Samsung Electronics Co., Ltd.

Kwang-Kyu Kim

In-Su Kim

Byoung-gyou Choi

Woo-sung Kim

Yong-han Song

A hard disk drive includes a disk pack having at least one disk for recording and/or storing data and a spindle motor that support and rotates the disk, a base to which the disk pack is mounted, a cover that covers an upper surface of the base, and a respective filter disposed close to each of at least one of the major surfaces of the disk and extending in the radial direction of the disk including over at least an inner peripheral region of the disk. The filter has an absorbent layer capable of absorbing particles that come in contact with it. Particles on the surface of the disk, from the inner to the outer peripheral regions of the disk, are removed by the filter when the disk is rotated and the particles are flung off of the disk. Thus, particles will not damage the magnetic head(s) of the hard disk drive nor will the particles cause errors to occur in the recording and/or reproducing of data.

Hard disk drive

An actuator assembly usable un a hard disk drive includes an actuator arm having an arm hole to improve dynamic characteristics. The actuator arm of the actuator assembly has an arm hole having first, second, and third extended portions, and two members positioned at both sides of the arm hole. The first extended portion is formed at an edge positioned at a leading end of the arm hole so that each of leading ends of the two members has a first reduced width, the second extended portions are formed at edges positioned at a rear end of the arm hole so that each of rear ends of the two members has a second reduced width, and the third extended portions are formed at both sides of a middle portion of the arm hole so that each of middle portions of the two members has a third reduced width. The third width is smaller than the second width and larger than the first width, so that a displacement of a read/write head in a major resonance mode is minimized, a bandwidth for position control of the read/write head is widened, and a position error signal is decreased when the hard disk drive operates.

Actuator arm with arm hole to improve dynamic characteristics and actuator assembly having the same

A disk drive recording device comprises at least two platters for storing magnetic recording data and a spindle motor rotating at high speed for mounting the platters. The disk drive is assembled by using pushing devices to push the platters toward the center of the spindle motor in respective directions to bring a portion of an inside circumference of a concentric center hole of each of the platters in contact with an outer circumference of the spindle motor so that the center of gravity of each platter coincides with a center axis of the spindle motor.

Disk assembly method for adjusting the disk balance of the hard disk drive

Disk assembly device for adjusting the disk balance of the hard disk

The present invention relates to a supporting device for minimizing physical shocks, vibrations and noise of a hard disk drive and more particularly to a hard disk drive in which a supporting device having a damper is installed to protect data recorded on a disk from being lost and to protect the disk or the head from being damaged due to the physical shocks, vibrations and noise. A supporting device for minimizing the physical shocks, vibrations and noise in a hard disk drive having a disk rotating at high speed by the driving of a spindle motor, and a head assembly including an actuator and a magnetic head for writing and reading data recorded in the individual tracks of the disk, and a plate having a substantially same thermal expansion coefficient as that of a base body fixed to the shaft of the spindle motor, a pivot supporting the head assembly, and a damper attached to an upper portion of the plate, for damping the physical shocks, vibrations and noise.

Growing community of inventors

Suwon-si, South Korea

Kwang-Kyu Kim