Abstract: The invention concerns an apparatus and a process for producing a marking on a substrate. Substrates marked in that way are applied to documents such as for example credit cards, personal identity cards or banknotes as security features for affording protection from forgery. Embodiments of these security features have diffractive or holographic structures. Production of the markings is produced by shaping from a mold. A change in the configuration of the marking is possible by changing the mold, which is time-consuming. The new apparatus and the new process are intended to permit the production of individualised markings on a substrate at a low level of apparatus expenditure.

Abstract: Described is an embossing apparatus for transferring a transfer layer of an embossing film on to a substrate body which is stable in respect of shape. The embossing station has two mutually spaced support rollers and a deflection roller around which runs an embossing belt. An embossing section of the embossing belt is defined by the support rollers. Provided in the proximity of the embossing station in parallel relationship with the embossing section is a transport device which is provided for transporting the substrate body to be embossed. The embossing belt and the transport device are driven simultaneously at the same advance speed.

Abstract: Described is a multi-layer body having two laser-sensitive layers 4, 32. The multi-layer body is a body laminated from the overlay films 30, 32, the inlets 90, 90 and the further overlay films 30, 30. At its underside the upper overlay film 30 has a layer structure applied there, by the application of a hot stamping film. The layer structure comprises a lacquer layer 50, a reflection layer 5r, a laser-sensitive layer 4, a background layer 5 and an adhesive layer 6. A diffraction and/or hologram structure 5b is provided in the lacquer layer 5c, the reflection layer 5r and the laser-sensitive layer 4. The second laser-sensitive layer is formed by the carbon-doped overlay film 32. By means of laser treatment, it is possible to produce a laser-induced, preferably colored image component in the upper laser-sensitive layer 4 and a further laser-sensitive image component, preferably in the form of a gray scale image, in the subjacent carbon-doped laser-sensitive layer 32.

Abstract: 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.

Abstract: The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The achromatic surface structures are combined with a thin-film structure, whereby upon turning or tilting the optically variable element, it is not the impression of a continuous color transition, but a defined, almost discrete color change that is produced for the viewer.

Abstract: In a guide roller for a stamping machine for deflecting a stamping foil web and/or a substrate web to be stamped upon, so that the guide roller has a negligibly low degree of friction, fixed to a roller spindle that is fixed with respect to the machine is at least one porous air-permeable spindle sleeve at which at least one roller sleeve is rotatably mounted. The roller spindle has a compressed gas passage for acting on the or each spindle sleeve with compressed gas to produce a gas cushion between the or each respective spindle sleeve and the associated roller sleeve.

Abstract: Described is a packaging (10) for a magnetic tape reel (12) wound on to a core element (32), comprising a tray element (14) with a bottom (16) from which a central centering projection (20) for centeredly fixing the core element (32) of the magnetic tape reel (12) and stacking projections (22) which are radially equally far away from the centering projection (20) for stacking tray elements (14) one upon the other project upwardly in the same direction.

Abstract: The invention concerns a process and an apparatus for the production of a partially metallised film element and a partially metallised film element produced by means of the process. A digital data set (332) which defines the graphical shape of the partial metallisation is produced. A tool path and control data for actuation of a tool (38) are calculated from the digital data set (332). The tool (38) and a single-layer or multi-layer film body (30) are moved relative to each other in accordance with the tool path. The tool (38), controlled by the control data, produces partial digital demetallisation of a metal layer (31), in particular by applying an etching agent or an etching resist or by erosion of the metal layer (31).

Abstract: The invention concerns an optically variable element, in particular an optically variable safeguard element for safeguarding banknotes, credit cards and the like, and a security product and a foil, in particular an embossing foil or a laminating foil, with such an optically variable element. The optically variable element has a thin film layer (54, 55, 58) for producing color change by means of interference and a further layer (51, 52, 53, 59). The thin film is in the form of a partial thin film element which covers the surface region of the further layer only in region-wise and pattern-shaped manner.

Abstract: The invention relates to an optically variable element, in particular an optically variable safeguard element for safeguarding banknotes, credit cards and the like. The invention also relates to a security product and a foil, in particular an embossing foil or a laminating foil, having such an optically variable element. The optically variable element has a thin film for producing color shifts by means of an interference and/or a reflective layer. The optically variable element further has a transparent window. The interference film and/or the reflective layer include a partial element, namely a partial thin film element or a partial reflective element, respectively. The partial element or elements surround the surface region of the transparent window.