Dynamic magnetic information storage or retrieval – Head – Head surface structure
Patent
1987-12-08
1990-04-10
Severin, David J.
Dynamic magnetic information storage or retrieval
Head
Head surface structure
360119, G11B 5187
Patent
active
049165631
ABSTRACT:
In a magnetic head of the type comprising a pair of core halves which are disposed in opposing and aligned relationship leaving a magnetic gap therebetween, a magnetic-gap-defining surface of at least one core block being deposited with a thin magnetic film, grooves are formed in order to define the length of the magnetic gap at the recording medium sliding surface; a first nonmagnetic material is filled at the bottom portion of each groove and filling a second nonmagnetic material having a low melting point with respect to that of the first nonmagnetic material in the remaining portion of each groove. The nonmagnetic material having a relatively high melting point is disposed at both sides of the magnetic gap so that nonuniform wear of a portion in the vicinity of the magnetic gap can be substantially avoided. In addition, the nonmagnetic material having a low melting point is disposed at a portion which is spaced apart from the magnetic gap by a small distance so that the bonding of a pair of core halves becomes reliable.
REFERENCES:
patent: 4704788 (1987-11-01), Eckstein
patent: 4755899 (1988-07-01), Kobayashi et al.
patent: 4766039 (1988-08-01), Otomo et al.
Canon Denshi Kabushiki Kaisha
Severin David J.
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