Liquid jetting apparatus

A liquid jetting apparatus which jets a liquid, the apparatus comprising:

• a cavity unit having a plurality of nozzles through which the liquid is jetted, and a plurality of pressure chambers which communicate with the nozzles and in which predetermined openings are formed, respectively;
• and
• an actuator unit which is stacked on the cavity unit in a predetermined stacking direction, with a predetermined contact surface of the actuator covering the openings of the cavity unit;
• and in which a plurality of ceramics layers stacked in the stacking direction, a plurality of individual electrodes individually arranged corresponding to the pressure chambers respectively, a common electrode provided in common to all the pressure chambers, and a barrier layer preventing the liquid from penetrating therethrough are stacked,
• wherein the individual electrodes and the common electrode are arranged to sandwich one of the ceramics layers, and the actuator unit applies a jetting pressure selectively to the pressure chambers by applying a predetermined driving voltage to a portion, of the one of the ceramics layers, sandwiched between one of the individual electrodes and the common electrode;
• and
• the barrier layer is stacked at a position of the actuator unit between the contact surface and a certain individual electrode which is closest to the contact surface among the individual electrodes, the position being different from a position on the contact surface.