Dynamic magnetic information storage or retrieval – Head – Plural gaps
Patent
1985-04-02
1988-06-21
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Head
Plural gaps
360126, 360123, G11B 529, G11B 5265, G11B 5147
Patent
active
047528508
ABSTRACT:
Multi-track magnetic thin film heads for recording and reproducing an analog signal of an electronic still camera. The heads are constructed on a single non-magnetic substrate. Each of lower magnetic cores for the heads is separately formed in the surface of the non-magnetic substrate, in order to reduce cross talk from adjacent tracks. Further, in order to decrease a resistance of a coil thereof, a distance of back head gap parts of adjacent heads is formed larger than a distance of front head gap parts of the adjacent heads. As the non-magnetic substrate, a ceramic material comprising at least MnO and NiO are used, as a magnetic core material, an amorphous material including Co, Nb and Zr is used, and as a magnetic gap material, Cr or Zr is used.
REFERENCES:
patent: 4052749 (1977-09-01), Nomura et al.
patent: 4488195 (1984-12-01), Yamagiuchi et al.
patent: 4550353 (1985-09-01), Hirai et al.
patent: 4558385 (1985-12-01), Kaminaka et al.
patent: 4559572 (1985-12-01), Kumasaka et al.
patent: 4598052 (1986-06-01), Wada et al.
Konishi Katsuo
Saito Masakatsu
Sasaki Takumi
Yamada Masamichi
Hitachi , Ltd.
Koval Melissa J.
Tupper Robert S.
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