Thermal dye transfer dye-donor element with transferable protection overcoat
AssigneeEastman Kodak Company
InventorsWilliam Henry Simpson, David P. Brust, Jacob John Hastreiter, Jr., Mary Catherine S. Oldfield
Life of this patent
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Abstract
A dye-donor element for thermal dye transfer comprising a support having thereon at least one dye layer area comprising an image dye in a binder and another area comprising a transferable protection layer, the transferable protection layer area being approximately equal in size to the dye layer area, wherein the transferable protection layer comprises either a) poly(vinyl formal), poly(vinyl benzal) or poly(vinyl acetal) containing at least about 5 mole % hydroxyl and a crosslinking agent, or b) a phenoxy resin.
Claims17
A dye-donor element for thermal dye transfer comprising a support having thereon at least one dye layer area comprising an image dye in a binder and another area comprising a transferable protection layer, said transferable protection layer area being approximately equal in size to said dye layer area, wherein said transferable protection layer comprises either
- a) poly(vinyl formal), poly(vinyl benzal) or poly(vinyl acetal) containing at least about 5 mole % hydroxyl and a crosslinking agent, or
- b) a phenoxy resin and a crosslinking agent.
A process of forming a protection layer on top of a thermal dye transfer image comprising:
- (I) imagewise-heating a dye-donor element comprising a support having thereon a dye layer comprising an image dye in a binder, said dye-donor being in contact with a dye-receiving element, thereby transferring a dye image to said dye-receiving element to form said dye transfer image;
- and
- (II) thermally transferring a protection layer on top of said transferred dye image, said protection layer being applied from an element which contains either
- a) poly(vinyl formal), poly(vinyl benzal) or poly(vinyl acetal) containing at least about 5 mole % hydroxyl and a crosslinking agent, or
- b) a phenoxy resin and a crosslinking agent.
A thermal dye transfer assemblage comprising
- (A) a dye-donor element for thermal dye transfer comprising a support having thereon at least one dye layer area comprising an image dye in a binder and another area comprising a transferable protection layer, said transferable protection layer area being approximately equal in size to said dye layer area, and
- (B) a dye receiving element comprising a support having thereon a dye image-receiving layer,
- said dye-receiving element being in a superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer;
- wherein said transferable protection layer comprises either
- a) poly(vinyl formal), poly(vinyl benzal) or poly(vinyl acetal) containing at least about 5 mole % hydroxyl and a crosslinking agent, or
- b) a phenoxy resin and a crosslinking agent.
Dependencies are inferred from the claim text.