| 摘要 |
PURPOSE:To prevent the adhesive agent bleeding to the inner peripheral edge side of the substrates of the optical disk from sticking to a centering jig by previously mounting hubs respectively to two sheets of the optical disk substrates, at least one sheet of which has a recording layer, and then sticking the substrates to each other. CONSTITUTION:The hubs 5a, 5b are respectively mounted to two sheets of optical disk substrates 1a, 1b. The one optical disk substrate 1b mounted with the hub 5b is previously set to the centering jig 6 and the adhesive agent 4 is applied annularly on the substrate 1b; thereafter, the other optical disk substrate 1a previously mounted with the hub 5a is superposed thereon and is pressurized. The adhesive agent 4 applied annularly by the pressurization is forcedly spread to the inner peripheral edge side and outer peripheral edge side between the substrates 1a and 1b. The adhesive agent 4 bleeding to the inner peripheral edge side of the optical disk substrates 1a, 1b does not come into contact with the centering jig 6 as the outside diameter of the centering jig 6 is extremely smaller than the inside diameter of the optical disk substrates 1a, 1b. |
