| 摘要 |
A head chip and a head unit, in which recording density is improved and also manufacturing cost is reduced, are provided, in a head chip in which: partition walls 12 made of piezoelectric ceramic are arranged on a board 11 with predetermined intervals; chambers 13 are defined between the respective partition walls 12; a driver voltage is applied to electrodes 14 provided on the side surfaces of the partition walls 12 to change the capacity in the chambers 13; and the ink filled in the chambers 13 is jetted from nozzle openings, the chambers 13 are arranged in parallel between two upper and lower sheets of boards 11a and 11b, which are made of a dielectric material having a light transmitting property, in the width direction with predetermined intervals, and also a plurality of the boards are laminated in the vertical direction.
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