Optical recording medium

#1. Field of the Invention

#The present invention relates to an optical recording medium comprising a substrate formed therein with prepits between pregrooves, and an optical absorption layer and an optical reflection layer which are formed on the substrate, and in particular, to a high density optical recording medium which can reduce the error rate of address signals, and the jitter and the block error rate of recording signals.

#2. Related Art

#FIG. 1 is a sectional view schematically illustrating a structure of an optical recording medium according to the present invention;

#FIG. 2 is an enlarged view illustrating a part of a sectional structure of a substrate, as viewed by cutting the substrate with a plane which is orthogonal to pregrooves and including prepits;

#FIG. 3 is a sectional view illustrating a structure of the substrate, as viewed by cutting a substrate with a plane orthogonal to pregrooves, including prepits;

#(Embodiment 1)

#Referring to FIG. 1 which is a schematic sectional view illustrating a write-once type optical recording medium according to the present invention, the write-once optical recording medium 100 is composed of an optical transparent substrate 1 on which an optical absorbing layer 2, an optical reflecting layer 2 and a protecting layer 4 are successively formed. Explanation will be hereibelow made of a method of manufacturing this write-once optical recoding medium 100.

#At first, a glass master adapted to be used for manufacturing an optical transparent substrate was manufactured as follows;