G - Physics – 11 – B
Patent
G - Physics
11
B
352/31.11
G11B 5/82 (2006.01) G11B 17/03 (2006.01) G11B 23/00 (2006.01) G11B 23/033 (2006.01) G11B 23/04 (2006.01)
Patent
CA 1177576
ABSTRACT OF THE DISCLOSURE A flexible magnetic disk cassette includes a flexible magnetic disk; a cover for containing the magnetic disk, the cover having a driving hole for driving the flexible magnetic disk from outside of the cover, a recording opening for exposing a recording surface of the flexible magnetic disk, and a cut-out portion provided on one side of the cover for detect- ing correct installation of the flexible magnetic disk cassette into a recording and/or reproducing apparatus; and a shutter slidably provided on the cover for selectively exposing the recording surface through the recording opening and the cut-out portion, when the flexible magnetic disk is ready for use. A recording and/or reproducing apparatus for the flexible magnetic disk cassette includes a driving means being engaged with the flexible magnetic disk through the driving hole of the cover for rotating the flexible magnetic disk; a transducing head means being contacted with the recording surface of the flexible magnetic disk through the recording opening when the shutter is operative position; and a pro- jection provided in the apparatus in facing relation to the cut-out portion of the cover when the flexible magnetic disk cassette is installed correctly.
383408
Fujimoto Kazumi
Ito Sadayuki
Tsuji Akira
Gowling Lafleur Henderson Llp
Sony Corporation
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