摘要:
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.
摘要:
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.
摘要:
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.
摘要:
A diffusing display screen resulting from the combination of a cell comprising a polymer dispersed liquid crystal material which can be made diffusing, and of a cell comprising an electrochromic material which can be made absorbing and reflecting. Outside the operating mode, the display screen according to the invention has the advantage of being transparent, and thus capable of being fixed onto any surface (window, wall, etc.).
摘要:
The method of the invention consists, on the one hand, in serially recording on a tape of photosensitive film a succession of volume holograms each relating respectively to an item of information of a corresponding document to be made secure, each of these holograms being accompanied by an identification and positioning code printed on the same film, in developing and in fixing the holograms thus recorded, and on the other hand in printing at the same time the identity documents with their individual identification codes which are the same as those of the respective corresponding holograms, in adding an adhesive to the holograms after their fixing, and in adhesively bonding together each hologram and the corresponding document after verifying that their respective identification codes match.
摘要:
The method of the invention consists, on the one hand, in serially recording on a tape of photosensitive film a succession of volume holograms each relating respectively to an item of information of a corresponding document to be made secure, each of these holograms being accompanied by an identification and positioning code printed on the same film, in developing and in fixing the holograms thus recorded, and on the other hand in printing at the same time the identity documents with their individual identification codes which are the same as those of the respective corresponding holograms, in adding an adhesive to the holograms after their fixing, and in adhesively bonding together each hologram and the corresponding document after verifying that their respective identification codes match.
摘要:
An assembly for a rotary press is provided including a hub which is suitable for being rotatably mounted about a center axis in a rotary press, a format adaptation sleeve and means for fixing the adaptation sleeve to the hub. The hub and the adaptation sleeve each include a stop surface. The stop surfaces have a frustoconical shape about the center axis, and the fixing means comprise a radial stop element which is suitable for being interposed between the hub and the adaptation sleeve.
摘要:
A folding jaw arrangement (11) at a lateral surface (9) of a product-carrying cylinder (10) in folding apparatuses. The folding jaw arrangement (11) includes a stationary folding jaw part (13) and a movable folding jaw part (14). Formed therebetween is a gap (12) into which a folding means (5) of further cylinder (4) co-operating with the product-carrying cylinder (10) plunges during the cross-folding of products. In the process, the product to be cross-folded passes from the further cylinder (4) to the lateral surface (9) of the product-carrying cylinder (10) and is held thereon by the folding jaws (11). The movable folding jaw part (14; 29, 40) is provided with resilient regions (20, 27) via which the product is brought into and held in contact (15) with the stationary folding jaw part (13) of the folding jaw arrangement (11).
摘要:
A bearing unit for throwing a movable nip pulley on and off a stationary mounted nip pulley has an actuating device for throwing the movable nip pulley laterally onto a material web, and adjustable stops for adjusting an actuating travel of the movable nip pulley. The bearing unit includes a bearing plate whereon one of the adjustable stops is accommodated, and a bearing foot having an anchorage. The bearing plate is movable around the anchorage of the bearing foot so as to be adjusted coaxially with respect to the anchorage. The bearing plate also includes a prestressing element accommodated on the bearing plate, a bearing housing subjectible to a loading by the prestressing element, and a damping element actable upon the prestressing element. A folder including the bearing unit is disclosed.
摘要:
An assembly for a rotary press is provided including a hub which is suitable for being rotatably mounted about a center axis in a rotary press, a format adaptation sleeve and means for fixing the adaptation sleeve to the hub. The hub and the adaptation sleeve each include a stop surface. The stop surfaces have a frustoconical shape about the center axis, and the fixing means comprise a radial stop element which is suitable for being interposed between the hub and the adaptation sleeve.