Liquid jet head having ejection and non-ejection grooves

摘要

A liquid jet head 1 includes an actuator substrate 2 formed by arraying a plurality of grooves 6, which penetrates from an upper surface US to a lower surface LS of the actuator substrate 2 and is long in a surface direction, a cover plate 3 provided at the actuator substrate 2 so as to cover an upper surface opening 7 of the groove 6, and a nozzle plate 4 provided at the actuator substrate 2 so as to cover a lower surface opening 8 of the groove 6. The groove 6 includes an ejection groove 6a and a non�ejection (dummy) groove 6b which are alternately arrayed, and is formed in such a manner that configurations of the lower surface openings 8 of the ejection groove 6a and the non�ejection groove 6b are different. The ejection groove 6a may be or a different length or width to the non-ejection groove 6b.