Thermal transfer ribbon assembly comprising a metal layer and a protective coating layer

Patent metadata

Field	Value
Publication number	US-11279144-B2
Application number	US-201916667190-A
Country	US
Kind code	B2
Filing date	Oct 29, 2019
Priority date	Oct 31, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A method for introducing a reflective and/or diffractive metallic variable and/or non-variable image to a substrate by use of thermal transfer printing includes simultaneously transferring a defined portion of each of a protective coating layer, a metal layer, and an adhesive layer from a carrier film of a transfer ribbon to the substrate by applying heat to the transfer ribbon. The defined portions of the metal layer and the protective coating layer are adhered to the substrate using the adhesive layer. Subsequent to transferring the protective coating layer, the metal layer, and the adhesive layer, durability is provided to the metal layer by cross-linking the protective coating layer that is over the metal layer by exposing the protective coating layer to a radiation source after the defined portions of the protective coating layer, the metal layer, and the adhesive layer are transferred from the carrier film.

First claim

What is claimed is:

1. A method of introducing one or more of a reflective or diffractive metallic image to a substrate by use of thermal transfer printing, the method comprising:
simultaneously transferring a defined portion of each of a protective coating layer, a metal layer, and an adhesive layer from a carrier film of a thermal transfer ribbon to the substrate while the thermal transfer ribbon moves in a direction along a surface of the substrate by selectively applying heat to the defined portions of the thermal transfer ribbon;
adhering the defined portions of the metal layer and the protective coating layer that were transferred to the substrate using the adhesive layer; and
subsequent to transferring the defined portions of the protective coating layer, the metal layer, and the adhesive layer, providing durability to the defined portion of the metal layer that is transferred to the substrate by cross-linking the defined portion of the protective coating layer that is over the defined portion of the metal layer by exposing the defined portions to a radiation source after the defined portions of the protective coating layer, the metal layer, and the adhesive layer are transferred from the carrier film.

2. The method of claim 1 , wherein the defined portions of the protective coating layer, the metal layer, and the adhesive layer are transferred to have defined edges between the defined portions and non-defined portions of the protective coating layer, the metal layer, and the adhesive layer that are not transferred.

3. The method of claim 1 , wherein the defined portions of the protective coating layer, the metal layer, and the adhesive layer that are transferred include only necessary amounts of the protective coating layer and the metal layer to form one or more of a variable or non-variable image on the substrate and no additional amount of the protective coating layer or the metal layer.

4. The method of claim 1 , wherein cross-linking the defined portion of the protective coating layer that was transferred forms an abrasion-resistant layer and/or a chemical-resistant layer over the defined portion of the metal layer that was transferred.

5. The method of claim 1 , wherein transferring the defined portion of the protective coating layer includes transferring only the defined portion of the protective coating layer that is over the portion of the metal layer that is transferred to the substrate.

6. The method of claim 1 , wherein the protective coating layer is coupled with the metal layer such that transferring the defined portion of the metal layer necessarily transfers the corresponding defined portion of the protective coating layer.

7. The method of claim 1 , wherein transferring the defined portion of the metal layer to the substrate includes forming a continuous metal shape on the substrate using the defined portion of the metal layer that is transferred.

8. A system for introducing one or more of a reflective or diffractive metallic image to a substrate by use of thermal transfer printing, the system comprising:
a thermal transfer ribbon comprising a protective coating layer, a metal layer, and an adhesive layer, wherein a defined portion of each of the protective coating layer, the metal layer, and the adhesive layer are configured to be simultaneously transferred from a carrier film of the thermal transfer ribbon to the substrate while the thermal transfer ribbon is moving in a direction along a surface of the substrate by selectively applying heat to the thermal transfer ribbon,
wherein the defined portions of the metal layer and the protective coating layer that were transferred are configured to be adhered to the substrate using the adhesive layer, and
wherein, subsequent to transferring the defined portions of the protective coating layer, the metal layer, and the adhesive layer, the defined portion of the protective coating layer is configured to be cross-linked by exposing the protective coating layer to a radiation source after the defined portions of the protective coating layer, the metal layer, and the adhesive layer are transferred from the carrier film, wherein cross-linking the defined portion of the protective coating layer provides durability to the defined portion of the metal layer that is transferred to the substrate.

9. The system of claim 8 , wherein the defined portions of the protective coating layer, the metal layer, and the adhesive layer are transferred to have defined edges between the defined portions and non-defined portions of the protective coating layer, the metal layer, and the adhesive layer that are not transferred.

10. The system of claim 8 , wherein the defined portions of the protective coating layer, the metal layer, and the adhesive layer that are transferred include only necessary amounts of the protective coating layer and the metal layer to form one or more of a variable or non-variable image on the substrate and no additional amount of the protective coating layer or the metal layer.

11. The system of claim 8 , wherein cross-linking the defined portion of the protective coating layer that was transferred forms an abrasion-resistant layer and/or a chemical-resistant layer over the defined portion of the metal layer that was transferred.

12. The system of claim 8 , wherein only the defined portion of the protective coating layer that is over the portion of the metal layer that is transferred to the substrate is configured to be transferred.

13. The system of claim 8 , wherein the protective coating layer is coupled with the metal layer such that transferring the defined portion of the metal layer necessarily transfers the corresponding defined portion of the protective coating layer.

14. The system of claim 8 , wherein the defined portion of the metal layer is configured to form a continuous metal shape on the substrate using the defined portion of the metal layer that is transferred.

15. A method comprising:
simultaneously transferring a defined portion of each of a protective coating layer, a metal layer, and an adhesive layer from a carrier film of a thermal transfer ribbon to a substrate while the thermal transfer ribbon is moving in a direction along a surface of the substrate by selectively applying heat to the thermal transfer ribbon;
adhering the defined portions of the metal layer and the protective coating layer that were transferred to the substrate using the adhesive layer; and
subsequent to transferring the defined portions of the protective coating layer, the metal layer, and the adhesive layer, providing durability to the defined portion of the metal layer that is transferred to the substrate by cross-linking the defined portion of the protective coating layer that is over the defined portion of the metal layer by exposing the defined portion of the protective coating layer to a radiation source,
wherein the defined portions of the protective coating layer, the metal layer, and the adhesive layer that are transferred include only necessary amounts of the protective coating layer and the metal layer to form one or more of a variable or non-variable image on the substrate and no additional amount of the protective coating layer or the metal layer.

16. The method of claim 1 , wherein non-defined portions of each of the protective coating layer, the metal layer, and the adhesive layer are not transferred from the carrier film to the substrate while the thermal transfer ribbon moves in the direction along the surface of the substrate.

17. The method of claim 16 , further comprising:
selectively applying heat only

Assignees

• Illinois Tool Works

Inventors

• Sangkaratana Suwit John
• Szumski Daniel

Classifications

• B44C1/1729

  Hot stamping techniques · CPC title

• B41J2202/34

  Thermal printer with pre-coating or post-processing · CPC title

• B44C1/1716

  Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff layer on a substrate unsuitable for direct deposition · CPC title

• B41M2205/30

  Thermal donors, e.g. thermal ribbons · CPC title

• B41M7/0045

  using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma · CPC title