Value document and embossing foil for the production thereof

Printed matter – Having revealable concealed information – fraud preventer or... – Utilizing electromagnetic radiation

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Details

283107, 283904, 428172, 428201, 428207, 428209, 428692, 428915, 428916, 428913, B42D 1510, B32B 300

Patent

active

053836871

ABSTRACT:
A value document and an embossing foil for the production thereof comprise a security feature in the form of a combination of a magnetic layer and a security layer which has an optical-diffraction effect. The security layer structure that has the optical-diffraction effect is provided with a reflective metal layer. To prevent damage to the reflective metal layer by particles of the magnetic layer, the metal layer is made of suitably resistant metal and/or a barrier layer is provided between the metal layer and the magnetic layer.

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patent: 4684795 (1987-08-01), Colgate, Jr.
patent: 4728377 (1988-03-01), Gallagher
patent: 4856857 (1989-08-01), Takeuchi et al.
patent: 4971646 (1990-11-01), Schnell et al.
patent: 5267755 (1993-12-01), Yamauchi et al.

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