Liquid jet head, liquid jet apparatus and method of manufacturing liquid jet head

摘要

A liquid jet head is provided with an actuator substrate partitioned by elongated walls of a piezoelectric body and having elongated ejection grooves and elongated non-ejection grooves alternately arrayed thereon so as to penetrate the actuator substrate from an upper surface through a lower surface thereof; a cover plate provided on the upper surface and having first slits communicating with the ejection grooves on one side and second slits communicating with the ejection grooves on the other side; and a nozzle plate provided on the lower surface and having nozzles communicating with the ejection grooves. The non-ejection grooves extend, on the other side, up to a second-side peripheral end of the actuator substrate, and the actuator substrate is left to form raised bottom portions on bottoms of the non-ejection grooves near the second-side peripheral end.

主权项

1. A liquid jet head comprising:
an actuator substrate partitioned by elongated walls of a piezoelectric body, the actuator substrate having elongated ejection grooves and elongated non-ejection grooves separated from one another by the walls and alternately arrayed on the actuator substrate so as to penetrate the actuator substrate from an upper surface through a lower surface thereof, wherein the non-ejection grooves extend from the vicinity of a first-side peripheral end of the actuator substrate positioned at a first side of the liquid jet head up to a second-side peripheral end thereof positioned at a second side of the liquid jet head, and the actuator substrate has raised bottom portions that define the bottoms of the non-ejection grooves near the second-side peripheral end of the actuator substrate.