Method for producing a security document having a security feature that is dependent on the viewing angle and security document

Abstract

The invention relates to a method for producing a security document (42) having a security feature that is dependent on the viewing angle and to such a security document (42). A preferred embodiment of the method according to the invention comprises the following steps: printing print information (47) on a substrate layer (45); and integrating the imprinted substrate layer (45) in a document body (41) and introducing microlenses (51) into a surface of the document body (41), wherein the microlenses (51) are introduced after the imprinted substrate layer (45) has been integrated in the document body (41) by optically capturing the print information (47) integrated in the document body (41) and evaluating at least one feature of the captured print information (47), and on the basis of the evaluated feature, one or more tools are oriented relative to the document body (41) and subsequently the microlenses (51) are introduced into the surface with precise fit in relation to the integrated print information (47).

Description

technical field [0001] The invention relates to a method for producing a security document having viewing angle-dependent security features and a corresponding security document. The invention relates in particular to those security documents which have optical structures on their surface which, at different viewing angles of the security document, reflect different parts of the information stored in the document body, so that View the different information content below. Background technique [0002] WO 03 / 022598 A1 discloses a recording medium having a top layer with a plurality of lenticular lenses on its outer side and display elements on the back side which appear to be visible when the recording medium is tilted about at least one axis is sporty. These lenticular lenses extend only over a partial area of ​​the entire outer side. The display element is a security element printed on the inner card layer. How these lenticular lenses were incorporated into the body of ...

AI Technical Summary

Problems solved by technology

In the method known from WO 03 / 022598 A1, although the information can be printed in colour, in particular colour-variably, the achievable resolution for the viewing angle-dependent security feature is limited in that That is, the shrinkage processes that occur during the lamination process when the printed information is inserted and integrated into the document body and the exact orientation of the printed information within the document body, especially with respect to the microlenses that are simultaneously added by lamination, are only a matter of fact. insufficiently guaranteed

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