| 摘要 |
To be capable of preventing the erroneous detection of the residual amount of ink, and to facilitate exchange work. Provided is an ink cartridge including: a flexible ink bag, configured to store ink and change a thickness thereof in response to an amount of the ink; a housing that houses the ink bag; an outflow port that is formed on a front surface of the housing, communicates with the ink bag, and causes the ink to flow out of the inside of the ink bag; a first detection window and a second detection window, which are formed on the housing; a plate that is fixed to an upper surface of the ink bag, and moves together with the ink bag in response to fluctuations of the amount of ink; an "empty" detecting member that is set movable following the plate in the housing, and moves to a position of closing the first detection window when the ink runs out; and a "full" detecting member that is set movable following the plate in the housing, and moves to a position of closing the second window when a fixed amount or more of the ink is stored in the ink bag.
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