Patent ID: 8939557
Filing Date: 2015-01-27
Classification: B41J

Abstract:
1. A liquid discharge head comprising: a surface plate having a plurality of discharge ports for discharging liquid; and a liquid discharge body having a discharge portion for supplying the liquid to the discharge ports, wherein the discharge portion and an opening are alternately arranged on the liquid discharge body and the liquid discharge body includes a bonding unit formed by combining two piezoelectric material plates, and each of the piezoelectric material plates is provided with a plurality of grooves on a first surface and has a first electrode on one side wall surface and the bottom of at least one of the grooves of the piezoelectric material plate, a second electrode on the other side wall surface of the at least one of the grooves of the piezoelectric material plate, and a third electrode on a second surface which is a rear surface opposite to the first surface of the piezoelectric material plate, each of the piezoelectric material plates is polarized in a direction connecting the first electrode and the second electrode and also in a direction connecting the first electrode and the third electrode, and the two piezoelectric material plates are bonded so that the first surfaces face each other to form the bonding unit.