Magnetic head for perpendicular magnetic recording system

Details Magnetic head for perpendicular magnetic recording system Magnetic head for perpendicular magnetic recording system

1987-07-31

1989-06-13

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360125, G11B 560

Patent

active

048397610

ABSTRACT:
A disc drive is disclosed incorporating a non-magnetic slider, a thin film main pole on the leading face thereof and a C-shaped flux collector extending forward from that same face, with the lower portion of the C-shaped flux collector being positioned slightly above the recording surface. The main pole, when energized, disperses the magnetic flux vertically through the "hard" medium and then through the "soft" medium to be returned to and collected by the foot of the C-shaped flux collector. In a preferred embodiment, the corners of this lower or foot portion of the flux collector are not sharp, to prevent flux concentration at any of those corners. In this design, the energizing coil may be wound about either a yoke which connects the C-shaped flux collector to the non-magnetic slider or the back portion of the flux collector itself.

REFERENCES:
patent: 4742413 (1988-05-01), Schewe

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