Liquid discharge head and method for manufacturing the...

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Reexamination Certificate

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07963640

ABSTRACT:
A liquid discharge head according to the present invention comprises plural pressure chambers for applying pressure to liquid, which respectively communicate with liquid discharge openings for discharging liquid; and plural piezoelectric elements, arranged respectively corresponding to the plural pressure chambers, which respectively include lower electrodes, piezoelectric layers and upper electrodes layered in order from the pressure chambers, the lower electrodes being extended to areas corresponding to areas between the plural pressure chambers, and wherein an insulating layer is provided so as to cover at least all the lower electrodes located in the areas corresponding to areas between the plural pressure chambers.

REFERENCES:
patent: 6908563 (2005-06-01), Tokunaga
patent: 7207109 (2007-04-01), Tokunaga et al.
patent: 7448733 (2008-11-01), Murata et al.
patent: 2005/0128255 (2005-06-01), Nakanishi
patent: 2006/0027529 (2006-02-01), Tokunaga
patent: 2006/0028513 (2006-02-01), Tokunaga
patent: 9-277519 (1997-10-01), None
patent: 2000-37868 (2000-02-01), None
patent: 2004-186574 (2004-07-01), None

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