Slider for calibration and correlation of flying height testers

Details Slider for calibration and correlation of flying height testers Slider for calibration and correlation of flying height testers

1997-03-07

1998-06-16

Font, Frank G.

Optics: measuring and testing

Standard

356357, G01J 102

Patent

active

057679649

ABSTRACT:
A method for calibration and correlation of flying height testers with a calibration slider. The calibration slider has an air bearing surface that contains a flat portion and a sloped portion. To verify accuracy and correlation between flying height testers, the calibration slider is loaded adjacent to a rotating transparent disk of a tester. The slider is separated from the disk by an air film and flies at a zero pitch angle. Zero pitch angle can be attained by adjusting the rotational speed of the disk. The flying height tester includes an optical system which can measure the air film with a light beam that is directed through the disk and reflected from the slider.

REFERENCES:
patent: 4346996 (1982-08-01), Miller
patent: 4624564 (1986-11-01), Dahlgren
patent: 4998194 (1991-03-01), Hara et al.
patent: 5220408 (1993-06-01), Mager
patent: 5410402 (1995-04-01), Li et al.
patent: 5453831 (1995-09-01), Li et al.

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