Magnetic storage device with dual stage humidity control
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United States of America Patent
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Dec 3, 2013
Grant Date -
May 9, 2013
app pub date -
Nov 8, 2011
filing date -
Nov 8, 2011
priority date (Note) -
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Abstract
Approaches for desiccant device having a dual stage humidity control for use within sensitive electronic equipment. Electronic equipment, such as a hard-disk drive (HDD), may comprise a desiccant device that comprises a first absorbing portion that comprises a first desiccant material and a second absorbing portion that comprises a second desiccant material. The first absorbing portion possesses a relatively rapid permeation rate for water vapor, while the second absorbing portion possesses a relatively low permeation rate for water vapor. The first desiccant material may have a relatively high rate of water vapor absorption, while the second desiccant material may have a relatively low rate of water vapor absorption. In this way, embodiments allow for the sensitive equipment to be dried out rapidly in manufacturing and yet have a slow reversible water absorption rate during operation.
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