Liquid jet head and liquid jet apparatus

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

2006-12-26

2006-12-26

Do, An H. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S071000

Reexamination Certificate

active

07152963

ABSTRACT:
A liquid jet head includes: a passage-forming substrate provided with at least two rows of pressure generating chambers each communicating with a nozzle orifice; and piezoelectric elements for causing pressure change in the pressure generating chambers. The piezoelectric elements are provided on one side of the passage-forming substrate with a vibration plate interposed therebetween. On a joint plate joined to the piezoelectric element side of the passage-forming substrate, driving ICs for driving the piezoelectric elements are provided in regions facing the respective rows of the pressure generating chambers. For each row of the pressure generating chambers, at least one penetrated hole, in which lead electrodes led from the piezoelectric elements are exposed, is provided in a region of the joint plate, the region corresponding to a region between the rows of the pressure generating chambers. A beam portion is formed between the adjacent penetrated holes.

REFERENCES:
patent: 6505919 (2003-01-01), Mizutani
patent: 6796640 (2004-09-01), Miyata
patent: 6808254 (2004-10-01), Sakaida et al.
patent: 5-286131 (1993-11-01), None
patent: 2000-351208 (2000-12-01), None
patent: 2003-80703 (2003-03-01), None
patent: 2003-127365 (2003-05-01), None
patent: 2003-136734 (2003-05-01), None

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