Ink level control system for offset printing presses

Details Ink level control system for offset printing presses Ink level control system for offset printing presses

1990-05-29

1992-04-14

Fisher, J. Reed

Printing

Inkers

Fountains

101484, B41F 3106, B41F 3108

Patent

active

051037289

ABSTRACT:
An apparatus for monitoring and controlling the level of the ink in the ink fountain of offset printing presses, using an ultrasonic transducer for measuring the distance between the ink and the transducer which includes a microprocessor system for calculating a time duration of an ink feed cycle to fill the ink fountain to a preset ink level and for generating an ink cycle control signal based on time duration data and ink viscosity characteristics. A control valve activated by the ink cycle control signal delivers ink to the ink fountain.

REFERENCES:
patent: 3025798 (1962-03-01), Coberly et al.
patent: 3373052 (1968-03-01), Rode
patent: 3848529 (1974-11-01), Gegenheimer et al.
patent: 4010683 (1977-03-01), Lambert et al.
patent: 4479433 (1984-10-01), MacPhee et al.
patent: 4853901 (1989-08-01), Barber
patent: 4890266 (1989-12-01), Woodward

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