Abstract: The invention relates to a method for recording images with a light microscope, wherein a specimen container with a specimen is arranged on a specimen holder of the light microscope, and wherein illuminating light is guided onto the specimen. The illuminating light can hereby be cut in a cross-section transversely to an optical axis of the light microscope through a wall of the specimen container to a limited cross-sectional region. First and second diaphragm settings are determined and set, for the limited cross-sectional region of the illuminating light defined by the wall of the specimen container, in which the diaphragm covers equal sized portions of the limited cross-sectional region. In addition the invention relates to a light microscope which is adapted in particular to carry out the method.

Abstract: The invention relates to a method for recording images with a light microscope, wherein a specimen container with a specimen is arranged on a specimen holder of the light microscope, and wherein illuminating light is guided onto the specimen. The illuminating light can hereby be cut in a cross-section transversely to an optical axis of the light microscope through a wall of the specimen container to a limited cross-sectional region. First and second diaphragm settings are determined and set, for the limited cross-sectional region of the illuminating light defined by the wall of the specimen container, in which the diaphragm covers equal sized portions of the limited cross-sectional region. In addition the invention relates to a light microscope which is adapted in particular to carry out the method.

Abstract: A transmitted-light microscope for imaging well-shaped, liquid-containing sample vessels, wherein the transmitted-light microscope has an illumination beam path for illuminating the sample vessel with an illumination beam bundle, from above, along an optical axis, wherein the illumination beam path has an illuminating element aligned to the optical axis, which element irradiates the illumination beam bundle onto the sample vessel, an imaging beam path for imaging the sample vessel from below along the optical axis and a pipette access channel for introducing a reagent into the sample vessel, wherein the illuminating element is annular and has an opening on the optical axis through which opening runs the pipette access channel.

Abstract: A transmitted-light microscope for imaging well-shaped, liquid-containing sample vessels, wherein the transmitted-light microscope has an illumination beam path for illuminating the sample vessel with an illumination beam bundle, from above, along an optical axis, wherein the illumination beam path has an illuminating element aligned to the optical axis, which element irradiates the illumination beam bundle onto the sample vessel, an imaging beam path for imaging the sample vessel from below along the optical axis and a pipette access channel for introducing a reagent into the sample vessel, wherein the illuminating element is annular and has an opening on the optical axis through which opening runs the pipette access channel.

Abstract: A method for microscope imaging of a sample, wherein a sample well is filled with liquid with the sample adhered to the bottom, illuminating and imaging the sample well from the underside and capturing at least one sample image thereof, wherein any inhomogeneity of the illumination is equalized by providing a test well with the same structure filled with liquid but no sample, making a reference measurement of the test well by illuminating the test well, imaging the illuminated test well from the underside and capturing a reference image which covers the entire bottom, analyzing the reference image to determine a brightness correction specification based on brightness fluctuation, and using the brightness correction specification to correct the sample image, including determining a position of at least a part of the sample image and using a value of the brightness correction specification assigned to the position.

Abstract: A method for fluorescence microscopy of a sample. The method includes illuminating the sample with excitation radiation of a microscope through an illumination beam path and imaging along an optical axis to an image field on a camera chip, the illumination beam path having an adjustable diaphragm for selective illumination of a target area; selecting an area on the sample as a target area; and adjusting an adjustable diaphragm for selective illumination of the target area such that parts of the sample lying outside of the selected area are not illuminated with excitation radiation.

Abstract: The invention relates to a method for recording images with a light microscope, wherein a specimen container with a specimen is arranged on a specimen holder of the light microscope, and wherein illuminating light is guided onto the specimen. The illuminating light can hereby be cut in a cross-section transversely to an optical axis of the light microscope through a wall of the specimen container to a limited cross-sectional region. First and second diaphragm settings are determined and set, for the limited cross-sectional region of the illuminating light defined by the wall of the specimen container, in which the diaphragm covers equal sized portions of the limited cross-sectional region. In addition the invention relates to a light microscope which is adapted in particular to carry out the method.

Abstract: A device for filling a tubular casing with a pasty product comprising a stuffing horn, a brake which encircles the outside of the stuffing horn in the vicinity of the orifice thereof, and a coaxial, cylindrical support tube accommodating a tubular net, which support tube is arranged at a distance from the outside of the stuffing horn and extends over the length of the stuffing horn to an end in the vicinity of the orifice of the stuffing horn, the brake being located at said end of the support tube. The invention enables the tubular net to continuously applied to the tubular casing during the stuffing operation.

