Glass substrate for magnetic disk apparatus

Details Glass substrate for magnetic disk apparatus Glass substrate for magnetic disk apparatus

2011-07-12

2011-07-12

Bernatz, Kevin M. (Department: 1785)

Stock material or miscellaneous articles

Magnetic recording component or stock

Magnetic recording media substrate

C428S848100, C428S848600, C428S064100, C360S235400

Reexamination Certificate

active

07976967

ABSTRACT:
A main surface of a glass substrate for a magnetic disk is disk-shaped and has a ski jump on an outer peripheral end portion of the main surface opposing a magnetic head slider to be loaded. A rate of change of angles of tangents to a slope of the ski jump in a radial direction in a range between an inner circumferential side and a transition point on the slope is equal to or less than 10/W μrad/mm where W is a width of the magnetic head slider.

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Machine translation JP 2006099949, Apr. 2006, Haneda et al.

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