Device for ink profile-dependent regulation dampening solution

Details Device for ink profile-dependent regulation dampening solution Device for ink profile-dependent regulation dampening solution

1983-06-02

1984-12-04

Fisher, J. Reed

Printing

Planographic

Dampeners

101365, B41F 730, B41F 736, B41L 2506

Patent

active

044857373

ABSTRACT:
Device for ink profile-dependent regulation of dampening solution in an offset printing unit having an inking-dampening unit which, over the width of a type form, supplies a dampening solution film of substantially uniform thickness to the plate cylinder and to the inking part of the inking-dampening unit, including a hydrophilic measuring roller in contact with one of a plurality of inking unit rollers; a measuring device disposed in vicinity of the measuring roller for determining extent of wetting of an outer cylindrical surface of the measuring roller section-by-section over the entire width of the measuring roller and for transmitting corresponding signals; means for varying the proportion of the dampening solution in the ink film section-by-section; and a control stage for converting the signals from the measuring device into adjustment commands and applying them to the proportion varying means for varying section-by-section the proportion of dampening solution in the ink film.

REFERENCES:
patent: 3134326 (1964-05-01), Davis
patent: 3822643 (1974-07-01), Mikan

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