Method and apparatus for producing optical disk base.

摘要

Method and apparatus for producing an optical disk base including the steps of injecting a photo-curable resin (5) into a cavity, curing the photo-curable resin (5) by irradiation with light (6), and demolding, characterized in that the photo-curable resin (5) is injected from an injection nozzle (10) having an outside diameter which is substantially equal to the diameter of the center hole of the optical disk base and also having a horn-shaped opening at the forward end thereof, with the injection nozzle (10) arranged at the center of the optical disk base; the forward end of said nozzle is closed after injection; and said photo-curable resin (5) is irradiated with light, with said injection nozzle (10) projected into said cavity.