Patent ID: 9346267
Filing Date: 2016-05-24
CPC Classification: B41J

Claim Text:
1. A liquid jet head comprising: a first piezoelectric body substrate having n pieces (where n is an integer of 1 or larger) of ejection grooves arrayed with an identical pitch P in a reference direction on a surface of the first piezoelectric body substrate and (n+1) pieces of non-ejection grooves arrayed alternately with the ejection grooves while shifted from the ejection grooves by a half pitch (P/2); and an opaque substrate bonded to the surface of the first piezoelectric body substrate and having a plurality of pieces of through holes passing through the opaque substrate in a thickness direction thereof and arrayed in the reference direction; wherein the plurality of pieces of through holes comprises n pieces of through holes communicating with the respective n pieces of the ejection grooves, a first through hole which is not in communication with any of the ejection grooves and is located outside of one end side of a row of holes formed of the n pieces of through holes communicating with the ejection grooves, and a second through hole which is not in communication with any of the ejection grooves and is located outside of another end side of the row of holes.