Guilloche identification card

US4504083A · kind A · utility

Assignee

• GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

• Ludwig Devrient · Vaterstetten, DE
• Wolfgang Gauch · Otterfing, DE

Key dates

• Filing date: Jun 28, 1982
• Grant date: Mar 12, 1985
• Expiry date: Jun 28, 2002

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B42D25/42
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

An identification card having photographically recorded individualizing data is provided. The photographically recorded data are interspersed with a security pattern in transparent ink. This pattern is printed onto the photographic layer before the photographic data are recorded. The photographic recording process is carried out in such a way that there is no darkening under the security pattern. The security pattern, recognizable through the transparent printing ink, is thus also impressed upon the photographically recorded data.