Kyocera Corporation

Kosei Horiuchi

Yoshihiro Yuu

Kouji Eitoku

The present invention aims at providing a piezoelectric substrate with high joining strength between an electrode of the piezoelectric substrate. The piezoelectric substrate of the present invention is a flat plate-shaped piezoelectric substrate including a piezoelectric ceramic layer, a plurality of first electrodes and a second electrode disposed on one main surface of the piezoelectric ceramic layer, a third electrode disposed on the other main surface of the piezoelectric ceramic layer so as to oppose to the first electrodes, and a through-conductor electrically connecting the second electrode and the third electrode. The second electrode includes a connection portion connected to the through-conductor, and a small-width portion having a smaller width than the connection portion when the piezoelectric substrate is viewed from above. The second electrode and the outside are electrically connected to each other at the small-width portion.

Piezoelectric substrate, assembly, liquid discharge head, and recording device, each using piezoelectric substrate

A liquid ejecting head includes a first compression chamber rowA on other side of a sub-manifold, which extends in one direction, in other direction, and a second compression chamber rowB on one side of the sub-manifoldin the other direction. First restricting-portion bodiesAa and second restricting-portion bodiesBa extend in a direction that crosses the one direction, and are alternately arranged in the one direction. First inletsAb are on the one side of the second outletsBc in the other direction. The first inletsAb have an opening width greater than an opening width of the second outletsBc. Channels of the second restricting portionsB have a similar configuration.

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Aira, Japan

Kosei Horiuchi