mm, 86 mm, 120-130 mm, 200 mm and 300 mm, respectively.The adhesive layer 4 can be formed by adhesive which is usually used for bonding in optical disks, for example, thermosetting resin adhesive including acrylic resin, epoxy resin, silicone resin, etc.FIG. 4 shows an optical information recording medium K2 according to a second embodiment of the present invention.