# US 5,352,653 A · Crosslinked dye-donor binder for thermal dye transfer systems

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- Number: US 5,352,653 A
- Document ID: US5352653A
- Status: Granted
- Kind: A
- Application number: 08/197,628
- Filed: 1994-02-16
- Granted: 1994-10-04
- Earliest claimed: 1994-02-16
- Assignees: Eastman Kodak Company
- Inventors: Linda S. Flosenzier; George B. Bodem
- Web page: https://patentgrep.com/patent/US5352653A

## CPC

- B41M 5/395: Macromolecular additives, e.g. binders
- Y10S 428/913: Material designed to be responsive to temperature, light, moisture
- Y10S 428/914: Transfer or decalcomania
- Y10T 428/31855: Of addition polymer from unsaturated monomers
- Y10T 428/31935: Ester, halide or nitrile of addition polymer
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

This invention relates to a dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising an image dye dispersed in a binder, wherein the binder contains hydroxyl groups which have been crosslinked with a titanium alkoxide crosslinking agent and the number of carbon atoms in the alkyl moiety of the alkoxide does not exceed four.

## Claims

### Claim 1

A dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising an image dye dispersed in a binder, wherein said binder contains hydroxyl groups which have been crosslinked with a titanium alkoxide crosslinking agent and the number of carbon atoms in the alkyl moiety of the alkoxide does not exceed four.

### Claim 2 (depends on 1)

The element of claim 1 wherein said titanium alkoxide is titanium tetra-n-butoxide.

### Claim 3 (depends on 1)

The element of claim 1 wherein said titanium alkoxide is titanium tetra-i-propoxide.

### Claim 4 (depends on 1)

The element of claim 1 wherein said binder is cellulose acetate propionate.

### Claim 5 (depends on 1)

The element of claim 1 wherein said binder is poly(vinyl acetal).

### Claim 6

A process of forming a thermal dye transfer image comprising:
a) contacting at least one dye-donor element comprising a support having thereon a dye layer comprising an image dye dispersed in a binder with a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer;
b) imagewise-heating said dye-donor element; and
c) transferring a dye image to said dye-receiving element to form said thermal dye transfer image,
wherein said binder contains hydroxyl groups which have been crosslinked with a titanium alkoxide crosslinking agent and the number of carbon atoms in the alkyl moiety of the alkoxide does not exceed four.

### Claim 7 (depends on 6)

The process of claim 6 wherein said titanium alkoxide is titanium tetra-n-butoxide.

### Claim 8 (depends on 6)

The process of claim 6 wherein said titanium alkoxide is titanium tetra-i-propoxide.

### Claim 9 (depends on 6)

The process of claim 6 wherein said binder is cellulose acetate propionate.

### Claim 10 (depends on 6)

The process of claim 6 wherein said binder is poly(vinyl acetal).

### Claim 11

A thermal dye transfer assemblage comprising:
(a) a dye donor element comprising a support having thereon a dye layer comprising a dye dispersed in a binder, and
(b) a dye-receiving element comprising a support having thereon a dye image-receiving layer, said dye-receiving element being in superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer,
wherein said binder contains hydroxyl groups which have been crosslinked with a titanium alkoxide crosslinking agent and the number of carbon atoms in the alkyl moiety of the alkoxide does not exceed four.

### Claim 12 (depends on 11)

The assemblage of claim 11 wherein said titanium alkoxide is titanium tetra-n-butoxide.

### Claim 13 (depends on 11)

The assemblage of claim 11 wherein said titanium alkoxide is titanium tetra-i-propoxide.

### Claim 14 (depends on 11)

The assemblage of claim 11 wherein said binder is cellulose acetate propionate.

### Claim 15 (depends on 11)

The assemblage of claim 11 wherein said binder is poly(vinyl acetal).