Tape cassette utilizing fiber optic bundle

Details Tape cassette utilizing fiber optic bundle Tape cassette utilizing fiber optic bundle

1989-08-14

1991-01-29

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

In container

242199, G11B 2302

Patent

active

049891111

ABSTRACT:
A tape cassette of the type in which a tape having a transparent predetermined portion is housed between an upper cassette half and a lower cassette half in such a manner that the tape intersects a light path connecting a light emitting element insertion portion and a light receiving window formed through a side wall of the tape cassette, a light emitting element is inserted into the light emitting element insertion portion and a light receiving element is located outside of the light receiving window, thereby detecting the predetermined portion of the magnetic tape, and wherein the tape cassette has a rib formed on the upper cassette half, a rib formed on the lower cassette half, and an optical fiber bundle provided along the light path and near the light receiving window, whereby even when the tape cassette is a color other than black, a photoelectric type start sensor or end sensor can be prevented from malfunctioning.

REFERENCES:
patent: 4380032 (1983-04-01), Pfost

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