Liquid-jet head and liquid-jet apparatus

Details Liquid-jet head and liquid-jet apparatus Liquid-jet head and liquid-jet apparatus

2005-01-11

2005-01-11

Brooke, Michael S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06840601

ABSTRACT:
Disclosed are a liquid-jet recording head and a liquid-jet recording apparatus, which are capable of retaining a fine liquid ejecting characteristic and obtaining a stable liquid ejecting characteristic. The liquid-jet recording head, which is provided with a passage-forming substrate formed with pressure generating chambers12to communicate with nozzle orifices, and piezoelectric elements provided on one side of the passage-forming substrate through a vibration plate to generate pressure changes inside the pressure generating chambers, includes an insulation layer continuously provided at least in a region opposing to the vicinity of longitudinal end portions of the piezoelectric elements along a direction of arrangement of the piezoelectric elements, the insulation layer also having a penetrated portion in a region opposing to a common electrode provided in common to the plurality of piezoelectric elements, and a connective wiring layer continuously provided on the insulation layer to be electrically connected to the common electrode via the penetrated portion. Accordingly, a resistance value of the common electrode is substantially reduced.

REFERENCES:
patent: 5984459 (1999-11-01), Takahashi et al.
patent: 6416680 (2002-07-01), Mitsuzawa et al.
patent: 05286131 (1993-11-01), None

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