| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a die for manufacturing a sticking type optical recording medium capable of securing stuck appearance quality and the flatness of a clamp area without generating cracking or chipping near the center hole of the sticking type optical recording medium even at the time of being mounted on the drive device of a self chucking type. <P>SOLUTION: The die for manufacturing the sticking type optical recording medium is provided with a sprue bush, a stamper presser, a stamper for forming a data recording surface composed of a pit or a groove, a cut punch, a sleeve, a core nest, a fixed side die part, a movable side die part and a pawl shape for pressing the stamper on the stamper presser, and is for manufacturing an optical recording medium substrate. On at least one of the sprue bush and the stamper presser, at least one or more recessed or projected shapes are formed. <P>COPYRIGHT: (C)2003,JPO |
