| 摘要 |
A recording medium built-in cartridge of the present invention includes: a case; a recording medium housed in the case; and at least one humidity control member disposed in the case and including at least one humidity control material that absorbs moisture in the case when a humidity in the case is a first humidity or higher and emits the moisture to the case when the humidity in the case is a second humidity or lower, the second humidity being lower than the first humidity.
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