Liquid-jet head and liquid-jet apparatus

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

2007-07-03

2007-07-03

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S328000, C310S366000, C347S070000

Reexamination Certificate

active

11334442

ABSTRACT:
A liquid-jet head is provided. In the liquid-jet head, a lower electrode, as a common electrode common to a plurality of piezoelectric elements, is continuously formed as far as an outer region opposite the piezoelectric elements, an auxiliary electrode layer is provided which comprises the same layers as layers constituting a lead-out electrode, and which is electrically connected to the lower electrode located outwardly of the region opposite the piezoelectric elements, a first insulation film at least in the vicinity of an end portion of a passage-forming substrate in a direction parallel to the arrangement of the piezoelectric elements is provided with a penetrated portion in a region opposite the auxiliary electrode layer, and the auxiliary electrode layer is in contact with the lower electrode via the penetrated portion provided in the first insulation film.

REFERENCES:
patent: 4115789 (1978-09-01), Fischbeck
patent: 6142614 (2000-11-01), Hashizume et al.
patent: 6209994 (2001-04-01), Furuhata et al.
patent: 6840601 (2005-01-01), Miyata
patent: 2004-001366 (2004-01-01), None
patent: 2004-001431 (2004-01-01), None
patent: 2004-130558 (2004-04-01), None
patent: 2004-224035 (2004-08-01), None

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