Value document and embossing foil for the production thereof

Details Value document and embossing foil for the production thereof Value document and embossing foil for the production thereof

1993-02-12

1995-01-24

Han, Frances

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

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.

REFERENCES:
patent: 4376006 (1983-03-01), Nishikawa et al.
patent: 4497872 (1985-02-01), Hoppe et al.
patent: 4631222 (1986-12-01), Sander
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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