Duplex thermal dye receiver elements and imaging methods
A duplex thermal dye transfer element has a substrate, a non-voided compliant layer and a thermal dye image receiving layer. These imaging elements can be imaged on either or both sides in combination with one or more thermal dye donor elements in a thermal dye transfer process. Imaging can form a dye image or transfer clear films or laminates or metalized layers to either or both sides of the substrate.
1. A duplex thermal dye transfer receiver element comprising a substrate and on both surfaces, the following layers in the same order:
a non-voided compliant layer, and
a thermal dye image receiving layer, and
optionally a skin layer on either or both sides of the non-voided compliant layer,
wherein the extruded, non-voided compliant layer has a heat of fusion of up to and including 45 joules/g of compliant layer as determined in a temperature range of at least 25° C. and up to and including 147° C. by ASTM method D3418-08, and a tensile modulus value of at least 7×10 7 and up to and including 5×10 10 dynes/cm 2 .
2. The duplex thermal dye transfer receiver element of claim 1 wherein the non-voided compliant layer is an extruded, non-voided compliant layer, and has a heat of fusion of up to and including 30 joules/g of compliant layer and a tensile modulus value of at least 1×10 9 and up to and including 5×10 10 dynes/cm 2 .
3. The duplex thermal dye transfer receiver element of claim 1 wherein the non-voided compliant layer comprises mono- or biaxially-oriented polypropylene, poly(ethylene terephthalate), or polylactic acid) in an amount of at least 75 weight % based on total dry layer weight.
4. The duplex thermal dye transfer receiver element of claim 3 wherein the non-voided compliant layer comprises an elastomeric resin in an amount of up to and including 25 weight %, based on total dry layer weight.
5. The duplex thermal dye transfer receiver element of claim 3 further comprises an extruded layer between the substrate and the non-voided compliant layer, and an aqueous-coated layer between the non-voided compliant layer and the thermal dye image receiving layer, the aqueous-coated layer optionally including an antistatic agent.
6. The duplex thermal dye transfer receiver element of claim 1 wherein the non-voided compliant layer is an extruded non-voided compliant layer that comprises at least one elastomeric resin in an amount of at least 5 weight %, and at least one amorphous or semi-crystalline polymer in an amount of at least 2 weight %.
7. The duplex thermal dye transfer receiver element of claim 1 wherein the non-voided compliant layer is an extruded non-voided compliant layer that comprises at least 35 and up to and including 80 weight % of a matrix polymer, and comprises at least 5 and up to and including 30 weight % of the elastomeric resin and at least 2 and up to and including 25 weight % of the amorphous or semi-crystalline polymer.
8. The duplex thermal dye transfer receiver element of claim 7 wherein the elastomeric resin is a thermoplastic polyolefin blend, styrene/alkylene block copolymer, polyether block polyamide, thermoplastic copolyester elastomer, polyolefin, or thermoplastic urethane, or a mixture thereof.
9. The duplex thermal dye transfer receiver element of claim 1 further having an extruded skin layer immediately adjacent each side of the non-voided compliant layer.
10. The duplex thermal dye transfer receiver element of claim 9 wherein the extruded skin layers and non-voided compliant layer are co-extruded layers.
11. The duplex thermal dye transfer receiver element of claim 1 wherein the substrate comprises raw paper stock comprising an antistatic agent.
12. The duplex thermal dye transfer receiver element of claim 1 wherein the thermal dye image receiving layer and the non-voided compliant layers are co-extruded layers.
13. An assembly comprising the duplex thermal dye transfer receiver element of claim 1 in thermal association with a thermal dye donor element.
14. A method of forming a thermal dye image comprising imaging the duplex thermal dye transfer receiver element of claim 1 in thermal association with a thermal dye donor element.
15. The method of claim 14 wherein forming an image is carried out on both sides of the duplex thermal dye transfer receiver element using a single-head printing apparatus and as the duplex thermal dye transfer receiver element is disposed within a rotating carousel.
16. The method of claim 15 further comprising transporting the duplex thermal dye transfer receiver element using capstan rollers either before, after, or both before and after image forming.
17. The method of claim 14 wherein forming an image is carried out on both sides of the duplex thermal dye transfer receiver element using a dual-head printing apparatus wherein each head is designed to print either or opposite sides of the duplex thermal dye transfer receiver element.
18. The method of claim 17 further comprising transporting the duplex thermal dye transfer receiver element using capstan rollers either before, after, or both before and after image forming.
19. The method of claim 17 wherein the duplex thermal dye transfer receiver element is disposed within a rotating carousel.
20. The method of claim 14 further comprising transferring a clear film onto either or both sides of the duplex thermal dye transfer receiver element.
21. The method of claim 14 further comprising transferring a metal onto either or both sides of the duplex thermal dye transfer receiver element to form a metal patterned or coated layer.
22. The method of claim 21 further comprising transferring a thermal dye image over the metal patterned or coated layer.
23. The method of claim 14 wherein the duplex thermal dye transfer receiver element comprises a non-voided compliant layer that comprises mono- or biaxially-oriented polypropylene, poly(ethylene terephthalate), or poly(lactic acid) in an amount of at least 75 weight % based on total dry layer weight.
24. The method of claim 14 wherein the duplex thermal dye transfer receiver element comprises a non-voided compliant layer that is an extruded non-voided compliant layer that comprises at least 35 and up to and including 80 weight % of a matrix polymer, and comprises at least 5 and up to and including 30 weight % of the elastomeric resin and at least 2 and up to and including 25 weight % of the amorphous or semi-crystalline polymer.