Perpendicular magnetic head with yoke overlapping inner side...

Details Perpendicular magnetic head with yoke overlapping inner side... Perpendicular magnetic head with yoke overlapping inner side...

2005-05-12

2008-09-23

Renner, Craig A (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125140, C360S125150, C360S125210

Reexamination Certificate

active

07428123

ABSTRACT:
A perpendicular magnetic recording head includes a first magnetic portion, a second magnetic portion formed with a gap from the first magnetic portion, and a coil layer located in the gap between the first magnetic portion and the second magnetic portion for applying a recording magnetic field to the first magnetic field and the second magnetic field. The yoke layer is formed on the second magnetic portion, a width whose direction is orthogonal to the height direction of a front end of the yoke layer becomes larger gradually or continuously as going in the height direction, and the width becomes larger gradually or continuously as going farther from the second magnetic portion.

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Notification of Reasons for Refusal for corresponding Japanese Patent Application Serial No. 2004-377393, dated Dec. 19, 2006.
Notice of Preliminary Rejection for corresponding Japanese Patent Application Serial No. 2004-377393, dated Oct. 16, 2007.

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