Abstract: A flexible flat cable and a manufacturing method thereof are provided. The flexible flat cable includes a plurality of ground parts comprising a conductive material disposed at intervals, a plurality of signal transmission parts comprising a conductive material disposed between the plurality of ground parts, an outer skin covering the signal transmission parts and the ground parts, and a conductive adhesive layer disposed between the ground parts and the signal transmission parts and the outer skin part, the signal transmission part comprising an insulating member and a strip line disposed within the insulating member and the ground part comprising a ground member having the same cross section as the strip line and a conductive adhesive block coupled to the ground member with the conductive adhesive layer.

Abstract: A device for detecting a connector mounting failure includes a detection unit and a connection member that interconnects the detection unit and a connector device. The connection member includes a connection connector inserted into and seated in the connector device, and a connection line unit that interconnects the connection connector and the detection unit. The connection line unit also delivers a detection value of the connection connector to the detection unit.

Abstract: A flexible flat cable and a manufacturing method thereof are provided. The flexible flat cable includes a plurality of ground parts comprising a conductive material disposed at intervals, a plurality of signal transmission parts comprising a conductive material disposed between the plurality of ground parts, an outer skin covering the signal transmission parts and the ground parts, and a conductive adhesive layer disposed between the ground parts and the signal transmission parts and the outer skin part, the signal transmission part comprising an insulating member and a strip line disposed within the insulating member and the ground part comprising a ground member having the same cross section as the strip line and a conductive adhesive block coupled to the ground member with the conductive adhesive layer.

Abstract: A device for detecting a connector mounting failure includes a detection unit and a connection member that interconnects the detection unit and a connector device. The connection member includes a connection connector inserted into and seated in the connector device, and a connection line unit that interconnects the connection connector and the detection unit. The connection line unit also delivers a detection value of the connection connector to the detection unit.

Abstract: A servo track writer and a chuck thereof which are capable of maintaining a central axis of a disk hub to be aligned with a rotating axis of a spindle motor adapted to rotate the disk hub, thereby preventing disks mounted on the disk hub from fluctuating. The servo track writer includes a disk hub, on which a plurality of disks are mounted, a magnetic head assembly to write servo information on the disks mounted on the disk hub, a spindle motor to rotate the disk hub, and a chuck to firmly hold the disk hub. The chuck firmly holds the disk hub at a plurality of points to prevent the central axis of the disk hub from being inclined from the rotating axis of the spindle motor.

Abstract: A disc centering device includes a base plate, a chuck which is installed on the base plate, a hub unit which is detachably engaged to the chuck and receives discs and spacers to be stacked, disc pushers which are slidably provided outside the hub unit and include corresponding pressure members which center the discs by pushing circumferences of the discs, a driving unit which slides the disc pushers, and biasing units which are slidably provided outside the hub unit and push circumferences of the spacers. Accordingly, by performing a spacer biasing along with a disc centering, the accuracy of a centering is increased, thereby providing the discs having data recorded thereon with a uniform quality. Additionally, vibration of a rotation body can be minimized due to the simple configuration of the disc centering device. Furthermore, the productivity and manufacturability of HDDs are improved in view of the simplified maintenance and repair of the same.

Abstract: A servo track writer and a chuck thereof which are capable of maintaining a central axis of a disk hub to be aligned with a rotating axis of a spindle motor adapted to rotate the disk hub, thereby preventing disks mounted on the disk hub from fluctuating. The servo track writer includes a disk hub, on which a plurality of disks are mounted, a magnetic head assembly to write servo information on the disks mounted on the disk hub, a spindle motor to rotate the disk hub, and a chuck to firmly hold the disk hub. The chuck firmly holds the disk hub at a plurality of points to prevent the central axis of the disk hub from being inclined from the rotating axis of the spindle motor.

Abstract: A disc centering device includes a base plate, a chuck which is installed on the base plate, a hub unit which is detachably engaged to the chuck and receives discs and spacers to be stacked, disc pushers which are slidably provided outside the hub unit and include corresponding pressure members which center the discs by pushing circumferences of the discs, a driving unit which slides the disc pushers, and biasing units which are slidably provided outside the hub unit and push circumferences of the spacers. Accordingly, by performing a spacer biasing along with a disc centering, the accuracy of a centering is increased, thereby providing the discs having data recorded thereon with a uniform quality. Additionally, vibration of a rotation body can be minimized due to the simple configuration of the disc centering device. Furthermore, the productivity and manufacturability of HDDs are improved in view of the simplified maintenance and repair of the same.