| 摘要 |
A film (2) is applied to a limited local area of a document of value (1), and is provided with at least one security feature (4) consisting of a microstructure producing an optical diffraction effect. The surface of one of the security features (4) exhibits, at least in part, a part of a security profile (3) embossed subsequently. The security profile (3) is produced by means of a printing method which is conventional in the production of banknotes and consists firstly of relief lines and secondly of interspaces extending there between and lying approximately parallel to the surface of the document of value (1), at least some of the interspaces being masked by parts of the security feature (4). The relief lines of the security profile (3) have, at least in part, such sharp convexities that, when the security profile (3) is irradiated with light, shining effects of light reflections are dominantly visible, and when the security feature (4) is detached from the document of value (1) it is certain that, firstly, predetermined breaking points for the security feature (4) will be apparent, and secondly that the parts of the security feature (4) masking the interspaces will be so severely deformed that the deformations of the security feature (4) will be readily identifiable when the detached security feature (4) is applied to another document of value. …<IMAGE>… |
