Disc-shaped pigment, printing ink, security element and method of production

US11034182B2 · kind B2 · utility

Assignee

• GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

• Christian Fuhse · Otterfing, DE
• Michael Rahm · Bad Tölz, DE
• Manfred Heim · Munich, DE
• Patrick Renner · Reichersbeuern, DE
• Peter Schiffmann · Schwaz, AT
• Christoph Mengel · Mainz, DE

Key dates

• Filing date: Sep 19, 2018
• Grant date: Jun 15, 2021
• Expiry date: Sep 19, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B42D25/29
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A platelet-shaped pigment with a layer construction comprises the following layers in the order, optionally a carrier substrate; a transparent embossing lacquer layer with an embossed relief structure; a reflection-increasing coating which follows the relief structure and forms a reflecting microstructure, wherein the reflecting microstructure is present in the form of a mosaic of a multiplicity of reflecting mosaic elements and the reflecting mosaic elements do not reflect the incident light in the direction of the specular reflex, regarding the plane of the platelet, but in a spatial direction deviating therefrom and respectively have a lateral dimension 1 greater than 2 μm.