Security document having a perforation window, and method for the production thereof

Abstract

The invention relates to a method for producing a security document, a method for verifying a security document, and a security document, which comprises: a document body (2) having a front side (11) and an opposite back side (12), wherein the document body (2) is produced using at least one planar, self-supporting opaque layer (5), which is integrated into the document body (2) between the front side (11) and the back side (12), and wherein at least one optically verifiable security feature (13, 14, 15) is formed in the document body (2), which security feature has different optical effects with regard to an observation through the front side (11) and an observation through the back side (12), wherein a plurality of through-holes (30) are formed in the opaque layer (5) and arranged in such a way that the at least one optically verifiable security feature (13, 14, 15) can be optically detected both in an observation through the front side (11) and in an observation through the back side (12), wherein one of the two observations is a through-view observation (35, 36) that occurs through the through-holes in the opaque layer, and the other is a direct observation (25, 26) that does not occur through the through-holes, and the at least one optically verifiable security feature (13, 14, 15) is designed in such a way that different optical effects can be detected in the direct observation (25, 26) and in the through-view observation (35, 36), the difference of said optical effects not being caused by the presence of the opaque layer (5) and/or the through-holes (30).

Description

technical field [0001] The invention relates to a security document and a method for its manufacture, in particular to a security document having at least one security feature which is optically verifiable and which has different optical effects depending on the viewing side of the security document. Background technique [0002] Various security documents are known from the prior art. All objects comprising at least one security feature which makes forgery, imitation, unauthorized copying etc. difficult or preferably impossible are referred to as the security document. [0003] Security documents include, for example, ID documents (Identification: identification), travel passports, personal certificates, ID cards, driver's licenses, driving licenses, vehicle factory licenses, access cards, company certificates, access cards (Zutrittskarten), bank cards, credit cards, Visa also includes anti-counterfeit tags, access cards, banknotes, stamps, securities, and the like. Such ...

AI Technical Summary

Problems solved by technology

Also, the later addition of information through re-laser radiation could be used to falsify security documents

Usually cannot achieve full color or colorful information storage

In the method known from WO 03 / 022598 A1, although the information can be printed in color, in particular in multicolor, the sufficient resolution for the security feature depending on the viewing angle is limited by the fact that when adding and integrating the printed information into the document The shrinkage process occurring in the lamination process and the exact orientation of the printed information in the document body and in particular with respect to the microlenses introduced simultaneously in the lamination process is not sufficient to ensure

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