Tamper-proof, color-shift security feature

The invention relates to a tamper-proof security feature that comprises at least one electromagnetic wave-reflecting layer ( 2 ), one polymer spacer layer ( 3 ) and one metal cluster layer ( 4 ). The inventive feature is characterized in that one or more of the layers, in addition to their function,...

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Bibliographische Detailangaben
1. Verfasser:	BERGSMANN MARTIN
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BOOK COVERS BOOKBINDING CINEMATOGRAPHY DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTROGRAPHY ELECTROPHOTOGRAPHY FILES HOLOGRAPHY LOOSE LEAVES MAGNETOGRAPHY MOSAICS MOVABLE-STRIP WRITING OR READING APPARATUS PAPERHANGING PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PRODUCING DECORATIVE EFFECTS SPECIAL PRINTED MATTER SPRAYING OR ATOMISING IN GENERAL TARSIA WORK TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a tamper-proof security feature that comprises at least one electromagnetic wave-reflecting layer ( 2 ), one polymer spacer layer ( 3 ) and one metal cluster layer ( 4 ). The inventive feature is characterized in that one or more of the layers, in addition to their function, fulfill additional security functions in their color-shift set-up.