US 12,728,662 B2
Standardization of taggant signatures using transfer images
Brian John Brogger, Blaine, MN (US); Joseph Thomas Ippoliti, Woodbury, MN (US); Blake Maxwell Roeglin, Minneapolis, MN (US); and Brian Thomas Bustrom, Mounds View, MN (US)
Assigned to Microtrace, LLC, Minneapolis, MN (US)
Appl. No. 17/622,013
Filed by Microtrace, LLC, Minneapolis, MN (US)
PCT Filed Jun. 22, 2020, PCT No. PCT/US2020/038946
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2020/263744, PCT Pub. Date Dec. 30, 2020.
Claims priority of provisional application 62/866,722, filed on Jun. 26, 2019.
Prior Publication US 2022/0258521 A1, Aug. 18, 2022
Int. Cl. B42D 25/305 (2014.01); B42D 25/373 (2014.01); B42D 25/382 (2014.01); B42D 25/387 (2014.01); B42D 25/47 (2014.01)
CPC B42D 25/373 (2014.10) [B42D 25/305 (2014.10); B42D 25/382 (2014.10); B42D 25/387 (2014.10); B42D 25/47 (2014.10)] 29 Claims
OG exemplary drawing
 
1. A spectrally responsive transfer system, comprising:
a) a taggant system comprising one or more taggants, said one or more taggants exhibiting spectral characteristics in response to at least one illumination;
b) a spectral code associated with the spectral characteristics of the taggant system;
c) at least one transfer device releasably supported on a carrier, each transfer device comprising a spectrally responsive transferable body releasably supported in an upside down orientation on the carrier in a manner to allow the transferable body to be transferred from the carrier to a substrate in order to form spectrally coded indicia on the substrate, wherein the transferable body comprises:
1) at least one spectral ink layer that is releasably coupled to the carrier, wherein the at least one spectral ink layer incorporates the taggant system;
2) at least one metal foil layer provided over the at least one spectral ink layer such that the metal foil layer overlies the at least one spectral ink layer when the transferable body is releasably supported on the carrier and such that the metal foil layer underlies the at least one spectral ink layer when the transferable body is transferred from the carrier onto the substrate; and
3) an adhesive layer provided over the metal foil layer such that the adhesive layer overlies the metal foil layer when the transferable body is releasably supported on the carrier and such that the adhesive layer underlies the metal foil layer and couples the metal foil layer to the substrate when the transferable body is transferred from the carrier to the substrate, and
4) at least one base color layer provided between the at least one spectral ink layer and the at least one metal foil layer such that the at least one base color layer overlies the at least one metal foil layer after the spectrally coded transfer film is transferred from the carrier to a substrate.