Abstract: Provided is a liquid jet recording apparatus which maintains a function of adjusting pressure of liquid jetted from a jetting portion toward a recording medium and which still has a simple apparatus structure. In the liquid jet recording apparatus, a pressure sensor is provided in a tube between a liquid storing portion and a roller tube pump, the pressure of liquid which flows through the tube is measured, a pressure value is sent to a control portion, the pressure value is compared with lower limit values and upper limit values stored in a definition file stored in the control portion, a corresponding drive signal is sent to a drive portion, a roller tube pump is driven in a normal direction or in a reverse direction by a drive portion, and in this way, the pressure of the liquid in a jetting portion is adjusted.

Abstract: Provides a light polarizing sheet which is easy to manufacture, offers the functionality of conventional multiple sheet structures, and satisfies both the luminance and viewing angle characteristics required for liquid crystal televisions and the like. The light polarizing sheet of the present invention comprises a first polarizing lens sheet including a sheet-shaped substrate and a first lens portion formed on one face of the substrate; and a second polarizing lens sheet including a sheet-shaped substrate and a second lens portion formed on one face of the substrate, having a flat portion on its tip; wherein the flat portion of the second lens portion on the second polarizing lens sheet and the other face of the substrate of the first polarizing lens sheet are adhered using a transparent material.

Abstract: [Purpose] To provide a light regulating film and a laminated light regulating film with relatively large crazes or cracks, capable of controlling optical properties such as transmissivity and scattering to a high degree, as well as a method for producing a light regulating film and a method for producing a laminated light regulating film. [Constitution] Linear notch patterns at fixed intervals are formed by contacting blades 6a on a drum 6 with a film F and mechanically transferring the shape of the blades 6a to the film F. The notch pattern is formed to be approximately parallel to the axial direction of the drum 6. When a flexural stress is applied in the direction of the film F transport by passing the film over the bending roll 8 while applying a predetermined tension thereto, crazes or cracks are formed inside the notch patterns, with the notches in the notch patterns serving as starting points thereof.

Abstract: Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on the wall of reactors and around stirring blades is prevented. The method enables continuous and stable production of high-quality polyolefins, with no pipe line clogging. The method is characterized by a specific supply mode of feeding a catalyst activity retardant such as alcohol into polymerization reactors. Specifically, the retardant is fed into the vapor phase in a polymerization reactor and into the powder phase therein through its side wall. Preferably, the retardant is fed into the powder phase through a plurality of sites of the side wall of the reactor.

Abstract: Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on the wall of reactors and around stirring blades is prevented. The method enables continuous and stable production of high-quality polyolefins, with no pipe line clogging. The method is characterized by a specific supply mode of feeding a catalyst activity retardant such as alcohol into polymerization reactors. Specifically, the retardant is fed into the vapor phase in a polymerization reactor and into the powder phase therein through its side wall. Preferably, the retardant is fed into the powder phase through a plurality of sites of the side wall of the reactor.

Abstract: A cleaning roller system, which is preferable for use in a printer having a printing head, is disclosed. The cleaning roller system comprises an adhesive roller which is provided on a recording material feeding side relative to a print head, the adhesive roller has adhesive property, and is in contact with a surface of said recording material, and rotates in a direction of transporting said recording material.

Abstract: Disclosed are a polypropylene-based resin and a polypropylene-based resin composition having well-balanced, high-level flowability, stiffness and impact resistance. The polypropylene-based resin has an MI of from 30 to 70 g/10 min and a 25.degree. C. xylene-soluble content, x, of from 5 to 15% by weight, in which the 25.degree. C. xylene-soluble component is such that (a) its ethylene unit content, z, is from 20 to 30% by weight, and (b) its intrinsic viscosity, [72], indecalin at 135.degree. C. is not smaller than 2.00 dl/g, and in which the 25.degree. C. xylene-insoluble component is such that (c) its ethylene unit content, y (% by weight), satisfies the following:100y/[y.times.(1-x/100)+x].ltoreq.1.13z-16.6,(d) in GPC, the content of its constituent component having a molecular weight of not smaller than 10.sup.6 is not smaller than 2% by weight, (e) its MI is from 40 to 130 g/10 min, and (f) its stereospecificity index is not smaller than 98.5%.

Abstract: A solid product as a catalyst component for an olefin polymerization catalyst is obtained by the reaction of metallic magnesium, an alcohol, and a halogen in an amount ranging from 0.019 to 0.06 gram-atom per one mole of metallic magnesium. Alternatively, the halogen component is a halogen-containing compound which contains not less than 0.0001 gram-atom of a halogen atom per one gram-atom of metallic magnesium.

