Molded glass substrate for magnetic disk and method for manufacturing the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
May 9, 2002
app pub date -
Jul 23, 2001
filing date -
Jul 21, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A molded glass substrate for a magnetic disk is manufactured in the following manner: press-molding a heated glass material in the inside space of a molding die including a pair of dies, each having a predetermined processing plane, and a barrel die for slidably guiding the dies while forming the outer circumference of the glass material joined to both principal surfaces corresponding to the dies as a molding-free face; cooling the press-molded glass substrate; and forming a predetermined through-hole in the central portion of the glass substrate. This method enables manufacturing that prevents generation of industrial waste, such as glass power, abrasive, and solvent, as much as possible.
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