Magnetic head device

Details Magnetic head device Magnetic head device

1999-03-04

1999-12-28

Tupper, Robert S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360103, G11B 5105, G11B 5265, G11B 560

Patent

active

060090510

ABSTRACT:
In a magnetic head device, I-shaped side and center cores are fitted to a slider, and magnetic gaps are formed by a part of the slider. Therefore, a magnetic path can be shortened, and the magnetic head device is constructed so as not to leave strains on the cores, so that the core loss is low. In addition, a back core (back plate) having a wide area is provided, so that heat-dissipating effect is enhanced. Therefore, magnetic field-generating efficiency can be improved in wide frequency bands. Further, by decreasing the number of turns of a coil, the inductance, the impedance, and the loss factor can be reduced.

REFERENCES:
patent: 3940798 (1976-02-01), Rumpler
patent: 5151837 (1992-09-01), Wakasugi et al.
patent: 5444678 (1995-08-01), Ogata
patent: 5485336 (1996-01-01), Matsunaga
patent: 5572490 (1996-11-01), Kazama

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