Magnetic tape cassette

Details Magnetic tape cassette Magnetic tape cassette

G - Physics

11

B

352/31.1

G11B 15/02 (2006.01)

Patent

CA 1077619

MAGNETIC TAPE CASSETTE ABSTRACT OF THE DISCLOSURE A magnetic tape cassette is adapted to be used in a magnetic recording and/or reproducing apparatus provided with detecting means for detecting the ends of a magnetic tape in the magnetic tape cassette. The detecting means comprises a single light-emitting means and first and second light-receiving means respectively disposed opposite said light-emitting means. The magnetic tape cassette comprises first reel having a first hub and a second reel having second hub, an opaque magnetic tape having first and second transparent leader tapes provided at the opposite ends thereof and being connected at the opposite ends of the leader tapes to the first and second hubs, a cassette case for receiving and accomodating the first and second reels, and a lid hinged on the cassette case. The cassette case has first and second side walls respectively having a first and second windows formed therein, the first and second reels being interposed between said first and second side walls, a front face terminated at opposite ends by the spaced side walls, and a bottom face having a hole for receiving the light-emitting means. The lid swings between a closed position where the lid covers the front face and the first and second windows and an opened position where the lid exposes the first face and the first and second windows. The first window is formed in the first side at a position where the first window permits light passed through the first leader tape from the light-emitting means to reach the first light-receiving means when the lid is in the opened position. The second window is formed in - 2 -

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