| 摘要 |
PURPOSE:To obtain an optical recording disk which is dynamically balanced, uniform in joined width, and has a hollow structure by attaching an adhesive in spots to outer and inner peripheries of the two substrates and curing and integrating it. CONSTITUTION:This optical recording disk is formed so that a discoid substrate 1 provided with a recording layer 2 on the surface and another substrate which is a protective substrate 3 are faced with each other in such a manner that recording layer 2 is positioned at the inner side and the 4 containing a spacer is applied in spots to outer and inner peripheral sections 7 and 8 of the substrates 1, 3, then cured integrally. Thus the optical recording disk which is uniform in the width of the joining section and dynamically balanced can be obtained. |
