Simulation disk for measuring flying height of a magnetic head

Details Simulation disk for measuring flying height of a magnetic head Simulation disk for measuring flying height of a magnetic head

1998-05-13

1999-12-14

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 642, 428 644, 428 653, 428702, 428913, B32B 300

Patent

active

060014458

ABSTRACT:
A transparent simulation disk for measuring flying height of a magnetic head (i.e., distance between a magnetic head and a magnetic disk such as a hard disk of a computer) in place of a magnetic disk is made of a SiO.sub.2 --R.sub.2 O (where R is Li, Na or K) glass or glass-ceramic having electric resistivity of 10.sup.8 -10.sup.14 .OMEGA.cm and abrasion of 90 or below.

REFERENCES:
patent: 5757492 (1998-05-01), Tokutomi
patent: 5789756 (1998-08-01), Guzik
patent: 5831733 (1998-11-01), De Groot

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