Printing – Rolling contact machines – Rotary
Patent
1995-07-11
1997-11-04
Bennett, Christopher A.
Printing
Rolling contact machines
Rotary
101216, B41F 1324
Patent
active
056828187
ABSTRACT:
A drive for a printer includes a printing roller which is driven by a step motor located at one axial end of the roller. A monitoring unit for the printing roller is disposed at the other axial end of the roller and comprises a belt which is mounted on two guide rollers. The rotational axes of the guide rollers are parallel to the rotational axis of the printing roller. The outer surface of the belt frictionally engages a portion of the peripheral surface of the printing roller so that the belt moves in response to rotation of the printing roller. One of the guide rollers for the belt drives a synchronizing disc having indicating elements which are sensed by a detector. The detector generates a synchronizing signal whenever an indicating element is detected, and the synchronizing signals are sent to a control unit. The control unit compares the synchronizing signals with reference signals and sends control signals to the motor when the synchronizing signals deviate from the reference signals.
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Patent Abstracts of Japan, M-1331 Oct. 27, 1992, vol. 16/No. 523.
Braun Paul-Wilhelm
Lehmann Herbert
Bennett Christopher A.
Ruhlatec Industrieprodukte GmbH
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