Method and apparatus for measuring the floating amount of the ma

Details Method and apparatus for measuring the floating amount of the ma Method and apparatus for measuring the floating amount of the ma

1987-02-27

1989-03-21

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356359, G01B 902

Patent

active

048137820

ABSTRACT:
An apparatus for measuring the floating amount of the magnetic head comprising a single color light source such as laser, a rotating glass disk, a light scanner section, a photoelectric converter element, and an interference light strength computing section (or waveform memory section and computer section). Therefore, static behaviors such as pitch angle and balance of the magnetic head can be measured along with dynamic behaviors such as floating and frequency fluctuations thereof. Even when the floating amount of the magnetic head is extremely low, the measurement can be made accurately in a shorter time period with a high S/N ratio.

REFERENCES:
patent: 4593368 (1986-06-01), Fridge et al.
patent: 4627733 (1986-12-01), Wada

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