Patent ID: 8388121

Claim:
A liquid-jetting apparatus which jets a liquid, the liquid-jetting apparatus comprising: a liquid-jetting head which jets the liquid; a liquid tank which stores the liquid to be supplied to the liquid-jetting head; a first flow passage which connects the liquid-jetting head and the liquid tank; a gas-liquid separating section which is arranged at an intermediate position of the first flow passage and which separates the liquid and a gas existing in the liquid from each other; a gas communication passage which connects the gas-liquid separating section and the liquid tank and through which the gas in the gas-liquid separating section is transported to the liquid tank; a valve which is arranged at an intermediate position of the gas communication passage and which avoids inflow of the gas from the liquid tank to the gas-liquid separating section; a second flow passage which communicates an upstream side of the gas-liquid separating section and a downstream side of the gas-liquid separating section without passing through the gas-liquid separating section; and a switching mechanism which selectively switches between a first passage route for supplying the liquid in the liquid tank to the liquid-jetting head through only the first flow passage and a second passage route for supplying the liquid in the liquid tank to the liquid-jetting head through the second flow passage without passing through the gas-liquid separating section.