Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1976-12-13
1978-05-23
Wolff, John J.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360132, 242188, G11B 1500
Patent
active
040914267
ABSTRACT:
A device detects an end of a tape in a tape cassette. The tape cassette comprises a first reel having an opaque tape wound thereon, with one end of the tape connected to a transparent first leader which is fixed at its other end to the hub of the reel. A second reel receives the tape as it is wound. This tape is connected to one end of a second transparent leader which is fixed at its other end to the second reel hub. A cassette containing the reels has first and second windows in at least one side wall. The tape end detection device comprises at least one light-emitting element and first and second light-receiving elements respectively disposed on opposite sides of the tape, relative to the first and second windows. The light-receiving elements detect the tape ends in resonse to their reception of light passing through the windows.
REFERENCES:
patent: 3596006 (1971-07-01), Lawhon
patent: 3861619 (1975-01-01), Wolff
patent: 3962727 (1976-06-01), Kamimura et al.
Victor Company of Japan , Limited
Wolff John J.
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