Printing – Planographic – Rotary machines
Patent
1975-02-04
1979-05-01
Suter, Ronald E.
Printing
Planographic
Rotary machines
101148, 101350, B41F 704, B41F 732
Patent
active
041517962
ABSTRACT:
A method of automatically controlling deviations in the liquid ink and dampening liquid feed in an offset printing press includes irradiating a layer formed of liquid ink and ingredients of a dampening liquid deposited on a plate cylinder of the press with at least one source of radiation, selectively interposing, in the radiation path between the radiation source and the irradiated liquid layer, wave length absorption filters, selecting certain wavelengths most heavily absorbed by at least one of the liquids, comparing measured values for the ink layer and the individual ingredients of the dampening liquid with a given nominal value and, in accordance with a quantitative deviation between the measured and the nominal values, automatically actuating a control circuit for regulating the feed of the liquid ink and the dampening liquid; and a device for carrying out the foregoing method.
REFERENCES:
patent: 2969016 (1961-01-01), Crosfield et al.
patent: 3185024 (1965-05-01), McCreanor
patent: 3185088 (1965-05-01), Norton
patent: 3234871 (1966-02-01), Ostwald
patent: 3439175 (1969-04-01), Kammuller et al.
patent: 3707123 (1972-12-01), Heasman
patent: 3835777 (1974-09-01), Krygeris
Heidelberger Druckmaschinen Aktiengesellschaft
Lerner Herbert L.
Suter Ronald E.
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