Robert Boschgmbh

Linotype-hell Ag

Ottokar Klein

Dieter Poetsch

Werner Becker

Rudolf Wulf

Photosetting apparatus, particularly a laser exposer, having a

An incremental rotary transmitter is proposed for mounting upon the free end of a shaft. The transmitter comprises a pulse disc rigidly secured to the shaft and a relatively stationary scanning disc freely mounted on the same shaft. The scanning disc is thus subject to the same flexing oscillations or errors in true running of the shaft as the pulse disc, so that measurement errors due to eccentric movements of the pulse disc are substantially reduced.

Incremental rotary transmitter

For the line-by-line optical scanning of a film as it passes at high speed through a scanning region, particularly to obtain television image signals, a light source directs light to a sensor. To reduce friction of the film adjacent the scanning region, two rollers or endless belts support the film at positions on the film outside the film frames. These rollers or belts replace the previously usual stationary film guide shoes adjacent the film gate. Lateral guidance of the film can be provided by rollers.

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Weiterstadt, Germany

Ottokar Klein