| 摘要 |
A printer includes: a printing unit configured to transfer ink to a printing medium; a main tank configured to store unused ink; a sub tank including a bottom surface located lower than a bottom surface of the main tank and configured to receive supply of the unused ink from the main tank; an ink supply unit configured to supply ink stored in the sub tank to the printing unit; and an ink collection unit configured to collect excess ink of the ink supplied to the printing unit by the ink supply unit and to return the excess ink to the sub tank, the excess ink being ink remaining in the printing unit without being transferred to the printing medium.
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