Dr. Ing. Rudolf Hell Gmbh

Heidelberger Druckmaschinen Ag

Firma Dr. -ing. Rudolf Hell Gmbh

Rolf Angelbeck

Reinhard Gesell

Rudiger Sommer

Hans Penza

Helmut Greve

Matthias Goessner

Ulrich Henke

Engraving machine

Pressure-tight vacuum chamber of an electron beam engraving machine for

Offset printing plates are usually supplied from the manufacturer as a plate stack with intermediate paper layers. For further processing, the plate stack is placed in a magazine cassette. A suction plate lifts a top plate off from the stack and, after removal of the intermediate paper layer by means of blowing air, conducts it for further processing. Also by means of blowing air, the respective upper plates of the remaining stack are isolated, so that they no longer firmly adhere to the stack. Undesired dislocations of the plates thus arising are mechanically corrected.

Apparatus for isolating offset printing plates and removing intermediate

There is disclosed herein a bearing for highprecision transport spindles used in machines for electrical reproduction technology, machine tools, measuring installations and the like, wherein axial movement due to bearing tolerances are eliminated by the bearing device of this invention. The radial and axial bearing of the spindle are decoupled from one another by means of the bearing device, thereby eliminating the axial dislocation errors.

Bearing device for threaded spindles

A recording device for use in electrostatic reproduction of an image on a recording medium includes a support, two carrier plates juxtaposed relative to each other on the support, covers for the carrier plates, a row of electrodes near one side of each carrier plate, supply leads for the electrodes near each carrier plate on its other side, a plurality of counter electrodes spaced apart from the electrodes, and an insulating layer between the carrier plates. The electrodes and counter electrodes define a gap adapted for the passage of the recording medium.

Recording electrode assembly for use in electrostatic reproduction

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Kiel, Germany

Rolf Angelbeck