Ink injection type writing system using amplitude-modulated elec

Details Ink injection type writing system using amplitude-modulated elec Ink injection type writing system using amplitude-modulated elec

1976-04-02

1978-02-07

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

358280, 358296, G01G 1518

Patent

active

040729583

ABSTRACT:
An ink ejection system of the invention includes an electrical circuit generating sinusoidal wave pulses and a liquid applying unit operable to discharge the liquid in pulsed jets in response to the sinusoidal wave pulses. The circuit comprises means for generating a sinusoidal signal of constant amplitude and frequency higher than the highest instantaneous frequency of a video signal, and means for modulating the amplitude of the sinusoidal signal in accordance with the video signal to generate a signal containing no harmonic components.

REFERENCES:
patent: 2512743 (1950-06-01), Hansell
patent: 3249690 (1966-05-01), Schubert
patent: 3747120 (1973-07-01), Stemme
patent: 3828357 (1974-08-01), Koeblitz

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