| 摘要 |
<p>PROBLEM TO BE SOLVED: To recover a board, material, a recording layer forming material, a reflective film metal, a protective layer, etc., from an optical reproducing disk such as a CD-Audio, a CD-ROM, a CD-RAM, a CD-R, a CD-RW, a DVD- RAM, a DVD-R and a DVD-RW, a magneto-optical recording/reproducing disk, a magneto-optical recording disk and the like for reutilization. SOLUTION: For the fixed optical disk, particles or broken pieces of a resin material, an inorganic material or metal are sprayed on its full surface. The particles or broken pieces of the resin material, the inorganic material or the metal are separated by scraping off a recording layer forming material, a reflective film metal and a protective layer from a board material forming the optical disk. Then, each of the separated recording layer forming material, reflective film metal and protective layer is eliminated to enable reutilization of the board material.</p> |
