| 摘要 |
An ink jet recording apparatus including a recording head having nozzles; an ink-tank supporting portion which supports ink tanks; ink-tank-side fluid flow channels which connect the ink tanks to the recording head and include ink supply tubes; buffer tanks provided between the ink supply tubes and the recording head; a discharging device which discharges a fluid from each of the buffer tanks into an outside space; and discharging-device-side fluid flow channels which communicate, at respective one ends thereof, with the buffer tanks, respectively, while bypassing the recording head, and communicate, at respective other ends thereof, with the discharging device. A first one of the discharging-device-side fluid flow channels that communicates with a first one of the ink-tank-side fluid flow channels has a liquid flow resistance smaller than a liquid flow resistance of a second one of the discharging-device-side fluid flow channels that communicates with a second one of the ink-tank-side fluid flow channels that has a liquid flow resistance greater than a liquid flow resistance of the first ink-tank-side fluid flow channel.
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