Wetting/inking mechanism for offset printing presses

Details Wetting/inking mechanism for offset printing presses Wetting/inking mechanism for offset printing presses

1988-12-22

1990-05-08

Fisher, J. Reed

Printing

Planographic

Dampeners

101350, B41F 726, B41F 740, B41F 3130

Patent

active

049228188

ABSTRACT:
In general, the invention features a mechanism for applying a wetting agent or ink in a printing press, the printing press including a plate cylinder, an ink reservoir and an ink transfer apparatus for transferring the ink from the ink reservoir to the plate cylinder, the ink transfer apparatus including at least a first applicator roller which receives ink from the ink reservoir, the first applicator roller being in contact with the plate cylinder, and a distributor roller, the mechanism including a second applicator roller, a wetting agent reservoir, a wetting agent transfer apparatus for transferring the wetting agent from the wetting agent reservoir to the second applicator roller, and a selective shifting apparatus for selectively shifting the second applicator roller between a first position wherein it contacts both the plate cylinder and the distributor roller and a second position wherein it contacts the plate cylinder but is not in contact with the distributor roller.

REFERENCES:
patent: 3688694 (1972-09-01), Preuss et al.
patent: 3749011 (1973-07-01), Abendroth et al.
patent: 3983812 (1976-10-01), Schramm
patent: 4290360 (1981-09-01), Fischer
patent: 4440081 (1984-04-01), Beisel
patent: 4481882 (1984-11-01), Rudolph
patent: 4524690 (1985-06-01), Omori
patent: 4660470 (1987-04-01), Kramp et al.
patent: 4711172 (1987-12-01), Capdebosc

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