Patent ID: 11919302
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A print apparatus comprising:
a piezoelectric member configured to be deformed in order to discharge a liquid from a nozzle;
an individual electrode formed in the piezoelectric member;
a first common electrode formed in the piezoelectric member;
a second common electrode formed in the piezoelectric member, a voltage to be applied to the second common electrode being different from a voltage to be applied to the first common electrode; and
a detection circuit configured to detect a capacitance of a first capacitor configured by the piezoelectric member, the individual electrode, and the first common electrode and a second capacitor configured by the piezoelectric member, the individual electrode, and the second common electrode,
wherein the detection circuit includes an oscillation circuit configured to be connected to the individual electrode.