Abstract: An entry sheet for drilling for a printed wiring board material, which comprises a water-soluble resin (A) and a water-insoluble lubricant (B) as essential components,

Abstract: A lubricant sheet for making a hole used for a printed circuit board, comprising an organic substance layer having a thickness of 0.02 to 3.0 mm and formed of a mixture (a) or a mixture (b) and a metal foil having a thickness of 0.05 to 0.

Abstract: Provided are a halogen-free and phosphorus-free prepreg having good flame retardancy and having excellent electric characteristics and heat resistance, and a laminated board. The prepreg is formed of a resin composition comprising, as essential components, a phenol compound (I) having a structural unit of the formula (1), wherein R1 is hydrogen or phenol, R2 is a hydrogen or methyl and n is an integer of 0 to 10, an epoxy resin (II) prepared by epoxidizing the same phenol compound as said phenol compound, a metal hydrate (III) and a molybdenum compound (IV), and a substrate which is impregnated with said resin composition or to which said resin composition is applied. The laminated board for an insulating material, which is formed of the prepreg.

Abstract: A mode selecting dial and an indicator are provided on a digital camera body. Plural symbols corresponding to each mode are printed on the mode selecting dial. When one of the plural symbols is set at the indicator, the digital camera is set to the mode corresponding to the symbol. The indicator has an oblong cover, and a green LED and a red LED, which were formed inside of the oblong cover. The green LED and the red LED emit light simultaneously or by choice according to the condition of the digital camera. The condition of the digital camera can be known by light emission of the indicator.

Abstract: The image of a subject obtained by photography is displayed on a display unit provided on a digital still camera. The user designates a zoom area and magnification on the displayed image of the subject. The illumination angle of a strobe light-emission unit is controlled in such a manner that a position on the subject that corresponds to the center of the designated zoom area is illuminated with strobe light. The zoom image thus obtained is brightened in emphasized fashion by the strobe light-emission unit.

Abstract: This invention concerns a method for water-cooling directly a vertical train of graphite electrodes connected to each other, by using a cooling water sprayed directly onto the outer periphery surface of at least one graphite electrode consisting of an upper portion of graphite electrode train, in which the cooling water is directed at the upward or downward inclination with respect to the horizontal level and said cooling liquid is sprayed simultaneously at a flow rate ranging between 0.8 liters/minute and 40 liters/minute.

Abstract: A crosslinkable resin composition comprising (A) a polyethylene resin composition containing 0.1 to 10% by weight of a crosslinking agent and (B) a thermosetting resin composition selected from the group consisting of cyanate ester resin compositions, polyester resin compositions and epoxy resin compositions; said crosslinkable resin composition comprising (1) 95 to 5% by weight of the resin composition (A) and 5 to 95% by weight of the resin composition (B) when the resin composition (B) is a cyanate ester resin composition, and (2) 95 to 20% by weight of the resin composition (A) and 5 to 80% by weight of the resin composition (B) when the resin composition (B) is a polyester resin composition or an epoxy resin composition; and a method for producing a laminate using said composition.

Abstract: A flame retardant isocyanurate resin is produced by polymerizing a polyfunctional isocyanate compound with a polyfunctional epoxy compound at a ratio of 0.05 - 0.2 equivalent of the polyfunctional epoxy compound per one equivalent of the polyfunctional isocyanate compound at a pressure of 1 - 800 kg/cm.sup.2 (gauge) at a temperature of 100.degree. - 250.degree. C in the presence of an organic isocyanate polymerization catalyst.