| 摘要 |
PURPOSE:To industrially obtain the substrate satisfying the requirements specified in ISO by forming an inner peripheral pawl for fixing a stamper in the apparatus for production for injection molding of the substrate and constituting the height of this inner peripheral pawl to a specific length or below. CONSTITUTION:On the apparatus for production for injection molding of the substrate f an information signal recording medium, the inner peripheral pawl 7a for fixing the stamper 5 is formed and the height h of this pawl 7a is made to be 0.3mm. The height h of the inner peripheral pawl 7a is the size regulated from the part facing the tamper 5 up to the tallest part. This height h is preferably made to be 0.25 to 0.3mm. The substrate warped to 2 to 6mrad in such a manner that the side to be recorded with information is recessed toward the inner peripheral reference plane of the substrate according to such apparatus for production for the substrate. The information signal recording medium provided with the film, such as recording film, on the substrate constituted in such a manner satisfies the requirements specified in ISO. |
