Abstract: A base unit includes a support to support a motor, a bottom plate, and a wall. The bottom plate extends radially outward from the support. The wall extends upward from an outer periphery of the bottom plate, and includes a rectangular opening in planar view. Surfaces of the bottom plate and the wall include a cover surface covered with an electrodeposition coating film and an exposed surface in which a material of the base unit is exposed from the electrodeposition coating film. At least an upper end surface of the wall and a partial region of an inside wall surface of the wall continuous with the upper end surface are each the exposed surface.

Abstract: A magnetic recording disk drive head carrier or slider has a contact pad that protects the disk drive's write pole during touchdown of the slider with the disk. The contact pad is located in a window region of the slider's disk-facing surface that includes the write pole end. The contact pad includes a layer of silicon that surrounds the write pole end but does not cover it. The silicon does not cover the write pole end because it has diffused into the ferromagnetic material of the write pole end. This removes the silicon over the write pole end. The contact pad includes a protective overcoat on the silicon-containing write pole end and surrounding silicon layer. The protective overcoat thus has a recess over the write pole due to the absence of silicon, so that the protective overcoat surrounding the recess provides protection to the recessed write pole end during touchdown.

Abstract: According to one embodiment, a disk device includes a disk-shaped recording medium, a base accommodating the recording medium, the base including a bottom wall, a sidewall on a peripheral portion of the bottom wall, and a rib on a part of an upper surface of the sidewall, a first cover on a part of the upper surface of the sidewall, and a second cover on a first surface of the rib and above the first cover. The rib includes a first region with a first width, a second region with a second width less than the first width, and the first surface with a fixed width around an entire circumference of the rib. The first region and the second region are located corresponding to a side portion of the recording medium.

Abstract: An electronic device includes a housing having a first opening, an electric component in the housing, and a circuit board attached to the housing, having as outer surface, covering the first opening, and at least partially exposed to an outside of the housing. The circuit board includes first conductors exposed to the outside of the housing, and a second conductor that extends along the outer surface and is insulated from the plurality of first conductors. The electronic device further includes a connector mounted in the outer surface. The connector includes contactors electrically connected to the first conductors, and a support base having a second opening and supporting the contactors so as to be elastically deformable. The circuit board includes third conductors at positions overlapping the contactors. The third conductors are insulated from the first conductors and the second conductor, and provide gas sealing or electromagnetic shielding effects.

Abstract: A hermetically-sealed container for one or more data storage devices may include a first container part or base including a planar main portion, a plurality of sidewalls extending from the main portion, and a plurality of diffusion length extender flanges extending inward or outward from a corresponding sidewall. A pressure-sensitive adhesive tape, including a layer of adhesive and a layer of low-permeability material, is positioned at the interface or edge of each flange to hermetically seal the container, whereby the diffusion length corresponding to the leakage of gas from the hermetically-sealed container corresponds generally to the width of the flange(s). The hermetically-sealed container may then be filled with a lighter-than-air gas such as helium.

Abstract: A hard disk drive cover with a smooth bottom (inner) surface and a textured outer surface is provided for covering a hard disk drive base assembly. A method of manufacturing the hard disk includes providing a metal material. The metal material is worked into a metal strip having a textured surface and an opposing smooth surface. A hard disk drive cover is stamped from the worked metal strip with the smooth surface being the inner surface of the stamped cover. The smooth inner surface of the hard disk drive advantageously enhances cleanliness within the base assembly. The smooth surface finish on the inner surface also advantageously enhances shear strength of a bond between a gasket and the inner surface.

Abstract: A low permeability electrical feed-through involves a laminated structure having a conductor layer sandwiched between adjacent insulator layers, which are sandwiched between adjacent diffusion control layers, where the laminated structure provides a relatively narrow and long, high aspect ratio diffusion channel to inhibit the leakage of gas from within a sealed device to the external environment. The electrical feed-through may comprise lower and upper electrical connection pads that are positioned within different regions of the feed-through but still electrically connected by way of a first via positioned in a sealed region, the conductor layer, and a second via positioned in an external environment region.

Abstract: A pressure-sensitive adhesive sheet according to the present invention includes a base including a metal layer, a first plastic film layer A, and a second plastic film layer B and a pressure-sensitive adhesive layer on a surface of the second plastic film B. The metal layer is positioned between the first plastic film layer A and the second plastic film layer B. The metal layer has a thickness of 2 ?m to 15 ?m. A total of a thickness Ta of the first plastic film layer A and a thickness Tb of the second plastic film layer B is within a range of 25 ?m to 70 ?m.

Abstract: A novel hermetically sealed disk drive comprises a disk drive enclosure that includes a disk drive base with a bottom face, four side faces, and a top cover. The disk drive also comprises a peripheral foil seal overlapping each of the four side faces and having a first opening therethrough that overlies the upper surface of the top cover. The peripheral foil seal conforms to the disk drive enclosure and is adhered to the top face and to each of the four side faces by a first continuous adhesive layer. The hermetically sealed disk drive also includes a central metal cap completely covering the first opening and being adhered to the upper surface of the top cover through the first opening by a second continuous adhesive layer. The central metal cap is thicker than the continuous metal foil, and the disk drive enclosure is helium-filled.

