Patent ID: 6338888
Filing Date: 2002-01-15
Classification: G11B,Y10T

Abstract:
An optical recording medium comprising:a recording layer, a recording supplemental layer, and a protection layer disposed on a light permeable substrate, wherein: each of said recording layer and said recording supplemental layer is made mainly from an organic pigment material; each of said recording layer and said recording supplemental layer is made mainly from an organic pigment material; information can be recorded to and/or reproduced from said optical recording medium using a laser beam having a wavelength of &lgr;1; information can be recorded to and/or reproduced from said optical recording medium using a laser beam having a wavelength of &lgr;2 which is shorter than &lgr;1; a spectral absorbance of said recording layer is in a range between 5% and 35% at the wavelength of &lgr;1 and not less than 15% at the wavelength of &lgr;2; and said recording supplemental layer has a peak of spectral reflectance at a wavelength in the vicinity of &lgr;2.