Patent ID: 6790504
Filing Date: 2004-09-14
Classification: B32B,G11B,Y10T

Abstract:
A phase-change optical information recording medium in which information can be recorded, erased and read, comprising:a substrate; and a recording layer located overlying the substrate and achieving a crystal phase and an amorphous phase, wherein the recording layer satisfies the following relationship: Acwherein Ac represents an absorptance of the recording layer in the crystal phase against light having a wavelength of from 370 nm to 450 nm and Aa represents an absorptance of the recording layer in the amorphous phase against the light having a wavelength of from 370 nm to 450 nm; andwherein information is recorded in the recording layer with light having a wavelength of from 370 nm to 450 nm at a recording density of 0.05 &mgr;m/bit to 0.16 &mgr;m/bit.