Thin-film magnetic head and method of manufacturing same

Details Thin-film magnetic head and method of manufacturing same Thin-film magnetic head and method of manufacturing same

2005-08-09

2005-08-09

Tupper, Robert S. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

C360S123090

Reexamination Certificate

active

06927939

ABSTRACT:
A thin-film magnetic head comprises a bottom pole layer, a top pole layer, a recording gap layer, and a thin-film coil. The thin-film magnetic head further comprises a coupling portion which is located away from an air bearing surface and establishes coupling between the bottom pole layer and the top pole layer. The coupling portion has an end face facing toward the air bearing surface. The end face includes a curved surface convex toward the medium facing surface. A part of the thin-film coil, which is disposed between the end face and the air bearing surface, has a minimum width of the thin-film coil in a position on a virtual line connecting the end face and the air bearing surface in the shortest distance, and increases in width with distance from the virtual line.

REFERENCES:
patent: 6043959 (2000-03-01), Crue et al.
patent: 6191916 (2001-02-01), Sasaki
patent: 6317288 (2001-11-01), Sasaki
patent: 6646828 (2003-11-01), Sasaki
patent: 6674610 (2004-01-01), Thomas et al.
patent: 6680815 (2004-01-01), Sasaki
patent: 6742241 (2004-06-01), Sasaki
patent: A 11-283215 (1999-10-01), None

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