Separable liquid droplet instrument and piezoelectric drivers th

Details Separable liquid droplet instrument and piezoelectric drivers th Separable liquid droplet instrument and piezoelectric drivers th

1977-02-14

1978-09-19

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310328, G01D 1518, H01L 4110

Patent

active

041157893

ABSTRACT:
An ink jet assembly comprises a piezoelectric driver and a liquid droplet instrument. The driver includes a plurality of piezoelectric members, which may be selectively energized. The instrument includes an elastic diaphragm means, which forms an outer wall of each of a plurality of chambers. The piezoelectric members are in operative engagement with the wall means to normally place a stress on the wall tending to decrease the volume of each chamber. When a piezoelectric member is actuated, the corresponding wall means deforms to decrease the volume of its particular chamber to increase the pressure therein to express a liquid droplet therefrom. The driver and instrument are releasably secured to each other to permit replacement of the instrument without disposing the driver.

REFERENCES:
patent: 3747120 (1973-07-01), Stemme
patent: 3848118 (1974-11-01), Rittberg
patent: 3852773 (1974-12-01), Sicking et al.
patent: 3864685 (1975-02-01), Fischbeck
patent: 3930260 (1975-12-01), Sicking
patent: 4057807 (1977-11-01), Fischbeck et al.

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