Drive for a printing machine

Details Drive for a printing machine Drive for a printing machine

1997-06-11

1999-07-20

Bennett, Christopher A.

Printing

Multicolor

Rotary machines

101484, 101216, 101248, B41F 502

Patent

active

059243627

ABSTRACT:
A drive system for a sheet-fed offset printing press in which one or more cylinders are motor-driven in accordance with a prescribed desired position. According to the invention, a correction device receives measured angular position values of the cylinder from a rotational position sensor. The correction device then converts the measured position values into modified position values which are then sent to the drive controller. The drive controller compares the modified position values with desired cylinder position values and controls the motor so as to correct any deviation between the values. The correction device allows modification of the measured signals as needed to compensate for known or determinable parameters. A drive according to the present invention provides precise driving control, while reducing the required assembly and manufacturing accuracy of components such as the angle position sensor, and while compensating for other errors in drives.

REFERENCES:
patent: 5309834 (1994-05-01), Koch
patent: 5481971 (1996-01-01), Grutzmacher et al.
patent: 5596931 (1997-01-01), Rossler et al.
patent: 5615609 (1997-04-01), Hill et al.
patent: 5682818 (1997-11-01), Braun et al.

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