Apparatus for analyzing the interface between a recording disk a

Details Apparatus for analyzing the interface between a recording disk a Apparatus for analyzing the interface between a recording disk a

1984-05-31

1985-08-06

Swisher, S. Clement

Measuring and testing

Miscellaneous

324212, 360 25, G01B 528, G01N 1908

Patent

active

045328021

ABSTRACT:
A read-write head is provided with a plurality of piezoelectric transducers which produce signals related to its movement as it flies over an adjacently rotating recording disk. By filtering these signals to determine their spectral components in low, medium and high ranges, hard contacts between the head and disk, disk wear or roughness and head movement can be determined.

REFERENCES:
patent: 3683273 (1972-08-01), Behr et al.
patent: 4416144 (1983-11-01), Chen et al.
patent: 4422322 (1983-12-01), Spangler
patent: 4504871 (1985-03-01), Berwick

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