Abstract: A two-component developer 100 includes a carrier 200 and a toner 300. The carrier 200 satisfies the relationships 100???220 and 300???480 when a voltage is applied in 1 V steps by a bridge resistance measurement method, where ? (V) is a carrier voltage value obtained when a current value flowing through the carrier 200 reaches 1.0?7 (A), and ? (V) is a carrier voltage value obtained when the current value reaches 1.0?5 (A).

Abstract: A two-component developer 100 includes a carrier 200 and a toner 300. The carrier 200 satisfies the relationships 100???220 and 300???480 when a voltage is applied in 1 V steps by a bridge resistance measurement method, where ? (V) is a carrier voltage value obtained when a current value flowing through the carrier 200 reaches 1.0?7 (A), and ? (V) is a carrier voltage value obtained when the current value reaches 1.0?5 (A).

Abstract: A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6???8 and 14?mw/?<30 are satisfied, where ? represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.

Abstract: A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6???8 and 14?mw/?<30 are satisfied, where ? represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.

Abstract: This vibration welding device is a device that vibration welds an airbag holding box and an installment panel having a tear line. The vibration welding device is provided with a support jig that carries and affixes the installment panel during vibration welding. The support jig is provided with a groove that permits thermal expansion during vibration welding of the installment panel at a position differing from the tear line.

Abstract: Toner of one aspect of the present invention has a weight average molecular weight Mw of 30,000?Mw?95,263 as determined from a molecular weight distribution based on GPC, includes a THF-insoluble gel component at a weight proportion of less than 5%, and includes components each having a molecular weight of 500 to 1500 which components have an area occupancy of 4% to 10% on a chart of the molecular weight distribution based on GPC.

Abstract: Toner of one aspect of the present invention has a weight average molecular weight Mw of 30,000?Mw?95,263 as determined from a molecular weight distribution based on GPC, includes a THF-insoluble gel component at a weight proportion of less than 5%, and includes components each having a molecular weight of 500 to 1500 which components have an area occupancy of 4% to 10% on a chart of the molecular weight distribution based on GPC.

Abstract: This vibration welding device is a device that vibration welds an airbag holding box and an installment panel having a tear line. The vibration welding device is provided with a support jig that carries and affixes the installment panel during vibration welding. The support jig is provided with a groove that permits thermal expansion during vibration welding of the installment panel at a position differing from the tear line.

Abstract: A two-component color developer containing a toner and a resin-coated carrier, the toner containing at least a polyester resin as a binding resin, an organic pigment as a colorant and inorganic fine particles as an external additive, wherein the inorganic fine particles have a negative polarity, the toner has a volume resistivity of 40×109 to 220×109 ?cm and a negative polarity, and the carrier has a coat durability of 90% or greater.

Abstract: Toners of respective colors of a full-color toner set each contain a binder resin which is polyester resin; and a release agent dispersing aid which is styrene acrylic copolymer resin having at least one of an ?-methylstyrene structure and a styrene structure. The styrene acrylic copolymer resin is contained in an amount of 7 parts by weight to 14 parts by weight with respect to 100 parts by weight of the polyester resin. The full-color toner set has a sum of resistivities of the toners of the respective colors of 410×109 to 510×109 (?·cm).

Abstract: Toners of respective colors of a full-color toner set each contain a binder resin which is polyester resin; and a release agent dispersing aid which is styrene acrylic copolymer resin having at least one of an ?-methylstyrene structure and a styrene structure. The styrene acrylic copolymer resin is contained in an amount of 7 parts by weight to 14 parts by weight with respect to 100 parts by weight of the polyester resin. The full-color toner set has a sum of resistivities of the toners of the respective colors of 410×109 to 510×109 (?·cm).

