发明名称 INTERMEDIATE FOR OPTICAL RECORDING MEDIUM, MOLDING METAL MOLD, MOLDING APPARATUS, AND MANUFACTURING METHOD OF OPTICAL RECORDING MEDIUM
摘要 PROBLEM TO BE SOLVED: To provide an intermediate for an optical recording medium which is uniformly coated with a resin, is stocked in a stable state while saving space, transported by an existing transport mechanism even in the nonhardened state of the coated resin, and a loading center hole can be formed without burs. SOLUTION: In the intermediate ME1 for an optical recording medium which is manufactured prior to manufacturing the optical recording medium in which a loading center hole has been formed and a mechanism layer on one surface to carry out at least one of recording and reproducing of information, a circular recess DE with a diameter equal to that of the loading center hole is formed in the center of the other surface, a temporary center hole TH smaller in diameter than the circular recess DE is formed in the center of the circular recess DE, a cylindrical ring RI which has an outside diameter smaller than that of the loading center hole, an inside diameter equal to/larger than the diameter of the temporary center hole TH, and is substantially concentric with the temporary center hole TH is projectedly fromed one surface. COPYRIGHT: (C)2004,JPO
申请公布号 JP2004118952(A) 申请公布日期 2004.04.15
申请号 JP20020282159 申请日期 2002.09.27
申请人 TDK CORP 发明人 KOYAMA ATSUSHI;USAMI MAMORU;YAMAYA KENJI;DOMON MIKIO
分类号 B29C45/37;B29C41/04;B29C41/20;B29C45/26;B29C45/38;B29C45/56;B29D17/00;B29L17/00;G11B7/26;(IPC1-7):G11B7/26 主分类号 B29C45/37
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