| 摘要 |
A main tank has a storage space which stores a liquid. A sub tank has a predetermined interior space and an atmosphere communicating hole which makes the interior space communicate with an atmosphere, formed therein, and has an opening and closing valve which opens and closes the atmosphere communicating hole. When the main tank is not mounted on a main tank installing portion, the opening and closing valve closes the atmosphere communicating hole. When the main tank is mounted on the main tank installing portion, a discharge operation of discharging the liquid from the nozzles of the head with the atmosphere communicating hole closed by the opening and closing valve is carried out. Thereafter, the opening and closing valve opens the atmosphere communicating hole. Accordingly, the liquid is prevented from being leaked out from the sub tank when the main tank is removed.
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