A head driving device includes a head supporting portion supporting a head member, a first beam, a second beam, a first piezoelectric unit including a pair of piezoelectric elements, and a second piezoelectric unit including a pair of piezoelectric elements. When voltage is applied to the piezoelectric elements of the first piezoelectric unit, the piezoelectric elements deform, and a distal end of the first beam moves. The piezoelectric elements of the second piezoelectric unit also deform by application of voltage, and moves a distal end of the second beam in a same direction as the distal end of the first beam.

A flexure of a disk drive suspension includes a metal base, and a wiring portion provided along the metal base. The wiring portion includes a base insulating layer, a conductor layer overlapping with the base insulating layer, and a cover insulating layer overlapping with the conductor layer, and the metal base includes a pair of first portions having side surfaces opposed to each other. At least one of the base insulating layer and the cover insulating layer is in contact with the side surfaces between the pair of first portions, and the conductor layer does not overlap with the metal base in a direction of stacking the wiring portion

A hard disk drive includes a base and a cover coupled together to create an enclosure and an actuator assembly positioned in the enclosure. The actuator assembly includes a body and arms extending from the body, and the arms comprise a reinforced aluminum alloy. Magnetic recording disks are respectively positioned between pairs of the arms.

According to one embodiment, a head suspension assembly includes a base plate including a first main surface, a second main surface opposing the first main surface, a distal end portion and a recess formed in the distal end portion on a side of the first main surface, a load beam including a proximal end portion disposed in the recess and fixed to a bottom surface of the recess and extending from the base plate, a wiring member disposed on the first main surface of the base plate and the load beam and a magnetic head supported by the load beam via the wiring member.

A trace gimbal is described herein. In some embodiments, the trace gimbal includes outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal. The front outrigger includes a distal front outrigger and a proximal front outrigger, and the rear outrigger includes a distal rear outrigger and a proximal rear outrigger. The trace gimbal further includes a middle strut extending in a width direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger, and an inner strut connecting the middle strut to a slider tongue. The inner strut includes a slot, and the inner strut and the middle strut adjoin the outer gimbal struts to the slider tongue.

A head stack assembly (HSA) includes: a preamp having first contacts disposed on a first side and second contacts disposed on a second side which is opposite to the first side; a main actuator circuit disposed proximate the first side of the preamp and having Contacts configured to be electrically connected to the first contacts of the preamp; and a flexure/suspension circuit disposed proximate the second side of the preamp and having flexure/suspension circuit contacts configured to be directly electrically connected to the second contacts of the preamp.

According to an embodiment, a disk drive suspension includes a load beam, a flexure including a tongue on which a slider is mounted and an outrigger connected to the tongue, and overlapping the load beam, and a damper material attached to the load beam and the outrigger. Further, the damper material has a single-layer structure of a viscoelastic material.

A suspension includes a load beam, a flexure and a dimple portion. The flexure includes a tongue. The dimple portion swingably supports the tongue at least over a first position and a second position. In the tongue, first pillow portions supporting a slider and an adhesive portion fixing the slider are provided. In the load beam, a second pillow portion protruding towards the slider is provided. The second pillow portion is in contact with the slider when the tongue is located at the first position, and separates from the slider when the tongue has moved to the second position.

A method for producing a wired circuit board includes the steps of preparing a metal supporting layer; forming an insulating layer on the metal supporting layer; roughening the surface of the insulating layer; forming a conductive pattern on the insulating layer; and inspecting the presence or absence of a defect of the conductive pattern by using an inspection device provided with a light emitting portion emitting incident light that enters the insulating layer and the conductive pattern and a light receiving portion receiving reflected light that is reflected from the incident light. The incident light has a wavelength in the range of 435 to 500 nm and includes inclined light that inclines so as to form an angle of more than 0° to not more than 30° with respect to the optical axis thereof.

A suspension baseplate is stamped at its distal end to which the load beam is mounted. The stamping operation smoothes out roughness in the edge of the baseplate and lowers its height slightly so that, along the line on the baseplate which last contacts the load beam as the load beam is leaving the baseplate, that line on the baseplate is smooth and free of burrs and similar defects. By eliminating burrs on the surface to which the load beam is mounted, variations in the pitch and twist of the load beam are reduced.