摘要:
When a piezoelectric element is deformed in the direction of decreasing a flying height, a pressure at a trailing pad increases, and the flying height of a magnetic head is not efficiently decreased and may be increased conversely in some occasions.A position of contact between a suspension and a dimple is set toward a leading edge with respect to a piezoelectric element, and a pad for generating a positive pressure is disposed between the dimple and the piezoelectric element in addition to a trailing pad. Fluctuations of a positive pressure generated toward the leading edge with respect to the dimple are thus suppressed when the piezoelectric element is deformed.
摘要:
Provided is a magnetic head slider apparatus that can minimize a change in a roll angle caused by an impact force even with a submount mounted on a side surface thereof and achieve steady flying with the roll angle minimized. A dimple position and a pressure center position of a lifting force are moved in a slider width direction to thereby align a center of mass of a slider having a submount including a laser diode mounted on a side surface thereof, the dimple position, and the pressure center position of the lifting force with each other. This provides a magnetic head slider and a suspension thereof, and a magnetic disk drive apparatus offering higher recording density and higher reliability.
摘要:
Provided is a magnetic head slider apparatus that can minimize a change in a roll angle caused by an impact force even with a submount mounted on a side surface thereof and achieve steady flying with the roll angle minimized.A dimple position and a pressure center position of a lifting force are moved in a slider width direction to thereby align a center of mass of a slider having a submount including a laser diode mounted on a side surface thereof, the dimple position, and the pressure center position of the lifting force with each other. This provides a magnetic head slider and a suspension thereof, and a magnetic disk drive apparatus offering higher recording density and higher reliability.
摘要:
There is provided a thermally assisted magnetic recording device capable of preventing collision between a thermally assisted magnetic recording head and a disk due to thermal deformation of a near-field transducer. The thermally assisted magnetic recording device includes a temperature sensor for measuring the temperature in the vicinity of the near-field transducer, a table that stores the relationship between temperature and deformation in the vicinity of the near-field transducer, and a control unit. The control unit calculates the deformation in the vicinity of the near-field transducer, from the temperature measured by the temperature sensor and the relationship between temperature and deformation stored in the table. Then, the control unit drives the flying height control actuator according to the calculated deformation to control the distance between the thermally assisted magnetic recording and the disk in order to avoid contact between them.
摘要:
A thermally assisted magnetic recording head with highly efficient optical coupling, while guiding a laser beam from a semiconductor laser element, i.e., a light source, to a leading end thereof, eliminating an influence due to heat generated by the element, and having excellent floating characteristics. The thermally assisted magnetic recording head includes a substrate 2 having a first optical waveguide 1, a semiconductor laser element 100, and a slider 4 having a second optical waveguide 3 formed on an end surface. The semiconductor laser element 100 is fixed on the substrate 2 so that light emitted from the element 100 propagates through the first optical waveguide 1 and a slider 4 is fixed on the substrate 2 so that light emitted from the first optical waveguide 1 propagates through the second optical waveguide 3. High optical coupling efficiency is then achieved, while ensuring both heat-dissipating and floating characteristics.
摘要:
A head support mechanism includes a head to read/write information, and an actuator for moving the head. Flanges are provided on opposite sides of a load beam of the head support mechanism, and at least one recessed portion is provided on the load beam. A thickness of the load beam at the at least one recessed portion is smaller than a thickness at other portions of the load beam at least one of oscillation damping material and an IC circuit is arranged in the at least one recessed portion.
摘要:
In this light distribution control device in order to provide a vehicular lighting fixture for an Adaptive Frontlighting System (AFS) in which a lot of light distribution patterns can be set without making the entire lighting fixture larger, beams which link said movable substrates to said inner frames and beams which link said inner frames to said outer frame are mutually orthogonal, and a light distribution pattern is set by deforming under torsion the beams which link said movable substrates to said inner frames and the beams which link said inner frames to said outer frame, and swinging each of said movable substrates with respect to said outer frame in the biaxial directions independently.
摘要:
Provided is a structure of a heat assisted magnetic recording head gimbal assembly that allows common inexpensive TE-mode LDs to be utilized. The heat assisted magnetic recording head gimbal assembly comprises: a light source unit having a light emitting element mounted on a parabolic solid submount; a heat assisted magnetic recording head comprising a magnetic recording element, a read element, a near field transducer, and a waveguide for guiding light from the light emitting element into the near field transducer; a slider including the heat assisted magnetic recording head and which flies above a disk; and a suspension for supporting the slider. The light emitting element of the light source unit is an edge-emitting LD and the light source unit is arranged on the opposite side of an bearing surface of the slider such that the light emitting surface of the light emitting element faces the slider, apertures are created in the suspension, and the slider is connected to the suspension in a way that a part of the light source unit penetrates through the apertures of the suspension.
摘要:
A thermally assisted magnetic head-slider includes an air-bearing slider, a metal film, and a semiconductor laser unit. The metal film having an aperture in a part through which light from the semiconductor laser unit passes is disposed between a surface opposite to an air-bearing surface of the air-bearing slider and the semiconductor laser unit, and a material to adjust refractive index is provided in the aperture. A bottom surface of the metal film including the material to adjust refractive index is disposed to be in close contact with a surface opposite to the air-bearing surface side of the air-bearing slider, and the semiconductor laser unit is disposed to be in close contact with a top surface of the metal film including the material to adjust refractive index.
摘要:
A small-sized optical disc drive includes one voice coil motor magnet within which a tracking coil and two focusing coils are disposed such that the tracking coil straddles the two poles of permanent magnets that are adjacently disposed. The two focusing coils are disposed on either side of the tracking coil, with each of the two focusing coils being only disposed over one of the permanent magnets.