| 摘要 |
A head unit has a supply tank provided above a plurality of heads, for storing ink and a collecting part having an internal space into which ink flows from the plurality of heads. In the head unit, a plurality of ink inlet pipes serving as a plurality of passages leading from the supply tank to the plurality of heads have the same shape and the same resistance and a plurality of ink outlet pipes serving as a plurality of passages from the plurality of heads to the collecting part have the same shape and the same resistance. This equalizes respective flow rates of ink and respective pressures of ink at nozzles in the plurality of heads. As a result, it is possible to suppress variation in landing positions and the like of ink with respect to the nozzles among the plurality of heads. |
