Method and apparatus for simultaneous write head planarization a

Details Method and apparatus for simultaneous write head planarization a Method and apparatus for simultaneous write head planarization a

1993-11-10

1996-01-23

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360113, 360123, G11B 531, G11B 517, G11B 539

Patent

active

054869684

ABSTRACT:
Disclosed is a planarizing layer for use in an MR read/inductive write head combination, and a method for constructing the same. In the preferred embodiment, a planarizing layer comprising a plurality of planar sections of conductive material is formed in the plane of the lower pole piece of an inductive head. The planar sections, in cooperation with the lower pole piece, provide a substantially planar surface on which to form the inductive coil. Two of the planar sections are electrically coupled to respective MR leads, and include protrusions extending from the perimeter of the inductive coil to enable electrical access by a pair of read terminal pads. A third planar section is electrically coupled to the inner coil tap of the inductive coil, and includes a protrusion extending from the perimeter of the inductive coil to enable electrical access by a write terminal pad.

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Anonymous, "PL Permalloy Planarization for Coil Plating", Research Disclosure N271, Nov. 1986.

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