Self-writing of servo patterns based on printed reference pattern in rotating disk drive
AssigneeMaxtor Corporation
InventorsBill Baker, Steven Lambert, Jong Lin, Michael Anthony Moser, Shu-Yu Sun
Life of this patent
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Abstract
A coarse magnetic template pattern is transferred to a data storage surface of a disk by magnetic printing techniques. As printed, the template pattern essentially provides clocking and may provide radial position information. The disk is then assembled into a completed and enclosed disk drive. The template pattern is then used by the disk drive to self-write highly resolved product embedded servo patterns onto storage surfaces of each data disk including the surface having the printed template pattern.
Claims20
A method for self-servowriting a disk drive comprising the steps of:
- transferring a magnetic pattern by magnetic printing onto at least one storage surface of a disk, wherein a resulting printed magnetic pattern includes servo information and wherein the printed magnetic pattern has a resolution lower than a disk drive servo pattern specification based on head gaps of data transducers included in the disk drive,
- assembling the disk drive including installing the disk into the disk drive and enclosing the disk and the data transducers within a housing sealed against particulate contamination from an external ambient environment,
- reading the printed magnetic pattern in order to aid precise positioning of the data transducers relative to storage locations defined by disk storage surfaces,
- self-writing disk drive servo patterns onto the storage surfaces at the concentric track locations with the data transducers in accordance with the disk drive servo pattern specification after the disk and data transducers have been enclosed within the housing.
A method for self-servowriting a disk drive with the aid of a template pattern transferred by magnetic printing onto a storage surface of a first disk, wherein the printed magnetic template pattern includes clock and disk radial position information and wherein template pattern features have a resolution lower than a disk drive servo pattern features specification based on head gap widths of disk drive data transducers to be included in the disk drive, comprising the steps of
- assembling the disk drive including installing the first disk and the disk drive data transducers into a housing of the disk drive and enclosing the housing to prevent entry of external particulate contaminants, and following the assembly step:
- reading the printed magnetic template pattern with a disk drive data transducer in order to precisely locate and maintain the data transducer at concentric data track storage locations of a disk storage surface, and
- self-writing disk drive servo patterns onto the storage surfaces of the first disk at the concentric track locations with the disk drive data transducers in accordance with the disk drive servo pattern specification.
Dependencies are inferred from the claim text.