Patent · US Expired

Data carrier having a picture theme superimposed by a line pattern and a method of producing same

US4459020A · kind A · utility

11Cited by

7References

5Claims

0Family size

Assignee

GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

Stefan May · Herbertshausen, DE
Hans E. Muller · Saratoga, US

Key dates

Filing date	Oct 2, 1981
Grant date	Jul 10, 1984
Priority date	—
Expiry date	Oct 2, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S283/904
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A data carrier, in particular check paper, having a picture theme printed on by the dot screen, grain screen, line-half-tone combination or special screen techniques or as a line copy, which is printed over by a security pattern serving the purpose of protecting the data carrier. The picture theme is interrupted by a negative security pattern adapted to the security pattern, into which negative security pattern the security pattern is printed congruently. The lines of the negative security pattern are preferably wider than the lines of the security pattern, so that the lines of the security pattern integrated into the picture theme are at a certain distance from the lines of the negative security pattern in the entire picture area and do not touch the picture theme.

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