Magnetic tape cassette having ribs in reel areas

Details Magnetic tape cassette having ribs in reel areas Magnetic tape cassette having ribs in reel areas

1991-03-21

1993-02-23

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 2302

Patent

active

051895838

ABSTRACT:
A magnetic tape cassette comprises a casing formed with upper and lower half casings and reel hubs rotatably supported in the casing to wind and rewind a magnetic tape, wherein at least one of the upper and lower half casings has ribs in the reel areas in the inner sufrface of the base plate so that a number of recesses are formed by the ribs, and wherein the depth of the recesses produced by forming the ribs is varied in correspondence to the degree of roughness of the outer surface of the base plate which is determined by requirements in designing the half casing having the ribs.

REFERENCES:
patent: 4678138 (1987-07-01), Nemoto
patent: 5089924 (1992-02-01), Teuber et al.

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