Ink duct for offset or letterpress printing machines

Details Ink duct for offset or letterpress printing machines Ink duct for offset or letterpress printing machines

1993-12-13

1995-04-25

Fisher, J. Reed

Printing

Inkers

Fountains

B41F 3104, B41F 3106

Patent

active

054089298

ABSTRACT:
Ink duct for offset or letterpress printing machines having an ink-metering device by which a respective ink gap is adjustable zonewise in axial direction of an ink-duct roller, wherein the ink-metering device includes metering elements and an elastic foil covering the metering elements, the metering elements having a region of supporting webs and being pressable against the ink-duct roller through the intermediary of the elastic foil, a foil-holding device for holding the elastic foil so that it is displaceable tangentially with respect to the ink-duct roller in a given feeding direction, and a motor-driven actuating device connected to the foil-holding device for continuously feeding the elastic foil in the given feeding direction, the elastic foil being formed with low-wear zones extending in the given feeding direction of the elastic foil and covering the region of supporting webs of the metering elements.

REFERENCES:
patent: 4242958 (1981-01-01), Jeschke
patent: 4480547 (1984-11-01), Jeschke et al.
patent: 4495864 (1985-01-01), Junghans
patent: 4729312 (1988-03-01), Rodi et al.

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