Piezoelectric element, droplet-ejecting head, and...

Details Piezoelectric element, droplet-ejecting head, and... Piezoelectric element, droplet-ejecting head, and...

2006-01-25

2008-08-19

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S072000

Reexamination Certificate

active

07413290

ABSTRACT:
The present invention provides a piezoelectric element at least including a piezoelectric layer, a first higher-potential electrode layer formed in contact with the piezoelectric layer on one face of the piezoelectric layer, and a second lower-potential electrode layer formed in contact with the piezoelectric layer on the face of the piezoelectric layer opposite to the first electrode layer, wherein the first electrode layer contains a metal A having a standard electrode potential of higher than 0 V and a metal B having a standard electrode potential higher than that of the metal A in which the metal A is present in the largest amount by weight of the total amount of the metal elements contained in the first electrode layer, the second electrode layer contains a metal C having a standard electrode potential lower than that of the metal A, in which the metal C is present in the largest amount by weight of the total amount of the metal elements contained in the second electrode layer.

REFERENCES:
patent: 6494567 (2002-12-01), Murai
patent: 7008048 (2006-03-01), Sakaida
patent: 2005/0052506 (2005-03-01), Takashi et al.
patent: 0 794 579 (1997-09-01), None
patent: 10 264384 (1998-10-01), None

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