摘要 |
The invention relates to a security device for a security document such as a bank note, an ID card or the like, comprising a translucent plastic coating which has an opaque layer with recesses shaped as characters, patterns or the like which can be detected during transmission. The security device also comprises a magnetic layer in the form of interspaced magnetic zones, which form a code, wherein the recesses which can be recognized during transmission are placed in intermediate zones of the code, which are devoid of a magnetic layer. |
申请人 |
GIESECKE & DEVRIENT GMBH, 81677 MUENCHEN, DE |
发明人 |
BOEHM, MICHAEL, 85551 KIRCHHEIM, DE;BURCHARD, THEO, DR., 83703 GMUND, DE |