Audio tape cassette comprising a felt pad and a magnetic tape ha

Details Audio tape cassette comprising a felt pad and a magnetic tape ha Audio tape cassette comprising a felt pad and a magnetic tape ha

1993-01-25

1995-05-30

Resan, Stevan A.

Dynamic magnetic information storage or retrieval

Head

Head accessory

36013031, 428409, 4284259, 4284246, 428436, 428523, 428694TB, 428694BB, 428900, G11B 500

Patent

active

054207380

ABSTRACT:
An audio tape cassette comprising a cassette shell, a pair of hubs which is rotatably positioned in the cassette shell, a magnetic tape which is wound around the hubs with its magnetic layer facing outward, guiding parts which are positioned in the cassette shell and guide the running direction of the magnetic tape, and a felt pad which is positioned between the hubs at the front of the shell, which contacts a back of the magnetic tape to press the magnetic tape to a magnetic head, wherein the magnetic tape has a back coating layer which comprises a pigment and a binder having a coefficient of friction not larger than 0.4 against the felt pad which has good runnability, and wherein generation of wow, flutter and modulation noise is apparent and edge damage of the magnetic tape is prevented.

REFERENCES:
patent: 3682486 (1972-08-01), Zwetzig et al.
patent: 4532178 (1985-07-01), Matsumoto
patent: 4555443 (1985-11-01), Kikugawa et al.
patent: 4573095 (1986-02-01), Bordignon
patent: 4612593 (1986-09-01), Oishi
patent: 4720413 (1988-01-01), Horiguchi et al.
patent: 4780782 (1988-10-01), Bordignon
patent: 4789583 (1988-12-01), Akutsu
patent: 4871606 (1989-10-01), Matsuura et al.
patent: 4922361 (1990-05-01), Bordignon

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