Valuable document comprising a security element and method for producing said valuable document

US7427029B2 · kind B2 · utility

Assignee

• BUNDESDRUCKEREI GMBH · DE

Inventors

• Anett Bailleu · Berlin, DE
• Arnim Franz-Burgholz · Berlin, DE
• Hans Demanowski · Mölln, DE
• Daniel Grammlich · Karlsruhe, DE
• Manfred Paeschke · Wandlitz, DE
• Konstantin Pötschke · Berlin, DE
• Martin Sprenger · Berlin, DE

Key dates

• Filing date: Mar 31, 2004
• Grant date: Sep 23, 2008
• Expiry date: Mar 31, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B42D25/387
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A valuable document comprising at least one security element that is provided with a marking layer in a marking region, the layer containing an electroluminescent pigment and being applied to a carrier body. The electroluminescence of the pigment of one such valuable document must be able to be excited even with comparably low, externally applied field intensities. To this end, a plurality of electrically insulated field displacement elements having a minimum dielectric constant of 100 are distributed over the surface of the marking region, the field displacement elements being at a distance of approximately between 5 μm to 500 μm from each other and compressing the applied field in the gaps thereinbetween.