METHODE DE FABRICATION D'UN SUPPORT DE DONNEES MULTICOUCHE COMPORTANT UNE MARQUE DE SECURITE POUVANT ETRE CREEE AU LASER

The invention relates to a method for manufacturing a multi-layer data medium by hot rolling under pressure, able to be marked under the effect of laser radiation applied to at least one outer surface (11) of this medium, in which at least one marking (13) with optically variable effect is disposed...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PHILIPPE, ERIC, BES, LAURENCE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BOOK COVERS BOOKBINDING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LOOSE LEAVES MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SOLDERING OR UNSOLDERING SPECIAL PRINTED MATTER TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a method for manufacturing a multi-layer data medium by hot rolling under pressure, able to be marked under the effect of laser radiation applied to at least one outer surface (11) of this medium, in which at least one marking (13) with optically variable effect is disposed with respect to a laser marking sub-layer so that said outer surface (11) has a portion with optically variable effect optically superimposed on at least one part of the laser marking sub-layer and a portion (16) without marking with optically variable effect optically superimposed on at least one part of the laser marking sub-layer. These portions are produced with contents of at least one marking agent which is sensitive to said laser radiation which are different. The invention relates to a method for manufacturing a multi-layer data mediurn by hot rolling under pressure, able to be marked under the effect of laser radiation applied to at least one outer surface (11) of this medium, in which at least one marking (13) with optically variable effect is disposed with respect to a laser marking sub-layer so that said outer surface (11) has a portion with optically variable effect optically superimposed on at least one part of the laser marking sub-layer and a portion (16) without rnarking with optically variable effect optically superimposed on at least one part of the laser rnarking sub-layer. These portions are produced with contents of at least one marking agent which is sensitive to said laser radiation which are different.