Printing – Rolling contact machines – Rotary
Patent
1990-07-20
1991-08-20
Fisher, J. Reed
Printing
Rolling contact machines
Rotary
101365, B41F 3104, B41F 3106, B41F 3316
Patent
active
050404598
ABSTRACT:
Device for metering a quantity of ink in an offset printing machine having a plate cylinder and ink applicator cylinder engaging the plate cylinder and having a diameter corresponding to that of the plate cylinder, including an ink cylinder having a cylindrical outer surface formed of rigid material, at least one metering member cooperatively engageable with the ink cylinder under a given pressure, the metering member having a metering surface extending axially parallel with and tangentially to the cylindrical outer surface of the ink cylinder, and stationary bearing means for supporting the metering member through the intermediary of an adjusting element responsive to pressure from a pressure-medium for varying an ink gap between the metering surface and the ink cylinder outer surface, and means for supplying pressure medium to the adjusting element including a device for varying the pressure of the pressure medium as a function of time in accordance with a respective ink consumption within a printing period.
REFERENCES:
patent: 3958509 (1976-05-01), Murray et al.
patent: 4211167 (1980-07-01), Corse
patent: 4223603 (1980-09-01), Faddis et al.
patent: 4452139 (1984-06-01), Dahlgren
Fisher J. Reed
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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