Patent ID: 6507547
Filing Date: 2003-01-14
Classification: G11B

Abstract:
A medium for recording optical information, comprising:a translucent pregrooved substrate; a light-absorbing layer that is formed on the substrate and that contains a light-absorbing substance composed of a dye for absorbing recording light based on a laser beam; and a light-reflecting layer that is formed on the light-absorbing layer and is designed to reflect a laser beam, wherein information is recorded by irradiating said light-absorbing layer with said recording light; said medium for recording optical information satisfying a relation A2/A1&gE;1.30, where A1 (Abs) is an absorbance of said light-absorbing layer at a wavelength of said recording light under room-temperature conditions, T (Â°C.) is a pyrolysis temperature of said light-absorbing layer, and A2 (Abs) is an absorbance at a wavelength of said recording light under Tâˆ’50 (Â°C.) conditions.