| 摘要 |
PURPOSE:To make the shape of a recording pit always constant, by forming an optical recording medium performing recording and regeneration using laser beam by providing an optical recording layer consisting of a light reflecting layer, a porous recording auxiliary layer and a beam absorbing layer on a substrate. CONSTITUTION:A porous recording auxiliary layer 7 is interposed between a beam reflecting layer 6 and a beam absorbing layer 8 to laminate all of the layers 6, 7, 8 to form an optical recording layer 2a which is, in turn, provided on a substrate 3 so as to bring the beam absorbing layer 8 to a lower side and a protective layer 4 is provided as the outermost layer to form an optical recording medium. When laser beam 1 is allowed to irradiate the optical recording medium from the side of the optical recording layer 2a to perform the writing of information, a recording pit 5 is formed to the beam irradiation part of the optical recording layer 2a. A this time, the porous voids of the beam irradiation part are reduced with the softening and melting of the porous recording auxiliary layer 7 and a pit having a stable size is formed by this mechanism and an excellent regeneration signal can be imparted. |
