Giesecke & Devrient Gmbh

Giesecke+devrient Currency Technology Gmbh

Andreas Pretsch

Manfred Heim

Christian Fuhse

Michael Rahm

Andreas Rauch

Lars Hoffmann

Bernhard Wiedner

Winfried Hoffmüller

Johannes Beier

Andreas Radler

Bernd Oweger

Johannes Kemper

Michael Dornfeld

Michael DÖRNFELD

Matthias Walther

Jürgen Ruck

Peter OSENSTÄTTER

Peter Riedl

Birgit Seiss

Herbert Zaschka

Birgit Seiß

Frank Sievers

Georg Kiefersauer

A method includes manufacturing a sheet-type substrate having a security thread in which a security thread having features spaced apart from one another in the longitudinal direction of the security thread is inserted into the substrate in such a way that it is at least partially embedded in the substrate. At least one of the features is displayed as an image after the embedding of the security thread. The stretch of the embedded security thread in the longitudinal direction is calculated based on the image of the at least one feature, and the region of the substrate in which the calculated stretch of the security thread exceeds a specified maximum stretch is obliterated depending on the calculated stretch.

Method and device for manufacturing a sheet-like substrate

A mounting cylinder () for mounting cylindrical embossing tools for embossing rolls for embossing diffraction gratings or holograms includes a mounting shell () for mounting the embossing tool and a fixing device for fixing the mounting shell () on a shaft () and a tempering device for tempering the mounting shell. According to one variant, the embossing tool is expanded by compressed air in order to be slipped onto the mounting shell or removed therefrom, a compressed air channel system () with radial compressed air discharge openings () extending axially and/or tangentially within the mounting shell (). According to another variant, the mounting shell is expanded mechanically in order to fix a embossing tool slipped over the mounting shell and simultaneously fix the mounting shell () on the shaft ().

Mounting cylinder for mounting cylindrical embossing tools for embossing rolls

Growing community of inventors

Holzkirchen, Germany

Andreas Pretsch