Documents having fibers which are coated with a magnetic or magn

Registers – Records – Magnetic

Patent

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Details

235431, 235440, G06K 1906, G06F 702, G06K 700

Patent

active

041140320

ABSTRACT:
A method of manufacturing documents such as paper money, credit cards, identification cards and the like in a manner so as to prevent forgeries thereof, comprises the steps of producing a base material, coating fibers with a magnetic or magnetizable material, and embedding the fibers into the base material during the production of the base material; an apparatus for checking the authenticity of documents such as paper money, credit cards, identification cards, and the like comprises in combination a document having fibers which are coated with a magnetic or magnetizable material embedded therein, detecting means for scanning the document to determine the number of magnetic particles present in the document, and means for moving the document and the detecting means relative to each other so as to provide a scanning trace, the document and the detecting means being disposed in a close relationship to each other.

REFERENCES:
patent: 3419710 (1968-12-01), Mathews, Jr. et al.
patent: 3581064 (1971-05-01), Palmer
patent: 3612834 (1971-10-01), Arikawa et al.
patent: 3634656 (1972-01-01), Krechmer et al.
patent: 3636318 (1972-01-01), Lindstrom et al.
patent: 3768094 (1973-10-01), Henrich

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