Disk device and data-erasing method

Details Disk device and data-erasing method Disk device and data-erasing method

2005-05-31

2005-05-31

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

C360S067000

Reexamination Certificate

active

06900956

ABSTRACT:
A magnetic circuit is provided in an enclosure that can efficiently generate magnetic flux from the enclosure, configuring a magnetic disk, to a magnetic disk. Thus, by providing such a magnetic circuit, a magnetic field different from that in other enclosure parts, that is, a local magnetic field, is generated from the magnetic circuit in case the disk device is set in an external magnetic field. Hence, this local magnetic field can effectively erase data in the magnetic disk. In particular, since the local magnetic field is generated even if the external magnetic field is weak, it is possible to not only suppress the demagnetization of permanent magnets used in the spindle motor at minimum, but also effectively erase data in the magnetic disk.

REFERENCES:
patent: 4703379 (1987-10-01), Bogdanski
patent: 5146447 (1992-09-01), Nagasato et al.
patent: 5657190 (1997-08-01), Araki et al.
patent: 5870260 (1999-02-01), Davies et al.
patent: 6046881 (2000-04-01), Tielemans et al.
patent: 6175469 (2001-01-01), Ahmad et al.
patent: 07-029106 (1995-01-01), None
patent: WO98/49674 (1998-11-01), None

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