Flux closed single pole perpendicular head for ultra narrow...

Details Flux closed single pole perpendicular head for ultra narrow... Flux closed single pole perpendicular head for ultra narrow...

2006-06-06

2006-06-06

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Reexamination Certificate

active

07057837

ABSTRACT:
A single pole perpendicular write head is provided comprising an inductive write head pole structure comprising a layered structure alternating a plurality of ferromagnetic layers with a plurality of antiparallel coupling layers to form an antiparallel coupled ferromagnetic stack. The antiparallel coupling of the ferromagnetic layers when the head is not writing forms a flux closed magnetic configuration of the write pole resulting in reduction or elimination of stray remanence fields at the pole tip region that may cause unwanted data erasure at the disk surface.

REFERENCES:
patent: 4762755 (1988-08-01), Shiiki et al.
patent: 4814921 (1989-03-01), Hamakawa et al.
patent: 4935311 (1990-06-01), Nakatani et al.
patent: 5032945 (1991-07-01), Argyle et al.
patent: 5313356 (1994-05-01), Ohkubo et al.
patent: 5663857 (1997-09-01), Kumura et al.
patent: 2003/0197976 (2003-10-01), Van der Heijden et al.
patent: 57-117119 (1982-07-01), None
patent: 60-057515 (1985-04-01), None
patent: 60-136007 (1985-07-01), None
patent: 1-283907 (1989-11-01), None
patent: 5-29172 (1993-02-01), None
patent: 7-135111 (1995-05-01), None

Affiliated with

Also associated with

Rating

Flux closed single pole perpendicular head for ultra narrow... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flux closed single pole perpendicular head for ultra narrow..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flux closed single pole perpendicular head for ultra narrow... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3697987