Value document and embossing foil for the production thereof
First Claim
1. A value document comprising a surface carrying a security element including a magnetic layer comprising a dispersion of magnetizable particles in a binder and a security layer including an optical diffraction effect, said security layer overlying said magnetic layer in a region-wise manner with a surface of said security layer towards said magnetic layer having a spacial structure with an optical diffraction effect;
- a reflective non-magnetizable metal layer on said surface of said security layer; and
a barrier layer between said metal layer and said magnetic layer, said barrier layer preventing said particles of said magnetic layer from reacting with said metal layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A value document and an embossing foil for the production thereof comprise a security feature in the form of a combination of a magnetic layer and a security layer which has an optical-diffraction effect. The security layer structure that has the optical-diffraction effect is provided with a reflective metal layer. To prevent damage to the reflective metal layer by particles of the magnetic layer, the metal layer is made of suitably resistant metal and/or a barrier layer is provided between the metal layer and the magnetic layer.
155 Citations
21 Claims
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1. A value document comprising a surface carrying a security element including a magnetic layer comprising a dispersion of magnetizable particles in a binder and a security layer including an optical diffraction effect, said security layer overlying said magnetic layer in a region-wise manner with a surface of said security layer towards said magnetic layer having a spacial structure with an optical diffraction effect;
- a reflective non-magnetizable metal layer on said surface of said security layer; and
a barrier layer between said metal layer and said magnetic layer, said barrier layer preventing said particles of said magnetic layer from reacting with said metal layer. - View Dependent Claims (2, 3, 4, 5)
- a reflective non-magnetizable metal layer on said surface of said security layer; and
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6. A value document comprising a surface carrying a security element including a magnetic layer comprising a dispersion of magnetizable particles in a binder and a security layer having an optical diffraction effect, said security layer overlying said magnetic layer in a region-wise manner said surface of said security layer towards said magnetic layer having a spacial structure with an optical diffraction effect;
- a reflective non-magnetizable metal layer on said surface of said security layer, said metal layer comprising a metal unreactive with said particles of said magnetic layer; and
a barrier layer between said metal layer and said magnetic layer, said barrier layer restricting said particles of said magnetic layer from having an action on said metal layer. - View Dependent Claims (7, 8, 9, 10, 11)
- a reflective non-magnetizable metal layer on said surface of said security layer, said metal layer comprising a metal unreactive with said particles of said magnetic layer; and
- 12. An embossing foil for the production of a value document comprising a backing film and a transfer layer which is releasable therefrom and which, starting from the backing film, comprises at least one transparent lacquer layer as a security layer, which lacquer layer has an optical-diffraction effect and at its surface remote from the backing film has a spatial structure with an optical-diffraction effect, a reflective metal layer over the spatial structure of the security layer, a magnetic layer comprising a dispersion of magnetisable particles in a binder, and an adhesive means for fixing to a substrate, wherein a barrier layer is disposed between the metal layer and the magnetic layer for preventing the particles of the magnetic layer from having an action on the metal layer.
- 18. An embossing foil for the production of a value document comprising a backing film and a transfer layer which is releasable therefrom and which, starting from the backing film, comprises at least one transparent lacquer layer as a security layer, which lacquer layer has an optical-diffraction effect and at its surface remote from the backing film has a spatial structure with an optical-diffraction effect, a reflective metal layer over the spatial structure of the security layer, a magnetic layer comprising a dispersion of magnetisable particles in a binder, and an adhesive means for fixing to a substrate, wherein the metal layer comprises a metal which is at least substantially unreactive with the particles of the magnetic layer and wherein a barrier layer is arranged between the metal layer and the magnetic layer for at least restricting the action of the particles of the magnetic layer on the metal layer.
Specification