| 摘要 |
PURPOSE:To prevent the generation of noise in a signal in the stage of reproduction by providing an adhesive agent layer to the part between a base plate surface corresponding to the part except the recording region of the substrate of a recording medium and a UV curing resin layer. CONSTITUTION:The base plate 1 for the substrate of the information recording medium is engaged at the through-hole 8 thereof with an engaging projection 6 for controlling the position in a master disk for reproduction and is imposed on the UV curing resin Ba in such a manner that the surface of the plate 1 parallels with the surface of the master disk. The plate 1 is then formed with a UV resin layer 2 to a prescribed thickness between the surface of the master disk and the one surface C1 of the plate 1. The excess resin Ba is projected from the entire circumference of the plate 1 to the outside when pressing force is exerted to the other surface C2 of the plate 1 by a pressure plate D. UV rays are radiated from a UV radiation source to cure the resin 2 and a thin recording medium film 3 consisting of a magnetic recording medium material is stuck and formed by a sputtering method, etc. on the surface thereof. |
