Patent ID: 7651200
Filing Date: 2010-01-26
Classification: B41J

Abstract:
1. An ink jet head, comprising: a passage unit comprising a nozzle, a pressure chamber communicating with the nozzle, and a concave portion; an actuator unit comprising a piezoelectric layer, a first electrode connected with a front surface of the piezoelectric layer, a second electrode connected with a back surface of the piezoelectric layer, a first insulating layer located between the second electrode and the passage unit, and a first conductive member, wherein the first insulating layer comprises a first through hole located at a position facing the concave portion, at least a part of the first conductive member is located in the first through hole, one end of the first conductive member is electrically connected with the second electrode, and a conductive path from the one end of the first conductive member to the second electrode is formed inside the actuator unit; and a conductive adhesion layer adhering to both a front surface of the passage unit and a back surface of the first insulating layer, wherein an other end of the first conductive member makes contact with the conductive adhesion layer.