INFORMATION RECORDING MEDIUM INITIALIZATION METHOD, INFORMATION RECORDING MEDIUM INITIALIZATION DEVICE, AND INFORMATION RECORDING MEDIUM

摘要

A part of a recording film is partially initialized by a first optical beam (A) having an initialization wavelength.  A focus adjustment is executed by a second optical beam (B) having a wavelength corresponding to the wavelength for recording/reproducing information onto/from an information recording medium.  The recording film is initialized by the first optical beam (A).  Thus, it is possible to surely initialize the recording film of all the information layers of the multi-layer information recording medium having a plurality of information layers.