Disk used for calibrating floating height of protrusion detectio

Details Disk used for calibrating floating height of protrusion detectio Disk used for calibrating floating height of protrusion detectio

1995-08-30

1997-10-07

Trammell, James P.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360103, 428694TR, G01B 2108

Patent

active

056754620

ABSTRACT:
A bump disk including a standard protrusion having a predetermined height and a plurality of reference protrusions positioned either on substantially the same radial line as the standard protrusion or on a circumferential line having substantially the same radial distance as the standard protrusion under a predetermined positional relationship with respect to the standard protrusion, a method of calibrating the floating height of a protrusion detection head by making use of a standard circumferential speed determined with the bump disk and a glide tester using such calibration method.

REFERENCES:
patent: 4828895 (1989-05-01), Bickert et al.
patent: 4988194 (1991-01-01), Hara et al.
patent: 5488857 (1996-02-01), Homma et al.
patent: 5557554 (1996-09-01), Kawaguchi et al.

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