| 摘要 |
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.
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