Card-shaped data carrier and method for producing same

Details Card-shaped data carrier and method for producing same Card-shaped data carrier and method for producing same

2007-04-03

2007-04-03

Carter, Monica (Department: 3722)

Printed matter

Having revealable concealed information, fraud preventer or...

By removeable material

C428S064100

Reexamination Certificate

active

10069786

ABSTRACT:
The invention relates to a card-shaped data carrier consisting of at least one layer (1, 2, 3). Visually readable information in the form of a changed optical characteristic is introduced into the layer. Said characteristic is changed by irreversibly changing the material by means of a laser beam. The absorption capacity of said layer (1, 2, 3) for at least one wavelength (λ±λ) is at least partially reduced due to the laser radiation.

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