| 摘要 |
PURPOSE:To improve dynamic balance and productivity by holding a pair of disk substrates so as to face each other via a space provided therebetween, immersing the peripheral parts of the substrates into an adhesive agent liquid and solidifying the adhesive agent sticking thereto, thereby integrating the substrates. CONSTITUTION:Recording layers 41, 43 are concentrically laminated on the disk-shaped transparent resin substrates 31, 35. The substrates 31, 35 are connected and held by an outside connecting member 5 in such a manner that the layers 41, 45 face each other via the prescribed space. While the substrates 31, 35 are rotated circumferentially, the peripheral parts thereof are immersed into the adhesive agent liquid and the adhesive agent sticking thereto is solidified to integrate the substrates. The inside peripheral part of the substrates 31, 35 and formed by adhering an welding the annular inside connecting member 6 made of a resin. The space between the substrates 31, 35 are the relative positions are, therefore, exactly set and the stage is continuously and efficiently executable. The dynamic balance during use and the productivity are thereby improved. |
