Die for molding disc substrates
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United States of America Patent
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Dec 6, 2005
Grant Date -
Nov 18, 2004
app pub date -
Apr 23, 2004
filing date -
May 14, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a stamper holding mechanism that is stable, cannot be loosened, that does not use frictional forces and is not affected by vibration and temperature variations. To that end, there is provided a die, for molding disc substrates, that forms a cavity 23 by providing a stamper 10 on either one or both of a stationary mirror plate 8 of a stationary die 1 and a movable mirror plate 16 of a movable die 11, including: rotation mechanism for allowing a holding member, which holds the stamper 10 on the mirror plate and which can be removable, to advance or retreat; and engagement mechanism for abutting on the rotation mechanism to be engaged therewith in a direction to remove the holding member when the rotation mechanism is rotated in the direction.
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