| 摘要 |
PURPOSE:To prevent the formation of a protrusion on the surface of the body of a disk when the body of the disk is squeezed and a clamping plate is connected. CONSTITUTION:A groove 17 is cut in the face 1B of the body 1 of a disk to be pressed or in a part around the face 1B, the face 1B is heated and pressed with a heating-pressing member 5 to squeeze part of the plastic and a clamping plate 2 is connected to the body 1 of the disk. When the body 1 of the disk is heated and pressed with the heating-pressing member 5 with an upper pressing face 5B above a pressing face 5A and the upper surface of the body 1 of the disk is pressed with the upper pressing face 5B, the formation of a protrusion 16 can be prevented. |
