| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently prevent the generation of mold release irregularity in a molded article to enhance the quality of the molded article. SOLUTION: A mold for molding a disk has a base plate 11, a mirror surface block 12 attached to the base plate 11, a cylindrical inner holder 53 arranged in a holes 14 formed to both of the base plate 11 and the mirror surface block 12 and holding a stamper 15, and a bush 61 equipped with a cylindrical part 63 arranged inside the diametric direction of the inner holder 53 and extended through the inner holder 53. The inner peripheral surface of the inner holder 53 and the outer peripheral surface of the bush 61 form a conical surface, and an air blow slit 67 for blowing off air is formed between these inner and outer peripheral surfaces. When the inner holder 53 is set, the fitting clearance of the bush 61 to the inner holder 53 can be perfectly made zero. |
