Magnetic head with soft magnetic shield and magnetic storage

Details Magnetic head with soft magnetic shield and magnetic storage Magnetic head with soft magnetic shield and magnetic storage

2005-12-02

2008-11-11

Chen, Tianjie (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07450349

ABSTRACT:
Embodiments of the invention avoid erasure of recorded data by concentrating stray fields on a magnetic head element. According to one embodiment, in a magnetic storage apparatus using a perpendicular recording medium with a soft magnetic under layer, a soft magnetic shield is provided so as to surround the upper parts and sides of magnetic head elements. A distance between the soft magnetic shield and the medium is shorter than that between the soft magnetic shield and the magnetic head element.

REFERENCES:
patent: 3975772 (1976-08-01), Lin
patent: 4071868 (1978-01-01), Kaminaka et al.
patent: 4656546 (1987-04-01), Mallory
patent: 4698711 (1987-10-01), Vinal
patent: 4843506 (1989-06-01), Gill et al.
patent: 4935832 (1990-06-01), Das et al.
patent: 5075956 (1991-12-01), Das
patent: 6430010 (2002-08-01), Murdock
patent: 6597545 (2003-07-01), Macken et al.
patent: 6954340 (2005-10-01), Shukh et al.
patent: 7002775 (2006-02-01), Hsu et al.
patent: 7042682 (2006-05-01), Hu et al.
patent: 7295401 (2007-11-01), Jayasekara et al.
patent: 2006/0092575 (2006-05-01), Mochizuki et al.
patent: 62129915 (1987-06-01), None
patent: 02-014410 (1990-01-01), None
patent: 02-201710 (1990-09-01), None
patent: 06-236674 (1994-08-01), None
patent: 2000-339656 (2000-12-01), None
patent: 2003-77266 (2003-03-01), None
patent: 2004-047110 (2004-02-01), None
IBM Technical Disclosure Bulletin. “Shield for Protecting Magnetic Head from Ambient AC and DC Magnetic Fields”. vol. No. 18, Issue No. 7; p. No. 2258-2259. Cross Reference: 0018-8689-18-7-2258. Dec. 1, 1975.

Affiliated with

Also associated with

Rating

Magnetic head with soft magnetic shield and magnetic storage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic head with soft magnetic shield and magnetic storage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head with soft magnetic shield and magnetic storage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4048954