Abstract: Disclosed is a symbol reading device including: an imaging section to capture a symbol and generate an image; a detecting section to detect a size of the symbol; a judging section to judge large or small by comparing the size of the symbol to a pre-set value; a focus movement controlling section to move a focus position of the imaging section to a predetermined position of a farther side when the size of the symbol is smaller than the pre-set value as a result of the judgment, and to move a focus position of the imaging section to a predetermined position of a closer side when the size of the symbol is larger than the pre-set value as a result of the judgment; and an analyzing section to analyze symbol data corresponding to the symbol at a focus position moved by the focus movement controlling section.

Abstract: The brittle workpiece splitting system 1 includes a substrate holding mechanism 10 for holding a substrate 51, and a processing unit 5 for splitting the substrate 51 held by the substrate holding mechanism 10 by a splitting process. The substrate holding mechanism 10 has an edge damper 12 adapted to clamp an edge part of the substrate 51 from the sides of the opposite surfaces of the edge part, and support members 19 for supporting the substrate 51 thereon at a predetermined height. The support members 19 are disposed on the side opposite the side of the edge damper 12 with respect to the intended split line 61 parallel to the edge part of the substrate 51. The edge damper 12 has an edge holder 15 on which the substrate 51 is seated, and a pressure bar 14 for pressing the substrate 51 against the edge holder 15 to hold the substrate 51 between the edge holder 15 and the pressure bar 14.

Abstract: A fuel cell includes electromotive portions, a first sheet, a second sheet, a replenishing portion and a fuel adjusting film. The electromotive portions cause fuel and oxygen to react chemically with each other to produce electrical energy. The first sheet is provided to supply the fuel to the electromotive portions. The second sheet is provided to supply the oxygen to the electromotive portions. The replenishing portion is provided at a predetermined portion of the first sheet to replenish the first sheet with the fuel. The fuel adjusting film is inserted in the first sheet to adjust the amounts of the fuel to be supplied from the first sheet to the electromotive portions.

Abstract: A plastic blind rivet includes a sleeve with a plurality of legs formed by a plurality of slits of constant width. A body lock is formed on the inside of the rivet sleeve, and a mandrel lock is formed in the shank of the mandrel. When the rivet is set, the body lock and mandrel lock are engaged so as to maintain the legs in an expanded condition. A stopper is formed in the mandrel shank and abutments formed in the sleeve body. During rivet setting, the stopper and abutments engage to limit further deformation of the sleeve legs.

Abstract: Disclosed is a symbol reading device including: an imaging section to capture a symbol and generate an image; a detecting section to detect a size of the symbol; a judging section to judge large or small by comparing the size of the symbol to a pre-set value; a focus movement controlling section to move a focus position of the imaging section to a predetermined position of a farther side when the size of the symbol is smaller than the pre-set value as a result of the judgment, and to move a focus position of the imaging section to a predetermined position of a closer side when the size of the symbol is larger than the pre-set value as a result of the judgment; and an analyzing section to analyze symbol data corresponding to the symbol at a focus position moved by the focus movement controlling section.

Abstract: A conductive paste containing a conductive powder (A), a vinyl chloride-vinyl acetate resin (B), a polyester resin and/or polyurethane resin (C), a blocked isocyanate (D) blocked with an active methylene compound, and an organic solvent (E), wherein the resin (C) has a glass transition temperature of ?50° C. to 20° C., a sum of amounts of the resin (C) is 50 to 400 parts by weight relative to 100 parts by weight of the resin (B), and a sum of amounts of the resin (B), the resin (C) component, and the blocked isocyanate (D) is 10 to 60 parts by weight relative to 100 parts by weight of the conductive powder (A). An electric wiring in which this conductive paste is formed on an insulating substrate.

Abstract: A fuel cell includes electromotive portions, a first sheet, a second sheet, a replenishing portion and a fuel adjusting film. The electromotive portions cause fuel and oxygen to react chemically with each other to produce electrical energy. The first sheet is provided to supply the fuel to the electromotive portions. The second sheet is provided to supply the oxygen to the electromotive portions. The replenishing portion is provided at a predetermined portion of the first sheet to replenish the first sheet with the fuel. The fuel adjusting film is inserted in the first sheet to adjust the amounts of the fuel to be supplied from the first sheet to the electromotive portions.

Abstract: The brittle workpiece splitting system 1 includes a substrate holding mechanism 10 for holding a substrate 51, and a processing unit 5 for splitting the substrate 51 held by the substrate holding mechanism 10 by a splitting process. The substrate holding mechanism 10 has an edge damper 12 adapted to clamp an edge part of the substrate 51 from the sides of the opposite surfaces of the edge part, and support members 19 for supporting the substrate 51 thereon at a predetermined height. The support members 19 are disposed on the side opposite the side of the edge damper 12 with respect to the intended split line 61 parallel to the edge part of the substrate 51. The edge damper 12 has an edge holder 15 on which the substrate 51 is seated, and a pressure bar 14 for pressing the substrate 51 against the edge holder 15 to hold the substrate 51 between the edge holder 15 and the pressure bar 14.

