Giesecke & Devrient Gmbh

Gao Gesellschaft Fur Automation Und Organisation Mbh

Giesecke+devrient Currency Technology Gmbh

Theodor Burchard

Winfried Hoffmuller

Manfred Heim

Michael Rahm

Wittich Kaule

Christian Fuhse

Klaus Finkenzeller

Andreas Rauch

Christian Schmitz

Walter Schneider

Michael Boehm

Lars Hoffmann

Marius Dichtl

Reinhard Plaschka

Mario Keller

Gregor Grauvogl

Raphael Dehmel

Maik Rudolf Johann Scherer

André Gregarek

Jürgen Schützmann

Patrick Renner

Friedrich Kretschmar

Maurizio Lazzerini

Christoph Mengel

Matthias Pfeiffer

Bernhard Wiedner

Andreas Aigner

Thorsten Pillo

Gunther Wild

Josef Schinabeck

Ralf Liebler

Winfried Hoffmüller

Giselher Dorff

Rudolf Seidler

Thomas Mang

Markus Krombholz

Andreas Hanelt

Björn Teufel

Manfred Dotzler

Horst Reigl

Wolfgang Wensauer

Anne Bucker

Armin Weingartner

Thomas Bodendieck

Bernd Oweger

Jurgen Ruck

Helmut Müller

Günther Wild

Jürgen Ruck

Anne BÜCKER

Michael BÖHM

Patrick Engelmann

Karin Winkler

Andreas HÄNELT

Winfried Hoffmueller

Juergen Ruck

Alexander Tantscher

A micro-optical inspection arrangement comprises micro-focusing elements which are composite bodies consisting of a main part and an additional part and which have a reference focal length. The main parts are provided as micro-focusing element preforms, and the additional parts are formed from one or more functional coatings. The invention also relates to a method for producing such a micro-optical inspection arrangement and to a micro-optical displaying arrangement comprising the micro-optical inspection arrangement according to the invention and a microstructure arrangement, in particular a moir&#xe9; magnification arrangement and a modulo magnification arrangement. The invention also relates to security elements and data carriers that have the micro-optical inspection arrangement according to the invention.

Micro-optic viewing arrangement

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 security element () for security papers, value documents and the like having a diffraction pattern that exhibits an embossed relief pattern () and a coating layer () that increases the visibility of the diffraction effect of the embossed relief pattern (). According to the present invention, the relief pattern () is formed on the basis of a cholesteric liquid crystalline material () and the coating layer () includes a reflective () and/or a high-index layer ().

Security element and method for its production

A method for producing a microstructure on a carrier by: (a) manufacturing a donor foil by forming an embossed structure with elevations and depressions in a first foil material and applying a transfer layer to the embossed structure, (b) manufacturing an acceptor foil by applying an adhesive layer to a second foil material, (c) laminating the donor foil and the acceptor foil by means of the adhesive layer, the transfer layer on the elevations of the embossed structure bonding to the adhesive layer, and (d) transferring the bonded regions of the transfer layer to the acceptor foil by separating the donor foil and the acceptor foil from each other, thereby forming in the acceptor foil a first microstructure from the transferred regions of the transfer layer, and/or forming in the donor foil a second microstructure complementary to the first microstructure.

Method for producing a microstructure on a carrier

The present invention relates to a dewatering screen for manufacturing paper having multi-level watermarks, having a carrier mold () that exhibits, in a fractional region, a multi-level relief () in the form of the watermark to be produced. According to the present invention, it is provided that the multi-level relief is formed by an injection-molded, perforated () watermark insert ().

Dewatering screen and method for manufacturing the same

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

Method for producing a microstructure

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

Dewatering screen and method for the production thereof

The present invention relates to a foil material for transfer to a target substrate, and methods for manufacturing such a foil material. In a method according to the present invention, a plastic substrate foil () is provided that is suitable for aligning liquid crystal material. To the substrate foil () is discontiguously applied a layer () comprising a liquid crystal material that is aligned.

Sheeting and methods for the production thereof

A security element for securing value documents has a first light-polarizing layer that is present at least in some areas and includes a cholesteric liquid crystal material, that selectively reflects light having a predetermined circular polarization, and that selectively reflects light of a firs wavelength range in a first reflection direction and light of a second wavelength range having a second, different reflection direction. A second light-polarizing layer is present at least in some areas and selectively reflects light having the opposite circular polarization to the predetermined circular polarization and selectively reflects light of the first and second wavelength range in the first and second reflection direction, respectively. A semi-transparent filter layer on which the first and second light-polarizing layer are stacked, absorbs light from the visible spectral range and transmits light from the first and/or second wavelength range.

Security element and process for producing the same

The invention relates to a security document, in particular a bank note, identity card or the like, having a security element which is provided with characters, patterns, etc., visually readable at least in transmitted light and which is electrically conductive and bears additional substances for machine testing, and to a method for producing such a security element. The security element preferably consists of a transparent film strip that bears negative writing readily capable of visual checking and is additionally provided with electrically conductive and magnetic substances.

Magnetic metallic safeguarding thread with negative writing

Magnetic metallic safeguarding thread with negative writing and a method

Growing community of inventors

Gmund, Germany

Theodor Burchard