| 摘要 |
<p>PURPOSE:To suppress the shift of a data transfer position with respect to the central hole of a disk substrate by simultaneously performing the punching operation of the disk substrate and a protective film, data transfer operation and the covering operation of a data transfer surface with the protective film in parallel by the opening and closing operation of one set of upper and lower molds. CONSTITUTION:A laminate 10 wherein a protective film 8 is superposed on the upper surface of a disk substrate sheet 6 is successively and intermittently moved by a laminate supply apparatus 16 to be placed on the lower mold 2 of a stamping press apparatus 14 and an upper mold 4 is allowed to fall in such a state that the lower mold 2 having the laminate 10 placed thereon is subjected to ultrasonic vibration by an ultrasonic wave generator 38 to perform operation for punching the laminate 10 to form a disk substrate and a protective film 116 into a doughnut-shape, operation for transferring the data of a stamper 46 to the superposed surface of the disk substrate 114 with the protective film 116 and operation for welding the disk substrate 114 and the protective film 116 to cover the data transfer surface of the disk substrate with the protective film 116 simultaneously in parallel by on stamping press apparatus 14. By this method, an objective disk 12 can be prepared.</p> |
