Thin film magnetic head and magnetic recording apparatus

Details Thin film magnetic head and magnetic recording apparatus Thin film magnetic head and magnetic recording apparatus

2006-12-26

2006-12-26

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125020, C360S122000

Reexamination Certificate

active

07154707

ABSTRACT:
Provided is a thin film magnetic head capable of securing recording characteristics even in the case where a return pole layer is disposed on a medium-outgoing side of the pole layer. The return yoke layer is disposed on a trailing side of the pole layer, and a neck height NH is within a range of NH≦W1(a width of a front end portion in a main pole layer)+0.05 μm, and a height ratio (a ratio of the neck height NH to a throat height TH) NH/TH is within a range of 0.5<NH/TH<1.6. Thereby, the neck height NH and the height ratio NH/TH which have an influence on the recording characteristics can become appropriate, so even if the thickness of the gap layer is 0.2 μm or less to bring the return yoke layer closer to the pole layer, overwrite characteristics can be secured.

REFERENCES:
patent: 4656546 (1987-04-01), Mallory
patent: 6101067 (2000-08-01), Matsuzono et al.
patent: 6594112 (2003-07-01), Crue et al.
patent: 6884148 (2005-04-01), Dovek et al.
patent: 2002/0170165 (2002-11-01), Plumer et al.
patent: 2005/0068673 (2005-03-01), Lille
patent: A 5-325137 (1993-12-01), None
patent: A 6-236526 (1994-08-01), None
patent: 08153305 (1996-06-01), None
patent: 2002100001 (2002-04-01), None
patent: A-2002-100005 (2002-04-01), None
patent: A-2002-100007 (2002-04-01), None
patent: A-2002-298309 (2002-10-01), None

Affiliated with

Also associated with

Rating

Thin film magnetic head and magnetic recording apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3660283