| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a passage formation member which achieves improvement of the ability of discharging air bubbles and reduction of pressure loss, and to provide a liquid jet head and a liquid jet device.SOLUTION: A passage formation member includes: a first passage 261 which causes a liquid to circulate in a direction intersecting with a vertical direction (an intersecting direction); and a second passage which is connected with the first passage and causes the liquid to circulate to the lower side in the vertical direction. The first passage includes an intersection portion 410 having a surface intersecting with the intersecting direction and reduces a cross section area of the first passage on a plane perpendicular to the intersecting direction toward the second passage.</p> |