Abstract: Disclosed is a composition of polybutene-1 comprised of a polymer resulting from preliminarily polymerization of a small amount of an .alpha.-olefin, which has an intrinsic viscosity [.eta.]p of 7 dl/gram or lower, as measured at 135.degree. C. in a decalin solution; and a homopolymer of butene-1 or a copolymer of butene-1 and 20% by weight of an .alpha.-olefin other than butene-1, the composition of polybutene-1 having an intrinisic viscosity [.eta.]t of 0.5-7.0 dl/gram, when measured at 135.degree. C. in a decalin solution, and satisfying the following relationship with respect to the intrinsic viscosity [.eta.]p:[.eta.]p.ltoreq.2.5.times.[.eta.]r. The composition provides resulting films with highly improved appearance and with a lesser number of gel and fish eyes.

Abstract: Disclosed is a process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising:(A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound;(B) an organoaluminum compound; and(C) an organosilicon compound selected from a group consisting of an organosilicon compound (C-1) having the general formula:(R.sup.1 O)(R.sup.2 O).sub.3-n Si(OR.sup.3).sub.n (I)wherein R.sup.1 is a branched hydrocarbon residue; R.sup.2 and R.sup.3 may be the same as or different from each other, and are linear or branched hydrocarbon residues, respectively; and n is from 2 to 3;an organosilicon compound (C-2) having the general formula: ##STR1## wherein R.sup.4 is a hydrocarbon residue in which a carbon atom adjacent to Si is a tertiary carbon atom; and R.sup.5 is a linear or branched hydrocarbon residue; andan organosilicon compound (C-3) having the general formula:R.sup.6 R.sup.7 Si(OR.sup.8).sub.

Abstract: In a defect counting method and apparatus, a projection or a corner of a defect area is successively identified from a pixel and pixels close to the pixel, especially, from four pixel groups. The number of the defect areas is incremented when the projection is identified and decremented when the corner is identified.

Abstract: A plug for an optical fiber cable comprises a plug proper having a line-inserting portion for insertion of an optical fiber and a primary covering layer in a state communicating with the interior, an optical fiber-inserting portion for inserting only the optical fiber, a cylindrical portion formed on the outer wall of the line-inserting portion to caulk and fix the line, and a pressing portion having a concave-convex part formed to anchor the filamentary reinforcing fiber exposed from the end of the optical fiber cable onto the periphery of the pressing portion, and at least one ferrule for caulking the filamentary reinforcing fiber exposed from the end of the optical fiber cable to the concave-convex part of the pressing portion of the plug proper, and further, caulking the secondary covering layer.

Abstract: An optical coupler comprising N number (where N stands for an integer of not less than 2) of optical fibers having one ends integrated and the other ends branched and N number of optical coupler parts, wherein the top end of each light branching-coupling optical fiber has a plane of 360.degree./N including an inclined branching fiber-abutting plane inclined at an angle .theta. to the optical fiber axis and a light-coupling plane vertical to the abutting plane, each of the optical coupler parts is constructed by inserting the light branching-coupling optical fiber in an optical fiber-retaining hole of a block having the same plane as the branching fiber-abutting plane of the optical fiber and a light-coupling plane vertical to the abutting plane, and the branching fiber-abutting planes of the optical coupler parts are engaged with each other to construct a optical coupler.

Abstract: A mode scrambler capable of converting the mode distribution of light transmitted through an optical fiber into a stationary mode distribution. The mode scrambler comprises a plurality of cylinders arranged in a predetermined arrangement, and a step index optical fiber of 100 .mu.m or above in core diameter and 0.4 or above in numerical aperture wound around and across the plurality of cylinders. The step index optical fiber is wound at least in one 8-shaped wind at least across the two cylinders of the plurality of cylinders. At least the diameter of one of two cylinders across which the step index optical fiber is wound in an 8-shape is not less than ten times and not more than fifty times the core diameter of the step index optical fiber, and the diameter of the other cylinder is not less than that of the former cylinder.

Abstract: An optical coupler comprising N number (where N stands for an integer of not less than 2) of optical fibers having one ends integrated and the other ends branched and N number of optical coupler parts, wherein the top end of each light branching-coupling optical fiber has a plane of 360.degree./N including an inclined branching fiber-abutting plane inclined at an angle .theta. to the optical fiber axis and a light-coupling plane vertical to the abutting plane, each of the optical coupler parts is constructed by inserting the light branching-coupling optical fiber in an optical fiber-retaining hole of a block having the same plane as the branching fiber-abutting plane of the optical fiber and a light-coupling plane vertical to the abutting plane, and the branching fiber-abutting planes of the optical coupler parts are engaged with each other to construct a optical coupler.