Abstract: In a device for engraving of cups into a rotating printing cylinder for rotogravure, at least one laser light source with which laser light for formation of the cups is directed onto the rotating printing cylinder. A metal removal element is arranged in a region of an impingement location of the laser light on the printing cylinder to form the cups such that a melt accumulation of material of the printing cylinder which forms a burr at the cups created by the impingement of the laser light is removed substantially continuously and substantially immediately after its creation with the removal element.

Abstract: An idle distance of an engraving stylus for engraving a rotogravure printing cylinder is set from the cylinder surface of the rotogravure printing cylinder by use of a sliding element that is provided for the guidance of the engraving stylus connected to the sliding element along the cylinder surface during engraving. The setting of the idle distance is undertaken relative to a reference surface that is indicative of the cylinder surface.

Abstract: A method for direct engraving of cups to accept printing ink in a surface of print cylinders specified for rotogravure. The engraving is executed such that the cups are formed from a predetermined number of engraved image points.

Abstract: In a method to produce a printing form for rotogravure, in particular for heliorotogravure, a surface of the formis provided with a wear-resistant layer and the surface is provided with cups. Furthermore, a printing form is provided whereby the surface of the printing form comprises a wear-resistant layer in which the cups, with regard to their depth, are at least partially provided therein. The printing form may be used in a printing device for heliorotogravure.

Abstract: In a method to produce a printing form for rotogravure, in particular for heliorotogravure, a surface of the formis provided with a wear-resistant layer and the surface is provided with cups. Furthermore, a printing form is provided whereby the surface of the printing form comprises a wear-resistant layer in which the cups, with regard to their depth, are at least partially provided therein. The printing form may be used in a printing device for heliorotogravure.

Abstract: In a rotogravure print block, and a method to produce a print block, by use of a laser beam engraving cups are generated in an engraving surface. Before the laser beam engraving, a chromium layer is applied to the print block as the engraving surface.

Abstract: In a method for operating an engraving member in an electronic engraving machine to engrave printing forms, especially printing cylinders for intaglio printing, a stylus of the engraving member is controlled by an engraving signal and engraves a sequence of cups arranged in a gravure screen in the rotating printing cylinder. The engraving signal is formed by superimposing the image signal representing the tone gradations to be engraved. In order to obtain good quality engraving, the engraving member is heated to a temperature that is close to operating temperature before engraving starts and/or during an interruption of engraving. For this purpose, the engraving member is driven with a periodic signal whose frequency is preferably located inside the ultrasonic range in order to avoid noise disturbances.

Abstract: An idle distance of an engraving stylus for engraving a rotogravure printing cylinder is set from the cylinder surface of the rotogravure printing cylinder by use of a sliding element that is provided for the guidance of the engraving stylus connected to the sliding element along the cylinder surface during engraving. The setting of the idle distance is undertaken relative to a reference surface that is indicative of the cylinder surface.

Abstract: In a device for extracting processing residues for a processing apparatus having a plurality of processing units preferably movable along a processing path, particularly for an engraving machine having a plurality of engraving supports, an admission opening of an extraction conduit is allocated to each processing unit. The device has a collecting main for the extraction. For this purpose, the collecting main is preferably designed as an extraction channel, and the end of each of the extraction conduits facing away from the processing unit comprises a mouthpiece that discharges into the extraction channel, namely preferably into an admission slot of the extraction channel, whereby it is movable along and in the admission slot.

Abstract: Lenses are brought individually or in pairs on a transport device (12) to a continuous vacuum apparatus (1) equipped with a rotating substrate carrier (3). The eyeglass lenses (13) are introduced through a system of locks (15) into the continuous vacuum apparatus (1), where they are coated in at least one controllable coating station (5, 6, 7) with at least one transparent layer and then sent back to the transport device (12). The eyeglass lenses (13) are given codes (18), and the codes are read by a code reader (19). The coating parameters of the individual coating stations (5, 6, 7) and the drive of the substrate carrier (3) are controlled by the code reader (19).

Abstract: In a method and an apparatus for coating a substrate (26) with electrically nonconductive coatings from an electrically conductive target (25) in a reactive (e.g.

