Patent ID: 8235509

Claim:
A liquid-droplet ejecting apparatus comprising: a liquid ejecting head having an ejection opening from which a droplet of a liquid is ejected; a liquid supply passage through which the liquid is supplied to the liquid ejecting head; a first gas suction passage normally held in communication with the liquid supply passage; a gas sucking device which sucks a gas in the liquid supply passage via the first gas suction passage; a gas-permeable film disposed at a communication portion at which the liquid supply passage and the first gas suction passage communicate with each other, the gas-permeable film allowing the gas to pass therethrough but not allowing the liquid to pass therethrough; an opening-and-closing device which is selectively placeable in a closed state to disconnect the first gas suction passage from the gas sucking device, and an open state to communicate the first suction passage with the gas sucking device; a gas-pressure detecting device which detects an internal gas pressure of the first gas suction passage; a gas-sucking-device control device which controls the gas sucking device, wherein the opening-and-closing device is placed in the open state when the gas sucking device is to suck the gas from the first gas suction passage, and is placed in the closed state when the gas sucking device completes the sucking of the gas from the first gas suction passage, and wherein the gas-sucking-device control device has the gas sucking device suck the gas in the liquid supply passage when the gas-pressure detecting device detects that the internal gas pressure of the first gas suction passage is equal to or above a first predetermined threshold and has the gas sucking device continue to suck the gas in the liquid supply passage until the internal gas pressure of the first gas suction passage decreases below the first predetermined threshold.