US 12,403,717 B2
Method for producing a data carrier having a luminescent security element, and data carrier
Thomas Giering, Kirchseeon (DE); Thomas Happ, Munich (DE); Stephan Steinlein, Munich (DE); Johann Kecht, Munich (DE); Kai Uwe Stock, Grunwald (DE); and Sina Scholz-Riecke, Munich (DE)
Assigned to GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich (DE)
Appl. No. 18/693,640
Filed by GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich (DE)
PCT Filed Sep. 22, 2022, PCT No. PCT/EP2022/025439
§ 371(c)(1), (2) Date Mar. 20, 2024,
PCT Pub. No. WO2023/046319, PCT Pub. Date Mar. 30, 2023.
Claims priority of application No. 10 2021 004 847.4 (DE), filed on Sep. 24, 2021.
Prior Publication US 2024/0391271 A1, Nov. 28, 2024
Int. Cl. B42D 25/387 (2014.01); B42D 25/29 (2014.01)
CPC B42D 25/387 (2014.10) [B42D 25/29 (2014.10)] 21 Claims
OG exemplary drawing
 
1. A method for producing a data carrier having a luminescent security element having at least two subregions, which at least do not completely overlap one another, the method comprising:
Z) specifying target chromaticity coordinates,
B1) providing a first printing ink, which upon illumination using white light generates a first color impression and upon illumination using excitation light has a first visible luminescence and generates a second color impression that corresponds to the specified target chromaticity coordinates,
B2) providing a second printing ink, which upon illumination using white light also generates the first color impression and upon illumination using excitation light has a second visible luminescence and generates a third color impression, which has different chromaticity coordinates and/or a different brightness than the second color impression of the first printing ink,
wherein printing inks are provided in step B1) and B2) as the first and second printing ink, and wherein remission and luminescence of each printing ink displays equally high stability to environmental influences, and
D) producing the luminescent security element on the data carrier, wherein a first subregion is printed on the data carrier using the first printing ink and a second subregion, which at least does not completely overlap the first subregion, is printed on the data carrier using the second printing ink.