Dampening unit for an offset printing machine

Details Dampening unit for an offset printing machine Dampening unit for an offset printing machine

1988-06-27

1992-04-07

Eickholt, Eugene H.

Printing

Planographic

Dampeners

101348, 101DIG38, 29115, B41L 2300, B41F 146

Patent

active

051017245

ABSTRACT:
Dampening unit for an offset printing machine includes a metering roller, a dampening form roller for applying dampening medium to a plate cylinder of the printing machine, the metering roller and the form roller being in mutually pressing engagement at a contact zone along respective axially parallel lines on respective casings of the rollers, a drive for rotating the metering roller and the form rolelr with circumferential speeds which are substantially in a downward direction in vicinity of the contact zone, a storage space for dampening medium located above the contact zone and defined by surfaces of the casings of the metering roller and the form roller and sealing elements located at respective ends of the metering roller and the form roller, and a traversing distributor roller disposed in direct friction contact with the metering roller.

REFERENCES:
patent: 20090 (1858-04-01), Reynolds
patent: 677821 (1901-07-01), Tily et al.
patent: 916432 (1910-03-01), Ford
patent: 996827 (1911-07-01), Beadle
patent: 2126768 (1938-08-01), Goedike
patent: 3106154 (1963-10-01), Saul
patent: 3280733 (1966-10-01), Jurny
patent: 3625148 (1971-12-01), Muselik et al.
patent: 3769909 (1973-11-01), Fugmau et al.
patent: 4332195 (1982-06-01), Mizumura
patent: 4455938 (1984-06-01), Loudon

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