| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink jet recording apparatus capable of efficiently discharging air has penetrated at the time of replacement of an ink cartridge by purge treatment. SOLUTION: A manifold 40 has an ink jet head 31 having a plurality of jet channels 33 and an ink cartridge connected thereto in a freely detachable manner and supplying the ink liquid in the ink cartridge to the respective jet nozzles 33 is provided and has the ink supply passage 43 expanded from the ink inflow part 43a connected to the ink cartridge to the ink supply port 33a of the jet channel 33 and, when air penetrating at the time of replacement of the ink cartridge is present in the ink supply passage 43 as one almost spherical air bubble, the air bubble comes into contact with the ink jet head 31 and the ink supply passage 43 and is held in the ink supply passage 43 in the state closing the connection passage 44 having the ink inflow passage 43. |
