Method of and a circuit for metering ink in rotary printing mach

Details Method of and a circuit for metering ink in rotary printing mach Method of and a circuit for metering ink in rotary printing mach

1988-06-30

1989-09-19

Fisher, J. Reed

Printing

Inkers

Roller

101484, B41F 3106, B41F 3310, B41L 2708

Patent

active

048670626

ABSTRACT:
An ink metering method for an inking mechanism of a rotary printing machine having an ink fountain, a doctor roller, a separate electric motor for driving the doctor roller and a low speed of rotation relative to the printing machine, includes the selection of a rate at which the electric motor imparts to the doctor roller discrete angular motions; and selecting by a second selector switch the magnitude of the angular motions. A circuit arrangement for carrying out the method includes a time selection unit which delivers at its output a series of pulses at a desired rate; an increment evaluation unit which receives at its input a number of pulses corresponding to the magnitude of the angular motion performed by the electric motor and compares the momentary number with a preset desired number corresponding to a desired magnitude of the angle of rotation.

REFERENCES:
patent: 4765241 (1988-08-01), Hank et al.

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