| 摘要 |
PROBLEM TO BE SOLVED: To clean a magnetic disk while it is stably rotated at high speed. SOLUTION: This cartridge 1 consists of a cartridge body 4, in which a magnetic disk 5 is freely rotatably stored and in which opening parts 26, 27 for recording/reproduction are prepared for exposing the signal recording area of the magnetic disk 5 outward, and consists of liners 49, 51, which are provided with an adhesive part having a non-permeable heat-sensitive adhesive layer on one side with the layer sticking to the inside of the cartridge body 4 as well as a non-adhesive part separable from the inside of the cartridge body 4, and which are each arranged on the opposing inner faces of the cartridge body 4 in a manner that the magnetic disk 5 is held in between. The non- adhesive part of the liners is formed, endlessly and continuously to the adhesive part, in the area excluding±30 deg. range on both sides of the orifices for recording and reproduction from the center line going through the center of the cartridge body 4 and bisecting these opening parts 26, 27.
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