Patent · US Active

Data carrier having identifiers

US8409693B2 · kind B2 · utility

1Cited by

3References

13Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Günter Endres · Birkenfeld, DE
Georg Kruse · Gifhorn, DE
Josef Riedl · Attenkirchen, DE

Key dates

Filing date	Jul 27, 2010
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Aug 25, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24917
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to a data carrier into which, by means of a laser beam, identifiers are introduced that are visible in the form of irreversible changes, caused by the laser beam, in the optical properties of the data carrier. According to the present invention, the data carrier comprises a laser-sensitive layer (20) that is opaque in the visible spectral range, and that is combined with a securing layer (22) that is metallized at least in a sub-area, the identifiers (30, 32) being introduced by the laser beam simultaneously and in perfect register into the laser-sensitive layer (20) and the metallized sub-area (24) of the securing layer (22).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.