Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
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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Armstrong Kratz Quintos Hanson & Brooks, LLP
Rodriguez Glenda P.
Young Wayne
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