Giesecke & Devrient Gmbh

Giesecke+devrient Currency Technology Gmbh

Patrick Renner

Manfred Heim

Michael Rahm

Winfried Hoffmuller

Christian Fuhse

Andreas Rauch

Theodor Burchard

Christoph Mengel

Peter Schiffmann

Marius Dichtl

Lars Hoffmann

Jan Domke

Mario Keller

Maik Rudolf Johann Scherer

André Gregarek

Georg Depta

Matthias Pfeiffer

Bernhard Wiedner

Kai Herrmann Scherer

Josef Schinabeck

Ralf Liebler

Winfried Hoffmüller

Stefan Kokrhoun

Rudolf Seidler

Michael Sobol

Christoph Hunger

Giselher Dorff

Thomas Mang

Markus Krombholz

Manfred Dotzler

Björn Teufel

Veronika Rack

Bernd Stumbeck

Christoph Gebauer

Erwin Bacher

Roland Fleidl

Gregarek André

Patrick Engelmann

Günther Wild

Daniela Otto

Alexander Bornschlegl

Steffi Jahn

Katharina Reichel

Jürgen Ruck

Annett BÄHR

Katalin Szendrei-Temesi

Astrid Drexler

Christine Hettenkofer

Alexander Tantscher

A method for producing pigments having a specified contour, comprises the steps of creating a pigment layer on a starting substrate; detaching from the starting substrate; and structuring the pigment layer into a plurality of the pigments; characterized by bringing into contact the pigment layer with an intermediate substrate, wherein the pigment layer adheres at least in sections to the intermediate substrate; and separating intermediate substrate and starting substrate.

Method for producing pigment fragments with a predefined internal and/or external contour, and pigment fragments

A platelet-shaped pigment with a layer construction comprises the following layers in the order, optionally a carrier substrate; a transparent embossing lacquer layer with an embossed relief structure; a reflection-increasing coating which follows the relief structure and forms a reflecting microstructure, wherein the reflecting microstructure is present in the form of a mosaic of a multiplicity of reflecting mosaic elements and the reflecting mosaic elements do not reflect the incident light in the direction of the specular reflex, regarding the plane of the platelet, but in a spatial direction deviating therefrom and respectively have a lateral dimensiongreater than 2 &#x3bc;m.

Disc-shaped pigment, printing ink, security element and method of production

A method is for examining a sheet-shaped or card-shaped value document with a security feature having one or more cavities configured in the value document. The width of the cavity or cavities is in at least one respectively specified direction exceeding 10 &#x3bc;m. Transmission values are established in a locally resolved manner for the transmission of ultrasound in a specified frequency range. In employing the transmission values, it is checked whether a specified number of transmission values is greater than a specified transmission threshold value.

Method and device for examining a sheet-shaped or card-shaped valuable document having a security feature having one or more cavities

The present invention relates to a method for producing a security element (), to a security element () obtainable by the method according to the invention, to transfer materials having the security elements according to the invention, and to objects of value secured with the security elements according to the invention. The security element () according to the invention has two functional layers () which are bonded together by means of a resist layer (). The resist layer () has a pattern which is employed to generate a congruent pattern in the first functional layer (). Then the pattern of the resist layer (), and thus also of the first functional layer (), is exactly reproduced in the second functional layer (). This is achieved by bonding the second functional layer () in the form of the pattern of the resist layer (). The non-bonded areas of the second functional layer () are removed, thereby forming negative writing.

Method for the production of security elements having registered layers of designs

The present invention relates to a method for producing a security element (), to a security element () obtainable by the method according to the invention, to transfer materials having the security elements according to the invention, and to objects of value secured by the security elements according to the invention. The security element () according to the invention has at least two functional layers (), whereby each functional layer forms a motif and the motifs are either congruent, or one motif represents a photographic negative of the other motif. In the method according to the invention, the motif of one functional layer () is transferred into the other functional layer () with the help of an adhesive layer (). In so doing, there is reproduced in the adhesive layer an exact image of the motif of the first functional layer, and said image of the motif in the adhesive layer is in turn employed for reproducing an exact image of said motif or of its photographic negative in the second functional layer. The transfer of the motif from one functional layer into the other is achieved by the adhesive having areas of varying adhesive strength, induced by irradiation through the first functional layer, and bonding to the second functional layer only in the strongly adhesive areas. The non-bonded areas of the functional layer are removed.

Method for the production of security elements having mutually registered designs

The present invention relates to a method for producing a micropattern on a substrate (), in which

Method for producing a microstructure

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Reichersbeuern, Germany

Patrick Renner