Thin film flying height calibration disk for calibrating flying

Details Thin film flying height calibration disk for calibrating flying Thin film flying height calibration disk for calibrating flying

1996-09-24

1998-09-15

Rosenberger, Richard A.

Optics: measuring and testing

Standard

356357, G01J 102

Patent

active

058087362

ABSTRACT:
A calibration medium that is used to calibrate a flying height tester which measures the gap of an air bearing formed between a magnetic recording head and a substrate. The medium contains a first ridge and a second ridge that extend from an underlying substrate. The ridges may be coated with a reflective material. A flying height tester can be calibrated by measuring light reflected from each ridge. The ridges have varying thicknesses so that the calibration medium will produce multiple data points.

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