| 摘要 |
The inkjet recording head assembly comprises: a recording head which has nozzles discharging ink; a main tank which is a supply source of the ink; and an auxiliary tank which communicates with the main tank, the auxiliary tank being in direct connection to the recording head without interposing tubes, a circulation channel being formed by the auxiliary tank and an ink flow channel in the recording head, the auxiliary tank having an exhaust channel connected to a pressure reduction device which reduces inner pressure of the auxiliary tank.
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