| 摘要 |
An ink cartridge includes an ink bag, a plastic case, and an internal component other than the spout, the case housing the ink bag and including a first case and second case, the first case including at least a first wall portion and a side wall portion including a first side wall portion and a second side wall portion, the second case including at least a second wall portion, the first side wall portion including an exposure opening that is an opening that exposes at least a part of the internal component and that extends toward the first wall portion from an end portion on a side that contacts with the second wall portion when the first case and the second case are joined together.
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