about 30 .mu.m and having a melting point above about 125.degree. C. Use of the particulate wax minimizes various printing defects without reducing gloss.

Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising a lubricating material dispersed in a water-insoluble, cellulosic binder, the lubricating material comprising dry, solid lubricant particles protruding from the surface of the slipping layer, such as poly(tetrafluoroethylene), poly(hexafluoropropylene) or poly(methylsilylsesquioxane).

Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side a dye layer and on the other side a subbing layer and a slipping layer comprising a lubricant dispersed in a binder, the subbing layer comprising a polymer having an inorganic backbone which is an oxide of a Group IVa or IVb element, such as a titanium or zirconium alkoxide, and the binder contains hydroxyl groups, such as a cellulosic binder.

Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising a lubricating material dispersed in a polymeric binder, the lubricating material comprising a partially esterified phosphate ester and a silicone polymer comprising units of a linear or branched alkyl or aryl siloxane.

Abstract: Dye-donor elements and assemblages for thermal dye transfer processing comprising a polymeric support having thereon, in order, a subbing layer and a dye layer comprising a dye dispersed in a binder, and wherein the subbing layer comprises a polymer having an inorganic backbone which is an oxide of a Group IVa or IVb element, preferably titanium, zirconium or silicon. In a preferred embodiment, the polymer is an organic titanate or a titanium alkoxide.

Abstract: Photographic assemblages are described employing positive-working redox dye-releasers and a cover sheet containing an oxidant having an electrode potential of from about -200 mV up to about 1000 mV versus a saturated calomel electrode at a pH of about 5 to about 6. The oxidant is capable of oxidizing electron transfer agent in the system. The reduced form of the oxidant is incapable of reducing the positive-working redox dye-releaser. After processing, the oxidant reacts with the electron transfer agent to prevent it from reacting with the dye releaser which would otherwise cause further dye release. D.sub.min stability is thereby improved.

Abstract: Aromatic nitro compounds are disclosed where the aromatic ring contains electron-withdrawing groups and said aromatic nitro compound is capable of undergoing intramolecular nucleophilic displacement after reduction of the nitro group. The compounds are especially useful in photographic elements where an image dye-providing material or a photographic reagent are released upon cleavage from the compound.

Abstract: Aromatic nitro compounds are disclosed where the aromatic ring contains electron-withdrawing groups and said aromatic nitro compound is capable of undergoing intramolecular nucleophilic displacement after reduction of the nitro group. The compounds are especially useful in photographic elements where an image dye-providing material or a photographic reagent are released upon cleavage from the compound.