Tape cassette with sealed light aperture

Details Tape cassette with sealed light aperture Tape cassette with sealed light aperture

1991-01-07

1991-12-24

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 746, 242199, G11B 2302

Patent

active

050758101

ABSTRACT:
A tape cassette suitable for use in an 8-mm video tape recorder for recording and/or reproducing video and audio signals, which comprises a light projecting section inserting aperture formed on the bottom surface of the cassette near the front surface of the cassette between supply and takeup reels juxtaposed in the cassette, light receiving windows formed through the both side walls of the cassette for passing therethrough a light emitted from a light emitting element inserted in the light projecting section inserting aperture and a transparent portion molded integrally with the upper surface of the cassette such that the supply and takeup reels are visible through the transparent portion, wherein a transparent portion formed at least a part of a wall portion surrounding the light projecting section inserting aperture is integrally molded with the transparent portion of the upper surface of the cassette, to thereby easily manufacture the tape cassette which can prevent infiltration of dust or the like and accordingly protect the magnetic tape from appearing thereon rust or the like.

REFERENCES:
patent: 3615155 (1971-10-01), Gelbman
patent: 4602303 (1986-07-01), Pertzoch et al.
patent: 4672498 (1987-06-01), Harada
patent: 4706149 (1987-11-01), Machida et al.
patent: 4740857 (1988-04-01), Ogawa

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