Ink jet print head

Details Ink jet print head Ink jet print head

1981-11-25

1984-04-17

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1518

Patent

active

044438079

ABSTRACT:
An ink jet print head for projecting droplets of ink on demand includes a pressurization chamber including at least one wall defining a vibratory plate. A nozzle is open to the pressurization chamber and defines a fluid passage through which ink is ejected. A piezoelectric element is operatively coupled to the vibratory plate which is selectively energized to vibrate the wall thereby changing the volume of the pressurization chamber to eject ink through the nozzle. A vibratory system is defined by the piezoelectric element and the vibratory plate with the acoustic capacitance of the vibratory system being less than or equal to 9.times.10.sup.-17 m.sup.5 /N.

REFERENCES:
patent: 4189734 (1980-02-01), Kyser et al.
patent: 4364066 (1982-12-01), Koto
patent: 4364067 (1982-12-01), Koto et al.

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