| 摘要 |
PURPOSE:To facilitate the administration of the optical disk in the production process from injection molding to packing by putting a mark for title identification to a specific region in the non-recording area where information is not recorded by transferring from a stamper. CONSTITUTION:The part between from the innermost circumference 5 to the inside circumference 3 of the recording surface is formed as the non-information recording area between the outside circumference 2 to the inside circumference 3 of the optical disk 1. A serial number 6 and the mark 7 for title identification are put to the part excluding a label sticking part 4 in this non-information recording area. The serial number 6 and the mark 7 for identification are attached by the method of previously putting the mark for title identification to a stamper and putting the mark 7 to the optical disk 1 by transfer. The weight balance of the disk 1 is measured and directions of the optical letters of the serial number 6 are matched in the direction where there is the weight unbalance, then the serial number 6 is put by marking. The administration of the optical disk is thus facilitated in the production process from the injection molding to packing. |
