| 摘要 |
To achieve a uniform ink discharge speed, there is provided an head chip including a plurality of channels partitioned with piezoelectric elements and formed parallel to each other, in which: the channels include a discharge channel disposed in a middle portion of the channels in a channel parallel direction and a dummy channel disposed in each of both end portions of the channels in the channel parallel direction; the discharge channel communicates with an ink chamber via an ink introduction hole and with the nozzle hole; one of discharge of the ink droplet from the dummy channel toward the recording medium and supply of the ink from the ink chamber to the dummy channel is interrupted; and one of the piezoelectric elements which is adjacent to the discharge channel, and one of the piezoelectric elements which is adjacent to the dummy channel are each applied with a voltage. |
