Patent ID: 8596745

Claim:
A liquid jet head, comprising: an actuator substrate comprising: a plurality of grooves arranged in parallel in a surface of the actuator substrate and extending from a front end of the actuator substrate to a vicinity of a rear end of the actuator substrate while being spaced apart from one another through an intermediation of partition walls; drive electrodes arranged on side surfaces of each of the partition walls; and electrode terminals electrically connected to the drive electrodes and arranged on the surface of the actuator substrate in the vicinity of the rear end thereof; a cover plate bonded to the surface of the actuator substrate so as to close upper openings of the plurality of grooves to form a plurality of channels; a flexible substrate bonded to the surface of the actuator substrate in the vicinity of the rear end thereof; and a plurality of wiring electrodes formed on the flexible substrate and electrically connected to the electrode terminals; wherein the plurality of channels comprise: a discharge channel for discharging liquid; and a dummy channel that does not discharge the liquid, the discharge channel and the dummy channel being arranged alternately with each other; wherein the electrode terminals comprise: a first electrode terminal electrically connected to two drive electrodes formed on side surfaces of two partition walls on the discharge channel side, the two partition walls forming walls of the discharge channel; and a second electrode terminal electrically connected to a drive electrode arranged on a side surface of one of the two partition walls of the discharge channel on the dummy channel side, and electrically connected to a drive electrode arranged on a side surface of another one of the two partition walls on the dummy channel side; and wherein the wiring electrodes comprise: a common wiring electrode electrically connecting the first electrode terminal corresponding to the discharge channel with another first electrode terminal corresponding to another discharge channel; and a plurality of individual wiring electrodes electrically and individually connected to the second electrode terminal corresponding to the discharge channel and a second electrode terminal corresponding to the another discharge channel.