Die, formation item, making machine and disk shaped component for disk formation

摘要

It designates that the die, the formation item and the making machine which for disk formation can be possible, improve the quality of the formation item to make the copying characteristic of pattern of the stamper high, are offered as purpose. In the vicinity of the peripheral edge of the 1st and 2nd disk shaped component, the cooling power by the medium passage of the disk shaped component of stamper side, makes lower than the cooling power by the medium passage of the disk shaped component of non stamper side. Stamper side smellIt decreases the heat quantity which from the peripheral edge of the disk shaped component of the te and stamper side is emitted outside the die for disk formation, it is possible to prevent the fact that the disk shaped component of stamper side becomes cold too much. As a result, it is possible, to prevent the fact that copying characteristic locally becomes low the cavity space (C) in the vicinity of the peripheral edge, it is possible to improve the copying characteristic of minute pattern the cavity space (C) over the whole. And, it is possible to improve the quality of the formation item.