Search International and National Patent Collections

1. (WO2018127269) SECURITY ELEMENT COMPRISING A LASERED SURFACE

Pub. No.:    WO/2018/127269    International Application No.:    PCT/EP2017/001443
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Sat Dec 23 00:59:59 CET 2017
IPC: B42D 25/41
B42D 25/346
B42D 25/435
Applicants: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
Inventors: PFEIFFER, Matthias
Title: SECURITY ELEMENT COMPRISING A LASERED SURFACE
Abstract:
The invention relates to a security feature for a security element, a security paper or a data carrier, said security feature having a carrier comprising a front face and a rear face, wherein the carrier has, on the front face and/or rear face, an arrangement of perforations produced using laser radiation, meaning that the thickness of the carrier is locally modified. According to the invention, the arrangement of perforations produced using laser radiation is irregular, meaning that a multitonal image is generated. In this context, "irregular" means that adjacently arranged perforations are not at the same distance from one another or not at a uniform distance from one another. Preferably, the perforations are arranged stochastically or randomly with respect to one another. Therefore, according to the invention, a pattern of irregularly or randomly arranged perforations is used, meaning that a multitonal image is produced.