| 摘要 |
PURPOSE:To provide the optical recording medium having an excellent jitter characteristic by using dyes having the prescribed value or below of the calorific value at the time of the pyrolysis in air for the dyes to be used for a recording layer. CONSTITUTION:This optical recording medium is constituted by successively laminating the recording layer contg. the dyes and a coating layer on a transparent substrate consisting of an injection molded resin. The dyes, such as polymethine dyes, phthalocyanine dyes and naphthalocyanine dyes, having absorption at the oscillation wavelength of a semiconductor laser, are used as the dyes to be used for the recording layer contg. the dyes. The dyes having <=3500cal/g calorific value at the time of the pyrolysis of the dyes in the air are preferable as the dyes and the dyes having <=3000cal/g are more preferable. An error rate and jitter value increase when bit length recording is executed if the calorific value is higher than the above-mentioned range and, therefore, such calorific value is undesirable. |
