Dynamic magnetic information storage or retrieval – Head – Core
Patent
1990-06-06
1993-06-22
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Core
360110, 360120, G11B 5147
Patent
active
052220060
ABSTRACT:
A magnetic head has a core body for defining a magnetic path, a pair of magnetic thin films deposited on a pair of opposing surfaces of the core body, a gap member deposited between the pair of opposing surfaces to define a magnetic gap, and a bonding member such as a glass disposed between the pair of magnetic thin films, thereby bonding the magnetic thin films. The angle between the surface on which the magnetic thin film is deposited and one side surface of the core body is made greater than in conventional magnetic heads. The bonding member directly bonds the pair of opposing surfaces of the core body to each other and not through the magnetic thin films. The softening temperature of the bonding glass or bonding member is varied in such a way that the softening temperatures are different between a portion in the vicinity of the magnetic gap and a portion remote from the magnetic gap, whereby the softening temperature at the above-described portion remote from the magnetic gap has a low softening temperature.
REFERENCES:
patent: 4701819 (1987-10-01), Inagoya et al.
patent: 5086553 (1992-02-01), Goto et al.
Auger Spectroscopy Analysis of Metal/Ferrite Interface Layer in Metal-In-Gap Magnetic Head IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988.
Canon Denshi Kabushiki Kaisha
Wolff John H.
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