Magnetic recording head having a plurality of shield layers

Details Magnetic recording head having a plurality of shield layers Magnetic recording head having a plurality of shield layers

2008-05-27

2008-05-27

Heinz, A. J. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S125330, C360S317000

Reexamination Certificate

active

10943232

ABSTRACT:
Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.

REFERENCES:
patent: 6292334 (2001-09-01), Koike et al.
patent: 6430009 (2002-08-01), Komaki et al.
patent: 6477008 (2002-11-01), Chang et al.
patent: 7019943 (2006-03-01), Sato
patent: 7031119 (2006-04-01), Watanabe et al.
patent: 7145750 (2006-12-01), Kimura et al.
patent: 2004-326990 (2004-11-01), None
patent: 2002-0041578 (2002-06-01), None
Notice to Submit Response of the Korean Intellectual Property Office dated Oct. 31, 2005.

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