Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1992-02-26
1994-10-18
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record medium
In container
360134, 428323, G11B 5704, G11B 23087
Patent
active
053573919
ABSTRACT:
An audio tape cassette having a magnetic tape which is wound around a hub, a cassette shell and guiding parts which comprises a polypropylene resin including inorganic particles "A" dispersed in the tape cassette, wherein the magnetic tape has a back coating layer containing a polyester resin and inorganic particles "B" which have a hardness of not larger than that of the inorganic particles "A", and the magnetic tape has a CP value which is not larger than 1000 .mu.m.
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World Patents Index Latest, Section Ch, Week 9044, Derwent Publication Ltd., London, GB; Class L, AN 90-335079 and WO-A-9 012 392, (Hitachi Maxell), 18 Oct. 1990, abstract only.
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Foreign Search Report, (The Hague, Jun. 26, 1992, S. Klocke).
Katsuta Yoshiharu
Sakamoto Yuki
Sato Kouzaburo
Takahira Yoshiyuki
Yamasaki Yasuo
Hitachi Maxell Ltd.
Tupper Robert S.
Watkins Kevin M.
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