| 摘要 |
PURPOSE:To form selectively a reflecting film with good mass-productivity and high reliability by masking an outer circumferential part and a slightly inner circumferential part from the outermost circumferential part of a record disc center hole respectively by means of a disc and a ring-shaped disc and applying vapor-deposition or the like from a link rod side in this state so as to form selectively the reflecting film on the record disc surface. CONSTITUTION:The disc 14 covering the inner circumference of the record disc 1 and the ring-shaped disc 15 covering the outer circumference of the record disc 1 are provided and these two discs 14, 15 are connected by three connectig rods 16. Further, a handle part 17 having a hook-shaped lock part 17a to the tip is formed incorporatedly to the disc 14 covering the inner circumference of the record disc 1 and this is fitted by being pressed into a center hole 18a of the base member 18. A horizontal part 16a of the connecting rods 16 is parted from the surface of the disc 14 and the ring-shaped disc 15 by at least >=5mm.. Thus, since the flowing effect exists, even if Al is adhered to the surface of the record disc 1 by means of, e.g., sputtering, the horizontal part 16a of the connecting rods 16 is not substantially a shade, resulting that the reflecting film is adhered uniformly to the surface of the record disc 1. |
