Ink jet recording device with pressure chamber having an active

Details Ink jet recording device with pressure chamber having an active Ink jet recording device with pressure chamber having an active

1995-11-13

1998-03-17

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 72, 310328, B41J 21045, H01L 4104

Patent

active

057292647

ABSTRACT:
An ink jet recording device includes an ink jet recording head comprising at least one pressure chamber communicating with an ink reservoir via an ink supply channel and a nozzle plate comprising at least one nozzle opening for emitting droplets of ink, the nozzle plate forms a wall of the pressure chamber. The recording head further comprises a piezoelectric actuator element having an active direction and comprising at least one layer of piezoelectric material and at least two electrode layers which are arranged such that the dimension of the actuator element in the active direction is varied upon application of an electric voltage between terminals that are electrically connected to the electrode layers. The actuator element is arranged in cooperative relationship with the pressure chamber so that the pressure chamber changes its volume when the dimension of the actuator element in the active direction is varied. The piezoelectric actuator element is formed as an actuator plate, its active direction coinciding with the direction of the thickness of the actuator plate, and a recess is provided in the actuator plate to form the pressure chamber.

REFERENCES:
patent: 3946398 (1976-03-01), Kyser et al.
patent: 5311219 (1994-05-01), Ochiai et al.
patent: 5359350 (1994-10-01), Nakano et al.
patent: 5453767 (1995-09-01), Chang et al.
patent: 5475407 (1995-12-01), Ohashi

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