Patent ID: 8132882

Claim:
A recording apparatus comprising: a recording head comprising: a common liquid channel; a plurality of pressure chambers; a plurality of nozzles; a plurality of individual liquid channels, each of the individual liquid channels being associated with a respective one of the pressure chambers and a respective one of the nozzles, each individual liquid channel extending from an outlet of the common liquid channel via the associated pressure chamber to the associated nozzle; and a plurality of actuators, each of the actuators being associated with the respective one of the pressure chambers and configured to impart a pressure to a liquid inside the respective one of the pressure chambers; and a control unit that is configured to drive the actuators; wherein the control unit comprises: an excessive state detection section that is configured to detect an excessive state in which a pressure difference between a liquid-side pressure and an air-side pressure at a meniscus formed at any one of the nozzles exceeds a threshold value when droplets are ejected from the nozzles, and a meniscus vibration section that is configured to drive the actuator associated with the nozzle that does not eject droplets such that the meniscus formed at the nozzle that does not eject droplets is subjected to vibration without ejecting the droplets for a predetermined vibration time from a start of the excessive state when the excessive state detection unit detects the excessive state.