Hard disk testing method

Details Hard disk testing method Hard disk testing method

1989-06-01

1991-07-16

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 7706, 360 7711, G11B 2736, G11B 5596

Patent

active

050329324

ABSTRACT:
A hard disk testing apparatus is comprised of a pair of carriages, each provided with a pair of upper and lower heads, and one of the upper and lower heads on either of the carriages is mounted on a micro adjustment carriage. With this structure, the head mounted on the fixed carriage writes a signal, and the head mounted on the carriage equipped with the micro adjustment carriage reads the signal. The structure and operation of the apparatus effectively prevent omission or duplication of testing tracks at the border between a test range of a hard disk covered by one of the pair of carriages and another test range covered by the other carriage.

REFERENCES:
patent: 4330806 (1982-05-01), Iwabuchi et al.
patent: 4754343 (1988-06-01), Cascio, Sr. et al.

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