Patent ID: 8042911

Claim:
A liquid dispenser head, comprising: a plurality of nozzles configured to discharge liquid; a plurality of pressure chambers, each one of the plurality of pressure chambers being configured to communicate with a corresponding one of the plurality of nozzles; an energy generator provided for said each one of the plurality of pressure chambers, and configured to generate energy for pressurizing liquid in said each one of the plurality of pressure chambers; a shared chamber configured to supply liquid to the plurality of pressure chamber; a vibration member forming at least one of plural walls of said each one of the plurality of the pressure chambers, and including an energy-transmitting area configured to transmit the energy generated by the energy generator to each one of the plurality of the pressure chambers; and a specific wall portion locally positioned between the shared chamber and the energy-transmitting area, and constituting a part of a wall of said each one of the plurality of pressure chambers, the wall including first and second wall portions in addition to the specific wall portion, the first and second wall portions and the specific wall portion collectively forming a planar surface of the wall, the specific wall portion being interposed between the first and second wall portions, and the specific wall portion being configured to have a structural compliance set greater than a compression compliance of liquid in said each one of the plurality of pressure chambers.