SECURITY ELEMENT FOR A SECURITY DOCUMENT AND PROCESS FOR THE PRODUCTION THEREOF
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Feb 7, 2008
filing date -
Feb 7, 2007
priority date (Note) -
Abandoned
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Abstract
The invention concerns a security element for a security document comprising a structure layer and diffractive first and second relief structures, wherein the relief structures viewed parallel to the plane of the structure layer are arranged in different planes of the security element, wherein the first relief structure adjoins a partial first reflection layer and the second relief structure adjoins a partial second reflection layer, and wherein—if the first reflection layer is towards a viewer—a second item of information generated by the second relief structure is at least partially concealed and—if the second reflection layer is towards the viewer—a first item of information generated by the first relief structure is at least partially concealed, and processes for the production of such security elements and security documents formed therewith.
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