To provide an optical recording medium which is less fluctuated in bit size and suppresses the fluctuation in recording characteristics, such as jitter and error rate, even against fluctuation in laser power and fluctuation in pulse width and can acquire a sufficient recording margin.
This optical recording medium is formed by successively laminating at least a recording layer containing an organic dye which is substantially free of the change in an chemical composition by heat on the side of the temperature lower by 50°C and more than the initiation temperature of a main weight loss under a nitrogen atmosphere in thermal analysis, is ≤2%/°C in weight loss inclination in the main weight loss process and is 15% to 75% in the total weight loss %, a metallic reflection layer and a protective layer, on a transparent substrate with guide grooves formed thereon.
NARA RYOSUKE
MURAYAMA SHUNSUKE
INATOMI YUJI
MISAWA TSUTAYOSHI
YAMAMOTO CHEMICALS INC
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