Thin-film magnetic head with improved external magnetic...

Details Thin-film magnetic head with improved external magnetic... Thin-film magnetic head with improved external magnetic...

2006-03-28

2006-03-28

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Core

C360S319000

Reexamination Certificate

active

07019943

ABSTRACT:
A thin-film magnetic head comprises an inductive type electromagnetic transducer having a first magnetic pole, a second magnetic pole, and a thin-film coil. A recording shield layer made of a magnetic material is formed on the side of the second magnetic pole opposite from the first magnetic pole. A recording shield gap layer made of a nonmagnetic material is formed between the second magnetic pole and the recording shield layer. By way of the recording shield gap layer, the recording shield layer covers at least both lateral parts of the second magnetic pole on the side of the second magnetic pole facing a recording medium.

REFERENCES:
patent: 4656546 (1987-04-01), Mallory
patent: 5075956 (1991-12-01), Das
patent: 6762910 (2004-07-01), Knapp et al.
patent: 6785097 (2004-08-01), Okada et al.
patent: 04-109415 (1992-04-01), None
Matsuzaki, “Magnetic Head Now and Future”, Information Technology Research Center, pp. 9-15, 2002 w/ English Trans.

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