Receiving element for use in thermal dye transfer

• US 5,244,861 A
• Filed: 07/31/1992
• Issued: 09/14/1993
• Est. Priority Date: 01/17/1992
• Status: Expired due to Term

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Harrison, Daniel J., Campbell, Bruce C., Mruk, William A., Lee, Jong S., Maier, Larry K., Warner, Cheryl L.
• Primary Examiner(s): Hess, Bruce H.
• Application Number:
  US07/922,927
• Time in Patent Office: 410 Days
• Field of Search: 8/471, 428/195, 428/286, 428/313.3, 428/315.5, 428/316.6, 428/317.9, 428/323, 428/910, 428/913, 428/914, 503/227
• US Class Current: 503/227
• CPC Class Codes: B41M 2205/32 Thermal receivers
• CPC Class Codes: B41M 5/42 Intermediate, backcoat, or covering layers B41M5/405 takes precedence; multilayer thermal transfer systems in general B41M5/38214
• CPC Class Codes: B41M 5/426 characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
• CPC Class Codes: B41M 5/44 characterised by the macromolecular compounds
• CPC Class Codes: Y10S 428/91 Product with molecular orientation
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10S 428/914 Transfer or decalcomania
• CPC Class Codes: Y10T 428/249978 Voids specified as micro
• CPC Class Codes: Y10T 428/249987 With nonvoid component of specified composition
• CPC Class Codes: Y10T 428/249989 Integrally formed skin

Abstract

Thermal dye transfer receiving elements are disclosed comprising a base having thereon a dye image-receiving layer, the base comprising a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base. The composite film comprises a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface (skin) layer.

Claims

1. In a dye-receiving element for thermal dye transfer comprising a base having thereon a dye image-receiving layer, the improvement wherein the base comprises a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base, and the composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer.

2. The element of claim 1, wherein the thickness of the composite film is from 30 to 70 μ

m.

3. The element of claim 1, wherein the core layer of the composite film comprises from 30 to 85% of the thickness of the composite film.

4. The element of claim 1, wherein the overall density of the composite film is from 0.3 to 0.7 g/cm³.

5. The element of claim 1, wherein the composite film comprises a microvoided thermoplastic core layer having a substantially void-free thermoplastic surface layer on each side thereof.

6. The element of claim 1, wherein the support comprises synthetic paper.

7. The element of claim 1, wherein the support comprises a non-voided polymer film.

8. The element of claim 1, wherein the support comprises cellulose fiber paper.

9. The element of claim 8, wherein the paper support is from 120 to 250 μ

m thick and the composite film is from 30 to 50 μ

m thick.

10. The element of claim 8, further comprising a polyolefin backing layer on the side of the support opposite to the composite film.

11. The element of claim 10, wherein the polyolefin backing layer is present at a coverage of from 30 to 75 g/m².

12. The element of claim 1, wherein the composite film comprises a microvoided and orientated polypropylene core layer with a surface layer of non-microvoided orientated polypropylene on each side.

13. The element of claim 12, wherein the thickness of the composite film is from 30 to 70 μ

m.

14. The element of claim 12, wherein the support is a cellulose fiber paper support from 120 to 250 μ

m thick and the composite fi]m is from 30 to 50 μ

m thick.

15. The element of claim 1, wherein the core layer of the composite film comprises a microvoided and orientated thermoplastic polymer and a polymeric void-initiating material.

16. In a process of forming a dye transfer image comprising:

a) imagewise-heating a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a binder, and

b) transferring a dye image to a dye-receiving element comprising a base having thereon a dye image-receiving layer to form said dye transfer image,

the improvement wherein the dye-receiving element base comprises a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base, and the composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer.

17. The process of claim 16, wherein the composite film comprises a microvoided thermoplastic core layer having a substantially void-free thermoplastic surface layer on each side thereof, the thickness of the composite film being from 30 to 70 μ

m.

18. The process of claim 16, wherein the support comprises cellulose fiber paper from 120 to 250 μ

m thick and the composite film is from 30 to 50 μ

m thick and comprises a microvoided and orientated polypropylene core layer with a surface layer of non-microvoided orientated polypropylene on each side.

19. In 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 a superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer,

The improvement wherein the dye-receiving element base comprises a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base, and the composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer.

20. The assemblage of claim 19, wherein the thickness of the composite film is from 30 to 70 μ

m.