Authentication of security documents by means of photochromic dyes
The value document substrate has a photochromic security feature and two foil layers, particularly cover layers (3,4), where one of the cover layers is transparent or translucent. The photochromic security feature is enclosed between the both cover layers. The both cover layers are provided to cover...
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| creator | LIEBLER, RALF |
| description | The value document substrate has a photochromic security feature and two foil layers, particularly cover layers (3,4), where one of the cover layers is transparent or translucent. The photochromic security feature is enclosed between the both cover layers. The both cover layers are provided to cover two surfaces of a core layer (5) respectively. A photochromic dye is provided as a retinal-based dye, particularly a rhodopsin. The rhodopsin has bacteriorhodopsin or proteorhodopsin. An independent claim is also included for a value document, particularly banknote, which is selected from a group comprises hybrid banknote, a polymer-banknote, a foil patch, a security thread, a label and a transfer element. |
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The photochromic security feature is enclosed between the both cover layers. The both cover layers are provided to cover two surfaces of a core layer (5) respectively. A photochromic dye is provided as a retinal-based dye, particularly a rhodopsin. The rhodopsin has bacteriorhodopsin or proteorhodopsin. 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The photochromic security feature is enclosed between the both cover layers. The both cover layers are provided to cover two surfaces of a core layer (5) respectively. A photochromic dye is provided as a retinal-based dye, particularly a rhodopsin. The rhodopsin has bacteriorhodopsin or proteorhodopsin. 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The photochromic security feature is enclosed between the both cover layers. The both cover layers are provided to cover two surfaces of a core layer (5) respectively. A photochromic dye is provided as a retinal-based dye, particularly a rhodopsin. The rhodopsin has bacteriorhodopsin or proteorhodopsin. An independent claim is also included for a value document, particularly banknote, which is selected from a group comprises hybrid banknote, a polymer-banknote, a foil patch, a security thread, a label and a transfer element.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | ADVERTISING AUXILIARY PROCESSES IN PHOTOGRAPHY BOOK COVERS BOOKBINDING CINEMATOGRAPHY CRYPTOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING EDUCATION ELECTROGRAPHY FILES HOLOGRAPHY LABELS OR NAME-PLATES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SEALS SIGNS SPECIAL PRINTED MATTER TRANSPORTING |
| title | Authentication of security documents by means of photochromic dyes |
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