Patent ID: 7166334

Claim:
A disc-shaped recording medium manufacturing method of forming a recording layer on a disc-shaped substrate having a central hole, and forming another recording layer on the surface of a spacer layer on said recording layer with said spacer layer interposed therebetween, comprising the steps of: applying an energy-ray curing resin for forming said spacer layer in the vicinity of said central hole, and thereafter disposing a light-transmittable stamper serving to form said another recording layer so as to cover said disc-shaped substrate; spreading said energy-ray curing resin over an entire surface of said disc-shaped substrate by rotating said disc-shaped substrate and said stamper; curing said energy-ray curing resin by irradiating said energy-ray curing resin with energy rays through said light-transmittable stamper, and thus forming said spacer layer; forming a notch by irradiating an outer peripheral edge of said stamper with a laser beam; and exfoliating said stamper.