Patent ID: 9156260
Filing Date: 2015-10-13
Classification: B41J

Abstract:
1. A liquid jet head comprising: a piezoelectric body substrate, the piezoelectric body substrate including at least one groove row in which ejection grooves penetrating the piezoelectric body substrate from an upper surface thereof through a lower surface thereof and non-ejection grooves open on the upper surface are alternately arranged in a reference direction, common drive electrodes formed on both side surfaces of each of the ejection grooves, and individual drive electrodes formed on both side surfaces of each of the non-ejection grooves; and a cover plate bonded to the upper surface of the piezoelectric body substrate, the cover plate including a liquid chamber communicating with the ejection grooves, first through electrodes penetrating the cover plate in a thickness direction, the first through electrodes being electrically connected to the individual drive electrodes, and individual terminals placed on a front surface of the cover plate opposite to the piezoelectric body substrate, the individual terminals being electrically connected to the first through electrodes, wherein the piezoelectric body substrate includes a common wiring unit electrically connected to the common drive electrodes and individual wiring units electrically connected to the individual drive electrodes, the common wiring unit and the individual wiring units being placed on the upper surface of the piezoelectric body substrate, and wherein the individual drive electrodes and the first through electrodes are electrically connected to each other through the individual wiring units.