Abstract: This invention is related to an optical data recording medium of a high reliability and a large capacity, preventing moisture absorption and swelling of a resin layer formed on one side of a transparent substrate, and related to a method for manufacturing thereof wherever the optical data recording medium comprises at least a transparent substrate, a transferred layer of a preformat pattern formed on the transparent substrate and a thin film layer formed on the transferred layer wherein at least the surface of the transferred layer in contact with the transparent substrate is made of a resin layer composed of an ultraviolet ray curable resin resulting in an optical data recording medium having a reduced absorbing moisture of the transferred layer thereof and wherever the ratio of swelling (.DELTA.d/d) is restricted to 0.1% or less.

Abstract: Disclosed herein is an information recording medium which is composed of a substrate, underlayer, and recording film and is capable of recording information by means of depressions or pits which are formed on the recording film upon irradiation with a recording energy beam, said information recording medium being characterized in that the recording film is provided with a supporting layer on at least one side of the recording film, said supporting layer having a melting point which is lower than that of the recording film, or on that side of the recording film which is adjacent to the substrate, said supporting layer having a melting point which is higher than that of the recording film. Owing to these features, the information recording medium gives recording pits having a smaller rim inner diameter, so that it achieves a high recording power margin for high-density recording.

Abstract: This invention is related to an optical data recording medium of a high reliability and a large capacity, preventing moisture absorption and swelling of a resin layer formed on one side of a transparent substrate, and related to a method for manufacturing thereof whatever the optical data recording medium comprises at least a transparent substrate, a transferred layer of a preformat pattern formed on the transparent substrate and a thin film layer formed on the transferred layer wherein at least the surface of the transferred layer in contact with the transparent substrate is made of a resin layer composed of an ultraviolet ray curable resin resulting in an optical data recording medium having a reduced absorbing moisture of the transferred layer thereof and whatever the ratio of swelling (.DELTA.d/d) is restricted to 0.1% or less.

Abstract: Disclosed is an optical recording medium comprising a transparent substrate, a transferred layer of preformat pattern formed on one side of the transparent substrate, and a recording layer laminated on the preformat patterns formed on the surface of the transferred layer, wherein the transferred layer is composed of a three-layer structure with a first layer composed of a first organic compound layer composed of a first organic compound simple substance, a mixed layer composed of a mixture of the first and a second organic compound, and a second organic compound layer composed of a second organic compound simple substance, layered in the above order from the transparent substrate and a method for manufacturing the optical recording medium.

Abstract: Disclosed are optical recording media having interposed an organic compound between a metal stamper and a transparent substrate and forming a replica onto which a signal surface formed on the metal stamper is transferrable to the transparent substrate.