摘要:
A method of producing a toner having a process of mixing colored particles and outer-additives by using a mixer with an agitating blade whose shaft portion is sealed with a gas having a flow rate of from 0.4 m3/hr to 3 m3/hr and which rotates at such a high speed as a peripheral speed at a tip of said agitating blade in a range of from 20 m/sec to 50 m/sec. When the colored particles and outer-additives are mixed with each other, there is no generation of aggregates thereby and the toner can be obtained at a high yield. Therefore the toner which hardly generates a white streak and fog, even after a long period of continuous operation of development of electrophotographs is performed, can be obtained.
摘要:
A production process of a polymerized toner, in which a corrosion-resistant metal container, the surface roughness Ry of an inner wall of which is at most 3 μm, is used as a polymerization container, and when an aqueous liquid dispersion is heated in the polymerization container to conduct polymerization, the temperature of the aqueous liquid dispersion is raised up to a temperature 5° C. lower than a target polymerization temperature at a heating rate of 20 to 60° C./hr and raised up to the target polymerization temperature from the temperature 5° C. lower than the target polymerization temperature at a heating rate of 5 to 30° C./hr, and after the temperature of the aqueous liquid dispersion reaches the target polymerization temperature, the polymerization is conducted while controlling the temperature of the aqueous liquid dispersion so as to fall within a range of (the target polymerization temperature ±3° C.).
摘要:
A toner can be produced by dispersing a colorant in a dispersion medium essentially composed of a polymerizable monomer by using a media-type dispersing device at a tip speed of a stirring body of 3 to 20 m/s with a residence time being 0.03 to 0.5 hour to obtain a monomer composition A; dispersing or dissolving a charge control agent in a dispersion medium to obtain a monomer composition B; dispersing or dissolving a parting agent in a dispersion medium to obtain a monomer composition C; mixing or dispersing the monomer composition A, the monomer composition B and the monomer composition C in a dispersion medium to obtain a polymerizable composition D; and homogenizing the composition D in an aqueous dispersion medium containing a dispersion stabilizer to generate droplets; polymerizing the droplets to obtain colored polymer particles; and attaching an outer-additive on the colored polymer particles.
摘要:
An easy-open end which is excellent from the standpoint of sanitation and environmental friendliness yet satisfying both the close adhesion and the scratch resistance despite of using a bisphenol A-free primer. The easy-open end has a polyester film applied, via a primer, onto the inner surface of the end of an aluminum base sheet forming a surface-treating layer that contains a zirconium compound and/or a titanium compound and an organic compound, wherein the primer contains a polyester resin that contains not less than 30% by weight of a carboxyl group-introduced polyester resin, and a phenol resin at a weight ratio of 50:50 to 85:15.
摘要:
A bearing apparatus includes a stationary shaft, a first annular member, and a rotating member. The rotating member includes a first inner circumferential surface arranged opposite to the outer circumferential surface of the stationary shaft, and a second inner circumferential surface arranged opposite to an outer circumferential surface of the first annular member. A lubricating oil is arranged in a gap between a surface of a stationary member and the rotating member. On an upper side of an upper surface of the lubricating oil, the first annular member and the rotating member are arranged radially opposite to each other with a slight gap defined therebetween, so that a labyrinth seal is defined. The labyrinth seal and a fixing range over which the stationary shaft and the first annular member are fixed to each other are arranged to overlap with each other in a radial direction.
摘要:
A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array.
摘要:
A multi-core coaxial cable is composed of includes a plurality of coaxial cables, each of which having an insulator, an outer conductor, and a sheath successively disposed in a coaxial arrangement around a center conductor, and which are collectively covered by a cable sheath. At one end portion of the multi-core coaxial cable, the plurality of coaxial cables are exposed from the cable sheath and arranged in parallel rows. A connecting member is connected to one end of the multi-core coaxial cable, and the center conductors and outer conductors of the plurality of coaxial cables are respectively conductively connected to terminal portions of the connecting member. The covering member is positioned covering the periphery of the plurality of coaxial cables between the cable sheath and the connecting member.
摘要:
A planetary gear reducer (1) includes: a sun gear (5) having external teeth and fixed concentrically to a power input shaft (3); a plurality of planet gears (7) having external teeth and mashing with the sun gear (5); a ring gear (9) having internal teeth and meshing with the planet gears (7); a planet carrier (11) configured to support a plurality of planet shafts (13), each of which is a rotational axis of a corresponding one of the planet gears (7), and to output revolution of the plurality of planet gears (7) as first power; and a cylindrical support (27) connected to the ring gear (9) such that the cylindrical support (27) is non-rotatable relative to the ring gear (9), the cylindrical support (27) being configured to output rotation of the ring gear (9) as second power. The cylindrical support (27) includes, at its one part along the direction of a central axis, a flexible structure (41) which is curved radially inward and has a V-shaped longitudinal section. This configuration makes it possible to both obtain rigidity and prevent misalignment while suppressing an increase in the weight of the gear reducer.
摘要:
A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array.