Optical recording medium, recording and reproducing method thereof, and optical recording and reproducing apparatus

A recording and reproducing method of the optical recording medium, wherein at least any one of recording and reproducing of the information is performed on the first recording layer and the second recording layer by applying a light with a wavelength of 580 nm to 720 nm to the surface of the first substrate of the optical recording medium;

• wherein the optical recording medium comprises:
• a first substrate,
• a first information layer,
• an intermediate layer and
• a second substrate in this order,
• wherein the first information layer comprises a first recording layer,
• the second information layer comprises a second reflective layer, a second recording layer comprising an organic dye and a protective layer, and
• the pyrolysis temperature range, which corresponds to the DTA peak width based on the thermal analysis of the organic dye in the second recording layer, is 45° C. or less.

A recording and reproducing apparatus comprises

• a light source and
• the optical recording medium,
• wherein at least any one of recording and reproducing of the information is performed on the first recording layer and the second recording layer is performed by applying a light with a wavelength of 580 nm to 720 nm to the surface of the first substrate of the optical recording medium, and the optical recording medium comprising:
• a first substrate,
• a first information layer,
• an intermediate layer and
• a second substrate in this order,
• wherein the first information layer comprises a first recording layer,
• the second information layer comprises a second reflective layer, a second recording layer comprising an organic dye and a protective layer, and
• the pyrolysis temperature range, which corresponds to the DTA peak width based on the thermal analysis of the organic dye in the second recording layer, is 45° C. or less.