| 20120018513 | SECURITY ELEMENT COMPRISING MAGNETIC AREAS OF DIFFERENT COERCIVITIES, A METHOD FOR ITS PRODUCTION AND A METHOD FOR READING INFORMATION ENCODED IN THE ELEMENT - A security element, particularly for banknotes, security cards and the like, comprising a first substrate which is at least partially opaque when viewed in transmitted light, and a plurality of magnetic areas being arranged on the substrate, wherein each of the magnetic areas is formed by a first magnetic material, a second magnetic material or an arrangement of the first and the second magnetic materials being at least partially superimposed, the first magnetic material and the second magnetic material exhibiting different coercivity values which are detectable by a sensor, wherein the first and second magnetic materials are magnetically saturated such that one of the first and second magnetic materials is not affected by the other. | 01-26-2012 |
