Perpendicular magnetic recording head and method of...

Details Perpendicular magnetic recording head and method of... Perpendicular magnetic recording head and method of...

2011-06-07

2011-06-07

Castro, Angel A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07957096

ABSTRACT:
In a perpendicular magnetic recording head comprising a main magnetic pole layer and a return yoke layer which are laminated with a magnetic gap layer interposed therebetween, a nonmagnetic throat height determining layer and a return yoke reinforcement layer made of a magnetic material having a saturated magnetic flux density higher than that of the return yoke layer are provided on the magnetic gap layer. The nonmagnetic throat height determining layer has a front end face parallel to the medium-opposing surface at a position retracted by a desirable throat height from the medium-opposing surface. The return yoke reinforcement layer is formed directly under the return yoke layer so as to extend at least from the front end face of the nonmagnetic throat height determining layer to the upper face thereof, and is exposed at the medium-opposing surface between the magnetic gap layer and return yoke layer.

REFERENCES:
patent: 6657816 (2003-12-01), Barr et al.
patent: 7307814 (2007-12-01), Seagle et al.
patent: 7365942 (2008-04-01), Sasaki et al.
patent: 7375925 (2008-05-01), Sasaki et al.
patent: 7468862 (2008-12-01), Sasaki et al.
patent: 7633714 (2009-12-01), Sasaki et al.
patent: 7835111 (2010-11-01), Flint et al.
patent: 2003/0058583 (2003-03-01), Lam et al.
patent: 2007/0139819 (2007-06-01), Yazawa et al.
patent: A-2002-352402 (2002-12-01), None
patent: A-2004-318949 (2004-11-01), None

Affiliated with

Also associated with

Rating

Perpendicular magnetic recording head and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perpendicular magnetic recording head and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpendicular magnetic recording head and method of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2717894