Anti-couterfeit printed matter

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 3/14 (2006.01) B42D 15/10 (2006.01) G07D 7/00 (2006.01)

Patent

CA 2738992

This invention relates to an anti-counterfeit printed matter, including securities such as banknotes, stock certificates, and bonds, various kinds of certificates, and important documents, which requires anti-counterfeit or anti-copy. [Solving Means] A visible image is formed by a first object group arrayed in a first direction at a predetermined pitch and a second object group arranged in the non-imaging area of the first object group. The second object group forms the negative and positive images of a first invisible image by arbitrarily arranging two kinds of objects in pairs in the on/off relationship. Addition, in the anti-counterfeit printed matter, the first object group includes object portions that are formed in at least two height levels from the surface of the printed matter so as to have a predetermined difference in height, thereby forming a second invisible image.

La présente invention se rapporte à un imprimé empêchant la contrefaçon nécessaire pour empêcher la contrefaçon ou la copie de billets de banque, de titres tels que des valeurs et des obligations, de divers certificats, dimportants documents, et analogues. Un premier groupe de lignes dimage est placé à un pas prédéfini dans une première direction. Une image visible est formée dans une partie de lignes de non-image des premières lignes dimage par un second groupe de lignes dimage. Les secondes lignes dimage agencent de façon arbitraire une paire de deux types de lignes dimage selon une relation on et off, ce qui permet de former des images négatives et positives dune première image invisible. En outre, une partie de lignes dimage, qui a une différence de hauteur prédéfinie dau moins deux pas, ou plus, à partir de la surface dimpression de limprimé, compose le premier groupe de lignes dimage, ce qui permet de composer une seconde image invisible. Ainsi, un imprimé de protection contre la contrefaçon est créé.

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