Patent · US Expired

Method of producing an identification card

US4735670A · kind A · utility

29Cited by

2References

10Claims

0Family size

Assignee

GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

Thomas Maurer · Munich, DE
Hans J. Holbein · Munich, DE

Key dates

Filing date	Aug 25, 1986
Grant date	Apr 5, 1988
Priority date	—
Expiry date	Aug 25, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T156/1092
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The disclosure concerns an identification card containing information such as name, account number, photograph of the card owner, etc. The card is protected by a superjacent printed security pattern, such as a guilloche, or other pattern which is difficult to imitate, or a homogeneous printed surface. The information is inscribed into the identification card material through the printed security pattern by a laser beam recorder. The energy of the laser and the colors of the printed security pattern are coordinated with each other in such a way that the laser light is not absorbed by the printed security pattern and the latter is not destroyed by the laser light.

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