Method for recording information in luminescent compositions...

B - Operations – Transporting – 41 – M

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B41M 3/00 (2006.01) B41M 3/06 (2006.01) B41M 3/14 (2006.01) C09K 11/06 (2006.01) G11B 7/0045 (2006.01) G11B 7/24 (2006.01)

Patent

CA 2523097

Described herein is a method for recording information in luminescent compounds, comprising: a) providing a luminescent composition which comprises at least a first and second luminescent compound, wherein the first luminescent compound is a donor compound having a peak luminescent emission spectrum at a given wavelength, wherein the second luminescent compound is an acceptor compound having a peak absorption spectrum at a longer wavelength than the given wavelength, and wherein the emission spectrum of the donor compound at least partially overlaps the absorption spectrum of the acceptor compound; b) combining the composition with a substrate, so that at least a portion of the composition is available for exposure to a photon source; and c) embedding information at predetermined sites in the combined composition by localized exposure to a photon source, the embedding resulting in an information pattern when exposed to a luminescence deciphering device, and uses of said information pattern.

L'invention concerne un procédé d'enregistrement d'informations dans des composés luminescents, consistant a) à fournir une composition luminescente qui contient au moins un premier et un second composé luminescent, le premier composé luminescent étant un composé donneur présentant un spectre d'émission luminescente de pic à une longueur d'ondes donnée, le second composé luminescent étant un composé accepteur présentant un spectre d'absorption de pic à une longueur d'ondes plus longue que la longueur d'ondes donnée, le spectre d'émission du composé donneur chevauchant en partie le spectre d'absorption du composé accepteur ; b) à combiner la composition avec un substrat de manière qu'au moins une partie de la composition puisse être exposée à une source optique ; et c) à imbriquer des informations dans des sites prédéterminés de la composition combinée par exposition localisée à une source optique, cette imbrication aboutissant à un motif d'informations lors de l'exposition à un dispositif de déchiffrage luminescent. L'invention porte aussi sur des utilisations de ce motif d'informations.

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