| 摘要 |
PURPOSE:To paste two disc with high precision and ease by providing a laminated part each other to regulate the fixed and pasted position each other on the position except the information recording area of a pair of an optical disc base plate. CONSTITUTION:A protruding part 6 to regulate the position of two fixed base plates 5a, 5b each other on the peripheral side of the recording area except the information recording area of a pair of optical disc base plates 5a, 5b for both sides reproduction and a fitting part, which consists of a recessed part 7 engaged with it are provided. At the time of pasting, these protruding part 6 and recessed part 7 are fitted to carry out positioning. Therefore, tools and positioning device become unnecessary and two disc can be pasted with high precision and ease. |
