Security documents with visible and invisible markings

A difficult-to-counterfeit document comprising, together with data printed in visible form, invisible indicia that are personalized in nature, and which cannot be seen without the cooperation of an external factor. The invisible indicia are printed with a luminescent ink or toner, and becomes visibl...

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Bibliographic Details
Main Authors LANDMAN AVI, DUKLER SHLOMO
Format Patent
LanguageEnglish
Published 20.02.2003
Edition7
Subjects
BOOK COVERS
BOOKBINDING
COLOUR PRINTING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
LINING MACHINES
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
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
SPECIAL PRINTED MATTER
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:A difficult-to-counterfeit document comprising, together with data printed in visible form, invisible indicia that are personalized in nature, and which cannot be seen without the cooperation of an external factor. The invisible indicia are printed with a luminescent ink or toner, and becomes visible by the application of irradiaton, such as UV light. The luminescent ink or toner may comprise fluorescent materials. The same type of document may bear different invisible indicia for different bearers or documents, and may be printed by conventional digital printing methods.
Bibliography:Application Number: US20010027214