OPTICAL MARKING DEVICE

An optical marking device including at least a first layer and a second layer disposed at least partially opposite each other, at least one of the first and second layers having an optically variable element being able to change colour between a first colour and a second colour, the first and second...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MALINGE, Jérémy, PRETE, Cosimo, ALLOYEZ, Gautier
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CHEMISTRY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES LOOSE LEAVES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PERFORMING OPERATIONS POLISHES PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING
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Beschreibung
Zusammenfassung:	An optical marking device including at least a first layer and a second layer disposed at least partially opposite each other, at least one of the first and second layers having an optically variable element being able to change colour between a first colour and a second colour, the first and second colours contrasting from a colour of the other layer in such a way that when the optically variable element displays the first colour, the first layer is visible and when the optically variable element displays the second colour, the second colour is visible, or when the optically variable element displays the first colour, the second layer is visible and when the optically variable element displays the second colour, the first layer is visible.