Abstract: Provided are a novel polypropylene resin composition, a gas permeable film comprising the same and provided with satisfactory optical characteristics (transparency, gloss and see throughness) as well as an excellent gas permeability (water vapor, oxygen and ethylene gas) without damaging a rigidity and a vegetable and fruit freshness long term-maintaining method using the above gas permeable film for a wrapping film. The polypropylene resin composition described above comprises 40 to 95% by weight of a propylene polymer (A) and 5 to 60% by weight of an ethylene/propylene/butene random copolymer (B) having a butene content of 3 to 40% by weight and an ethylene content of 10 to 30% by weight, wherein a ratio (&eegr;B/&eegr;A) of an intrinsic viscosity &eegr;B of the component (B) described above to an intrinsic viscosity &eegr;A of the component (A) described above falls in a range of 0.5 to 1.3; and the &eegr;B described above falls in a range of 0.5 to 3.0 dl/g.

Abstract: Provided are a novel polypropylene resin composition, a gas permeable film comprising the same and provided with satisfactory optical characteristics (transparency, gloss and see throughness) as well as an excellent gas permeability (water vapor, oxygen and ethylene gas) without damaging a rigidity and a vegetable and fruit freshness long term-maintaining method using the above gas permeable film for a wrapping film.

Abstract: Propylene homopolymers or propylene-olefin copolymers, having at least one olefin selected from ethylene and &agr;-olefins having 4 or more carbon atoms where the propylene content in this copolymer is 98% by weight or more, are provided that are suitable for producing films with excellent antistatic performance, high rigidity and metallizability.

Abstract: A breathing film comprising at least one layer obtained by processing a propylene resin composition including crystalline propylene polymer(A) and propylene/&agr;-olefin random copolymer(B) is provided, said film having anti-bacterial agent, and the ratio [&eegr;]B/[&eegr;]A of intrinsic viscosity [&eegr;]B of propylene/&agr;-olefin random copolymer(B) and intrinsic viscosity [&eegr;]A of crystalline propylene polymer(A) being 0.3 to 1.2, and said film having specified range of water vapor permeability, oxygen gas permeability and ethylene gas permeability.

Abstract: A propylene/ethylene/&agr;-olefin terpolymer characterized in that i) there is from 0.01 mol % to less than 15 mol % of a comonomer unit with a molar ratio of ethylene units/C4-C20 &agr;-olefin units being in the range of from 6.5×10−4 to 0.99, and from more than 85 mol % to not more than 99.99 mol % of a propylene unit with 2,1- and 1,3-propylene units being in the range of from 0 to 1 mol %, in a polymer chain determined by 13C-NMR spectroscopy; ii) a weight average molecular weight (Mw) determined by GPC is in the range of from 40,000 to 1,000,000; and iii) the amount of the component eluted in o-dichlorobenzene at a temperature of not higher than 40° C. is not more than 10 % by weight based on the total weight of the terpolymer and the amount of the component eluted in o-dichlorobenzene within the ±10° C. range of an elution peak temperature is not less than 75 % by weight based on the weight of the component eluted at a temperature of higher than 0° C.

Abstract: An object of the present invention is to provide a drawn polypropylene film as a wrapping material that has transparency and mechanical properties sufficient as a wrapping material yet having the needed gas permeability for maintaining the freshness of the enclosed goods and additionally enables control of permeability of gases to a certain proportion if needed even if secondary steps such as perforation processing, etc., are eliminated.

Abstract: An unoriented polypropylene-based film or sheet possessing excellent impact resistance at low temperature, transparency, heat resistance at low temperature and excellent tear strength and/or stress whitening resistance. A molding material which comprises a polypropylene-based resin material comprising 40 to 80% by weight of crystalline polypropylene and 60 to 20% by weight of propylene-&agr;-olefin copolymer containing 20 to 80% by weight of propylene polymerization units, the propylene-&agr;-olefin copolymer dispersed as particles in the crystalline polypropylene, is unoriently molded to afford a film-shaped or sheet-shaped molding, wherein the particle diameter have an aspect ratio (L/D) of mean dispersed particle length (L) to mean dispersed particle diameter along the thickness of the molding (D) of 30 or more in a cross section of the molding along the MD direction, and the mean dispersed particle diameter of 0.3 &mgr;m or less.

Abstract: A current collecting means in an aerial cableway system collecting electric power for driving a self-propelled aerial carriage, is capable of maximization of the lifetime of a current collecting shoe. The current collecting means comprises a current-carrying cable having at least a planar surface on the outer surrounding thereof and a current collecting shoe having a planar contacting surface to be urged onto the planar surface of the cable. The contact between the shoe and cable is carried out in both planar surfaces to prevent uneven wear of the shoe.