Method of evaluating positioning accuracy of a magnetic head...

Details Method of evaluating positioning accuracy of a magnetic head... Method of evaluating positioning accuracy of a magnetic head...

2007-03-27

2007-03-27

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

Reexamination Certificate

active

10711941

ABSTRACT:
A method of evaluating the positioning accuracy of a magnetic head tester can accurately test magnetic heads and so can reliably provide non-defective goods. In a method of evaluating the positioning accuracy of a magnetic head tester that tests the performance of a magnetic head14by carrying out writing and reading operations on a magnetic medium12using the magnetic head14. A plurality of GAPS profiles are acquired by repeatedly carrying out a GAPS test that measures a GAP offset amount for the same magnetic head14that has been attached to the magnetic head tester, a GAP offset fluctuation amount is calculated from the acquired plurality of GAPS profiles, and the calculation result is set as an index for evaluating the position reproducibility of the magnetic head.

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