Bulk erase tool for erasing perpendicularly recorded media
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorTaeyong Yoon
Life of this patent
Estimating the term…
Abstract
A bulk erase tool for erasing perpendicularly recorded media is provided. The bulk erase tool includes a first polarity erase magnet and a second polarity erase magnet offset from the first polarity erase magnet. In so doing, the offset between the first polarity erase magnet and the second polarity erase magnet produces a non-parallel non-vertical applied field utilized for erasing perpendicularly recorded media.
Claims18
A bulk erase tool for erasing perpendicularly recorded media on a hard disk drive comprising:
- a first polarity erase magnet;
- a second polarity erase magnet offset from said first polarity erase magnet, wherein said offset between said first polarity erase magnet and said second polarity erase magnet produces a non-parallel non-vertical applied field utilized for erasing perpendicularly recorded media on said hard disk drive without demagnetizing a motor magnet of said hard disk drive;
- and
- a flux guiding mechanism for redirecting said non-parallel non-vertical applied field, said flux guide mechanism comprising:
- a magnetic material formed in an approximate shape of an “L” for redirecting said flux to provide a location of protection for a motor magnet of a hard disk drive, when said hard disk drive is inserted into said applied field of said bulk erase tool.
A bulk erase tool for erasing perpendicularly recorded media on a disk of a hard disk drive comprising:
- a first polarity erase magnet;
- a second polarity erase magnet offset from said first polarity erase magnet, wherein said offset between said first polarity erase magnet and said second polarity erase magnet produces a non-parallel non-vertical applied field utilized for erasing perpendicularly recorded media;
- and
- a flux guiding mechanism for redirecting said non-parallel non-vertical applied field to provide a location of protection for a motor magnet of said hard disk drive, when said hard disk drive is inserted into said applied field of said bulk erase tool said flux guide mechanism comprising:
- a magnetic material formed in an approximate shape of an “L” for redirecting said flux to provide a location of protection for a motor magnet of a hard disk drive, when said hard disk drive is inserted into said applied field of said bulk erase tool.
A bulk erase tool for erasing perpendicularly recorded media on a disk of a hard disk drive comprising:
- a first polarity erase magnet;
- a second polarity erase magnet offset from said first polarity erase magnet, wherein said offset between said first polarity erase magnet and said second polarity erase magnet produces a non-parallel non-vertical applied field utilized for erasing perpendicularly recorded media;
- and
- a magnetic material formed in an approximate shape of an “L” for redirecting said non-parallel non-vertical applied field to provide a location of protection for a motor magnet of said hard disk drive, when said hard disk drive is inserted into said applied field of said bulk erase tool.
Dependencies are inferred from the claim text.