Abstract: Improved hard disk drives of the invention comprise a composite housing, wherein the composite housing comprises a base and a cover, wherein at least a portion of the composite housing comprises a laminate of at least one rigid plastic layer and at least one metal coating. Methods for forming the same are also disclosed.

Abstract: Provided is a hard disk drive device that can be formed in a small size, which is capable of maintaining the humidity inside the device to the initial manufacture humidity for a long term and capable of adjusting the difference between the pressures of the inside and outside the device. The hard disk drive device includes: a casing formed by an upper housing and a lower housing; and a magnetic disk as well as a magnetic head housed inside the casing. An intake port for adjusting a difference between pressures of inside and outside the casing is provided to the upper housing or the lower housing, and the intake port is sealed by a pressure-adjusting gel-type member from outer side. Further, the pressure-adjusting gel-type member is formed substantially in the same size as the aperture size of the intake port.

Abstract: A disk drive includes a disk drive housing having a hole therethrough. A disk is enclosed within the disk drive housing, and is rotatably attached to the disk drive housing. A seal covers the hole through the disk drive housing. The seal includes a conductive layer, a primary dielectric layer, and a gasket layer. The conductive layer has a covered surface region and an exposed planar surface region. The exposed planar surface region is lacking a dielectric coating disposed thereon. The primary dielectric layer includes an adhesive coating disposed between the primary dielectric layer and the covered surface region. The gasket layer includes first and second adhesive gasket layer sides and a gasket opening disposed through the gasket layer. The gasket opening is disposed about the hole in the disk drive housing, with the first adhesive gasket layer attached to the disk drive housing.

Abstract: A novel information storage device is disclosed and claimed. The information storage device includes a device housing with a generally rectangular bay to accommodate a disk drive. The generally rectangular bay includes a base portion and a plurality of side portions. The information storage device further includes a damping insert sheet disposed between the disk drive and the base portion. The damping insert sheet has a plurality of elastomeric cushions, for example with a cushion thickness in the range 0.5 mm to 10 mm, and a spanning sheet, for example having a sheet thickness in the range 0.02 mm to 0.35 mm. Each of the plurality of elastomeric cushions is attached to the spanning sheet. Each of the plurality of elastomeric cushions contacts and is compressed between the generally rectangular bay and the disk drive.

Abstract: There is provided a seal for covering a hole in a disk drive housing. The seal includes a conductive layer, a primary dielectric layer, and a gasket layer. The conductive layer has a covered surface region and an exposed planar surface region. The exposed planar surface region is lacking a dielectric coating disposed thereon. The primary dielectric layer includes an adhesive coating disposed between the primary dielectric layer and the covered surface region. The gasket layer includes first and second adhesive gasket layer sides and a gasket opening disposed through the gasket layer.

Abstract: A novel disk drive enclosure includes a disk drive base having a bottom portion and four side walls that define a cavity therebetween. At least one disk is mounted in the cavity. The disk drive also includes a top seal that includes a peripheral portion that overlies each of the four side walls and a central portion that spans the cavity. A metal flange protrudes from all four side walls of the disk drive base, and is folded over the peripheral portion of the top seal along all four side walls. The top seal is continuously adhered to the metal flange along an entire length of all four side walls. The disk drive enclosure encloses helium gas.

Abstract: A method for forming a seal for hermetically sealing a hard disk drive assembly. The method includes forming a solder channel within a top cover of a disk drive enclosure and disposing a solder preform on a base of the disk drive enclosure such that the solder preform aligns with the solder channel when the top cover is positioned on the base.

Abstract: Embodiments of the present invention pertain to sealing an enclosure for a disk drive form factor. According to one embodiment, material is removed from a base casting for the disk drive form factor to enable insertion of a component. The removal of the material results in a portion of the base casting being thin enough to potentially cause an inadvertent hole in the base casting. A hole is purpose created in the base casting to avoid development of the inadvertent hole. A seal is used to cover the created hole in a manner that allows for insertion of the component.

Abstract: A method of manufacturing a disk drive device including: assembling a subassembly by fixing at least a bearing unit, a drive unit and a hub to a base member in a first clean room; cleaning the subassembly in a second clean room; and sealing the subassembly by a sealing member. The first clean room and the second clean room are communicated with each other by a communicating opening for transferring the subassembly, and an atmospheric pressure in the second clean room is equal to or higher than that in the first clean room.

Abstract: A novel disk drive includes a hermetically sealed helium-filled enclosure that has an opening extending through the disk drive base. A laminated electrical connector is disposed inside the enclosure, spans the opening, and is accessible from outside the disk drive base via the opening. The laminated electrical connector has an adhesive layer that is adhered to the disk drive base continuously around the opening, and that has a hole therethrough that is aligned with the opening. The laminated electrical connector includes electrically conductive traces that are electrically connected to the actuator flex cable, and a first insulative layer that is disposed on the trace layer. The laminated electrical connector has a metal foil sealing layer that continuously spans and completely covers the opening, and that has no holes therethrough that are aligned with the opening. The metal foil sealing layer overlaps the adhesive layer continuously around the opening.