Method for testing performance of a magnetic head slider

Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07920346

ABSTRACT:
A method for testing performance of a magnetic head slider includes the steps of: (1) rotating the disk and positioning the slider over the rotating disk at an initial fly-height; (2) exciting the fly-height actuator to make the slider touch the disk and recording a touch down spacing of the read head of the slider; (3) backing off the slider at a predetermined backoff amount from the disk; (4) testing dynamic performance of the slider to obtain a reference value which is related to the spacing between the disk and the slider; (5) varying the initial fly-height of the slider; (6) repeating the steps (2) to (4) with the backoff amount fixed; and (7) calculating a dynamic fly-height gamma ratio based at least in part on the recorded touch down spacing and the obtained reference values.

REFERENCES:
patent: 5673156 (1997-09-01), Chen et al.
patent: 5991113 (1999-11-01), Meyer et al.
patent: 7119979 (2006-10-01), Fong et al.
patent: 7180692 (2007-02-01), Che et al.
patent: 7215495 (2007-05-01), Che et al.
patent: 7292401 (2007-11-01), Shen et al.
patent: 2005/0174665 (2005-08-01), Zhang et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for testing performance of a magnetic head slider does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for testing performance of a magnetic head slider, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for testing performance of a magnetic head slider will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2688874

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.