Offset web-fed rotary printing machine

Details Offset web-fed rotary printing machine Offset web-fed rotary printing machine

1986-11-14

1988-02-16

Fisher, J. Reed

Printing

Antismut device

Anti-offset material application

101181, B41F 506

Patent

active

047247630

ABSTRACT:
An offset web-fed rotary printing machine having a plurality of in line printing couples generates torsionsal oscillations. These torsional oscillations are damped by applying a counteracting torsional moment to a free end of drive shaft assembly for the printing couples. The magnitude of the counteracting torsional moment is determined in response to the magnitude of the torsional oscillation moment which is measured by a torque measuring shaft. Damping of the torsional oscillation improves printing quality and press operational speed.

REFERENCES:
patent: 2647965 (1953-08-01), Michie
patent: 3934459 (1976-01-01), Wolfinger et al.

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