| 摘要 |
To reduce a thickness of a liquid jet head (1) having two nozzle columns, and reduce unevenness of discharge speed of a liquid droplet jetted from respective nozzles, provided is the liquid jet head (1) including: an actuator chip (3) including a first actuator (2a) and a second actuator (2b) on one surface (4) side and on another surface (5) side, respectively, of a substrate (12); a first flow path member (11a) and a second flow path member (11b) placed on both sides of the actuator chip (3); and a connecting member (14) for dividing and supplying liquid to the first flow path member (11a) and the second flow path member (11b). The first flow path member (11a) and the second flow path member (11b) include therein a first liquid supply chamber (9a) and a second liquid supply chamber (9b), respectively, which are elongated regions. Cross-sectional areas of the first liquid supply chamber (9a) and the second liquid supply chamber (9b) in a direction orthogonal to a direction of a long side are formed to gradually decrease from a liquid inflow side to an opposite side thereof.
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