Glide head with features on its air bearing surface for improved fly height measurement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 2002
Grant Date -
N/A
app pub date -
Dec 14, 1998
filing date -
Apr 16, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved glide head has optical marks on the air bearing surface. The glide heads can be used for detecting defects on disc surfaces following an evaluation of the fly height as a function of disc rotation. The optical marks provide a position for focusing light used in the optical measurement of fly height. The optical marks have measurably different optical properties from the portions of the air bearing surface not covered by an optical mark. The differences in optical properties of the optical marks can be used to adjust the position of the optical system relative to the glide head to ensure that the light is focused on an optical mark.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully