Abstract: A device for producing a reflection hologram by means of a master, which is formed by a substrate on which a saw-toothed shaped structure is formed by molding, mechanical or lithographical methods. The structure has a reflective finish, such that the desired surface is produced on the structure. The light of a laser light source is expanded by means of an optical device, thus enabling a beam having a predetermined beam width to be obtained. The beam radiates the master and is reflected by the structure at an angle ? in relation to the incident beam. Above the smooth surface arranged over the structure a photopolymer-film, containing a photo-sensitive layer that is disposed at a distance in relation to the structure, is arranged and the reflection hologram is produced in the photo-sensitive layer.

Abstract: The invention relates to a device (1) for producing a reflection hologram (RH) by means of a master (3) which is formed by a substrate (4) on which a saw-toothed shaped structure (5) is formed by moulding, mechanical or lithographical methods. Said structure (5) has a reflective finish, is reflective or is metallised and is subsequently filled with a transparent layer (6) or a wavelength-selective layer (6), such that a desired surface is produced on the structure (5). The light of a laser light source (7) is expanded by means of an optical device, for example a lens (8) thus enabling a beam (9) having a predetermined beam width (R) to be obtained. The beam (9) radiates the master (3) and is reflected by the structure (5) at an angle a in relation to the incident beam (9).

Abstract: The present invention relates to a device for producing a reflection hologram, comprising a master hologram 1 which comprises at least one color-sensitive reflective layer, a photosensitive film 2 applied to the master hologram, and a filter 3 which is arranged on the film and through which light is passed onto the master hologram 1 and reflected towards the film 2, and a laser light source 4 which outputs white or monochromatic light.

Abstract: A device is disclosed for measuring the stickiness of a flowable medium, in particular a printing ink, which is led as a layer between two surfaces that can be moved in the same direction, through a convergence zone, a pressure zone and a divergence zone; it being possible to use a measuring device to measure, as a measure of the stickiness, that force which is needed to separate the surfaces from each other. At least one surface is led on a circularly cylindrical path. The two surfaces are driven positively in the same direction and at the same speed. The surfaces contain, at least in some sections, those materials of which the surfaces which are assigned to each other during the processing of the medium to be tested in intended devices, such as printing machines, are composed.