Security device and security support comprising same

摘要

The invention relates to a security device comprising a security element composed of:
a carrier substrate (1) provided with at least one optically variable effects generating structure (2) situated in defined areas of the said carrier,a first reflective layer (3) visible at least where it coincides with the said optically variable effects generating structures (2) and comprising a reflection enhancing material,at least one second distinctive reflective layer (4) situated only outside the optically variable effects generating structures (2) and comprising a reflective material different from that of the first layer (3).;These layers (3,4) can comprise further patterns (7).;The invention relates to a security support (9) or document comprising the said security device too.

主权项

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.