| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed chamber which can maintain the inside thereof in an optimum humidity condition. SOLUTION: A tray of the present invention includes a plurality of walls for demarcating a chamber, and the chamber comprises an open part for receiving a media roll, a cover for opening/closing the open part of the chamber, a first seal relating to the chamber and the cover in order to interrupt the movement of air when the cover is opened, a sheet slot demarcated in one of the plurality of walls in order to feed the media in a paper passage in a penetrating manner, and a second seal relating to the sheet slot for interrupting the movement of air to/from the chamber feeding the media.
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