Perpendicular recording magnetic head

Details Perpendicular recording magnetic head Perpendicular recording magnetic head

2008-03-24

2011-11-08

Klimowicz, Will J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125080, C360S125120

Reexamination Certificate

active

08054580

ABSTRACT:
Embodiments of the present invention provide a perpendicular recording magnetic head having a narrow track width, high recording magnetic field intensity, and a good recording magnetic field distribution. According to one embodiment, a perpendicular recording magnetic head includes a read section and a write section. The write section includes a main magnetic pole layer, a lower sub magnetic pole layer, an upper sub magnetic pole layer, a pedestal magnetic layer, and a coil conductor generating a magnetic flux in the main magnetic pole layer. The write section further includes lower and upper auxiliary magnetic pole layers disposed on a leading side and a trailing side, respectively, relative to a medium moving direction, adjacent to the main magnetic pole layer. The lower and upper auxiliary magnetic pole layers are retracted from an air bearing surface. The upper auxiliary magnetic pole layer is retracted from the air bearing surface less than the lower auxiliary magnetic pole layer.

REFERENCES:
patent: 2002/0176214 (2002-11-01), Shukh et al.
patent: 2005/0013044 (2005-01-01), Hirata et al.
patent: 2005/0128637 (2005-06-01), Johnston et al.
patent: 2005/0141137 (2005-06-01), Okada et al.
patent: 2005/0286170 (2005-12-01), Hirata et al.
patent: 2006/0002018 (2006-01-01), Fukui et al.
patent: 2006/0002021 (2006-01-01), Li et al.
patent: 2006/0087765 (2006-04-01), Iwakura et al.
patent: 2006/0098339 (2006-05-01), Koyama et al.
patent: 2006/0203379 (2006-09-01), Hirata et al.
patent: 2006/0203381 (2006-09-01), Okada et al.
patent: 2006/0221497 (2006-10-01), Okada et al.
patent: 2007/0206323 (2007-09-01), Im et al.
patent: 2007/0217069 (2007-09-01), Okada et al.
patent: 2007/0258167 (2007-11-01), Allen et al.
patent: 63-177307 (1988-07-01), None
patent: 07-153013 (1995-06-01), None
patent: 2004-127480 (2004-04-01), None
patent: 2006-277834 (2006-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4294122