Magnetic recording system with improved magnetic shield

Details Magnetic recording system with improved magnetic shield Magnetic recording system with improved magnetic shield

2005-04-12

2008-08-05

Davis, David D (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

07408738

ABSTRACT:
Embodiments of the invention efficiently improve the stray field robustness without changing the size or weight of the drive on a large scale. Because a stray field concentrates on a magnetic field element, a symptom in which already recorded data is erased is prevented. According to one embodiment, in a magnetic recording system that uses a perpendicular recording medium having a soft magnetic under layer, a soft magnetic shield is provided on an upper part and a side of a slider on which a magnetic head is mounted, and a distance C between the shield and the medium is made smaller than a distance A or B between the shield and the slider.

REFERENCES:
patent: 5844746 (1998-12-01), Uwabo et al.
patent: 2002/0034029 (2002-03-01), Aoyagi et al.
patent: 05-041075 (1993-02-01), None
patent: 06-036275 (1994-02-01), None
patent: 06-068461 (1994-03-01), None
patent: 2003-123210 (2003-04-01), None

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