Identification card and a method of producing same

US4523777A · kind A · utility

Assignee

• GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

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

Key dates

• Filing date: Dec 14, 1981
• Grant date: Jun 18, 1985
• Expiry date: Dec 14, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S283/904
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

An identification card having information applied in the form of patterns, letters, numbers and/or images, formed by interruptions, in the homogeneity of different colored layer areas arranged superjacently on the identification card. The colored information can be produced by selectively removing the color layers by means of a controlled laser beam or by blurring or other chemical reactions induced by said beam. Thus identification cards can be produced having a high standard of security in spite of the simplicity of their production.