Abstract: There is disclosed an optical recording medium provided with an optical recording layer on a substrate, in which a layer of nitride of a substance selected from tungsten, zirconium, titanium, niobium, vanadium, tantalum and chromium is formed on a side or both sides of the optical recording layer.

Abstract: In an optical recording medium having an optical recording layer provided on a substrate, a carbide film of a substance selected from among tungsten, boron, molybdenum, hafnium, niobium, titanium, chromium, vanadium, tantalum and silicon is formed on one or each side of the recording layer.

Abstract: A magnetic recording medium comprising a substrate, a magnetic recording layer made of an amorphous magnetic film on the substrate, and an anticorrosive layer prepared by oxidation treatment of the surface of the amorphous magnetic film.

Abstract: An optical recording medium comprises a plurality of layers including an optical recording layer laminated on the substrate, said substrate having a region on and around the edge portion thereof where no optical recording layer is formed, and said region being sealed by any of said layers other than said optical recording layer.

Abstract: A method for bonding of a color separation filter comprises placing a color separation filter through an intermediary UV-ray curable type bonding agent on a solid state image pick-up device, effecting registration between the solid state image pick-up device and the color separation filter, then applying irradiation of UV-ray at a luminous intensity of 30 mW/cm.sup.2 or higher from the side of the color separation filter thereby to subject said bonding agent to partial curing, and thereafter applying UV-ray irradiation at a luminous intensity of 5 mW/cm.sup.2 or lower from the side of the color separation filter thereby to subject said bonding agent to full curing.

Abstract: A recording medium comprising a substrate, a recording layer formed thereupon, and an anticorrosive layer which covers the recording layer and contains a chemical to prevent the corrosion of the recording layer.

Abstract: A full solid type electrochromic element of an improved construction, having a sequential lamination of a substrate, a first electrode, a first electrochromic layer as a color forming layer at the cathode side, an insulation layer made of a dielectric film, a second electrochromic layer as a color forming layer at the anode side, and a second electrode, wherein the second electrochromic layer is made of cobalt hydroxide (Co(OH).sub.2).

Abstract: A recording medium is provided which comprises (a) a first recording layer; (b) a second recording layer provided in contiguity to the first recording layer; and (c) a separation layer for spatially separating the first and second recording layer. The first recording layer has a sufficient film thickness not to permit the recording to be effected on the second recording layer, while the recording operation is performed on the first recording layer, and the recording operation is effected on the second recording layer at positions corresponding to defective portions in the first recording layer.