Method and device for adjusting a contact pressure between ink-c

Details Method and device for adjusting a contact pressure between ink-c Method and device for adjusting a contact pressure between ink-c

1994-08-24

1995-09-12

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

101352, 101485, B41F 3130, B41F 3300

Patent

active

054489490

ABSTRACT:
A contact pressure between ink-carrying cylinders of a printing machine are automatically adjusted. At least one ink-carrying cylinder can be disengaged from the ink-receiving cylinder. A width measuring device measures a width of a contact strip transferred from the ink-carrying cylinder to the ink-receiving cylinder. The measuring device may be aimed at the ink-receiving cylinder or at a product issuing from the last printing unit. A control or regulating device compares the signals which represent the width of the contact strip and, if necessary, adjusts the contact pressure. The adjustment may be parallel, i.e. the contact pressure is increased or decreased uniformly along the cylinder axis, or is may be one-sided, if the contact strip image is non-uniform or wedge-shaped.

REFERENCES:
patent: 3599889 (1971-08-01), Pfeiffer
patent: 4676094 (1987-06-01), Hoffman
patent: 4817883 (1989-04-01), Hoffman
Papier und Druck 35 (1986) 3, (Gruner et al.) "Uber den Einsatz eines mikroprozessorgesteuerten Me.beta.systems im .beta. Druckplattenwerk Berlin".

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