Abstract: The present invention relates to a system for recording a datum onto a pixel on a light-sensitive sheet. The main component of the system is a recording unit, which further includes a light-emitting device and at least one light-guiding device. Once the light-emitting device emits a light, the light enters the light-guiding device from an entrance and is transmitted out from an exit. Before the datum is recorded, the recording unit is moved so as to align the exit of the light-guiding device with the pixel. Thereby, the light transmitted out from the exit of the light-guiding device is further projected onto the pixel to record the datum on the pixel.

Abstract: An electric device includes a housing having an opening, a printed circuit board installed in the housing, a switch formed on the printed circuit board for enabling functions of the electric device, a faceplate for coving the opening of the housing, a keypad formed on a position of the faceplate corresponding to the switch for triggering the switch, and a fixing mechanism comprising a first fixing element extending from a side of the faceplate facing the printed circuit board, and a second fixing element extending from the printed circuit board for being combined with the first fixing element.

Abstract: An electronic device includes a substrate, a processor, and a cooling mechanism. The processor is disposed on the substrate. The cooling mechanism includes a conductive medium, a cooling plate and a protrusion. The conductive medium contacts the processor. The cooling plate contacts the conduction medium. The protrusion protruding from the cooling plate connects the substrate to define and maintain a distance between the substrate and the cooling plate. Thus, the contact between the processor, the conductive medium, and the cooling plate are tightly maintained.

Abstract: An optical disk device. The optical disk device comprises a housing, a tray, and a cover. The housing comprises an opening and a first side. The tray is movably disposed in the housing, parallel to the first side and ejectable from the opening. The cover comprises an upper surface. When the tray is closed, the cover blocks the opening and the upper surface of the cover is substantially as high as the first side of the housing.

Abstract: An optical disc drive including a triggering switch and a control unit is disclosed. The triggering unit outputs a triggering signal while it is forced. The control unit, which is electrically coupled with a disc-ejection motor and the triggering switch, receives the triggering signal, and outputs a disc-ejection motor control signal when an optical disc rotates in the optical disc drive. The disc-ejection motor outputs a force opposite to the applied force while receiving the disc-ejection motor control signal so that the tray is restrained in the optical disc drive.