Optical tape end sensing arrangement for magnetic tape cassette

Details Optical tape end sensing arrangement for magnetic tape cassette Optical tape end sensing arrangement for magnetic tape cassette

1988-03-28

1990-02-13

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360132, G11B 522

Patent

active

049011715

ABSTRACT:
A tape cassette arrangement includes structures formed integrally with the cassette halves or simply fitted into the light transmission apertures. Specific embodiments of the invention include light polarizing elements which are fitted into apertures formed in the sides of the cassette, corrugations on the interior of the cassette proximate the apertures, and shielding walls which are located to block light and in particular that light which tends to enter through a large window provided in the upper surface of the cassette and through which the status of the tape is visible.

REFERENCES:
patent: 4363059 (1982-12-01), Matsuzawa et al.
patent: 4644433 (1987-02-01), Horikawa et al.
patent: 4740857 (1988-04-01), Ogawa

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