Bundesdruckerei Gmbh

Giesecke & Devrient Gmbh

Other

Leuchtstoffwerk Breitungen Gmbh

Bundesdruckeri Gmbh

Baumer Electric Ag

Arnim Franz-Burgholz

Benedikt Ahlers

Roland Gutmann

Anett Bailleu

Frank Kappe

Manfred Paeschke

Detlef Starick

Gunther Dausmann

Monika Voh

Hans Zerbel

Wolfgang Schmidt

Oliver Muth

Uwe Weber

Zishao Yang

Peter U Halter

Harald Hoeppner

Robert Massen

Ralf Paugstadt

Thomas Leitner

Thomas Franz

Hans-Jürgen Limburg

Detlef M&auml;rtens

Thomas L&ouml;er

Peter Halter

Gabriele Brauer

Helge Brockmann

Günther Dausmann

G&uuml;nther Dausmann

J&ouml;rg Eberhardt

Martin Sprenger

Konstantin Pötschke

Daniel Grammlich

Hans Demanowski

Thomas Loer

Detlef Martens

Jorg Eberhardt

Konstantin Poetschke

Kuen Jakob

The invention relates to a security system especially for security documents, wherein a security element is provided in a carrier plane, that under incident light holographically reconstructs a pattern outside the carrier plane, in which concealed information is stored and having a flat transparent verification element which on flat contact with the security element makes the information stored therein visible. The invention further relates to a security element and a verification element for use in the security system and a security document fitted with the security system. The invention additionally relates to an apparatus and a method for reading out the concealed information which is stored holographically in the pattern reconstructed on the security element under incident light.

Security system, particularly for valuable documents

Security system, especially for security documents

A valuable document comprising at least one security element that is provided with a marking layer in a marking region, the layer containing an electroluminescent pigment and being applied to a carrier body. The electroluminescence of the pigment of one such valuable document must be able to be excited even with comparably low, externally applied field intensities. To this end, a plurality of electrically insulated field displacement elements having a minimum dielectric constant of 100 are distributed over the surface of the marking region, the field displacement elements being at a distance of approximately between 5 &#x3bc;m to 500 &#x3bc;m from each other and compressing the applied field in the gaps thereinbetween.

Valuable document comprising a security element and method for producing said valuable document

Zinc sulfide electroluminophores are prepared from solutions of zinc salts with hydrogen sulfide. The zinc sulfide compounds are mixed with activator and coactivator compounds to produce luminophores, and the mixtures are fired in the presence of fixing agents. These fired materials are then treated in an acid bath, washed, neutralized, and optionally filtered and dried.

Zinc sulfide electroluminophores and method for production thereof

A method and apparatus are disclosed for determining the authenticity of secured documents which include an authentication element of the type which, when excited with radiation of a specific excitation wavelength, emits radiation which can be detected by a detection unit and evaluated by an evaluating unit. The intensity profile of the emitted radiation is determined in a specified wavelength range over a predetermined measuring period after excitation and analyzed to determine authenticity of the secured document.

Apparatus and method for detecting the authenticity of secured documents

A manually controlled sensor for authenticity identification of luminescent identification features on documents is described, in which the identification feature is illuminated with an excitation wavelength and may respond at a different wavelength, with the response wavelength being detected and evaluated by a radiation receiver. In order to improve the sensitivity and to comply with the safety at work regulations, a focused beam ( ), which is emitted from a beam source ( ), is converted by focusing optics ( ) in such a manner that a scanning bar ( ), which is approximately in the form of a line, is projected on the surface of the object ( ) to be investigated, which causes the identification region ( ) which is arranged on the object ( ) to fluoresce in a luminescent manner in at least one subregion, and the luminescence signal produced in this way is passed via detection optics ( ) to an evaluation unit ( ), which evaluates the luminescence signal. The sensor is intended to be classified in laser class A.

Handsensor for authenticity identification of signets on documents

An apparatus for evaluating distinguishing authenticity features comprising diffraction elements on a document which is illuminated by an illumination source. The distinguishing authenticity element which is to be examined, diffracts the beam of the illuminating source and projects it onto an evaluating unit in the device. In order to be independent of the nature and location of the diffraction pattern, the diffraction pattern derived from the document to be examined is projected onto a screen and the image of the pattern recorded and evaluated by a camera (matrix or cells).

Device for evaluating diffractive authenticity features

A sensor is proposed for authenticity identification of luminescent identification features on documents, in which the identification feature is illuminated with an excitation wavelength and may respond at a different wavelength, with the response wavelength being detected and evaluated by a radiation receiver. The focused beam emitted from a beam source is converted by focusing optics in such a manner that a scanning line, which is approximately in the form of a bar, is projected on the surface of the document to be investigated, which causes the signet, which is arranged on the document, to fluoresce at least in one subregion, and the fluorescence signal produced in this way is passed via detection objects to an evaluation unit, which evaluates the fluorescence signal.

Sensor for authenticity identification of signets on documents

The invention relates to a device for validating authenticity features on documents of value and security documents, especially bank notes, personal documents, plastic cards and similar. The device consists of an automatic testing apparatus into which the bank notes for testing are fed and hereby run through a detector device. The detector device is suitable for detecting and evaluating the electroluminescent properties of the authenticity features.

Device for validating authenticity features on documents of value and security documents

A value or security product such as a banknote, ID card or the like, is provided with luminescent security elements which are excitable in an electromagnetic alternating field. A production method of applying the required colors and substances to the value or security product is also provided. Also included is a respective security technology arrangement for visual and machine-operated detection of authenticity, where electrical fields in particular and optical radiation, preferably in the UV wavelength range, are used to excite so-called phosphorous colors, and additional optical effects in the visible UV wavelength range can be achieved by secondary excitation mechanisms.

Value or security product with luminescent security elements and method for the production and use thereof in respect to visual and machine-operated detection of authenticity

A security document with optically excitable dyes for authenticity checking. Dyes are applied to or embedded in the security documents. The dyes are advantageously embedded in a carrier material which in conjunction with the dyes forms a laser-active element. Certain optically excitable dyes are incorporated in a security document in such a way that when the security and/or sensitive document is optically excited, the dyes embedded in the security and/or sensitive document resonate with the material of the securities and secure documents, so that a well-defined narrow spectrum of all excited materials is emitted.

Security document with optically excitable dyes for authenticity check

Growing community of inventors

Falkensee, Germany

Arnim Franz-Burgholz