| 摘要 |
When each of an energy acting chamber and a second ejection port portion is partitioned by a first virtual plane into an area positioned on a first side of the first virtual plane and an area positioned on a second side of the first virtual plane, the energy acting chamber has a larger volume in the first side area than in the second side area. Conversely, the second ejection port portion has a smaller volume in the first side area than in the second side area. The first virtual plane is parallel to both a supply direction of a liquid flowing to the energy acting chamber and an ejection direction, and passes through a center of a heating element. The first virtual plane divides each of the energy acting chamber and the second ejection port portion into two parts in an orthogonal direction orthogonal to the supply direction.
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