| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a substrate for an optical disk capable of enhancing a production efficiency, a yield in particular while suppressing generation of a black point, a flow mark and the like. SOLUTION: In the manufacturing method for the substrate for the optical disk formed by injection-molding a molten resin through a nozzle of an injection cylinder into a cavity of a mold having a stamper in at least one of a fixed mold and a movable mold, the resin contact surface of the nozzle in contact with the resin is covered with the inorganic film. COPYRIGHT: (C)2005,JPO&NCIPI |
