Inking and dampening mechanism for a reversible printing unit of

Details Inking and dampening mechanism for a reversible printing unit of Inking and dampening mechanism for a reversible printing unit of

1991-04-16

1992-02-25

Fisher, J. Reed

Printing

Planographic

Dampeners

101350, B41F 726, B41F 736, B41F 740

Patent

active

050903144

ABSTRACT:
A reversible printing unit is equipped with a central distributing roller (9), with which a first transfer cylinder (8) and a second transfer cylinder (12) can be engaged or disengaged independently from one another. A respective dampening mechanism (10) and (24) is associated with each of the transfer cylinders (8) and (12). Depending on the direction of rotation or the mode of operation of the printing unit, the transfer cylinders (8) or (12) and the rollers following them act as dampening rollers or inking rollers. Modes of operation with indirect dampening, pre-inking of the inking mechanism with feed of dampening agent, and rapid and thorough washing of the rollers of the inking and dampening mechanism are also possible due to the independent adjustment of the respective transfer cylinders (8) and (12).

REFERENCES:
patent: 3805700 (1974-04-01), Chambon
patent: 4690055 (1987-09-01), Fadner

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