Patent ID: 8693135
Filing Date: 2014-04-08
Classification: G11B

Abstract:
1. A hard-disk drive, comprising: an enclosure; a magnetic-recording head; a magnetic-recording disk rotatably mounted on a spindle; and a desiccant device providing a source of a beneficial vapor within the enclosure, wherein the desiccant device comprises a desiccant that absorbs water vapor within the enclosure, and wherein the desiccant does not absorb the beneficial vapor within the enclosure, wherein the desiccant device comprises a substance that provides the source of the beneficial vapor, wherein the desiccant is not the substance that provides the source of the beneficial vapor, and wherein the desiccant comprises a plurality of micropores within a size range selected so as to allow the absorption of water but exclude the absorption of the beneficial vapor, wherein the desiccant and the substance that provides the source of the beneficial vapor are intermingled within the interior of the desiccant device.