Rotating disk data storage apparatus capable of preventing head

Details Rotating disk data storage apparatus capable of preventing head Rotating disk data storage apparatus capable of preventing head

1994-01-10

1994-10-18

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 9701, 360105, G11B 2102

Patent

active

053573846

ABSTRACT:
A flexible magnetic disk drive is disclosed which has a data transducer mounted to a pivotal support beam for movement into and out of data transfer contact with the disk. When the transducer is retracted away from the disk, the support beam butts on the top plate of the disk drive casing for the reduction of the thickness of the disk drive, that is, its dimension in a direction perpendicular to the plane of the disk. A stepper motor is provided for moving the transducer across data tracks on the disk in response to external stepping pulses from a host system and to internal stepping pulses for recalibration. The application of such stepping pulses to a stepper motor control circuit is prevented when the disk is not loaded in the disk drive, in order to avoid the movement of the support beam in sliding contact with the top plate.

REFERENCES:
patent: 4604666 (1986-08-01), Kitahara et al.
patent: 4783706 (1988-11-01), Shoji et al.
patent: 4816942 (1989-03-01), Tanishima et al.
patent: 4884261 (1989-11-01), Dalziel

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