Counterfeit detection system

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 3/14 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01) G07D 7/12 (2006.01) G07F 7/08 (2006.01) B41M 1/04 (2006.01)

Patent

CA 2393657

A method for associating source information with a substrate includes providing at least two latent marking agent that emits a signal at different emission wavelength, wherein the signal is at least a potion of the source information; and raffixing at least two latent marking agents to the substrate. At least one latent marking agent includes an inorganic pigment. In some embodiments of the method, the latent marking agent must be exposed to ultraviolet radiation before it can emit a signal in response to infrared irradiation.

L'invention concerne un procédé permettant d'associer une information source avec un substrat, qui consiste à fournir au moins deux agents de marquage <= latents >= qui émettent un signal jà des longueurs d'onde différentes en réponse à leur irradiation par un rayonnement infrarouge à une longueur d'onde d'excitation, le signal étant au moins une partie de l'information source, et à fixer les deux agents de marquage latents au substrat. Un agent au moins comprend un pigment inorganique. Dans certaines modes de réalisation, l'agent de marquage latent doit être exposé à un rayonnement ultraviolet avant de pouvoir émettre un signal en réponse au rayonnement infrarouge.

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