Apparatus for producing substrate sheet for optical recording mediums and process for producing substrate sheet for optical recording mediums making use of it, apparatus for producing optical recording medium and process for producing optical recording medium making use of it.

摘要

The present invention relates to an apparatus for producing a substrate sheet for optical recording medium and a process for producing a substrate sheet by the use of the apparatus. The apparatus comprises a means (10, 11, 12) for forming an photo-curable resin layer (9') on at least one of a substrate sheet (1) and a roll stamper (3) having thereon a pattern corresponding with preformatting information; a means (8, 14) for bringing the substrate sheet into close contact with the roll stamper, interposing the photo-curable resin layer between them; and a means (13) for curing said photo-curable resin layer; the roll stamper being so formed as to undergo elastic deformation. The present invention also relates to an apparatus for producing an optical recording medium and a process for producing an optical recording medium by the use of the apparatus. The apparatus comprises continuously; a means for melting a resin and extruding the molten resin to form a resin sheet; a means for forming a photo-curable resin layer on at least one of a substrate sheet and a roll stamper having thereon a pattern corresponding with preformatting information; a means for bringing the substrate sheet into close contact with the roll stamper, interposing the photo-curable resin layer between them; a means for curing said photo-curable resin layer; a means for peeling from the roll stamper the substrate sheet on which a photo-cured resin layer has been fixed; a means for forming a recording layer on the surface of the substrate sheet on which the pattern has been formed; a means for forming a protective member on the surface on which the recording layer has been formed; and a means for individually cutting the substrate sheet having said recording layer and protective member; the roll stamper being so formed as to undergo elastic deformation.