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METHOD FOR MANUFACTURING DISCOID OPTICAL RECORD MEDIUM AND DISCOID OPTICAL RECORD MEDIUM
METHOD FOR MANUFACTURING DISCOID OPTICAL RECORD MEDIUM AND DISCOID OPTICAL RECORD MEDIUM
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机译:迪斯科光学记录介质和迪斯科光学记录介质的制造方法
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摘要
A disc-shaped optical recording medium formed by carrying out a film formation process on a disc-shaped substrate material and completed by forming a center hole at the last step is manufactured in a manner such that no eccentricity will occur when the recording medium is loaded onto a drive. ??At the last step of an optical disc manufacturing process, i.e., at the time of opening a hole in the center part 26 of the disc-shaped substrate material 12 formed with at least a resin layer on one side thereof, the center part 26 is removed in a manner such that the diameter of the chucking center hole 28 is larger on the disc-shaped substrate material 12 side than on the light transmitting resin layer 22 side of the disc-shaped optical recording medium 30, thereby manufacturing the disc-shaped optical recording medium 30. IMAGE IMAGE
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