Optically variable security element having reflective surface region

US11654709B2 · kind B2 · utility

Assignee

• GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

• Kai Herrmann SCHERER · Munich, DE
• Maik Rudolf Johann SCHERER · Grainau, DE
• Raphael Dehmel · Neubeuern, DE
• Michael Rahm · Bad Tölz, DE
• Giselher Dorff · Holzkirchen, DE
• Andreas Rauch · Ohlstadt, DE
• Christian Fuhse · Otterfing, DE
• Tobias Sattler · Holzkirchen, DE

Key dates

• Filing date: Jul 9, 2019
• Grant date: May 23, 2023
• Expiry date: Jul 9, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B42D25/445
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

An optically variable security element has a multicolored, reflective areal region including a first relief structure disposed at a higher level than a second relief structure. The first relief structure has a first ink coating and the second relief structure has a second, different ink coating. The two relief structures overlap in an overlap region. The first ink coating of the first relief structure is disposed at a higher level in the overlap region and has at least one recess the dimension of which is more than 140 μm. The first ink coating comprises an edge region adjoining the recess, and as a bicolor register feature the first relief structure lets the edge region of the first ink coating appear with a first color impression and the second relief structure through the recess lets the second ink coating appear with a second, different color impression in mutual register.