Abstract: A method for producing a particulate alumina composition includes the steps of preparing a wet particulate in a gas-liquid-solid three-phase system containing air by adding water and/or one or more compounds selected from an inorganic compound and an oxygen-containing organic compound to one or more alumina sources selected from an alumina hydrate and an alumina being rehydratable in the temperature range of 70 to 250° C., and to carry out a hydrothermal reaction in a temperature range of 70° C. to 250° C. Filtration and washing are carried out after the particulate alumina composition is preliminarily brought into contact with an alkaline component when an acid component is removed from the particulate alumina composition. The particulate alumina composition obtained by the method has a specific surface area in a dried product at 200° C. in the range of 40 to 300 m2/g and contains crystalline boehmite having an aspect ratio of 10 or less.

Abstract: The present invention prevents cracking of a brake shoe even when the sliding surface of the brake shoe is heated to a high temperature and provides high reliability. The present invention provides a brake shoe for elevator emergency stop which generates a braking force by pressing brake shoes against a guide rail and making the brake shoes 5 slide to stop an elevator cage in the event of anomalies, including the brake shoes made of a cast iron material having a plurality of grooves 3 formed in a direction substantially perpendicular to the guide rail and gear teeth which constitute a sliding surface with the brake shoes 5 formed as gaps between the grooves, wherein the depth of the grooves is 3 mm or more and not more than 1.7 times the width of the gear teeth.

Abstract: An image forming apparatus includes a fixing device having a pressure roller. The surface of the pressure roller is coated with a PFA resin and has an average surface roughness Ra of 0.05 to 0.13 ?m. A thermister is provided to detect the surface temperature of the pressure roller. The thermister includes a metal plate, a resister element attached to the metal plate, and a pair of fluorocarbon-resin films sandwiching the metal plate and the resister element. The fluorocarbon-resin film has a thickness of 15 ?m to 80 ?m.

Abstract: An image forming apparatus includes a fixing device having a pressure roller. The surface of the pressure roller is coated with a PFA resin and has an average surface roughness Ra of 0.05 to 0.13 ?m. A thermister is provided to detect the surface temperature of the pressure roller. The thermister includes a metal plate, a resister element attached to the metal plate, and a pair of fluorocarbon-resin films sandwiching the metal plate and the resister element. The fluorocarbon-resin film has a thickness of 15 ?m to 80 ?m.

Abstract: Disclosed is a process for preparing an alumina composition having high specific surface area and large pore volume, comprising preparing a reaction mixture having a given molar ratio between a monobasic acid and water by the use of an aluminum source such as acid-containing alumina obtained by heat treatment of aluminum hydroxide in the presence of an acid, bayerite, ?-alumina and ?-alumina, optionally adding an oxygen-containing organic compound or an inorganic polybasic acid as a pore structure controlling agent, performing sol-forming reaction, and then subjecting the product obtained by the sol-forming reaction to an appropriate operation such as alkali addition or heat dehydration treatment.

Abstract: When a large number of paper sheets and the like, tending to be folded or curled, are introduced into an introducing space, folded portions of the paper sheets and the like or edges of the curled paper sheets and the like project into an introducing port, so that the paper sheets and the like interfere with each other, thereby causing troubles such as the folding of the edge portions of the paper sheets and the like and the residence of the paper sheets and the like. Therefore, a gripping device is provided in the vicinity of a paper sheets and the like introducing port of a paper sheets and the like introducing mechanism, and this gripping device includes a plurality of brush portions which grip the paper sheets and the like to be introduced into a receiving cassette, and feeds the paper sheets and the like to a paper sheets and the like introducing portion, and the brush portions grip the paper sheets and the like in an upstanding posture in the paper sheets and the like introducing portion.

Abstract: In order to eliminate charge on an outplane deformed paper money, a paper money handling device includes a paper money storing box for storing a conveyed paper money in the paper handling device, which has a storing mechanism for storing the paper money inside, and a storing guide provided on the storing mechanism has at least a flat part and a concavo-convex part, and a concave portion thereof includes a static eliminating part.

