Identification card having a hologram superimposed on printed da

Details Identification card having a hologram superimposed on printed da Identification card having a hologram superimposed on printed da

1976-01-05

1977-03-29

Stern, Ronald J.

Printed matter

Maps

40 22, 283 7, G03H 104, B44F 112

Patent

active

040146022

ABSTRACT:
A falsification-proof identity card comprises a first transparent layer on the underneath side of which conventional data is applied by printing technology. The card contains a holographic safeguard and additional safety measures such as metal structures, fluorescent structures, safety imprints and the like which are only visible in response to holographic reconstruction and/or other light applications, such as ultra-violet light. The holographic safeguard comprises a second transparent or non-transparent layer which carries on the entire surface which faces the first layer a phase hologram or an amplitude hologram which can be read out by light transmission or by light reflection, depending on the transparency of the layer, and which contains at least the visible data printed on the first layer in a direct recording.

REFERENCES:
patent: 3643216 (1972-02-01), Greenaway et al.
patent: 3647275 (1972-03-01), Ward
patent: 3668795 (1972-06-01), Barker
patent: 3807859 (1974-04-01), Sugaya et al.

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