| 摘要 |
A magnetic tap cassette 201 comprises: an open/close lid 208 which includes, as one element thereof, an outer lid 209 composed of a front lid plate 209a for covering the front surface side of magnetic tape and two side plate portion 209b respectively hanging down from the two sides of the front lid plate 209a, and also which is assembled in a freely openable and closable manner to the front surface side of a cassette main body so that, as the need arises, the magnetic tape can be covered by the open/close lid 208; and, two screwing portions 225d which are respectively formed in the front surface of an upper half and are used to screw together upper and lower halves projected up to a position adjacent to the outer lid 209. In order to be able to restrict the movement or displacement of the outer lid 209, there are provided in the outer lid 209 two ribs 208r which can be respectively contacted with the respective peripheral surfaces of the two screwing portions 225d. Accordingly, it is possible to provide a magnetic tape cassette which, even if shocks are given to a lid due to drop of the magnetic tape cassette, is surely able to prevent the lid against damage.
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