Inking system for a printing machine, particularly of the offset

Details Inking system for a printing machine, particularly of the offset Inking system for a printing machine, particularly of the offset

1979-12-26

1981-09-22

Fisher, J. Reed

Printing

Inkers

Roller

101363, 101364, 101DIG24, B41F 3106, B41F 3126, B41L 2708

Patent

active

042903629

ABSTRACT:
Ink is picked up by an ink roller which has a surface characterized as consisting of a foamed plastic with pores open at the outer circumference but not interconnected. The ink roller dips into ink within an ink trough. The ink being applied to the ink roller is controlled by stripping elements formed as rollers which are pressed with controllable force against the surface of the ink pick-up roller; the force can be controlled, for example, by pneumatic or hydraulic fluid means, such as pressure piston-cylinder arrangements, blow-up pillows, or fluid pressure being applied against the roller mechanism directly; or by mechanical means, such as by a spring suspension in which the attachment points of the springs are selectively positionable. Preferably, the stripping rollers are about 1/15 or less of the diameter of the ink pick-up roller, and driven at a circumferential speed which is slow with respect to that of the ink pick-up roller. Ink can be transferred directly to a printing plate cylinder, or to ink transfer rollers. Both the ink pick-up roller and the stripping roller, preferably, are axially oscillating.

REFERENCES:
patent: 2162248 (1939-06-01), Delaplane
patent: 2560572 (1951-07-01), Haywood et al.
patent: 2676563 (1954-04-01), Montgomery et al.
patent: 2729192 (1956-01-01), Warner
patent: 2970564 (1961-02-01), Warner
patent: 3245377 (1966-04-01), Gettel
patent: 3559572 (1971-02-01), Hackley
patent: 3797388 (1974-03-01), Kaminstein
patent: 3923936 (1975-12-01), Davis et al.
patent: 4211167 (1980-07-01), Corse

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