Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-06-21
2011-06-21
Kim, Paul D (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603130, C029S603140, C029S603150, C029S603180, C216S062000, C216S065000, C216S066000, C360S121000, C360S122000, C360S317000, C451S005000, C451S041000
Reexamination Certificate
active
07963024
ABSTRACT:
A method for manufacturing a magnetic write head for perpendicular magnetic data recording. The method allows an upper write coil to be formed directly on a conformally deposited layer of non-magnetic material such as alumina which has been deposited over a magnetic shaping layer and write pole. The method allows the write coil to be constructed without the need for the deposition of a thick alumina fill layer and subsequent chemical mechanical polishing. This, therefore, avoids the necessity of such a chemical mechanical polishing step.
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Ise et al., “High Writing-Sensitivity Single-Pole Head With Cusp-Field Coils” IEEE Transactions on Magnetics, vol. 36, No. 5, Sep. 2000.
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D
Zilka-Kotab, PC
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