Ink jet printer drive pulse for elimination of multiple ink drop

Details Ink jet printer drive pulse for elimination of multiple ink drop Ink jet printer drive pulse for elimination of multiple ink drop

1980-12-08

1983-01-18

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310317, G01D 1516

Patent

active

043694551

ABSTRACT:
The electrical drive pulse applied to the piezoelectric crystal of an ink jet printer is designed to cause ejection of a single desired ink droplet from the print head and to preclude ejection of unwanted multiple ink droplets. The drive pulse consists of the superposition of two waveforms wherein the first waveform causes ejection of the desired ink droplet and the superimposed second waveform removes energy from the print head so that mechanical ringing of the ink supply within the print head does not cause ejection of unwanted ink droplets.

REFERENCES:
patent: 4104646 (1978-08-01), Fischbeck
patent: 4112433 (1978-09-01), Vernon
patent: 4266232 (1981-05-01), Juliana
patent: 4291316 (1981-09-01), Kakeno

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