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US 2024/0140125 A1Published application
Method for producing a security element comprising micro-imaging elements
AssigneeGiesecke+Devrient Currency Technology GmbH
InventorManfred HEIM
Life of this patent
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Abstract
A method for producing a security element for security papers, valuable documents or the like, includes a carrier having on its top side micro-imaging elements and on its underside structures which, together with the microimaging elements, image a motif in front of the top side of the carrier; the position of the motif being is dependent on the viewing angle.
Claims8
-7. (canceled)
A method for producing a security element for security papers, valuable documents, or the like, wherein
- a translucent or transparent carrier is provided, which includes an upper side and a lower side,
- a first embossing layer is applied to the upper side of the carrier,
- multiple micro-imaging elements are introduced into the side of the first embossing layer facing away from the carrier,
- a second embossing layer is applied to the lower side of the carrier,
- multiple embossing structures are introduced into the side of the second embossing layer facing away from the carrier, wherein the second embossing layer is at least nearly flat between the respective embossing structures,
- wherein the embossing structures together with the micro-imaging elements depict a motif in front of the upper side of the carrier, wherein the orientation of the motif is dependent on the viewing angle,
- a metallic layer is applied to the full surface on the side of the second embossing layer facing away from the carrier,
- wherein the metallic layer is removed from the embossing structures using an etching method and remains in areas in which the second embossing layer is at least nearly flat between the respective embossing structures.
5 more elements
Dependencies are inferred from the claim text.