Disk Molding Mold, Mirror Surface Disk, and Method of Manufacturing Mirror Surface Disk
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United States of America Patent
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N/A
Issued Date -
Sep 17, 2009
app pub date -
Mar 12, 2007
filing date -
Apr 21, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An object is to prevent a disk substrate from warping to thereby improve the quality of the disk substrate. A disk molding mold includes a first support plate; a first mirror surface disk attached to the first support plate; a second support plate; and a second mirror surface disk attached to the second support plate and facing the first mirror surface disk. At least one of the first and second mirror surface disks comprises a first plate, and a second plate disposed to surround at least a front surface of the first plate. The first plate comprises a temperature control flow passage (93, 94) formed on a surface thereof facing the first support plate. The second plate comprises a heat insulation section formed on a surface thereof facing the first plate such that the heat insulation section corresponds to the temperature control flow passage (93, 94). Since the distribution of heat in the first and second plates is made uniform, a molding material within a cavity can be cooled uniformly.
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