Data carrier with machine-readable security feature, production method and authenticity check method
AssigneeGiesecke+Devrient Currency Technology GmbH
InventorsStephan STEINLEIN, Johann KECHT, Thomas GIERING, Thomas HAPP
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Abstract
A data carrier has a substrate with at least one transparent plastic layer and two opposing main surfaces. It also includes two opaque-white layers having a white, opaque appearance, which are applied to the opposing main surfaces of the substrate. Each opaque-white layer is made up of a sequence of two or more partial layers, from a lowermost white layer to a top white layer. Additionally, the data carrier features a machine-readable security element that contains a feature substance present in at least one of the partial layers of at least one opaque-white layer.
Claims18
-17. (canceled)
A data carrier comprises:
- a substrate comprising at least one transparent polymer layer and having two opposite main surfaces,
- two opaque white layers having a white opaque appearance that have been applied to the opposite main surfaces of the substrate, where each of the opaque white layers consists of a sequence of two or more sublayers ranging from a lowermost white layer to an uppermost white layer, and
- a machine-readable security feature comprising a machine-readable feature material present in at least one of the sublayers of at least one of the opaque white layers.
Dependencies are inferred from the claim text.