Patent ID: 9293682
Filing Date: 2016-03-22
CPC Classification: B41J,H01L

Claim Text:
1. A liquid jetting apparatus comprising: a first channel structure in which a first liquid channel is formed, the first liquid channel including a plurality of nozzles and a plurality of pressure chambers communicating with the plurality of nozzles respectively; a piezoelectric actuator provided on the first channel structure to cover the plurality of pressure chambers; and a driving device configured to drive the piezoelectric actuator, wherein: the piezoelectric actuator comprising: the plurality of piezoelectric elements include a first piezoelectric element and a second piezoelectric element; a total length of a wire which connects the first piezoelectric element and the driving device and which includes the actuator wire is longer than a total length of a wire which connects the second piezoelectric element and the driving device and which includes the actuator wire, the piezoelectric actuator further comprising a capacitor that is connected to the actuator wire which connects the first piezoelectric element and the signal input portion or the actuator wire which connects the first piezoelectric element and the reference potential portion such that the capacitor is serially connected to the first piezoelectric element; and the capacitor includes an insulator formed of a piezoelectric material same as the piezoelectric material of the activators of the plurality of piezoelectric elements.