Abstract: A nozzle for simultaneous application of a string of glue on two facing adjacent disc surfaces, especially for gluing together two optical disc elements to form a DVD. In order to make possible higher glue application rates and smaller dimensions of the glue application nozzle, the nozzle can steer the flow towards the facing disc elements. For this purpose, the nozzle has a channel outlet opening which has upper and lower outlet areas and therebetween a constricted outlet area.

Abstract: A device suitable for manufacturing an optical registration carrier, such as a master plate, which device comprises a support for said optical registration carrier, at least a first and a second light source, wherein the wavelengths of the light from said first and said second light source are different from each other, as well as an objective disposed between said light sources and said support, which is movable with respect to said light sources. A correction lens is disposed between the first light source and the objective, which correction lens can be moved jointly with the objective. The focal points of the two light sources at least substantially coincide with various movements of the objective and the correction lens with respect to the light source.

Abstract: The invention relates to a method of manufacturing a stamper for producing optical disks, comprising the application of a photoresist to a stamper plate and the structuring of the applied photoresist film. The structuring comprises the successive exposure, development and heating of the photoresist film. The developed photoresist film is subjected to an additional exposure in the deep UV range prior to the final heat treatment. The invention also relates to a stamper and to an optical disk obtained using the stamper.

Abstract: A method of manufacturing a stamper for producing optical discs involves the application of a photoresist film to a substrate and subsequently structuring the photoresist film by exposing and developing the photoresist film. The method is characterized in that an electrically conducting substrate is used. The substrate having the structured photoresist film thereon is subjected to passivation treatment, and is further subject to galvanic treatment for the purpose of forming a nickel layer thereon. After the nickel layer is formed, the nickel layer is separated from the substrate so as to obtain a stamper. The stamper can be used to prepare optical discs.

Abstract: The invention relates to a method of manufacturing a matrix for the production of optical disks by applying a photoresist film to an unstructured matrix plate and structuring the photoresist film by selectively exposing and developing said film. When a negatively acting photoresist is used, the matrix may be metal-plated on the surface provided with the photoresist film after structuring of the photoresist film. Structuring of the photoresist film may comprise heating of the selectively exposed photoresist film, integral exposure of the photoresist film prior to developing and heating of the photoresist film following developing. The unstructured matrix plate may be etched, using the structured photoresist film as a mask, after which the photoresist film is removed to produce the matrix. Prior to applying the photoresist film to the unstructured matrix plate a metal film may be applied, to a thickness equal to the height of the structure desired in the matrix.

Abstract: A substrate is processed in a device having a vacuum chamber, at least one sputtering chamber, and a flow channel connecting the vacuum chamber to the sputtering chamber. According to the method, material is sputtered onto the substrate located in the sputtering chamber so that a sputtering gas flux amount is consumed by deposition onto the substrate. Prior to and during sputtering, sputtering gas flux flows into the vacuum chamber so that the total amount of sputtering gas flux flowed into the vacuum chamber prior to sputtering is substantially equal to the sputtering gas flux amount. At least during sputtering, the vacuum chamber is maintained at a partial pressure in a range of from more than 1.times.10.sup.-5 mbar up to 5.times.10.sup.-3 mbar.

Abstract: A device for processing a disc-shaped substrate, which device comprises a plurality of stations arranged in side-by-side relationship, whereby the substrate can be moved into and out of the device in a first station and be subjected to a processing step in a second station, said device furthermore being provided with a transport mechanism for transporting the substrate between the various stations, whereby each station comprises two side walls and an intermediate plate extending between said side walls, which intermediate plate is provided with a guide section extending between the sides of said side walls that face away from each other, whereby stations positioned adjacently to each other are attached together by means of the side walls facing each other and whereby said stations are positioned with respect to each other in such a manner that the intermediate plates and the guide sections are in line, whereby the transport mechanism is capable of movement between the various stations over said guide sections

Abstract: The invention relates to a device for processing objects, said device being provided with a number of stations comprising supporting means for supporting objects in said stations, and with conveying means, by which the objects can be moved from one station to another station. A transport means, which is capable of rotating movement about a vertical axis of rotation and translating movement parallel to said axis of rotation, is fitted with gripping means for gripping and moving the objects between the various stations. The transport means is supported by at least three spaced-apart carriers, which are in turn supported by sliding pieces, which are journalled in such manner as to be capable of sliding movement in vertical direction. Two hinged-together links are provided between a sliding piece and the frame, one being hinged to the sliding piece, the other being hinged to the frame and both being hinged to a connecting rod which is movable in a plane extending transversely to the axis of rotation.

Abstract: A magnetron sputtering system comprising a sputtering chamber. Present within the chamber are a flat cathode plate, an anode, which is cylindrical in one embodiment, and an annular auxiliary electrode. The electrodes are provided co-axially. In this embodiment the anode extends axially from a central area of the sputtering surface of the cathode plate. The auxiliary electrode extends axially from a circumferential area of the sputtering surface of the cathode plate. The anode is electrically insulated from the cathode plate. During operation the auxiliary electrode has a negative potential in relation to the anode potential. Furthermore the chamber comprises a receiving device for receiving a flat substrate to be coated with cathode plate material at a position opposite and parallel to the cathode plate. A magnetic device is provided outside the chamber for generating an electron trap around the anode, which magnetic device is surrounded by the auxiliary electrode.

Abstract: A method and a device for printing disc-shaped registration carriers, whereby a print built up of several colors is provided on the registration carrier. Use is made of a printing cylinder, which is moved over a few printing plates, which have been moistened with various colors of ink, whereby the printing cylinder is subsequently rolled over the registration carrier. The device comprises a plurality of processing stations for registration carriers, as well as a transport device by which the disc-shaped registration carriers can be moved from one processing station to the other processing station. One or more processing stations comprise a printing device disposed therein.

Abstract: A substrate plate of plastic material instead of glass for the manufacture of a metal mold for the production of optical registration carriers of plastic material. Polyether imide is a suitable plastic material for forming the substrate plate. A suitable molding process is injection molding, wherein a highly polished mold is used.