Abstract: Provided is a method of duplicating a nano-pattern texture of the surface of an object through electroforming using an imprint mold, including selecting the object having the surface texture to be duplicated; disposing the selected object and pre-treating the surface thereof; nano-imprinting the surface of the pretreated object, thus duplicating it on a plastic mold; metalizing the surface of the plastic mold through vapor deposition, and performing electroforming, thus manufacturing metal module master molds; trimming the edges of the metal module master molds, performing micro-processing, connecting the metal module master molds, and then performing electroforming, thus manufacturing a large-area metal unit master mold; and electroforming the metal unit master mold, thus producing a duplicate having the surface texture, thus exhibiting an effect in which the skin of a selected natural object can be duplicated on metal having a uniform thickness.

Abstract: Provided are a structure colour of photonic crystals in which a new structure of a structure colour of photonic crystals is provided so that a nanoimprint process can be performed and mass productivity is improved, a method of manufacturing thereof, and a manufacturing apparatus thereof. The method of manufacturing a structure colour of photonic crystals includes: forming a plurality of basic element layers by using nanoimprinting, the plurality of basic element layers comprising a plurality of basic unit bodies each having a symmetrical cross-section and thin film connecting portions connecting the basic unit bodies! sequentially stacking the basic element layers! removing the thin film connecting portions by using etching; and determining whether the structure colour of photonic crystals is completed, wherein, when it is determined that the structure colour of photonic crystals is not completed, the forming, the stacking, and the removing are repeatedly performed.

Abstract: A cover assembly of a hard disk drive is provided. The cover assembly includes a cover member with an edge portion protruding a predetermined height from an upper surface thereof, a damping plate disposed on the upper surface of the cover member, and a damper to absorb shocks applied to the edge portion of the cover member, the damper having a support portion disposed between a bottom surface of a border portion of the damping plate and the upper surface of the cover member to support the damping plate, and a protrusion extending upward from the support portion through a gap between the edge portion of the cover member and the damping plate. The protrusion of the damper may have a height that is higher than the edge portion of the cover member, whereby external shocks applied to the cover member are absorbed more efficiently by the protrusion of the damper so that a shock energy transferred to the hard disk drive is minimized.

Abstract: Disclosed is a method of duplicating a nano-pattern texture of the surface of an object through electroforming using an imprint mold, including selecting the object having the surface texture to be duplicated; disposing the selected object and pre-treating the surface thereof; nano-imprinting the surface of the pretreated object, thus duplicating it on a plastic mold; metallizing the surface of the plastic mold through vapor deposition, and performing electroforming, thus manufacturing metal module master molds; trimming the edges of the metal module master molds, performing micro-processing, connecting the metal module master molds, and then performing electroforming, thus manufacturing a large-area metal unit master mold; and electroforming the metal unit master mold, thus producing a duplicate having the surface texture, thus exhibiting an effect in which the skin of a selected natural object can be duplicated on metal having a uniform thickness.

Abstract: A hard disk drive comprising balance weight integrally coupled to a clamp is provided. The hard disk drive comprises a disk stack assembly comprising a disk, a spindle motor comprising a rotational shaft and a spindle motor hub adapted to support the disk, and a clamp comprising a plurality of installation holes. The hard disk drive further comprises at least one clamp screw and a balance weight integrally coupled to the clamp and adapted to compensate for an imbalance in the disk stack assembly.

Abstract: A hard disk drive comprising balance weight integrally coupled to a clamp is provided. The hard disk drive comprises a disk stack assembly comprising a disk, a spindle motor comprising a rotational shaft and a spindle motor hub adapted to support the disk, and a clamp comprising a plurality of installation holes. The hard disk drive further comprises at least one clamp screw and a balance weight integrally coupled to the clamp and adapted to compensate for an imbalance in the disk stack assembly.

Abstract: A cover assembly of a hard disk drive is provided. The cover assembly includes a cover member with an edge portion protruding a predetermined height from an upper surface thereof, a damping plate disposed on the upper surface of the cover member, and a damper to absorb shocks applied to the edge portion of the cover member, the damper having a support portion disposed between a bottom surface of a border portion of the damping plate and the upper surface of the cover member to support the damping plate, and a protrusion extending upward from the support portion through a gap between the edge portion of the cover member and the damping plate. The protrusion of the damper may have a height that is higher than the edge portion of the cover member, whereby external shocks applied to the cover member are absorbed more efficiently by the protrusion of the damper so that a shock energy transferred to the hard disk drive is minimized.

Abstract: The present invention is to an identification system and method that is accomplished comparison and determination of biometric information stored in storage medium and detected from person on site in the identification system such that the present invention enable to reduce time and cost that it takes to communicate biometric information in communication network. Furthermore, after comparing and determining the biometric information, the present invention completely deletes the register data and the biometric information data of the person remained in the temporary memory means such that the present invention is to an identification system and method enabling to prevent the information from leakage and hacking.