Method and apparatus of treating a disc plate
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United States of America Patent
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-
Apr 3, 2007
Issued Date -
N/A
app pub date -
May 17, 2004
filing date -
Mar 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of treating a disc plate. has the following operations of: molding a mold disc plate through an injection molding; and spinning the mold disc plate at a high spin speed. The spinning operation has at least one of the following two sub-operations of: reducing a warp of the mold disc plate with a centrifugal force caused during the spinning operation, and reducing a temperature of the mold disc plate during the spinning operation. Moreover, an apparatus of treating a disc plate has: a conveyer for conveying a mold disc plate obtained through an injection molding; a disc bench for receiving the mold disc plate conveyed with the conveyer; and a spin driver for spinning the disc bench when a temperature of the mold disc plate is higher than 90.degree. C., to thereby spin the mold disc plate.
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