Dampening-inking unit for offset printing machines

Details Dampening-inking unit for offset printing machines Dampening-inking unit for offset printing machines

1982-11-19

1984-04-03

Fisher, J. Reed

Printing

Planographic

Dampeners

101350, B41F 736, B41F 740, B41L 2514

Patent

active

044400810

ABSTRACT:
Dampening-inking unit for offset printing machines for forming and feeding an ink-water emulsion to a plate cylinder including a first and a second distributor roller, two inking rollers disposed between the first and second distributor rollers and connected to one another by an intermediate roller, the first distributor roller being a dampening-medium distributor roller in contact with one of the two inking rollers at a given contact location, means for driving the dampening-medium distributor roller, a fountain roller dipping into a dampening-medium tank, and a metering roller engageable with the fountain roller, the metering roller being also engageable with the one of the two inking rollers at a given contact location, the contact location of the metering roller and the one inking roller being upstream of the contact location of the dampening-medium distributor roller and the one inking roller, as viewed in direction of rotation of the one inking roller, the dampening-medium distributor roller having a rough chromium outer cylindrical surface for driving the first inking roller and for intensively working-in dampening medium applied to the one inking roller into an ink film disposed therebeneath on the one inking roller.

REFERENCES:
patent: 3673959 (1972-07-01), Jezuit et al.
patent: 3769909 (1973-11-01), Fugman et al.
patent: 3842735 (1974-10-01), Southam et al.
patent: 3926116 (1975-12-01), Wildeman
patent: 4237785 (1980-12-01), Dahlgren
patent: 4351236 (1982-09-01), Beisel et al.

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