Perpendicular magnetic write head with a thin wrap around...

Details Perpendicular magnetic write head with a thin wrap around... Perpendicular magnetic write head with a thin wrap around...

2011-08-16

2011-08-16

Watko, Julie Anne (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

08000059

ABSTRACT:
A magnetic write head for perpendicular magnetic recording having a thin wrap-around magnetic shield. The small thickness and forming method of the thin wrap-around magnetic shield allow it to be electroplated using a thin photoresist frame mask. The thin photoresist frame mask has better critical dimension and straight wall control than a thicker mask, which allows the wrap-around magnetic shield to be constructed with much more straight and uniform back edge for shield throat height control than is possible when forming a thicker (i.e. taller) shield. The thin wrap-around magnetic shield can be stitched to a trailing return pole to avoid magnetic saturation of the wrap-around shield.

REFERENCES:
patent: 4935832 (1990-06-01), Das et al.
patent: 7002775 (2006-02-01), Hsu et al.
patent: 7019943 (2006-03-01), Sato
patent: 7031121 (2006-04-01), Khera et al.
patent: 7070698 (2006-07-01), Le
patent: 7140095 (2006-11-01), Matono
patent: 7239478 (2007-07-01), Sin et al.
patent: 7551396 (2009-06-01), Hsu et al.
patent: 2004/0212923 (2004-10-01), Taguchi
patent: 2005/0024771 (2005-02-01), Le
patent: 2005/0083605 (2005-04-01), Hu et al.
patent: 2005/0105214 (2005-05-01), Im et al.
patent: 2005/0141137 (2005-06-01), Okada et al.
patent: 2006/0245109 (2006-11-01), Hsu et al.
patent: 2007/0019327 (2007-01-01), Maruyama et al.
patent: 2007/0030602 (2007-02-01), Matono
patent: 2007/0035885 (2007-02-01), Im et al.
patent: 2007/0115584 (2007-05-01), Balamane et al.
patent: 2007/0211377 (2007-09-01), Sasaki et al.
patent: 2008/0144215 (2008-06-01), Hsiao et al.
patent: 2010/0157472 (2010-06-01), Hsiao et al.
patent: 2004348928 (2004-12-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2702877