Magnetic head and method of manufacturing the same
AssigneeFujitsu Limited
InventorsTakashi Ito, Mitsumasa Okada, Masashi Yanagawa
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Abstract
The magnetic head of the present invention has a narrow upper magnetic pole and capable of restricting side erasure and record bleeding. The magnetic head for writing data on a recording medium comprises: an upper magnetic pole including a pole section, which faces the recording medium and has a prescribed width; and a lower magnetic pole including grooves, which are respectively formed on the both sides of the pole section, wherein level of edges of the grooves are lower than that of an upper face of the lower magnetic pole.
Claims3
A magnetic head for writing data on a recording medium,
- comprising:
- an upper magnetic pole including a pole section, which faces the recording medium and has a prescribed width;
- and
- a lower magnetic pole including grooves, which are respectively formed on the both sides of said pole section,
- wherein level of edges of said grooves are lower than that of an upper face of said lower magnetic pole.
A method of manufacturing a magnetic head for writing data on a recording medium,
- comprising the steps of:
- forming an upper magnetic pole on a lower magnetic pole with a gap layer;
- trimming parts of said lower magnetic pole respectively located on the both sides of said upper magnetic pole, by an ion mill, until reaching prescribed depth;
- and
- trimming both side faces of said upper magnetic pole and further trimming the parts of said lower magnetic pole on the both sides of said upper magnetic pole by a focussed ion beam.
A method of manufacturing a magnetic head for writing data on a recording medium,
- comprising the steps of:
- forming an upper magnetic pole on a lower magnetic pole with a gap layer;
- trimming both side faces of said upper magnetic pole and parts of said lower magnetic pole respectively located on the both sides of said upper magnetic pole by a focussed ion beam;
- further trimming the parts of said lower magnetic pole on the both sides of said upper magnetic pole, by an ion mill, until reaching prescribed depth.
Dependencies are inferred from the claim text.