| 摘要 |
PROBLEM TO BE SOLVED: To obtain high discharge efficiency and high discharge pressure while improving the refilling of a discharge liquid by providing the first common liquid chamber higher in the vertical direction with a plane including a moving member at a stationary state than the first liquid channel, providing the fulcrum of the moving part in the first common liquid chamber and providing the free end at a stationary state in the first liquid channel. SOLUTION: The first common liquid chamber 13 is provided higher than the first liquid channel 14 in the vertical direction with a plane including a moving member 31 in a stationary state, the fulcrum 33 of the moving member 31 is provided in the first common liquid chamber 13, the free end 32 in a stationary state is provided in the first liquid channel 13. As a result, with the growth of bubbles 40, the moving member 31 is gradually displaced, directing the growth direction toward the outlet evenly. In the defoaming process, when the moving member 31 returns to its original position, the meniscus stops receding, the supply of a liquid equivalent to the cubic capacity W2 of bubbles remaining in the bubble occurrence area 11 side is suppressed by a liquid supply from a flow VD2 of the second liquid channel 16, the recession of the meniscus is reduced to half as much as W1 on the upper side. |
