Perpendicular magnetic recording head

Details Perpendicular magnetic recording head Perpendicular magnetic recording head

2008-05-23

2011-11-08

Cao, Allen (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

08054581

ABSTRACT:
To provide a perpendicular magnetic recording head which can prevent unintentional recording and erasing from occurring on recording media.In a perpendicular magnetic recording head comprising a pair of side shield layers made of a soft magnetic material on both sides in a track width direction of a magnetic pole part of a main magnetic pole layer, the pair of side shield layers have a front end face exposed at a medium-opposing surface and a side end face extending from one end part of the front end face remote from the magnetic pole part in the track width direction to the deeper side in a height direction, while the front end face and the side end face form an angle of 90° or greater therebetween.

REFERENCES:
patent: 7920359 (2011-04-01), Maruyama et al.
patent: 2003/0174834 (2003-09-01), Kida
patent: 2005/0264931 (2005-12-01), McFadyen
patent: 2007/0274003 (2007-11-01), Ota et al.
patent: A-2005-092929 (2005-04-01), None

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