Method for predicting and improving wear characteristics of lase

Details Method for predicting and improving wear characteristics of lase Method for predicting and improving wear characteristics of lase

1997-08-12

1999-11-16

Shah, Kamini

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

702 33, 360130, G01B 518, G01B 530, G06F 1900

Patent

active

059873914

ABSTRACT:
A method for predicting total bump height reduction from volume wear rate data for a laser textured magnetic disk. In this method, a bump topography function, r(h), is first established by which the bump half-width, r, is expressed as a function of bump depth, h. Then the bump height depth after first revolution, h.sub.1, is calculated according to the following equation: ##EQU1## Based on the observation of constant wear volume per cycle, the bump height depth after each subsequent revolution, h.sub.i, i=2 . . . N, is calculated according to the following equation: ##EQU2## The so-calculated h.sub.N is the total bump height reduction after the Nth revolution.

REFERENCES:
patent: 5761003 (1998-06-01), Sato
patent: 5902665 (1999-05-01), Kuroda et al.

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