SPINDLE MOTOR AND HARD DISK DRIVE
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Jul 9, 2014
filing date -
Jul 12, 2013
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Abstract
A spindle motor is provided in which the scattering of contaminating particles are prevented in a stainless steel part used therein. so that a hard disk drive can be prevented from being damaged due to collision between the particles adhered on a magnetic disk surface and a magnetic head. The spindle motor has a fixed portion and a rotating portion in which at least a part of one of the fixed portion and the rotating portion is made of stainless steel, and a metallic film is directly formed on the surface of the stainless steel by electroless nickel plating.
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