Magnetic head

Details Magnetic head Magnetic head

1997-12-17

1999-12-14

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428692, 428694R, 428694TS, 428900, 428694TM, 360113, 360126, 324252, G11B 566

Patent

active

060014687

ABSTRACT:
A magnetic head comprises a lower magnetic pole, an insulating film formed on the lower magnetic pole, a coil arranged over the lower magnetic pole so as to penetrate the insulating film, and an upper magnetic pole having a pole at its top end so as to have a clearance against the lower magnetic pole and formed of magnetic material having saturation magnetic flux density Bs (T) and electric resistivity .rho. (.mu..OMEGA.cm) on the insulating film to have a film thickness .delta. (.mu.m), and both sides of the upper magnetic pole being formed to extend from root portions of the pole at a taper angle .theta. (degree), whereby the upper magnetic pole can satisfy a condition of (1+tan .theta.).delta.Bs/.sqroot..rho..ltoreq.1.0.

REFERENCES:
patent: 4743491 (1988-05-01), Asada
patent: 5302459 (1994-04-01), Sugenoya

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