Magnetic head having a notched magnetic core portion with a zero

Details Magnetic head having a notched magnetic core portion with a zero Magnetic head having a notched magnetic core portion with a zero

1992-03-03

1994-01-04

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 543, G11B 547

Patent

active

052765750

ABSTRACT:
Each of a pair of magnetic core halves includes a substrate and a thin magnetic metal film formed on the substrate. The substrate is notched with a winding groove. The pair of the magnetic core halves are integrally bonded to each other so that a gap filling film is formed between the facing surfaces of the thin magnetic metal films. The zero depth position of the magnetic gap which is determined by the length of the facing thin magnetic metal films is offset to a magnetic recording medium sliding surface of the magnetic head from the notching start position of the winding groove on the side of the magnetic gap. Hence, the shape of the thin magnetic metal film exposed on the magnetic recording medium sliding surface is maintained constant from the initial position to the depth zero position.

REFERENCES:
patent: 4769729 (1988-09-01), Kumasaka et al.
patent: 4819113 (1989-04-01), Kubota et al.
patent: 5047885 (1991-09-01), Zama et al.

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