Magnetic head and manufacturing method thereof

Details Magnetic head and manufacturing method thereof Magnetic head and manufacturing method thereof

2005-04-27

2009-06-09

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S122000, C360S125140

Reexamination Certificate

active

07545603

ABSTRACT:
A magnetic head and a manufacturing method thereof which can suppress side fringing and permeation of a recording magnetic field in the first direction while maintaining the intensity of a recording magnetic field. By making a length of a trailing upper surface of a front portion in a height direction longer than a length of a leading lower surface of the front portion in the height direction, a generated magnetic field of the trailing upper surface can be comparatively weakened, to suppress side fringing and magnetic field permeation of a recording magnetic field. The recording magnetic field can be kept large enough by shortening the length of the leading lower surface in the height direction to intensify a generated magnetic field generated from the leading side.

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Notice of Preliminary Rejection for corresponding Japanese Patent Application Serial No. 2004-135384, dated Jul. 24, 2007.
Office Action issued in corresponding Japanese Patent Application No. 2004-135384; issued on Mar. 25, 2008.

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