Dye-donor element for use according to thermal dye sublimation transfer

• US 5,308,736 A
• Filed: 08/13/1992
• Issued: 05/03/1994
• Est. Priority Date: 09/10/1991
• Status: Expired due to Fees

• Current Assignee: Agfa-Gevaert N.V.
• Original Assignee: Agfa-Gevaert N.V.
• Inventors: Wehrmann, Rolf, Ebert, Wolfgang, Uytterhoeven, Herman J., Defieuw, Geert H.
• Primary Examiner(s): Bowers, Jr., Charles L.
• Assistant Examiner(s): Angebranndt, Martin J.
• Application Number:
  US07/928,735
• Time in Patent Office: 628 Days
• Field of Search: 430/200, 430/201, 430/203, 503/227, 524/280, 524/281, 588/270, 588/274
• US Class Current: 430/200
• CPC Class Codes: B41M 5/392 Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
• CPC Class Codes: B41M 5/423 characterised by non-macromolecular compounds, e.g. waxes

Abstract

Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side thereof a dye layer and containing a substituted di(hetero)aryl carbonate as thermal solvent.

Claims

1. Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side thereof (i) a dye layer containing a dye and binder and (ii) a thermal solvent, said thermal solvent being a substituted di(hetero)aryl carbonate.

2. Dye-donor element according to claim 1, wherein the (hetero)aryl group is selected from the group consisting of phenyl, naphthyl, thiophene and pyridine.

3. Dye-donor element according to claim 1 wherein the two (hetero)aryl groups are the same.

4. Dye-donor element according to claim 1, wherein the substituents on the (hetero)aryl groups are selected from the group consisting of alkyl groups, cycloalkyl groups, aralkyl groups, aryl groups, alkoxy groups, aryloxy groups, acyl groups, ester groups, amide groups, amine groups, ether groups, carbonate groups, halogen atoms, hydroxy groups, nitrile groups.

5. Dye-donor element according to claim 1, wherein the substituted di(hetero)aryl carbonate corresponds to the following formula ##STR13## wherein:

each of R¹ to R¹⁰ (same or different) represents hydrogen, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkoxy group, an aryloxy group, an acyl group, an ester group, an amide group, an amine group, an ether group, a carbonate group, a halogen atom, an hydroxy group, a nitrile group, with the proviso that at least one of R¹ to R¹⁰ does not represent hydrogen.

6. Dye-donor element according to claim 5, wherein the sum of the molecular weights of the substituents R¹ -R¹⁰ is between 30 and 300.

7. Dye-donor element according to claim 5, wherein R³ and R⁸ both represent an alkyl group or a cycloalkyl group or an aryl group or an aralkyl group and wherein R¹, R², R⁴ to R⁷, R⁹ and R¹⁰ represent hydrogen.

8. Dye-donor element according to claim 1, wherein the di(hetero)aryl carbonate is contained in the dye layer.

9. Dye-donor element according to claim 8 wherein the amount of di(hetero)aryl carbonate is between 1 and 50% by weight of the dye layer binder.

10. Dye-donor element according to claim 9, wherein the binder is poly(styrene-co-acrylonitrile).