Patent ID: 6928651
Filing Date: 2005-08-09
Classification: G11B

Abstract:
1. An initialization method of an optical recording medium wherein a second optical recording layer and first optical recording layer are successively stacked on a substrate through an interlayer, a protective layer is formed over the first optical recording layer, a recording film of at least the first optical recording layer has a phase change type recording medium, and recording/reproducing light is irradiated from the protective layer side at the time of recording/reproduction, wherein the material forming the interlayer has a sufficient transmittance with respect to a wavelength of the recording/reproducing light and has an absorption with respect to a wavelength of the initializing light and wherein, in a step of initialization by irradiating initializing light to 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.