Patent ID: 7033002

Claim:
A liquid droplet ejecting head ejecting liquid droplets by pressure waves caused by electrostatic forces, the liquid droplet ejecting head including: one or more nozzle holes ejecting the liquid droplets; one or more pressure liquid chambers communicating with the nozzle holes and containing liquid to be ejected; a common liquid chamber communicating with the pressure liquid chambers one or more diaphragms each forming a wall face of the corresponding pressure liquid chamber; one or more vibration chambers containing air gaps provided in contact with the diaphragms on an opposite side from the pressure liquid chambers; and one or more electrodes provided to oppose the diaphragms through the air gaps, the liquid droplets being ejected from the nozzle holes by increasing pressure inside the pressure liquid chambers by deflecting the diaphragms by the electrostatic forces generated by voltages applied to the electrodes, the liquid droplet ejecting head comprising: a deformable plate whose deformation is greater than a total deformation of the diaphragms, the deformable plate forming a wall face of the common liquid chamber; and a pressure correcting chamber provided across said deformable plate from the common liquid chamber so as to communicate with the vibration chambers.