Abstract: Disclosed is a process for preparing an alumina composition having high specific surface area and large pore volume, comprising preparing a reaction mixture having a given molar ratio between a monobasic acid and water by the use of an aluminum source such as acid-containing alumina obtained by heat treatment of aluminum hydroxide in the presence of an acid, bayerite, &rgr;-alumina and &ggr;-alumina, optionally adding an oxygen-containing organic compound or an inorganic polybasic acid as a pore structure controlling agent, performing sol-forming reaction, and then subjecting the product obtained by the sol-forming reaction to an appropriate operation such as alkali addition or heat dehydration treatment.

Abstract: When a large number of paper sheets and the like, tending to be folded or curled, are introduced into an introducing space, folded portions of the paper sheets and the like or edges of the curled paper sheets and the like project into an introducing port, so that the paper sheets and the like interfere with each other, thereby causing troubles such as the folding of the edge portions of the paper sheets and the like and the residence of the paper sheets and the like. Therefore, a gripping device is provided in the vicinity of a paper sheets and the like introducing port of a paper sheets and the like introducing mechanism, and this gripping device includes a plurality of brush portions which grip the paper sheets and the like to be introduced into a receiving cassette, and feeds the paper sheets and the like to a paper sheets and the like introducing portion, and the brush portions grip the paper sheets and the like in an upstanding posture in the paper sheets and the like introducing portion.

Abstract: In order to eliminate charge on an outplane deformed paper money, a paper money handling device includes a paper money storing box for storing a conveyed paper money in the paper handling device, which has a storing mechanism for storing the paper money inside, and a storing guide provided on the storing mechanism has at least a flat part and a concavo-convex part, and a concave portion thereof includes a static eliminating part.

Abstract: An alumina sol, containing a small amount of water of crystallization inside the crystal lattice of boehmite, having high mechanical strength, properties suitable for use as an alumina adsorbent or carrier, and the ability to be formed without additional concentration. The alumina sol comprises a fibrous boehmite having the molecular formula Al2O3.1.05-1.30 H2O with the weight average diameter and the weight average length being respectively in the range of 3 to 50 nm and in the range of 30 to 3000 nm, and has an alumina concentration of 15 to 60% by weight.

Abstract: A titanium oxide sol comprising a disperse medium and generally rectangular, non-spherical particles of titanium oxide dispersed in the disperse medium, with narrow scatteres in particle size and configuration. The sol is excellent in dispersibility, long-term stability and light-resistance and, is stable in a wide pH range without causing agglomeration. Moreover, it is excellent in absorbance of ultraviolet ray and in transmittance of visible light. The sol may be prepared by a process wherein hydrogen peroxide is added to a gel or sol of hydrated titanium oxide to dissolve the hydrated titanium oxide in said gel or sol, and the resulting aqueous titanic acid solution is heated in the presence of at least one compound selected from inorganic compounds of metals belonging the Group II, III, IV, V, VI and VIII of the periodic table.

Abstract: A process for the manufacture of a modified aluminosilicate zeolite is disclosed which includes contacting a starting zeolite in an aqueous phase with a dealuminating agent at a pH value of lower than 4 in the presence of a soluble silica. A novel zeolite composition is also disclosed which has increased acid and thermal stability.

Abstract: In accordance with the present invention, there are provided coating liquids for forming conductive coatings, which comprise (i) a zirconium oxysalt, (ii) a conductive substance and, if necessary, (iii) at least one member selected from non-sedimentary silica dispersion and silicon alkoxide or its derivative. The coating liquids, when coated on substrates, form thereon transparent conductive coatings which are excellent in transparency, scratch resistance, permanence properties and adhesion to the substrates and, moreover, excellent in antistatic effect. In particular, when the coating liquids for forming conductive coatings mentioned above are coated by the spray method on appropriate substrates followed by drying and/or heating, there are obtained face-plates for display devices, which have excellent regular reflection reducing effect (non-glare) and antistatic effect.

