| 摘要 |
An ink cartridge includes a case, and the case includes an ink chamber configured to store ink therein, and a particular face facing an exterior of the case and having a first opening formed therethrough. The case also includes an engaging portion positioned at the particular face, and a particular wall extending from a particular portion of the particular face. The particular portion surrounds the first opening, and the particular wall has a tube shape. The particular wall includes an end defining a second opening opposite the first opening. The ink cartridge also includes an elastic member positioned at the end of the particular wall, and a cap. The cap includes an end wall having an third opening formed therethrough, a peripheral wall surrounding each of the elastic member and a portion of the particular wall, and an engaging member extending from the peripheral wall and engaging the engaging portion.
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