Acoustic microstreaming in an ink jet apparatus

Details Acoustic microstreaming in an ink jet apparatus Acoustic microstreaming in an ink jet apparatus

1989-03-30

1990-11-27

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, B41J 2045

Patent

active

049739808

ABSTRACT:
An ink jet apparatus having a scanning head employing at least one ink jet with a variable volume chamber which includes an ink droplet ejecting orifice, and a transducer, having a length mode resonant frequency, adapted to expand and contract along an axis of elongation in response to an electric field substantially transverse to the axis of elongation for ejection of droplets on demand from the ink droplet ejecting orifice is acoustically microstreamed by exciting the transducers during non-printing periods to eliminate start-up problems and to maintain pigments or other particles in dispersion within the ink.

REFERENCES:
patent: 4459599 (1984-07-01), Ort
patent: 4459601 (1984-07-01), Howkins
patent: 4492968 (1985-01-01), Lee
patent: 4563688 (1986-01-01), Braun
Brownlow et al.; Ink on Demand Using Silicon Nozzles, IBM TDB., vol. 19, No. 6, Nov. 1976, pp. 2255-2256.
vonGotfield, R. J.; Anticlogging Ink Jet Nozzle Chamber, IBM TDB, vol. 17, No. 6, Nov. 1974, p. 1802.
Moss, J. D.; Noncontinuous Dither Excitation of DOD Ink Jet Printer, IBM TDB, vol. 27, No. 1B, Jun. 1984, pp. 837-838.

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