Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2011-05-31
2011-05-31
Blouin, Mark (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07952838
ABSTRACT:
A read head for a rotating magnetic storage system including concentric tracks is disclosed. The read head comprises a magnetoresistive (MR) sensor that reads information from a read track of the magnetic storage medium. First and second shields have a length greater than two tracks in a track width direction and define a gap therebetween, wherein the MR sensor is arranged in the gap. Inner magnetic portions of the first and second shields are spaced a first distance from the read track. Outer magnetic portions of the first and second shields are spaced a second distance from adjacent tracks to the read track, wherein the first distance is less than the second distance.
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Kaitsu et al; “Ultra High Density Perpendicular Magnetic Recording Technologies”; Jan. 2006; pp. 122-130.
Ito Yasuyuki
Sato Naoki
Blouin Mark
Marvell Intenational Ltd.
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