Patent ID: 6019863
Filing Date: 2000-02-01
Classification: B29C,B32B,G11B

Abstract:
A method of manufacturing an optical disk comprising:forming light transmissive disk substrates having a common central hole and recording regions in radially intermediate regions, pits representing recording information being transferred onto said recording regions by means of a stamper, and forming a recess portion recessed in a thickness direction in a portion of at least one of the light transmissive disk substrates around said central hole;providing reflection films on those surfaces of the light transmissive disk substrates which are provided with said pits;providing protection films on upper surfaces of the reflection films;providing an indication member by one of printing and attachment on a bottom surface of said recess portion in at least one of the light transmissive disk substrates, which are provided with said protection films; andpressing, when attaching first and second optical disks having the indication member to each other as one body by means of an adhesive such that the reflection films are opposed to each other, outer sides of the first and second optical disks such that those portions of the first and second optical disks which face the indication member are more lightly pressed than other portions of the first and second optical disks.