Giesecke & Devrient Gmbh

Giesecke+devrient Currency Technology Gmbh

Friedrich Kretschmar

Manfred Heim

Wittich Kaule

Dieter Stein

Gregor Grauvogl

Jürgen Schützmann

J&uuml;rgen Sch&uuml;tzmann

Thorsten Pillo

Thomas Giering

Klaus Finkenzeller

Wolfgang Rauscher

Bernd Wunderer

Norbert Holl

Winfried Hoffmuller

Lars Hoffmann

Marius Dichtl

Reinhard Plaschka

Mario Keller

Theodor Burchard

Walter Schneider

Christoph Mengel

Ralf Hobmeier

Matthias Pfeiffer

Alexander Steinkogler

Bernhard Wiedner

Thomas Hildebrandt

Martin Seysen

Ralf Liebler

Winfried Hoffmüller

Christian Voellmer

Wolfram Seidemann

Harald Reiner

Michael Boehm

Juergen Schuetzmann

Markus Krombholz

Horst Reigl

Denise Schwab

Beatriz Cerrolaza

Carlos Carrasco

Fabiola Bellersheim

Frank Pitter

Eckart Schroeder-Bergen

Thomas Bodendieck

Jurgen Ruck

Bernd Oweger

Wolfgang Wensauer

Karin Winkler

Juergen Ruck

Winfried Hoffmueller

Winfried HOFFMÜLLER

Jürgen Zerbes

Robert Kallinger

Jürgen Ruck

Michael Böhm

A semi-finished product method with a liquid crystal security feature includes unrolling and transporting a continuous film in a transporting direction and providing on the film a liquid crystal layer containing a substance whose absorption of polarized light depends on its orientation. The method includes at least one of (A) arranging a lacquer layer on the film and embossing it for a first alignment structure, and at least partly covering it with the liquid crystal layer, the first alignment structure able to cause liquid crystal molecules of the liquid crystal layer to align only in a first direction in first regions and only in a second direction, in second regions, and (B) embossing the liquid crystal layer while the liquid crystal layer is uncured providing a second alignment structure to cause liquid crystal molecules to align only in a third direction in third regions and only in a fourth direction, in fourth regions.

Semi-finished product, security element, methods of producing them and document of value

The invention relates to a security element for securing documents of value. Along the security element a portion of a magnetic coding with first and second coding elements is arranged. The coding elements are arranged along a predetermined direction, wherein the first coding element continuously has along the predetermined direction a first magnetic region with a first coercive field strength and the second coding element has at least one first gap region and one second magnetic region with a second coercive field strength. At least one of the first magnetic regions is directly adjacent to at least one of the second magnetic regions. The sum of the lengths of the directly adjacent first and second magnetic regions amounts to a maximum of 8 mm.

Security element for securing documents of value

The invention relates to a security element for protecting documents of value, which has magnetic material. A portion of a magnetic coding is arranged on the security element, which coding consists of several magnetic areas and several gap areas. The portion of the magnetic coding is arranged in a predetermined direction along the security element, for example perpendicularly to a transport direction of the security element or document of value through a magnet sensor. Concerning the length of the magnetic areas and of the gap areas of the magnetic coding, certain length conditions are predetermined, which are chosen in dependence on the magnet sensor employed.

Security element for protecting documents of value

The present invention relates to a security element () for securing valuable articles, having a first layer (), composed of cholesteric liquid crystal material, that is present at least in some areas, a second layer (), composed of liquid crystal material, that is present at least in some areas, and a further layer (), having a machine-readable feature, that is present at least in some areas and that is covered at least in some areas by the first and second layer composed of liquid crystal material.

Security element and method for producing the same

The invention relates to documents of value, such as bank notes, checks, passports, ID cards or the like, with increased fitness for circulation, to a security paper for producing them, and to a method for producing said security paper and such documents of value.

Security paper

The present invention relates to a security element for securing valuable articles, having an optically variable layer () that imparts different color impressions at different viewing angles. According to the present invention, in a covering area (), a semi-transparent ink layer () is disposed on top of the optically variable layer (), the color impression of the optically variable layer () being coordinated with the color impression of the semi-transparent ink layer () in the covering area () when viewed under predefined viewing conditions.

Security element provided with an optically-variable layer and method for the production thereof

The invention relates to sheet material having an electrical circuit and to apparatuses and methods for processing said sheet material. The present invention describes sheet material having an electrical circuit as well as apparatuses and methods for processing same, which reduce the effort required for processing the sheet material and/or facilitate processing and/or improve it and/or make it more reliable. For this purpose, the sheet material has at least one electrical circuit, with energy and/or data being transmitted from the apparatus to the electrical circuit and/or from the electrical circuit to the apparatus and at least part of the transmitted data being used for processing.

Devices and method for the production of sheet material

The invention relates to a security device having at least one plastic layer and one specularly reflecting metal layer. An inorganic auxiliary layer is disposed between the plastic layer and the metal layer.

Security device and method for producing it

Security element and method for producing same

Growing community of inventors

Munich, Germany

Friedrich Kretschmar