| 摘要 |
A channel unit has a first individual ink channel including a first nozzle and a first pressure chamber, and a second individual ink channel including a second nozzle and a second pressure chamber. The channels have a mutually identical channel structure. A piezoelectric actuator, in which a vibration plate, a piezoelectric layer, and a pair of electrodes are stacked, is arranged on the upper surface of the channel unit. A portion of the piezoelectric layer facing the first pressure chamber is thinner than a portion facing the second pressure chamber. Accordingly, a liquid droplet-jetting apparatus is provided, in which the channel structure is simple, and the volumes of liquid droplets jetted from the first nozzle and the second nozzle respectively are different from each other.
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