According to one embodiment, a magnetic recording/reproducing apparatus includes irreversible adsorbing materials in a sealed housing for the magnetic recording/reproducing apparatus.

A filter assembly is disclosed that has a body defining a cavity and having a first side edge surface, a second side edge surface, a top edge surface, and a bottom edge surface forming a perimeter surface around the cavity. A porous flow face extends across the cavity and is coupled to the perimeter surface. The porous flow face arcs between the first side edge surface and the second side edge surface. An adsorbent is disposed in the cavity.

The present disclosure includes embodiments of an electronic device having a housing that defines an interior gas space, and desiccant disposed therein. The desiccant includes one or more zeolite compositions to manage the relative humidity of the interior gas space.

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region are bonded in a rim region. A plurality of adsorbent beads are disposed between the first sheet of filter media and the second layer of filter media, and a substantial portion of the plurality of adsorbent beads are unbonded. Other embodiments are also described.

A disk drive includes a housing, a disk recording medium disposed in the housing, and a plurality of filters disposed along a flow channel formed in the housing and overlapped with each other. Each of the filters including an outer member formed of an electrostatic woven fabric and electrostatic non-woven fibers contained in an enclosed space formed by the outer member.

According to one embodiment, a humidity control filter used in a magnetic recording/reproducing apparatus includes a housing that houses a magnetic recording medium and disposed inside the housing and close to a vent connecting the inside of the housing and outside air. The humidity control filter including a water-repellency coating having ventilation, a first adsorption layer of a porous solid having characteristics of type III isotherm according to IUPAC classification, and a second adsorption layer of a porous solid having characteristics represented by type I adsorption isotherm according to the IUPAC classification, which are provided in order from the vent.

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region are bonded in a rim region. A plurality of adsorbent beads are disposed between the first sheet of filter media and the second sheet of filter media, and a substantial portion of the plurality of adsorbent beads are unbonded. Other embodiments are also described.

A filter assembly has a housing. The housing has an inner body and an outer body surrounding at least a portion of the inner body. The inner body has a base extending in a lateral direction and a first sidewall extending axially outward from the base. The inner body defines a cavity. The first sidewall defines a perimetric surface around the cavity. A first filter media extends across the perimetric surface and across the cavity. An adsorbent is disposed in the cavity. The outer body has a second sidewall laterally outward from and surrounding the first sidewall. The second sidewall spans at least 50% of the axial length of the first sidewall. The outer body has a first axial end and a second axial end and a retainer portion extending laterally inward from the first axial end. The retainer portion is positioned axially outward from the first filter media.

According to one embodiment, a humidity control filter used in a magnetic recording/reproducing apparatus includes a housing that houses a magnetic recording medium and disposed inside the housing and close to a vent connecting the inside of the housing and outside air. The humidity control filter including a water-repellency coating having ventilation, a first adsorption layer of a porous solid having characteristics of type III isotherm according to IUPAC classification, and a second adsorption layer of a porous solid having characteristics represented by type I adsorption isotherm according to the IUPAC classification, which are provided in order from the vent.

Examples herein relate to faceplates with filters. In some examples, an apparatus can include a faceplate, where the faceplate includes a plurality of perforations through a thickness of the faceplate, a filter attached to the faceplate, and a magnet to generate a magnetic attraction force between the faceplate and the filter such that the filter is magnetically attached to the faceplate.