International Business Machines Corporation

Hitachi Global Storage Technologies Netherlands B.v.

Benjamin L Wang

Howard Gordon Zolla

Patrick Rush Webb

James Bernard Kruger

Murali Ramasubramanian

Gregory Breyta

Douglas Johnson Werner

Alfred Floyd Renaldo

Daniel Wayne Bedell

Linden James Crawforth

Timothy James Minvielle

April Dawn Hixson-Goldsmith

Tom King Harris, Iii

Method of plating using a polymeric barrier layer including a polyphenolic polymer which has a repeating unit of the formula: wherein R, R, R, R, and Rare individually hydrogen, a hydroxy group or an azo dye.

Plating using copolymer

An article is formed as a substrate having a projection extending outwardly therefrom. The article may be a magnetic recording head and the projection a write pole. The projection has a width in a thinnest dimension measured parallel to a substrate surface of no more than about 0.3 micrometers and a height measured perpendicular to the substrate of not less than about 5 times the width. The article is fabricated by forming an overlying structure on the substrate with an edge thereon, depositing a replication layer lying on the edge, depositing a filler onto the edge and the substrate, so that the filler, the replication layer, and the overlying structure in combination comprise a continuous layer on the substrate, selectively removing at least a portion of the replication layer from a free surface of the continuous layer inwardly toward the substrate, to form a defined cavity, and depositing a projection material into the defined cavity to form the projection.

Method of fabricating a narrow projection such as a write pole extending from a substrate

An onboard electronic lapping guide for lapping a magneto-resistive head having a magneto-resistive sensor element disposed for electrical communication with a pair of sensor electrical leads. The lapping guide includes an electronic lapping guide resistive element disposed for electrical communication with the sensor electrical leads. The resistive element has a predetermined height in a lapping direction and is adapted to produce an electrical resistance in the presence of a lapping current that increases as said resistive element height is reduced during lapping. A lapping method and a method of forming the onboard electronic lapping guide are also disclosed.

Onboard multiphase electronic lapping guide design for MR heads

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San Jose, CA, United States of America

Benjamin L Wang