Calibration standard for flying height tester having a head moun

Details Calibration standard for flying height tester having a head moun Calibration standard for flying height tester having a head moun

1994-12-16

1996-09-03

Gonzalez, Frank

Optics: measuring and testing

Standard

356357, G01J 102

Patent

active

055528848

ABSTRACT:
The present invention provides a calibration standard for the uniform calibration of flying height testers. The calibration standard comprises a head assembly held in contact with a transparent disc through the use of a load spring. The transparent disc has a plurality of grooves formed in a surface facing the head assembly. A cover case is attached to the glass disc at one end and provides a sealed environment for the interface between the head assembly and the transparent disc.

REFERENCES:
patent: 4346996 (1982-08-01), Miller
patent: 4624564 (1986-11-01), Dahlgren
patent: 4988194 (1991-01-01), Hara et al.
patent: 5220408 (1993-06-01), Mager
patent: 5410402 (1995-04-01), Li et al.
Fumitaka Muranushi, Katsuyuki Tanaka, Yoshinori Takeuchi, Estimation of the Zero-Spacing Error Due to a Phase Shift of Reflected Light in Measuring a Magnetic Head Slider's Flying Height by Light Interference, Adv. Info. Storage Syst., vol. 4, 1992 American Society of Mechanical Engineers.

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