Abstract: A vacuum chamber contains means for transferring a substrate for an information disc such as a CD from a loading station to a coating station, where material such as aluminum in wire form is evaporated in order to coat the substrate from above. An evaporation nozzle is continuously supplied with wire at a rate according to the coating thickness. The nozzle may be heated either resistively in order to evaporate the wire therein, or the wire may be directly heated by an induction coil.

Abstract: The invention relates to an arrangement for the production of a plasma as well as for applying charged and uncharged particles onto a substrate. Two areal electrodes connected to a voltage source are provided between which a plasma volume excited by high-frequency energy is ignited. The areal ratio of the two electrodes is variable in order to influence the energy of the ions impinging on a substrate. Furthermore, supplying of process gas distributed over the entire substrate area is possible.

Abstract: An electron beam generator designed for engraving surfaces of printing form cylinders is switched to microscope operation during engraving pauses in order to make engraved cups visible immediately and without additional auxiliary equipment. During microscope operation, deflection parameters and an intensity of an electron beam produced by the electron beam generator are changed for appropriate scanning. An image signal is acquired by detecting secondary electrons generated by the beam interacting with the cups in the printing form surface.

Abstract: A method for the topically precise subsequent-engraving of printing cylinders wherein special marks are engraved in the cylinder and evaluated. The marks are engraved in the form of cups forming a cup track. The cups serve as reference marks for an axial feed and start of the subsequent-engraving in a circumferential direction. After the printing cylinder has been mounted in an engraving machine for subsequent-engraving, the cylinder is placed in rotation and the scanner is moved over the previously engraved cup track axially. A maximum of the signals received from the scanner is identified and a location of the maximum in the cup track is retained as a reference value for the axial feed during the following engraving. A cup track is provided with at least one defined gap that is free of cups. A first cup following the gap is identified by means of the scanner and evaluated as a reference location for a start of engraving in the circumferential direction for the following subsequent-engraving.

Abstract: Apparatus for generating and controlling an electron gun in a vacuum envelope comprising, a cathode, means for controlling the temperature of the cathode to control its current emission, an auxiliary electrode with an aligned opening mounted adjacent to said cathode and with the electron beam from the cathode passing through said aligned opening, means for maintaining the voltage of said auxiliary electrode slightly more negative than said cathode, and an annular anode mounted in a spaced relationship from said cathode and said auxiliary electrode.

Abstract: In printing form production with electron beams, the imaging scale of the electron source on the source of the printing form is modulated gradation-dependent for engraving different cup geometries. The power density distribution in the effective point of the electron beam can then be approximately rectangular for all gradations. In particular, engraving the small cups, which was hitherto a vertical factor, is thus stable.

Abstract: An electron beam generating system provides a high degree of steadiness of the beam current and comprises a heated cathode, an auxiliary electrode lying at a more negative potential than the cathode, and a transpierced anode. A diaphragm surrounding the beam and connected to a precision resistor is further provided at that side of the auxiliary electrode facing away from the cathode. A portion of the beam current influenced by the control electrode is blanked out by the diaphragm. The precision resistor is connected as an actual value generator to a regulator which is connected to a reference voltage, the output of the regulator influencing the potential of the control electrode over a final control element for the purpose of maintaining the beam current measured by the diaphragm constant.

Abstract: Apparatus and method for engraving with an electron beam such that depressions of different sizes can be generated in the surface of a workpiece and the different sizes of depressions are produced by an electron beam and wherein during periods when depressions are not to be formed the electron beam remains on but is defocused so that it does not form depressions. A modification of the invention provides that at times when the beam is not being used to cut depressions that it is pulsed wherein the short pulses of the beam which engage the work surface do not do any cutting.

Abstract: An orifice for coupling a highly-evacuated electron beam gun to a rotating print form cylinder for engraving is provided such that the gun has a rigid cover with an opening for the electron beam at its end facing the print form cylinder and a flexible band is arranged at the cover which partially surrounds the print form cylinder. The band is pivoted at the cover and at least one of the pivot points is elastically designed and pivoting occurs with the aid of springs which are adjustable with respect to the spring force.