With respect to a typical example of the synthetic resin, there is provided various kinds of thermoplastic resins and thermosetting resins such as polycarbonate, polymethyle methacrylate, polystyrene, copolymer of polycarbonate and polystyrene, polyvinyl chloride, alicyclic polyolefin and polymethyle pentene, and various kinds of energy ray curable resins such as UV ray curable resins, visible rad