Method for producing laser-writable data carriers and data carrier produced according to this method
AssigneeGiesecke & Devrient GmbH
InventorEckhard Braun
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing a data carrier having a laser-markable layer and a transparent optically variable layer overlapping therewith at least in certain areas, wherein visually visible markings that at least partly overlap with the optically variable layer are produced in the laser-markable layer after the application of the optically variable layer. The invention further includes a data carrier produced by the method and a semifinished product, such as a data carrier blank, that is provided for processing by the method.
Claims27
A method for producing a data carrier with an optically variable security element having at least one visually recognizable marking and at least one transparent optically variable layer, the optically variable layer including a material producing an optically variable effect, and being disposed in an overlapping relationship with the marking at least in partial areas of the marking, comprising the steps:
- applying the transparent optically variable layer to a base of the data carrier, and then producing the marking in a lasermarkable layer of the data carrier through the optically variable layer by the action of a laser beam, the optically variable layer not being altered by the laser radiation.
A data carrier comprising a transparent optically variable layer and a further layer markable through the optically variable layer by laser radiation, the markable layer having visually recognizable markings produced by laser radiation, and the optically variable layer including a material producing an optically variable effect, and being disposed on the side of the laser-markable layer facing the viewer and overlapping with the markings at least in partial areas;
- wherein the optically variable layer is formed of a material containing optically variable pigments and consists of a transparent lacquer layer.
A semifinished product for producing an individualized data carrier, said semifinished product having a layer markable by laser radiation and a transparent optically variable layer disposed on the side of the markable layer facing the viewer, wherein the markable layer and the optically variable layer overlap at least in partial areas, and visually recognizable markings are producable in the markable layer through the optically variable layer by the action of a laser beam, wherein the optically variable layer comprises a material producing an optically variable effect
- wherein the optically variable layer is formed of a material containing optically variable pigments and consists of a transparent lacquer layer.
Dependencies are inferred from the claim text.