Perpendicular magnetic recording head and perpendicular...

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

2011-03-08

2011-03-08

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125300, C360S319000

Reexamination Certificate

active

07903371

ABSTRACT:
A perpendicular magnetic recording head includes a first magnetic layer having a main magnetic pole exposed at a medium-facing surface that faces a recording medium; a second magnetic layer that faces the first magnetic layer with a nonmagnetic layer interposed therebetween; and a coil layer for applying a recording magnetic field to the first magnetic layer. The second magnetic layer includes a relatively thick edge portion, whereby the edge-write magnetic field is reduced and the external magnetic field resistance is increased.

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Search Report for IDS for our case 06-00719.
Notification of Reason for Rejection for Japanese Patent Application 2006-199726, dispatched May 27, 2008, 2 pages.

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