Security device and security support comprising same

1. A security device comprising a security element comprising:

a substrate provided with at least one optically variable effects generating structure situated in a defined area of the substrate, the optically variable effects generating structure being a holographic structure or a diffraction grating;

a first reflective layer visible at least where the first reflective layer coincides with the at least one optically variable effects generating structure, the first reflective layer comprising a reflection enhancing material being a metal or an alloy; and

at least one second distinctive reflective layer located directly on the substrate where the at least one optically variable effects generating structure is not present and visible only through regions of the substrate where the at least one optically variable effects generating structure is not present, the at least one second reflective layer comprising a reflective material different from that of the first reflective layer chosen from a metal, an alloy, and a metallic ink;

wherein the first and second reflective layers have different colors from each other to generate an optical effect.

2. The security device of claim 1 , wherein the at least one optically variable effects generating structure is a surface relief structure.

3. The security device of claim 1 , wherein the first reflective layer covers only partially the at least one optically variable effects generating structure.

4. The security device of claim 1 , wherein the at least one second reflective layer is visible around the defined area of the at least one optically variable effects generating structure.

5. The security device of claim 1 , wherein the substrate is provided with several optically variable effects generating structures situated in respective defined areas of the carrier substrate and the at least one second reflective layer is visible only through regions of the substrate between the defined areas of the optically variable effects generating structures.

6. The security device of claim 1 , wherein the at least one second reflective layer is situated such that the at least one second reflective layer is not coincident with the said at least one optically variable effects generating structure.

7. The security device of claim 1 , wherein at least one of the first and second reflective layers comprises at least one of recesses and deposits defining patterns.

8. The security device of claim 1 , wherein the reflection enhancing material of the first reflective layer is chosen from Al, Cu, Fe, Ag, Au, Cr, Ni, Zn, Cd, Bi, Cu—Al alloys, Cu—Zn alloys, iron alloys, and steel.

9. The security device of claim 1 , wherein the first and the second reflective layers are laid down one on the other in some areas and separated by at least one intermediate layer in these areas.

10. The security device of claim 9 , wherein the at least one intermediate layer comprises a dielectric material.

11. The security device of claim 1 , wherein the security element further comprises at least one of positive and negative patterns.

12. The security device of claim 1 , wherein the security element comprises partial or continuous layers with at least one of electrical and magnetic properties.

13. The security device of claim 1 , wherein the security element is provided with a protective varnish layer on at least one of its sides.

14. The security device of claim 13 , wherein the protective varnish layer is pigmented.

15. The security device of claim 1 , wherein the security element is laminated to at least one carrier substrate which has at least one of a functional layer and a decorative layer.

16. The security device of claim 1 , wherein the security device comprises a laminating adhesive.

17. The security device of claim 16 , wherein the laminating adhesive is chosen from a hot-melt adhesive, a cold-seal adhesive, and a self-adhesive.

18. The security device of claim 16 , wherein the laminating adhesive is present at least partially in the area or in a structured manner of the security element.

19. A security document or article comprising the at least one security device according to claim 1 .

20. The security document or article of claim 19 , wherein the security device comprises a thread which is at least partially embedded in the security document or article, the visible parts of the first and second layers appearing in at least one window.

21. The security document or article of claim 19 , wherein the security device comprises a patch or a stripe applied at least partially to at least one surface of the security document or article.

22. The security document or article of claim 19 , wherein the security document or article is made of fibrous material.

23. The security document or article of claim 19 , wherein the security document or article is made substantially from one of a plastic film, a composite of plastic films, or a composite of at least one fibrous material and a plastic film.

24. The security document or article of claim 19 , wherein the security document or article is chosen from identity cards, visas, passports, banknotes, authentication brand labels, tamper evidence labels, seals, and packaging materials.

25. The security device of claim 16 , wherein the laminating adhesive comprises a pigmented adhesive.

26. The security document or article of claim 22 , wherein the fibrous material is chosen from at least one of cellulose, cotton, and synthetic fibers.

27. The security document or article of claim 24 , wherein the security document or article is chosen from packaging materials comprising packaging materials for at least one of pharmaceuticals, electronics, foodstuff, cosmetics, and data carriers.

28. The security device of claim 1 , wherein the reflective material of the second reflective layer is chosen from Al, Cu, Fe, Ag, Au, Cr, Ni, Zn, Cd, Bi, Cu—Al alloys, Cu—Zn alloys, iron alloys, and steel.

29. A security device comprising a security element comprising:

a substrate provided with at least one optically variable effects generating structure situated in a defined area of the substrate, the optically variable effects generating structure being a holographic structure or a diffraction grating;

a first reflective layer visible at least where the first reflective layer coincides with the at least one optically variable effects generating structure, the first reflective layer comprising a reflection enhancing material that is a metal or an alloy; and

at least one second distinctive reflective layer located directly on the substrate where the at least one optically variable effects generating structure is not present and visible only through regions of the substrate where the at least one optically variable effects generating structure is not present, wherein the at least one second reflective layer comprises a reflective material different from that of the first reflective layer, and wherein the at least one second reflective layer is a metallic ink.

30. A security device comprising a security element comprising:

a substrate provided with at least one optically variable effects generating structure situated in a defined area of the substrate,

a first reflective layer visible at least where the first reflective layer coincides with the at least one optically variable effects generating structure, the first reflective layer comprising a reflection enhancing material that is a metal or an alloy, and

at least one second distinctive reflective layer located directly on the substrate where the at least one optically variable effects generating structure is not present and visible only through regions of the substrate where the at least one optically variable effects generating structure is not present, the at least one second reflective layer comprising a reflective material different from that of the first reflective layer, the reflective material of the at least one second reflective layer being a metal or an alloy;

wherein the first and second reflective layers have different colors to generate an optical effect, the first and second reflective layers being produced by physical vapor deposition (PVD) or chemical vapor deposition (CVD).