Droplet jet apparatus

Details Droplet jet apparatus Droplet jet apparatus

1993-11-17

1996-03-26

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2045

Patent

active

055024726

ABSTRACT:
A droplet jet apparatus using an actuator serves as an electromechanical transducer that acts as an energy generator used for the ejection of droplets. The actuator has a plurality of grooves and walls made of piezoelectric material that define liquid channels and pressure chambers. Drive electrodes are formed on both sides of each wall. The drive electrodes formed on both sides of each piezoelectric wall fall within an electrode depth range of .+-.30% or less with respect to a set value of an electrode depth d extending in the wall height direction. Thus, the droplets can be stably jetted for a long period of time by setting the electrode depth to a proper value.

REFERENCES:
patent: 4879568 (1989-11-01), Bartky et al.
patent: 4887100 (1989-12-01), Michaelis et al.
patent: 5016028 (1991-05-01), Temple
patent: 5248998 (1993-09-01), Ochiai et al.
patent: 5252994 (1993-10-01), Narita et al.

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