PURPOSE: To stably supply ink even when ink particle jet parts are arranged in high density by differentiating the flow directions to the ink chambers adjacent to the ink chamber of the ink particle and providing a plurality of ink supply passages.

CONSTITUTION: Ink supply passages 38 are provided to the ink chambers 40 of ink particle jet parts 37 adjacent to each other so as to supply ink in different directions across the line connecting the ink particle jet parts 37 in an arrangement direction. Even when the ink particle jet parts 37 are arranged in high density, the interval between the ink supply passages 38 actually adjacent to each other can be widened so as to become almost twice the arranging interval of the ink particle jet parts 37. The ink supply passages 38 having a sufficient cross section hard to generate clogging can be ensured and the interference of ink flow easy to generate at the inlet parts of the adjacent ink supply passages 38 is prevented and ink can be stably supplied to the respective ink chamber 40.