Orga Systems Gmbh

Leonard Kurz Gmbh & Co. Kg

Leonhard Kurz Gmbh & Co., Kg

Leonard Durz Gmbh & Co. Kg

U-nica Technology Ag

Gerhard Zinner

Norbert Lutz

Dirk Fischer

Ulrich Knaack

Matthias Schumacher

A process for the production of a multi-color image is described. Preferably a transfer film is used which has a laser-sensitive layer (). The laser-sensitive layer () comprises a three-component mixture. The components are coloring agents which are bleachable with laser radiation, in particular pigments, for example cyan pigment, magenta pigment and yellow pigment. With the process the procedure is such that in the individual steps only a respective one of the pigment components is bleached insofar as the laser conditions which are respectively specific to the various pigment components are set. This means that in the case of the three-component mixture only a first component is bleached by laser treatment of a given location in a first step by laser irradiation and only one other component is bleached in an optional second step and only one third component is bleached in an optional third step. The color at the location in question is afforded in each case by subtractive color mixing of the remaining unbleached components.

Plastic body in the form of a film, for example a transfer film or laminating film, or provided with such a film and a process for the production of a multi-color image on or in such a plastic body

The invention relates to a process for the production of a multi-layer image, preferably a multi-color image. A transfer film which is applied to a paper ubstrate and which is treated with laser irradiation is used. The transfer film has a laser-sensitive layer and a background layer arranged therebeneath. The laser-sensitive layer comprises laser-sensitive material, for example laser-sensitive pigments or other laser-sensitive coloring agents. The laser-sensitive material in the layer is region-wise bleached by laser irradiation. That results in a so-called laser-induced image component. As it is transparent or partly transparent, the background layer which is arranged therebeneath and which can have a printed image then becomes visible from above in that region. That therefore gives a multi-layer image which is formed by the laser-induced image component and by the background layer jointly.

Multilayer image, particularly a multicolor image

Described is a multi-layer body having two laser-sensitive layers. The multi-layer body is a body laminated from the overlay films, the inletsand the further overlay films. At its underside the upper overlay filmhas a layer structure applied there, by the application of a hot stamping film. The layer structure comprises a lacquer layer, a reflection layer, a laser-sensitive layer, a background layerand an adhesive layer. A diffraction and/or hologram structureis provided in the lacquer layer, the reflection layerand the laser-sensitive layer. The second laser-sensitive layer is formed by the carbon-doped overlay film By means of laser treatment, it is possible to produce a laser-induced, preferably colored image component in the upper laser-sensitive layerand a further laser-sensitive image component, preferably in the form of a gray scale image, in the subjacent carbon-doped laser-sensitive layer. A laser-induced multi-layer image is formed in that way.

Multilayer body with a first laser-sensitive layer and a second laser-sensitive layer and method for generation of a multilayer image in said multilayer body

Described is a laminate body, in particular a laminate foil, comprising a laser-sensitive layer and an identification element, for example a diffraction and/or hologram structure, a reflection layer, a printed image or the like, which is provided in a second layer and/or in the laser-sensitive layer, wherein the laser-sensitive layer has a marking produced by laser action, which is positioned in accurate register relationship relative to the identification element In addition the subject of the invention is a method of enhancing the forgery-proof nature of such a laminate body in which the laminate body is irradiated by means of a laser so that produced in the laser-sensitive layer is a laser-induced marking positioned in accurate register relationship with the position of the identification element.

Laminate body, in particular a laminate foil and a method of increasing the forgery-proof nature of laminate body

The present invention relates to a process for increasing the level of safeguard in respect of forgery of paper documents. For that purpose, applied to the paper document is a transfer film or laminating film having a laser-sensitive layer. This multi-layer body is then treated with laser radiation. In that case, a laser-induced marking is produced in the laser-sensitive layer, for example, by laser-induced bleaching, laser-induced color change or laser-induced blackening. Respective individualization of the document can be effected by way of that laser-induced marking.

Multilayer body with a laser-sensitive layer

The present invention relates to a multi-layer body which is a paper document with a hot stamping film embossed thereon. The hot stamping film has a laser-sensitive layer in which a laser-induced color image is produced by laser treatment. Arranged on the document are further security identifications such as a security print, which is in the form of guilloche patterns, fluorescent threads, and a security strip. Water marks are also provided in the paper document.

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Pyrbaum, Germany

Gerhard Zinner