Security document and method for producing a security document
AssigneeOVD Kinegram AG
InventorsRené STAUB, Sebastian MADER, Michael HOFFMANN, Harald WALTER
Life of this patent
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Abstract
A security document (1) having a first security element (2) and having surface structure (3) which overlaps said first security element in an overlap region (41), wherein the surface structure (3) changes light which is incident on and/or radiated from the security element (2) in such a way that, in a first viewing situation, light properties (410, 420) having a defined color difference and/or brightness difference are visible in the overlap region (41) and in the comparison region (42).
Claims51
A security document having a first security element, which has a first optically variable effect, in a first region and having an exposed surface structure arranged on a first outer face of the security document,
- wherein the security document has an overlap region, in which the surface structure overlaps the first security element, and a comparison region, in which the first security element is present but the surface structure does not overlap the first security element;
- wherein,
- in a first viewing situation, a reference light property, which is a defined color and/or defined brightness, is visible in the comparison region,
- wherein the surface structure is configured such that, in the first viewing situation, the surface structure causes a change in light which is incident on the first security element and/or in light which is radiated from the first security element, such that a contrasting light property, which is a defined color and/or defined brightness and which is generated by the first optically variable effect of the first security element, is visible in the overlap region,
- wherein the contrasting light property-differs from the reference light property by a defined color difference and/or a defined brightness difference, and
- wherein the first security element comprises the following layers in the first region:
- at least one replication layer having at least one relief structure;
- at least one reflection layer, wherein the reflection layer is arranged on the at least one relief structure.
(canceled)
A method for producing a security document comprising the following steps
- providing at least one covering layer;
- providing at least one core layer;
- providing a first security element having a first optically variable effect;
- arranging the at least one core layer, the at least one covering layer and the first security element such that the first security element is arranged between the at least one covering layer and the at least one core layer;
- pressing together the at least one covering layer and the at least one core layer, wherein a surface structure is impressed into the at least one covering layer such that the surface structure is arranged, exposed, on a first outer face of the security document, and the security document has an overlap region, in which the surface structure overlaps the first security element, and a comparison region, in which the first security element is present but the surface structure does not overlap the first security element, such that, in a first viewing situation, a reference light property, which is a defined color and/or defined brightness, is visible in the comparison region, wherein the surface structure is configured such that, in the first viewing situation, the surface structure in the overlap region causes a change in light which is incident on the first security element and/or in light which is radiated from the first security element, such that a contrasting light property, which is a defined color and/or defined brightness and which is generated by the first optically variable effect of the first security element, is visible in the overlap region, wherein the contrasting light property differs from the reference light property by a defined color difference and/or a defined brightness difference,
- wherein the first security element comprises the following layers in the first region:
- at least one replication layer having at least one relief structure;
- at least one reflection layer, wherein the reflection layer is arranged on the at least one relief structure.
Dependencies are inferred from the claim text.