Method of making a plurality of optical record disc substrates, and an apparatus therefore.

摘要

A method of making a plurality of optical record disc substrates, comprising: injecting a resin material into a plurality of disc-shaped cavities which are formed by closing a fixed mold half and a movable mold half; and cooling the injected resin material in the cavities; wherein the cavities are grouped into a plurality of groups so that each group includes not less than one cavity, and each group is provided with a common actuation means so that each actuation means is independently operated.