Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-06-14
2005-06-14
Ometz, David L. (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
06906898
ABSTRACT:
An object of the present invention is to produce a differential detection read sensor for perpendicular magnetic recording using two magnetic resistance elements; and to provide a thin film head for perpendicular recording using the read sensor and a magnetic recording apparatus having high recording density equipped with the head. The object of the present invention can be achieved by a reproducing sensor comprising a pair of magnetic resistance layers; a non-magnetic conductive layer; a pair of conductive layers; and a pair of magnetic shields.
REFERENCES:
patent: 5859753 (1999-01-01), Ohtsuka et al.
patent: 6128166 (2000-10-01), Tanaka et al.
patent: 6185079 (2001-02-01), Gill
patent: 6275363 (2001-08-01), Gill
patent: 6392849 (2002-05-01), Maruyama et al.
patent: 6462917 (2002-10-01), Terunuma et al.
patent: 6469926 (2002-10-01), Chen
patent: 6657823 (2003-12-01), Kawato
patent: 6680827 (2004-01-01), Li et al.
patent: 10-334422 (1997-05-01), None
patent: 2002-163807 (2001-10-01), None
patent: WO 97/44781 (1997-05-01), None
Shun-ichi Iwasaki, “Perpendicular Magnetic Recording—Evolution and future”, IEEE Transactions on Magnetics, vol. Mag-20, No. 5, Sep. 1984, pp. 657-662.
R.S. Indeck, J. H. Judy and S. Iwasaki, “A Magnetoresistive Gradiometer”, IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2617-2619.
H.S. Gill, V.W. Hesterman, G.J. Tarnopolsky and L. T. Tran, P.D. Frank, H. Hamilton, A Magnetoresistive Gradiometer for Detection of Perpendicularly Recorded Magnetic Transitions:, J. Appl. Phys. 65 (1), Jan. 1, 1989, pp. 402-404.
Hitachi Global Storage Technologies Japan Ltd.
Ometz David L.
LandOfFree
Differential detection read sensor, thin film head for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential detection read sensor, thin film head for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential detection read sensor, thin film head for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3510975