Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Reexamination Certificate
2005-04-12
2005-04-12
Padgett, Marianne (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
C427S491000, C427S490000, C427S525000, C427S526000, C427S533000, C427S536000, C427S535000, C427S577000, C427S248100, C427S430100
Reexamination Certificate
active
06878418
ABSTRACT:
A system and method for improving the durability and reliability of recording media used in hard drives is disclosed. A protective overcoat made by depositing a diamond like carbon (DLC) layer over a magnetic layer and then depleting a portion of the DLC protective layer of hydrogen before it is coated with a Perfluoropolyethers (PFPE) using an in-situ vapor lubrication technique. The portion of the DLC layer which is depleted can be data zone of the media so that the lubricant-bonding ratio is higher for the landing zone than it is for the data zone.
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Gui Jing
Ma Xiaoding
Stirniman Michael Joseph
Castillo Jesus Del
Minisandram Raghunath S.
Padgett Marianne
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