In a cassette accommodation chamber of a printing device, a cassette accommodating a tape-shaped member is detachably mounted. The cassette accommodation chamber has a bottom surface, and an entrance opening opposite to the bottom surface. In the accommodation chamber, cassette receiving members are provided for receiving the cassette in such a fashion that, if a relatively thin cassette which accommodating a relatively thin cassette in said accommodation chamber, the thin cassette is positioned away from the bottom surface of said accommodation chamber. Namely, the cassette is positioned such that the surface of the cassette is positioned at the substantially same position regardless of the thickness of the cassette.
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