Abstract: A power supply apparatus generates an output voltage. A boost circuit boosts a voltage supplied from a reference voltage source and generates a first power supply voltage. A processor controls switching the boost circuit on and off. A first transistor is connected to the first power supply voltage. A second transistor is connected to a collector of the first transistor. A resistance element is connected to a collector of the second transistor. A voltage source is connected to the resistance element and generates a second power supply voltage. A collector voltage, which is an output voltage, of the second transistor is controlled by controlling an amount of base current of the first transistor.

Abstract: An object of the present invention is to provide an organosol for forming a coating that can remain hydrophilic for a long time even in a situation with no exposure to light, and a manufacturing method thereof. As a means for solving this problem, the organosol is created by dispersing magnesium fluoride compound obtained by reacting at least a magnesium compound (the main raw material) with a solution containing hydrogen fluoride, in an organic solvent. The organosol is characterized by containing fine particles of the magnesium fluoride compound which particles have an average particle diameter of from 5 to 500 nm.

Abstract: An illumination device having a reflecting plate, at least one linear light source arranged on a first side of the reflecting plate, a diffusing plate arranged on a second side of the reflecting plate, and a light quantity adjusting member formed integrally with the reflecting plate.

Abstract: An illumination device comprising a reflecting plate, a single or a plural number of linear light source(s) arranged over said reflecting plate and a diffusing plate arranged over said light source(s), a light quantity adjusting means being arranged on the surface of the linear light source on between said light source(s) and said diffusing plate, and said illumination device being so adapted as to uniformalize luminance distribution on the diffusing plate by selecting shape and size of light-transmitting portions of the light quantity adjusting means.

Abstract: A guide post for magnetic tapes manufactured by injection molding of a composite material prepared by mixing a thermoplastic resin used as a basic ingredient with an electrically conductive carbon black and a spherical silicon resin. This guide post can exhibit characteristics equivalent to those of the metal guide post owing to the function of the electrically conductive carbon black and the spherical silicon resin. The composite material can further contain a solid lubricant mixed therewith.

Abstract: This invention relates to a curable resin composition suitable for use in the applications of casting material, coating material, putty, adhesives, various types of linings and FRP, said curable resin composition being characterized in that an unsaturated acrylic urethane prepared by addition reaction of a hydroxyl-terminated polymer, a polyisocyanate and a monohydroxylalkyl monoacrylate or a monohydroxylalkyl monomethacrylate, substantially free from an isocyanate group and having a weight-average extension of molecular chain of 100 A or more is added to at least one of an unsaturated polyester resin and an epoxy acrylate resin in an amount effective for the development of toughness, thus the toughness of the conventional unsaturated polyester or epoxyacrylate ester being improved by admixing said unsaturated acrylic urethane therewith.

Abstract: This invention relates to a method for stabilizing unsaturated cycloacetal resin produced by reacting (I) cycloacetal compound prepared by the condensation of polyhydric alcohol more than tri-hydric and unsaturated aldehyde, with (II) unsaturated alcohol having a radical-polymerizable unsaturated bond and an alcoholic hydroxyl group in the same molecule, and optionally further with one or more compounds selected from the group consisting of polyhydric alcohol, hydroxy polyether and hydroxy polyester, in the presence of acid catalyst, characterized by adding one or more compounds selected from the group consisting of ammonia, primary amine, secondary amine, tertiary amine, quaternary ammonium salt, hydrazine and its derivatives in an amount of 0.

Abstract: This invention relates to a curable resinous composition prepared by reacting 1 mol of (a) an unsaturated polycycloacetal, 0.1 to 3 mols of (b) an ester of polyhydric alcohol/unsaturated monocarboxylic acid, having an alcoholic hydroxyl group and a polymerizable unsaturated bond selected from the group of acryl and methacryl groups in the same molecule, and 0.1 to 2.9 mols (per hydroxyl group in component b) of (c) a polyhydroxy compound.

Abstract: This invention relates to a curable resinous composition which comprises a combination of (I) a curable resinous compound prepared by reacting 1 mol of (a) an unsaturated polycycloacetal, 0.1 to 3 mols of (b) an ester of a polyhydric alcohol/unsaturated monocarboxylic acid, having an alcoholic hydroxyl group and a polymerizable unsaturated bond in the same molecule, and 0 to 2.9 mols of (c) a polyhydroxy compound such as polyols, polyethers and polyesters, with (II) an unsaturated polyester.