Ink-jet recording apparatus

An inkjet recording apparatus, comprising:

• a head having a nozzle row configured to eject ink;
• a main tank configured to store the ink;
• a first flow passage through which the ink flows from the main tank;
• a sub-tank connected to the first flow passage and configured to temporarily store the ink flowing in the first flow passage;
• a second flow passage through which the ink flows from the sub-tank;
• a deaerator connected to the second flow passage and configured to deaerate the ink flowing in the second flow passage;
• a third flow passage through which the ink deaerated by the deaerator flows to the head;
• a fourth flow passage connecting the head and the sub-tank, the ink being returned from the head to the sub-tank through the fourth flow passage;
• a circulation pump configured to apply pressure to the ink in a circulation flow passage including the sub-tank, the second flow passage, the deaerator, the third flow passage, the head, and the fourth flow passage, to generate an ink flow of the ink in the circulation flow passage;
• and
• a damper disposed in the fourth flow channel to control fluctuations in pressure applied to the head,
• wherein the deaerator has an ink inlet and an ink outlet, and
• the ink inlet is arranged closer to the head than the ink outlet in a direction in which the ink is ejected from the nozzle row.