Device for smoothing a sheet on an impression cylinder of a shee

Details Device for smoothing a sheet on an impression cylinder of a shee Device for smoothing a sheet on an impression cylinder of a shee

1990-06-22

1992-02-11

Eickholt, Eugene H.

Printing

Work supporting members

Grippers

271195, 226 95, B41F 130

Patent

active

050866982

ABSTRACT:
A device for smoothly applying a sheet for printing onto an impression cylinder upstream of a printing gap of a sheet-fed rotary offset printing machine in travel direction of the sheet through the printing machine and including at least one jet nozzle capable of being directed towards the circumference of the impression cylinder for pressing the sheet by blowing air force against the circumference, comprising drive means for swingingly reciprocating the jet nozzle in travel direction of the sheet during an operating cycle of the printing machine, the jet nozzle being mounted at a spaced distance and upstream from a printing gap and being swingable in a pendular manner about a pendulum axis extending parallel to an axis of the impression cylinder, the jet nozzle being couplable with the drive means.

REFERENCES:
patent: 2764408 (1956-09-01), Weiler
patent: 4060238 (1977-11-01), Simeth
patent: 4395949 (1983-08-01), Jeschke

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