Identity card protected from unauthorized reproduction with a copying machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 2000
Issued Date -
N/A
app pub date -
Dec 19, 1997
filing date -
Mar 25, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to an identity card or similar data carrier having a copy protection element. The copy protection element contains a metal layer in which markings are incorporated with the aid of a laser beam by completely removing the metal layer in the area of the markings. The copy protection effect is produced by combining at least partial areas of an additional layer with the metal layer so that the marks are not electrophotographically reproducible, or not in accordance with the original, as such or in combination with the metal layer.
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Family
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Cited Art Landscape
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