An initialization method of an optical recording medium having a plurality of
optical recording layers capable of reducing uneven initialization due to light
interference caused at the time of initialization without deterioration of information
recording/reproducing signal characteristics of the recording layers is provided.
An initialization method of an optical recording medium, wherein a second optical
recording layer and a first optical recording layer are successively stacked via
an interlayer on a substrate, a protective layer is formed further on the first
optical recording layer, a recording film in the first optical recording layer
comprises a phase change type recording material, and a recording/reproducing light
is irradiated from the protective film side at the time of recording/reproducing,
a material composing the interlayer has a sufficient transmittance for a wavelength
of the recording/reproducing light and absorption for an initializing light, and,
in a step of initializing by irradiating an initializing light on the first optical
recording layer from the protective film side, laser light having a wavelength
range of 200 nm to 400 nm is used as the initializing light.
