Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1999-06-28
2000-08-29
Diamond, Alan
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
2041921, 20419212, 20419215, 20429807, 20429802, 428 654, 428 655, 428694TP, 428694TC, 428694SG, 428695, 360135, 427569, 427577, 427580, 427906, C23C 1434, G11B 5725
Patent
active
061103306
ABSTRACT:
This invention relates to a process for forming a lubricant layer of differing thickness on distinct zones of a maonetic disk of a hard disk drive without heating, inert gas plasma and UV-radiation or E-beam exposition. According to the present invention. an overcoat layer with distinct zones of differing thickness is first sputtered on the disk surface by using distinct masks under different sputtering conditions. A lubricant layer is then uniformly coated on the overcoat layer. Since a part of lubricant is bonded to the overcoat to form a bonded lubricant layer and the thickness of the bonded lubricant layer relates to the overcoat layer's property, a free lubricant layer with zoned thickness is consequently formed, which the free lubricant layer consists of the leftover lubricant. The zoned lubricant layer of the invention hence decreases the flying stiction.
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Liang Hung-huei
Lin Che-Hsien
Lin Moon-Sun
Young Lem-San
Diamond Alan
Liauh W. Wayne
Trace Storage Technology Corp
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