Magnetic recording process
AssigneeMaxtor Corporation
InventorsMourad Benakli, Adam Torabi
Life of this patent
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Abstract
A magnetic recording process includes applying an initial magnetic field to magnetize a magnetic recording medium and positioning a ferromagnetic mask over the magnetic recording medium. The ferromagnetic mask has a tooth which shields a portion of the magnetic recording medium in order to maintain the initial magnetic field in the portion. The process also includes applying a biasing magnetic field to the magnetic recording medium and applying a recording magnetic field to the magnetic recording medium while applying the biasing magnetic field. The biasing magnetic field is substantially perpendicular to the initial magnetic field and the recording magnetic field is substantially opposite in polarity to the initial magnetic field.
Claims35
A method for use in recording information on a medium, comprising:
- applying an initial magnetic field to the medium;
- applying a biasing magnetic field to the medium, the biasing magnetic field being substantially perpendicular to the initial magnetic field;
- and
- applying a recording magnetic field to the medium while the biasing magnetic field is being applied, the recording magnetic field being substantially opposite in polarity to the initial magnetic field.
A magnetic recording process comprising:
- applying an initial magnetic field to magnetize a magnetic recording medium;
- positioning a ferromagnetic mask over the magnetic recording medium, the ferromagnetic mask having a tooth which shields a portion of the magnetic recording medium in order to maintain the initial magnetic field in the portion;
- applying a biasing magnetic field to the magnetic recording medium, the biasing magnetic field being substantially perpendicular to the initial magnetic field;
- and
- applying a recording magnetic field to the magnetic recording medium while applying the biasing magnetic field, the recording magnetic field being substantially opposite in polarity to the initial magnetic field.
A disk drive comprising:
- a disk having a plurality of concentric tracks which store data;
- and
- a print head which transfers data to and from the concentric tracks of the disk;
- wherein the disk includes servo information that is applied to the disk by:
- applying an initial magnetic field to the disk;
- applying a biasing magnetic field to the disk, the biasing magnetic field being substantially perpendicular to the initial magnetic field;
- applying a recording magnetic field to the disk while the biasing magnetic field is being applied, the recording magnetic field being substantially opposite in polarity to the initial magnetic field.
Dependencies are inferred from the claim text.