PRINTING INK, ITS USE FOR THE AUTHENTICATION OF ARTICLES, ARTICLES OBTAINED THEREBY AND AUTHENTICATION METHODS

A printing ink having a first fluorescent dye acting as donor and a second fluorescent dye acting as acceptor. The first fluorescent dye, upon excitation by electromagnetic radiation falling within an excitation wavelength range λ1a of the first fluorescent dye, is capable of emitting electromagneti...

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Bibliographische Detailangaben
Hauptverfasser:	ZAHAR, Amine, CARTESIO, Salvatore, SEMPERE, Pablo, DORIER, Jean-Luc
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CHECKING-DEVICES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES FILLING PASTES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING INKS LOOSE LEAVES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	A printing ink having a first fluorescent dye acting as donor and a second fluorescent dye acting as acceptor. The first fluorescent dye, upon excitation by electromagnetic radiation falling within an excitation wavelength range λ1a of the first fluorescent dye, is capable of emitting electromagnetic radiation in at least one first emission wavelength range λ1e, said first emission wavelength range λ1e of the first fluorescent dye overlapping with at least one excitation wavelength range λ2a of the second fluorescent dye, to thereby excite the second fluorescent dye to emit electromagnetic radiation in a second emission wavelength range λ2e.