Magnetic tape cassette which avoids flange/housing contact

Details Magnetic tape cassette which avoids flange/housing contact Magnetic tape cassette which avoids flange/housing contact

1988-06-20

1990-04-10

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

In container

242197, G11B 2302

Patent

active

049165666

ABSTRACT:
A magnetic tape cassette comprising a tape reel having a lower flange with an annular guide projection on a bottom surface thereof and a cassette casing including a lower housing portion with an annular guide portion on the inner surface thereof for limiting play of the tape reel within the cassette casing in any directions of the tape reel assemblies. Dust is generated only at a contacting section between surfaces of the annular projection and the annular recess portion. The dust, therefore, tends to fall out of circular openings of the lower housing portion, and since the edges of the flanges are prevented from coming into contact with the interior surface of the casing, no dust is formed within the cavity in which the tape is disposed; thus damage to the tape is avoided.

REFERENCES:
patent: 3620477 (1971-11-01), Penn
patent: 3620478 (1971-11-01), Fitzgerald et al.
patent: 4316589 (1982-02-01), Stranders
patent: 4452407 (1984-06-01), Ogata et al.
patent: 4452408 (1984-06-01), Sasaki
patent: 4541581 (1985-09-01), Hara
patent: 4706149 (1987-11-01), Machida et al.

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