Method for making a perpendicular magnetic recording write...

Details Method for making a perpendicular magnetic recording write... Method for making a perpendicular magnetic recording write...

2007-12-11

2010-02-09

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603230, C029S603120, C029S603140, C029S603160, C360S123110, C360S123120

Reexamination Certificate

active

07657992

ABSTRACT:
A method of making a perpendicular magnetic recording (PMR) head with single or double coil layers and with a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.

REFERENCES:
patent: 5075956 (1991-12-01), Das
patent: 6128166 (2000-10-01), Tanaka et al.
patent: 6278591 (2001-08-01), Chang et al.
patent: 6583966 (2003-06-01), Han et al.
patent: 6591480 (2003-07-01), Chen et al.
patent: 6884730 (2005-04-01), Sasaki et al.
patent: 7221539 (2007-05-01), Takano et al.
patent: 7363700 (2008-04-01), Matono
patent: 7492551 (2009-02-01), Matono
patent: 2002/0071208 (2002-06-01), Batra et al.
patent: 07311917 (1995-11-01), None
patent: 08-147625 (1996-06-01), None
patent: 2001-250204 (2001-09-01), None
patent: 2002-092820 (2002-03-01), None

Affiliated with

Also associated with

Rating

Method for making a perpendicular magnetic recording write... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making a perpendicular magnetic recording write..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a perpendicular magnetic recording write... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4189882