Drop jet apparatus

Details Drop jet apparatus Drop jet apparatus

1981-07-06

1982-12-14

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1518

Patent

active

043640702

ABSTRACT:
A drop jet apparatus has a nozzle head which defines a pressure chamber, a nozzle, and passages. Part of the pressure chamber is defined by a thin diaphragm which is made thick at the central and at a surrounding portion spaced from the central portion. A piezoelectric plate is adhered to the thick portions so as to bridge the thin portion between the projections.

REFERENCES:
patent: 4189734 (1980-02-01), Kyser

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