Abstract: The decoating device 21 comprises a spraying section 22, a heating zone 9, a cleaning station 23 and a gumming station 24. Containers 5a, 5b, 5c for various developing liquids are connected via a multiway valve 5 to one or more flat-jet nozzles 6 in the spraying section 22. A first sensor 4 registers the incoming printing plate 1 and actuates the multiway valve 5 in order to admit decoating liquid from one of connected containers 5a, 5b or 5c to the flat-jet nozzle(s) 6. The decoating liquid sprayed past the printing plate 1 is conveyed via a collecting trough 7 into a collecting container 8. The thin film of decoating liquid on the printing plate 1 is heated to the preselected temperature by means of the radiator 25 in the heating zone 9. A pair of squeezing rollers 11 cleans the printing plate surface. A second sensor 14 registers the front edge of the printing plate 1 and then switches on the cleaning station 23 and gumming station 24 known per se.

Abstract: Printing forms or metallized images can be prepared electrophotographically by a process comprising the electrostatic chargeup, imagewise exposure and tonering of a photoconductor layer applied to an electroconductive base material, followed by fixing of the tonered image areas, removal of the photoconductive layer in the non-image areas by decoating and, where appropriate, etching of the bared base material surface. A recording material is used that comprises a photoconductive layer containing at least one organic n-conducting pigment in a concentration between 10 and 50 percent by weight and an organic p-conducting photoconductor in a concentration of 0 to 20 percent by weight, based on the layer weight, together with a binder which is soluble or dispersible in aqueous-alkaline solution. The decoating is carried out with an aqueous-alkaline decoater solution, which preferably contains alkali metal hydroxides and/or phosphates.

Abstract: Disclosed is a device for the electrophotographic manufacture of printing forms, comprising a loading table, an exposure table and a developing table arranged in the device one after the other in the transport direction A of printing plates. The loading table is pivotable and is equipped with spring suction devices, by means of which the uppermost printing plate can be removed from a plate magazine. After the printing plate has been removed, the loading table is swung into its horizontal position, a corona is moved over the loading table and the photoconductive layer of the printing plate is loaded to the required voltage. The printing plate is transported from the loading table to the exposure table and from the latter to the developing table by means of compressed air which forms a cushion underneath the printing plate. The printing plate is guided on the cushion in suspension from processing station to procesing station.

Abstract: Disclosed is a liquid developer device for a recording material which comprises at least one conveying device for applying a liquid developer to the recording material and a developer electrode attached to the conveying device in a manner such that the electrode floats on the developer layer at a constant distance from the recording material. In a further embodiment, the recording material, which has a latent electrostatic image on both its surfaces, is passed vertically between conveying devices. Also disclosed is a process for using both devices.

Abstract: The present invention relates to a suction device for securely holding printing plates in a processing position by sub-atmospheric pressure. The suction device comprises a turnstile arrangement with four suction tables in two mutually perpendicular planes and is connected to a motor which rotates the turnstile arrangement in 90.degree. steps. Four suction chambers are located in a hub part of the turnstile arrangement, these chambers being connected, via pressure lines, to a vacuum source for generating sub-atmospheric pressure. The supporting surface of each suction table comprises suction slots, which communicate in pairs, each of these communicating pairs of suction slots being connected to the associated suction chamber via a common suction passage. Each suction chamber comprises a piston with its piston rod being guided outwardly through an end face of the hub part and carrying a circular plate.

Abstract: An original holder for a printing plate processing apparatus for rapid exchange of an original in a vacuum frame covered by a glass plate and exposed in the exposure device of a printing plate processing apparatus. The glass plate is held in its open position by a gas pressure element to facilitate insertion of the original. Two U-shaped metal sheets serve as supports for two vacuum frames which are each evacuated following insertion of an original and closing of the glass cover plate. Swivel joints are attached at the sides of the supports which enable the original holder to be pivoted through an angle of 360.degree. and which are additionally horizontally slidable in the guides of supporting and guiding arms. The vacuum frames are individually pivotably mounted in their supports by ball guides in guide tracks.

Abstract: An electrophotographic apparatus for producing printing masters utilizing modulated laser light as the exposure source and a continuous process for producing such printing masters involving the steps of plate conveyance, synchronous charging and exposure, and electrostatic development and fusing of electrophotographic printing masters suitable for use in offset or lithographic printing processes. The apparatus comprises a transport system for sequentially conveying printing masters to the exposure platen which retains the masters in a fixed plane for synchronous charging and exposure, utilizing as a light source, a modulated laser beam. The optical and deflecting components of the exposure system are mounted in a moveable carriage member adapted to traverse a plane substantially parallel to the plane of the exposure platen such that the exposure laser will raster scan the platen area.