Patent ID: 6699591
Filing Date: 2004-03-02
Classification: G11B,Y10T

Abstract:
An optical information recording medium comprising a substrate including a groove that has a track pitch of 200 to 400 nm and a depth of 20 to 150 nm, the substrate having successively disposed thereon a light-reflective layer, a recording layer containing a dye and on which information is recordable by a laser beam having a wavelength of 600 nm or less, and a cover layer,wherein the recording layer contains at least one organic solvent-soluble compound having an absorption maximum in the range of 300 to 450 nm and an absorbance of 0.07 or more at a recording laser wavelength, and at least one organic solvent-soluble compound having an absorption maximum in the range of 300 to 450 nm and an absorbance of lower than 0.07 at a recording laser wavelength.