SECURITY DOCUMENT INCORPORATING A TRANSPARENT INFRARED ABSORBING MATERIAL

A security document including a transparent window, wherein an infrared absorbing material is applied to or incorporated within the window. The infrared absorbing material includes at least one infrared absorbing dye supported on nanoparticles having an average size not greater than 100nm. The dye-s...

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Bibliographic Details
Main Authors HARRIS, Dominic Richard, CASEY, Philip Stephen, SUBRAMANIAN, Priya, JACKSON, Wayne Kevin, BATEMAN, Stuart Arthur
Format Patent
LanguageEnglish
French
German
Published 14.10.2020
Subjects
BOOK COVERS
BOOKBINDING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
LOOSE LEAVES
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
SPECIAL PRINTED MATTER
TRANSPORTING
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Summary:A security document including a transparent window, wherein an infrared absorbing material is applied to or incorporated within the window. The infrared absorbing material includes at least one infrared absorbing dye supported on nanoparticles having an average size not greater than 100nm. The dye-supporting nanoparticles may be dispersed in a carrier vehicle such that the infrared absorbing material is substantially transparent to visible radiation.
Bibliography:Application Number: EP20160171434