SECURITY DEVICE FOR SECURITY DOCUMENT
A security device for verifying an authenticity of a security doc-ument comprises an at least partially transparent multilayer substrate with a first surface and a second surface. A first pattern is arranged on the first surface. This first pattern is derivable using a first seed pattern. A second p...
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| creator | CHOSSON, Sylvain |
| description | A security device for verifying an authenticity of a security doc-ument comprises an at least partially transparent multilayer substrate with a first surface and a second surface. A first pattern is arranged on the first surface. This first pattern is derivable using a first seed pattern. A second pattern is arranged on the second surface. This second pattern is derivable using a second seed pattern. The security device furthermore comprises a third pattern arranged between a first and a second substrate layer. The third pattern is derivable using an inversion of the first pattern, an inversion of the second pattern, and a non-inverted third seed pattern. Transmit lances and reflectivities of the patterns are selected such that in a reflection viewing mode, only the first or second seed pattern is visible, respectively. In a transmission viewing mode, only the third seed pattern is visible. |
| format | Patent |
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This first pattern is derivable using a first seed pattern. A second pattern is arranged on the second surface. This second pattern is derivable using a second seed pattern. The security device furthermore comprises a third pattern arranged between a first and a second substrate layer. The third pattern is derivable using an inversion of the first pattern, an inversion of the second pattern, and a non-inverted third seed pattern. Transmit lances and reflectivities of the patterns are selected such that in a reflection viewing mode, only the first or second seed pattern is visible, respectively. In a transmission viewing mode, only the third seed pattern is visible.</description><language>eng ; fre ; ger</language><subject>BOOK COVERS ; BOOKBINDING ; CHECKING-DEVICES ; DECORATIVE ARTS ; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ; FILES ; HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING ; LOOSE LEAVES ; MOVABLE-STRIP WRITING OR READING APPARATUS ; PERFORMING OPERATIONS ; PHYSICS ; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES ; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR ; SPECIAL DESIGNS OR PICTURES ; SPECIAL PRINTED MATTER ; TRANSPORTING</subject><creationdate>2017</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170301&DB=EPODOC&CC=EP&NR=3134273A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170301&DB=EPODOC&CC=EP&NR=3134273A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CHOSSON, Sylvain</creatorcontrib><title>SECURITY DEVICE FOR SECURITY DOCUMENT</title><description>A security device for verifying an authenticity of a security doc-ument comprises an at least partially transparent multilayer substrate with a first surface and a second surface. 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A first pattern is arranged on the first surface. This first pattern is derivable using a first seed pattern. A second pattern is arranged on the second surface. This second pattern is derivable using a second seed pattern. The security device furthermore comprises a third pattern arranged between a first and a second substrate layer. The third pattern is derivable using an inversion of the first pattern, an inversion of the second pattern, and a non-inverted third seed pattern. Transmit lances and reflectivities of the patterns are selected such that in a reflection viewing mode, only the first or second seed pattern is visible, respectively. In a transmission viewing mode, only the third seed pattern is visible.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BOOK COVERS BOOKBINDING CHECKING-DEVICES DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL DESIGNS OR PICTURES SPECIAL PRINTED MATTER TRANSPORTING |
| title | SECURITY DEVICE FOR SECURITY DOCUMENT |
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