Magnetic tape cassette

Details Magnetic tape cassette Magnetic tape cassette

1988-09-21

1990-02-06

Werner, David

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

G11B 2304

Patent

active

048983381

ABSTRACT:
A magnetic tape cassette having an improved mistaken-insertion preventing structure. The cassette includes a pair of tape reels on which a magnetic tape is wound, a case in which the tape reels are rotatably mounted with an opening being formed in a front of the cassette through which the tape can be pulled out for recording and playback, and a guard panel provided at a front of the cassette for opening and closing the opening. In one embodiment, a bottom of the case is provided with at least three guide grooves extending in a front-to-rear direction of the cassette at a central portion thereof and both ends of the cassette corresponding in position to insertion guides of a recording/playback apparatus and located away from areas of rotation of the reels in directions of length, width and thickness of the cassette. Corresponding notches may also be provided in the guard panel, which may have a double-panel construction.

REFERENCES:
patent: 4607308 (1986-08-01), Tsuruta et al.
patent: 4786996 (1988-11-01), Ohtani et al.

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