Liquid discharging device

摘要

The present invention improves rigidity in a joining portion between a substrate and piezoelectric element, and provides a liquid discharging device having improved vibration properties.;A liquid discharging device includes a pressure chamber made up of a space surrounded by a pair of side walls, a floor wall, and a ceiling wall; a substrate configured to make up at least one of the floor wall or ceiling wall; a liquid supplying unit configured to fill the pressure chamber with liquid; and an electrode having a pair of side walls made of piezoelectric elements, configured to apply voltage to the piezoelectric elements in order to shrink the volume of the pressure chamber by deforming the piezoelectric elements and to discharge liquid from the pressure chamber; wherein the tip side face portion of the piezoelectric element is restrained as to the substrate.

主权项

1. A liquid discharging device comprising: a pressure chamber formed by a first side wall made of a piezoelectric element, a second side wall made of the piezoelectric element, a floor wall or a ceiling wall, and a substrate, wherein an electrode is formed on a face of the first side wall and a face of the second side wall, the faces each facing an inner side of the pressure chamber to apply voltage to the piezoelectric element in order to change a volume of the pressure chamber by deforming the piezoelectric element;
a liquid supplying unit provided on a liquid supply side of the pressure chamber to supply the pressure chamber with liquid; and a nozzle plate provided on a liquid discharge side of the pressure chamber and having a hole through which the liquid of the pressure chamber is discharged, wherein the first side wall and the second side wall provided with the electrode are joined via an elastic member to the substrate, and wherein the elastic member covers a part of a side of the first side wall and a part of a side of the second side wall, the sides each facing the substrate, and the electrode is formed also on the covered first and second side walls.