Optical tape end detector in magnetic tape casette with means to

Details Optical tape end detector in magnetic tape casette with means to Optical tape end detector in magnetic tape casette with means to

1986-08-08

1988-08-09

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 2302

Patent

active

047632178

ABSTRACT:
A magnetic tape cassette in which an L-shaped prism reflects externally applied light through the tape to an external light detector in order to detect a transparent end of the tape. The light receiving end of the prism has the shape of a convex lens in order to correct misaligned externally applied light.

REFERENCES:
patent: 3615155 (1971-10-01), Gelbman
patent: 3638955 (1972-02-01), Wada
patent: 3705699 (1972-12-01), Siller
patent: 4032987 (1977-06-01), Singer et al.
patent: 4631618 (1986-12-01), Ozawa et al.

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