Dynamic magnetic information storage or retrieval – Head – Head surface structure
Patent
1992-10-26
1995-04-04
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Head surface structure
360126, 428900, G11B 5255, G11B 5147
Patent
active
054042593
ABSTRACT:
In order to improve a wear resistance and recording and reproducing properties of a magnetic head which has a magnetic core having a magnetic gap and a penetrated hole, a pair of reinforcing members holding the magnetic core therebetween, each having an opening corresponding to the penetrated hole, and a winding wound onto the magnetic core and the reinforcing members through the penetrated hole and the opening, each of the reinforcing member is a non-magnetic substrate which is made of a ceramic material essentially consisting of 2-30 weight % CaO, 2-50 weight % TiO.sub.2, and 30-80 weight % NiO and having an average grain size of 2 .mu.m or less. Alternatively, another ceramic is used which essentially consists of 2-30 weight % CaO, 2-50 weight % TiO.sub.2, 30-80 weight % NiO, and 0.2-1 weight % Al.sub.2 O.sub.3, and having an average grain size of 2 .mu.m or less, excluding zero.
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Ishiwata Nobuyuki
Konno Masataka
Okumura Toshiyuki
Tamura Mitsuo
Urai Haruo
Heinz A. J.
Letscher George J.
NEC Corporation
Tokin Corporation
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