Perpendicular magnetic recording head and perpendicular...

Details Perpendicular magnetic recording head and perpendicular... Perpendicular magnetic recording head and perpendicular...

2011-07-19

2011-07-19

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S317000, C360S125200, C360S125210

Reexamination Certificate

active

07983010

ABSTRACT:
A perpendicular magnetic recording head according to the present invention is composed of a first magnetic layer having a main magnetic pole exposed at a facing surface opposite a recording medium, a second magnetic layer adjacent to the first magnetic layer with an intermediary non-magnetic layer disposed therebetween, and a coil layer for applying a recording magnetic field to the first magnetic layer. Since the second magnetic layer has a shape including a substantially arched portion in its cross section along a height direction, it becomes possible to keep an Edge Write magnetic field in a low level and improve external magnetic field resistance.

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patent: 2006-199727 (2006-08-01), None
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Search Report for IDS for our case 06-00743.
Notification of Reason for Rejection for Japanese Patent Application 2006-199727, dispatched May 7, 2008, 2 pages.

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