Thin film magnetic head having magnetic pole edge layer for...

Details Thin film magnetic head having magnetic pole edge layer for... Thin film magnetic head having magnetic pole edge layer for...

2007-12-18

2007-12-18

Castro, Angel (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C029S603150, C360S317000

Reexamination Certificate

active

10237860

ABSTRACT:
There is provided a thin film magnetic head, with letting a distance of a portion, where a width of a track portion in an upper magnetic pole changes, from a flying plane from a medium be Ly, and letting a distance of a portion, where a distance between right and left of a surface portion in a lower magnetic pole in a track width direction is wider than the width of the upper magnetic pole in the track width direction, from the flying plane from a medium be Tp, by creating a thin film magnetic head that is equipped with a recording head that has a relation of Tp≦Ly, it becomes possible to reduce a needless leakage magnetic field in the track width direction with securing magnetic field strength.

REFERENCES:
patent: 6317289 (2001-11-01), Sasaki
patent: 6525905 (2003-02-01), Sasaki
patent: 6549370 (2003-04-01), Kamijima
patent: 6603641 (2003-08-01), Sasaki
patent: 6624971 (2003-09-01), Sasaki
patent: 6801407 (2004-10-01), Sasaki et al.
patent: A-2000-155906 (2000-06-01), None

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