Method of inspecting magnetic recording medium based on...

Details Method of inspecting magnetic recording medium based on... Method of inspecting magnetic recording medium based on...

2006-06-06

2006-06-06

Patidar, Jay (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

C073S105000

Reexamination Certificate

active

07057385

ABSTRACT:
A magnetic recording medium inspection method detects small protrusions that constitute defects on the surface of a magnetic recording medium. The method includes flying a glide inspection head at a predetermined height over the surface of the moving magnetic recording medium; detecting a contact duration time during which the glide head is in contact with a protrusion on the surface of the magnetic recording medium using a contact detection sensor attached to the glide inspection head; and determining the small protrusion based on the contact duration time.

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