Apparatus and method for regulating ink distribution in a printi

Details Apparatus and method for regulating ink distribution in a printi Apparatus and method for regulating ink distribution in a printi

1997-09-09

1998-07-28

Fisher, J. Reed

Printing

Inkers

Roller

101485, 101DIG32, B41F 3106, B41F 3114

Patent

active

057849609

ABSTRACT:
An undershot inking unit for a printing machine and a method for regulating ink distribution in a printing machine are disclosed. The undershot inking unit comprises an ink fountain roller communicating with an ink fountain, an inking roller, and an intermittent ductor roller for transferring ink from the ink fountain roller to the inking roller. In accordance with the present invention, the ductor roller is thrown onto the ink fountain roller at a rate that is independent of the printing speed of the printing machine, preferably, at a rate that is constant for all printing speeds. The disclosed apparatus and method alleviate the problem of ink fall-off in printing machines.

REFERENCES:
patent: 3013489 (1961-12-01), Moser et al.
patent: 5493970 (1996-02-01), Stoffler et al.

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