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US 6,602,570 B1Granted
Zone bonded lubrication for hard disk recording media
AssigneeSeagate Technology LLC
InventorsXiaoding Ma, Raj Thangaraj, Huan Tang, Michael J. Stirniman
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Abstract
A magnetic recording medium with low bonded lubricant at the landing zone, where the head takes off and lands, for better wear resistance, and with high bonded lubricant at the data zone to protect the data from corrosion, and a method of making the same are disclosed.
Claims10
A magnetic recording disk medium, comprising:
- a data zone,
- a landing zone,
- a first data zone lubrication layer comprising a first data zone lubricant on the data zone,
- a second data zone lubrication layer comprising a second data zone lubricant on the first data zone lubrication layer and
- a landing zone lubrication layer comprising a landing zone lubricant on the landing zone,
- wherein the first data zone lubricant and the landing zone lubricant have substantially the same composition and
- further wherein the first data zone lubricant has a higher bonded ratio than that of the landing zone lubricant.
4 more elements
A method of depositing lubrication layers on a magnetic recording disk medium comprising a data zone and a landing zone, the method comprising:
- depositing a first data zone lubricant on the data zone,
- depositing a second data zone lubrication layer comprising a second data zone lubricant on the first data zone lubricant layer and
- depositing a landing zone lubricant on the landing zone,
- wherein the first data zone lubricant and landing zone lubricant have substantially the same composition and
- further wherein the first data zone lubricant has a higher bonded ratio than that of the landing zone lubricant.
2 more elements
Dependencies are inferred from the claim text.