Abstract: The disclosure provides an optical disc driver for loading or loading/writing an optical disc and accessing at least one memory card. The optical disc driver includes a housing and a rectangular body. The rectangular body formed mainly for loading an optical disk includes a front panel disposed at a front side of the rectangular body; a main space for loading or loading/writing the optical disk, and an optical loading device is disposed in the main space; and a spare space for accessing the at least one memory card, and a plurality of electrical pins disposed in the spare space. The rectangular body moves in relative to the housing along a left-right direction of the front panel, the main space and the spare space are formed downward from a same plane, and the spare space is a small section extending from one of two sides of the front panel.

Abstract: According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a return pole opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between respective facing surfaces of the main pole and the return pole and configured to produce a high-frequency magnetic field. At least one of the main and return poles faces the high-frequency oscillator and includes a laminated structure portion includes a magnetic layer and a nonmagnetic layer laminated to one another.

Abstract: The invention provides an emergency ejection device for a slot-in disk drive, which rotates a worm gear by a motor. A central hole of a rotating component is fixed on a housing. A sliding slot is formed on an end of the rotating component, and a buckling slot is formed on an end of the sliding slot. A first gear of a gear set fixed on the central hole of the rotating component is engaged with the worm gear. A clutching gear fixed on the other end of the rotating component is engaged with the first gear. An end of a locking component inserts inside the sliding slot, and an inclined surface protrudes from the other end of the locking component. A spring provides an elastic force for holding the sliding column inside the buckling slot so as to keep engagement of the clutching gear with a second gear.