Patent · US Expired

Method of making a multilayer identification card usable as a printing block

US5122813A · kind A · utility

31Cited by

13References

13Claims

0Family size

Assignee

GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

Joseph Lass · Munich, DE
Hansjurgen Merkle · Munich, DE
Alexander Hierweger · Rottach-Egern, DE
Erwin Lob · Munich, DE

Key dates

Filing date	Jan 18, 1991
Grant date	Jun 16, 1992
Priority date	—
Expiry date	Jan 18, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S283/904
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An identity card is provided with a character set usable as a printing block, whereby the "natural foamability" that laser action brings about in the plastic materials commonly used for identity cards, such as PVC and polycarbonate, is exploited to obtain a relief height sufficient for a clear impression of the characters. The standard total height of the embossed characters relative to the rest of the card surface is reached by an additional deformation of the card body in the embossed character area so as to form flat plateaus underlying the characters.

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