Patent ID: 8308197
Filing Date: 2012-11-13
Classification: B42D

Abstract:
1. A security element for increasing the forgery-proof nature of a security document, wherein the security element has a first region comprising a background region and an arrangement of a plurality of microregions separated by the background region, and wherein the background region has a diffractive surface relief shaped at least region-wise in a layer of the security element, the diffractive surface relief being provided at least region-wise with a reflection layer, and wherein the first region shows an open item of information against a surrounding region, the open item of information being visible with a naked eye and, wherein the arrangement of the plurality of microregions form a concealed code which is not visible with the naked eye and which can be read out optically and which is machine-readable, the arrangement of microregions differing optically from the surrounding region and having a surface relief differing from the surrounding region shaped therein and/or having the reflection layer removed therefrom and/or having the machine-readable code generated by a surface relief shaped therein.