Thin-film magnetic head having a width-thickness configured...

Details Thin-film magnetic head having a width-thickness configured... Thin-film magnetic head having a width-thickness configured...

2009-01-05

2010-02-23

Heinz, A. J. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125220, C360S125250, C029S603070

Reexamination Certificate

active

07667928

ABSTRACT:
A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness H1/3sidethereof in a range of widthwise ⅓W size positioned at both ends thereof is larger than the average thickness Hmof the whole write shield layer from the air bearing surface up to the rear (H1/3side>Hm), so that the so-called external magnetic field resistance is improved, and inadvertent erasure of the information already recorded in the recording medium is avoided as much as possible. Besides, the PTP (pole tip protrusion) phenomenon arising from the generation of heat from coils, and external temperature changes can be held back.

REFERENCES:
patent: 6687084 (2004-02-01), Takahashi et al.
patent: 2003/0048579 (2003-03-01), Kikuchi et al.
patent: 2004/0212923 (2004-10-01), Taguchi
patent: 2005/0280936 (2005-12-01), Sasaki et al.
patent: 0 360 978 (1990-04-01), None
patent: 2-66710 (1990-03-01), None
patent: 2001-250204 (2001-09-01), None
patent: 2002-197615 (2002-07-01), None
patent: 2004-326990 (2004-11-01), None
patent: 2005-92929 (2005-04-01), None

Affiliated with

Also associated with

Rating

Thin-film magnetic head having a width-thickness configured... 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 having a width-thickness configured..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin-film magnetic head having a width-thickness configured... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4232483