| 摘要 |
PURPOSE:To easily form not only a guide track but a magnetic film, by providing a magnetic layer having a vertical magnetic anisotropy and light transmitting property on a transparent or translucent substrate and further providing a guide track recording layer on the magnetic layer with a vacant space layer between them. CONSTITUTION:A magnetic layer 3 is formed on a transparent or translucent substrate 1' by sputtering, vacuum deposition, etc., and a guide track recording layer 2' made of a material which changes in color or melts and becomes porous and changes in the reflectance or transmittance upon receiving a laser light is formed on the magnetic layer 3 with a vacant space layer 5 between them. The vacant space layer 5 is formed by bonding the end sections of the magnetic layer 3 to the end sections of the guide track recording layer 2' with a spacer 6 between them and a protective layer 4 made of the material for making the transparent substrate is formed on the guide track recording layer 2'. Therefore, any complicated and expensive devices and processes used for forming the guide track in conventional methods are not required. |
