System and apparatus for assembly level disk erase

Details System and apparatus for assembly level disk erase System and apparatus for assembly level disk erase

2006-05-23

2006-05-23

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

C360S057000, C360S055000, C361S143000, C361S149000

Reexamination Certificate

active

07050255

ABSTRACT:
A disk erase apparatus for erasing information on one or more disks in a disk drive uses a high strength magnetic field to erase the disks while the disks are in the HDD assembly. The design of the head disk enclosure provides a reduced thickness in a localized region over the disks. This allows a narrower working magnetic gap of the HDD level disk erase apparatus. The localized region of the HDD may be a formed indentation on the top cover, elimination of flange, and reduced floor thickness of the HDD base.

REFERENCES:
patent: 4553183 (1985-11-01), Brown et al.
patent: 6351344 (2002-02-01), Krum et al.
patent: 6522498 (2003-02-01), Lim et al.
patent: 6570727 (2003-05-01), Tamura et al.
patent: 6594099 (2003-07-01), Serizawa

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