Magnetic recording head

Details Magnetic recording head Magnetic recording head

2005-11-22

2005-11-22

Davis, David (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06967823

ABSTRACT:
A magnetic recording head includes an upper shield layer, a lower shield layer, a magnetoresistive film interposed between the upper shield layer and the lower shield layer, and a pair of leads electrically coupled to the magnetoresistive film, in which a pair of side shield layers constituted by portions of the upper shield layer is formed on both sides of the magnetoresistive film, and a spacing between each side shield layer and the magnetoresistive film is formed to be narrower than twice of a spacing between the upper shield layer and the lower shield layer, thereby a side reading amount can be made smaller than a conventional side reading value determined from the spacing between the upper and lower shield layers and a magnetic spacing between the head and a medium.

REFERENCES:
patent: 6023395 (2000-02-01), Dill et al.
patent: 6680829 (2004-01-01), Chen et al.
patent: 3-125311 (1990-09-01), None
patent: 6-267027 (1993-03-01), None
patent: 7-057223 (1994-07-01), None
patent: 11-259824 (1998-03-01), None
Thomas C. Anthony, Steven L. Naberhuis, James A. Brug, Manoj K. Bhattacharyya, Lung T. Tran, Victor W. Hesterman and Gerald G. Lopatin, “Dual Strip Magnetoresistive Heads for High Density Recording”, IEEE Transactions on Magnetics, vol. 30, No. 2, Mar. 1994, pp. 303-308.

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