MOLD FOR OPTICAL DISK

摘要

PURPOSE: To prevent the damage of a second mold and an outer peripheral ring by arranging the outer peripheral ring at a proper position by the pressure of the second mold when the second mold is opposed to a first mold to which a stamper is attached by the outer peripheral ring. CONSTITUTION: The opposed surfaces of an outer peripheral ring 15 and a second mold 14 are formed into a conical shape so that the outer peripheral ring 15 moves along the surface of a first mold 14 smoothly by the running of a running unit 17 and the outer peripheral ring 15 is not displaced in an axis direction from the first mold 14 by the energizing force of a ring energizing mechanism 20.