Abstract: In accordance with the present invention, there are provided coating liquids for forming conductive coatings, which comprise (i) a zirconium oxysalt, (ii) a conductive substance and, if necessary, (iii) at least one member selected from non-sedimentary silica dispersion and silicon alkoxide or its derivative. The coating liquids, when coated on substrates, form thereon transparent conductive coatings which are excellent in transparency, scratch resistance, permanence properties and adhesion to the substrates and, moreover, excellent in antistatic effect. In particular, when the coating liquids for forming conductive coatings mentioned above are coated by the spray method on appropriate substrates followed by drying and/or heating, there are obtained face plates for display devices, which have excellent regular reflection reducing effect (non-glare) and antistatic effect.

Abstract: In accordance with the present invention, there are provided coating liquids for forming conductive coatings, which comprise (i) a zirconium oxysalt, (ii) a conductive substance and, if necessary, (iii) at least one member selected from non-sedimentary silica dispersion and silicon alkoxide or its derivative. The coating liquids, when coated on substrate, form thereon transparent conductive coatings which are excellent in transparency, scratch resistance, permanence properties and adhesion to the substrates and, moreover, excellent in antistatic effect. In particular, when the coating liquids for forming conductive coatings mentioned above are coated by the spray method on appropriate substrates followed by drying and/or heating, there are obtained face-plates for display devices, which have excellent regular reflection reducing effect (non-glare) and antistatic effect.

Abstract: Transparent conductive coatings excellent in transparency are provided on substrates such as glass, plastics, etc. by the use of conductive coating materials obtained by maintaining aqueous solutions of hydrolyzable tin containing or indium containing compounds at pH of 8-12, and gradually hydrolyzing said compounds in the solutions to form sols containing colloidal particles, followed by drying and calcining.

Abstract: In accordance with the present invention, there are provided coating liquids for forming conductive coatings, which comprise (i) a zirconium oxysalt, (ii) a conductive substance and, if necessary, (iii) at least one member selected from non-sedimentary silica dispersion and silicon alkoxide or its derivative. The coating liquids, when coated on substrates, form thereon transparent conductive coatings which are excellent in transparency, scratch resistance, permanence properties and adhesion to the substrates and, moreover, excellent in antistatic effect. In particular, when the coating liquids for forming conductive coatings mentioned above are coated by the spray method on appropriate substrates followed by drying and/or heating, there are obtained face-plates for display devices, which have excellent regular reflection reducing effect (non-glare) and antistatic effect.

Abstract: Disclosed are transparent conductive ceramiccoated substrates having a surface resistance of 10.sup.3 -10.sup.11 .OMEGA./.quadrature., a total light transmission of at least 85% and a haze of less than 10%, said coated substrates being prepared by coating on the substrate a water organic solvent mixture type coating liquid containing dialkoxy-bisacetylacetonato zirconium, a partial hydrolysate of silicon alkoxide and a conductive substance, processes for preparing said coated substrates, and display and copy machine using said coated substrates.

Abstract: In a process for preparing spherical particles of hydroxide having a particle diameter of from 0.1 to 10 .mu.m by adding a corresponding metal alkoxide to a dispersion of water-alcohol system having dispersed therein a metal oxide or hydroxide as a seed, under alkaline conditions and allowing a decomposition product from said metal alkoxide to attach onto said seed to effect particle growth of the seed, the improvement which comprises maintaining said dispersion at a substantially constant pH within the range between 10 and 13 during the addition of the metal alkoxide to said dispersion and the subsequent particle growth of the seed, thereby to prepare mono-dispersed particles substantially free from particle aggregation having a sharp particle size distribution of a standard deviation of not greater than 0.5. The white particles so prepared may be, after separation, heat treated to provide black particles. The white or black particles may be coated with a synthetic resin in the surface.