Process to form an ABS through aggressive stitching
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United States of America Patent
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-
Dec 15, 2009
Grant Date -
Nov 22, 2007
app pub date -
Jul 26, 2007
filing date -
Feb 19, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A manufacturing process is provided where aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electroplated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.
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