Security document

Abstract

A security document with a security element, wherein the security element includes at least partly a material that is optically changeable by an electric or magnetic field. In addition, a corresponding method for producing such a security document and a test method for testing such a security document are described.

1 . A security document ( 1 ) with a security element ( 2 ,  3 ) comprising at least partly of a material (M) that is optically changeable by an electric field (E) or magnetic field, characterized in that the security document is equipped for the purpose of testing thereof to produce an optical change of the material (M) by bringing the security document into an electric or magnetic field, without any addressing lines being applied to the document for this purpose. 
   
   
       2 . A security document according to  claim 1 , characterized in that the optically changeable material (M) includes a plurality of particles ( 8 ,  9 ) that are changeable in at least one of their position or alignment by means of an electric field (E) or magnetic field. 
   
   
       3 . A security document according to  claim 1 , characterized in that the security element ( 3 ) includes information ( 3 ) applied to the security document ( 1 ) and comprising at least partly of the optically changeable material (M). 
   
   
       4 . A security document according to  claim 1 , characterized in that the security element ( 2 ) includes a security layer ( 2 ) comprising at least partly of the optically changeable material (M). 
   
   
       5 . A security document according to  claim 4 , characterized in that the security layer has a structure. 
   
   
       6 . A security document according to  claim 3 , characterized in that at least one of the security layer ( 2 ) or the optically changeable information ( 3 ) has different colors in dependence on an electric field (E) or magnetic field from a certain viewing side. 
   
   
       7 . A security document according to  claim 3 , characterized in that at least one of the security layer ( 2 ) or the optically changeable information ( 3 ) is transparent or opaque in dependence on an electric field (E). 
   
   
       8 . A security document according to  claim 4 , characterized in that information to be protected is applied to a security layer. 
   
   
       9 . A security document according to  claim 4 , characterized in that a security layer ( 2 ) covers information ( 10 ) applied to the security document ( 1 ). 
   
   
       10 . A security document according to  claim 1 , characterized in that the material is adapted to be brought by irradiation of light into a state in which it is optically changeable by an electric field. 
   
   
       11 . A security document according to  claim 2 , characterized in that the particles of optically changeable material are embedded in a substance that produces an electric field upon irradiation of light. 
   
   
       12 . A security document according to  claim 1 , characterized by a layer that produces an electric field upon irradiation of light. 
   
   
       13 . A security document according to  claim 1 , characterized in that the optically changeable material is soluble by at least one of organic media or water. 
   
   
       14 . A test method characterized in that a security document ( 1 ) according to  claim 1 , is exposed for testing purposes to an external electric field (E) or magnetic field. 
   
   
       15 . A test method according to  claim 14 , characterized in that the electric or magnetic field is structured.