Importance

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Abstract

A family of hard disk drive digital storage systems of different height using common components is provided herein. The family of drives uses similar parts in order to provide economies of scale and overlap of tooling necessary to manufacture the disk drives. The family of drives includes a full height -drive having multiple rotatable disks and a head positioner arrangement for moving data heads relative to the disks. The head positioner arrangement includes an integrally formed head positioner having two coils and a permanent magnet structure having two pairs of fixed substantially flat spaced permanent magnets, and each coil extends through one pair of magnets. This design significantly improves the electrical time constant over previous positioner motor designs. The full-height drive also includes several flux plates and support elements, several of which are manufactured to the same dimensions. The half-height drive includes fewer rotatable disks than the full-height drive, and also includes a head positioner arrangement for mounting the heads relative to the disks. The head positioner arrangement includes a pair of fixed substantially flat spaced permanent magnets manufactured to the dimensions of the magnets used in the full-height drive. The half-height head positioner arrangement has a coil extending between the magnets for controlling head movement.

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First Claim