Process for fabricating an arbitrary pattern write head

Details Process for fabricating an arbitrary pattern write head Process for fabricating an arbitrary pattern write head

1996-07-25

1997-07-29

Pianalto, Bernard

Coating processes

Electrical product produced

Coil or winding

427125, 4271266, 427127, 427128, 427130, 427131, 427132, 427264, 427265, 427270, 427271, 427331, 427404, 4274192, B05D 512

Patent

active

056520158

ABSTRACT:
An arbitrary pattern write head assembly for writing timing-based servo patterns on magnetic storage media is provided, comprising: (a) a first pole piece comprising a substrate comprising a magnetic material, said substrate having a major surface; (b) a plurality of electrically conducting windings formed on the major surface; and (c) a second pole piece formed on the substrate, with a portion thereof formed above the plurality of electrically conducting windings and electrically insulated therefrom, the second pole piece having at least one opening therethrough defining a gap above the electrically conducting windings and the substrate, the second pole piece comprising at least two layers, each layer comprising a magnetic material. A method of batch fabricating servo writer heads is also provided for batch fabrication of servo writer heads at a very low cost. The method enables fabrication of heads capable of azimuthal recording commonly practiced in the video recording art. Hard nitrided Fe/NiFe poletip materials are used to minimize wear in tape head use.

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