Machine-readable security document and method of preparing...

Details Machine-readable security document and method of preparing... Machine-readable security document and method of preparing...

G - Physics

07

D

G07D 7/00 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) G07D 7/12 (2006.01)

Patent

CA 2348585

A security document and its method of preparation are provided wherein a security image area on the face of the document is designated. The security image area comprises a two-dimensional array of security image blocks. Security image elements and the complementary security image elements in respective security image blocks are arranged such that the security image element and the complementary security image element portions occupy respective first and second percentages of each of the security image blocks to define respective characteristic relative occupation values (CROVs) for each security image block.

L'invention concerne un document de sécurité et son procédé de préparation, dans lequel il est prévu une aire d'image de sécurité sur la face du document. L'aire d'image de sécurité comprend un réseau bidimensionnel de blocs d'images de sécurité. Les éléments d'images de sécurité et les éléments d'images de sécurité complémentaires dans les blocs d'images de sécurité respectifs sont agencés de telle façon que l'élément d'image de sécurité et les portions d'éléments d'images de sécurité complémentaires occupent respectivement les premiers et seconds pourcentages de chacun des blocs d'images de sécurité, afin de définir les valeurs caractéristiques respectives d'occupation relative (CROV) pour chaque bloc d'images de sécurité.

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