Abstract: A toner for electrostatic image development is configured such that: a binder resin is polyester resin; a release agent dispersing aid is styrene acrylic copolymer resin having at least one of an ?-methylstyrene structure and a styrene structure, and is contained in an amount of 5.5 parts by weight to 12 parts by weight with respect to 100 parts by weight of the polyester resin; and the styrene acrylic copolymer resin has an acid value of 3 KOHmg/g to 9 KOHmg/g, and the toner for electrostatic image development has an acid value of 14 KOHmg/g to 19 KOHmg/g.

Abstract: Toner of one aspect of the present invention has a weight average molecular weight Mw of 30,000?Mw?95,263 as determined from a molecular weight distribution based on GPC, includes a THF-insoluble gel component at a weight proportion of less than 5%, and includes components each having a molecular weight of 500 to 1500 which components have an area occupancy of 4% to 10% on a chart of the molecular weight distribution based on GPC.

Abstract: A two-component color developer containing a toner and a resin-coated carrier, the toner containing at least a polyester resin as a binding resin, an organic pigment as a colorant and inorganic fine particles as an external additive, wherein the inorganic fine particles have a negative polarity, the toner has a volume resistivity of 40×109 to 220×109 ?cm and a negative polarity, and the carrier has a coat durability of 90% or greater.

Abstract: A method for manufacturing a capsule toner having improved preservability with no deterioration in low-temperature fixability is provided. The method for manufacturing a capsule toner includes a mixed fine resin particle adhering step of adhering mixed fine resin particles including crystalline polyester fine resin particles and amorphous fine resin particles to surfaces of toner base particles to form mixed fine resin particle-adhered particles, a spraying step of spraying a mixed solution of a liquid for plasticizing the toner base particles and the mixed fine resin particles and a crystal nucleating agent, while fluidizing the mixed fine resin particle-adhered particles, and a film-forming step of making a film of the mixed fine resin particles by impact force so that the film is a resin coating layer on the surfaces of the toner base particles.

Abstract: There are provided a capsule toner, a two-component developer, and a capsule toner manufacturing method. The capsule toner in which a resin coating layer made of fine release-agent particles and fine resin particles is made on the surfaces of toner base particles, and thus excellent offset resistance without impairing blocking resistance can be obtained. The capsule toner includes toner base particles containing a binder resin and a colorant, and a resin coating layer made of fine release-agent particles and fine resin particles, for covering the surfaces of the toner base particles. The fine release-agent particles are dispersed in the resin coating layer.

Abstract: A toner manufacturing method is provided. The toner manufacturing method includes a step of adhering fine resin particles whose volume average particle size is 5% or more and 17% or less of a volume average particle size of toner base particles, to surfaces of the toner base particles; and a step of plasticizing the toner base particles and the fine resin particles by adding mechanical impact thereto while spraying lower alcohol, and fusing the fine resin particles to the surfaces of the toner base particles to form a plurality of projections of the fine resin particles, on the surfaces of the toner base particles. Surface coverage of the surfaces of the toner base particles with the projections is 10% or more and 50% or less.

Abstract: A capsule toner capable of enhancing low temperature fixation property without impairing preservation property under a high temperature environment, a two-component developer, and an image forming apparatus are provided. The capsule toner is constituted of toner particles having toner base particles and a coating layer for coating the surface thereof. The toner base particle includes styrene-acrylic resin or polyester resin as a binder resin, and the coating layer includes styrene-acrylic resin or polyester resin. The capsule toner contains 0.05% by weight or more and 0.70% by weight or less of volatile plasticizer based on a total amount of the capsule toner.

Abstract: A method for manufacturing a capsule toner, capable of obtaining a capsule toner including a coating layer having uniform thickness at high yield is provided. The method for manufacturing a capsule toner includes a fine resin particle adhering step of adhering fine resin particles to surfaces of toner base particles, a spraying step of spraying a spray liquid for plasticizing the toner base particles and the fine resin particles, while fluidizing the toner base particles and the fine resin particles, and a film-forming step of fluidizing the toner base particles and the fine resin particles until the fine resin particles adhered to the surfaces of the toner base particles are softened to form a film. In the spraying step, ultrasonic vibration is applied to set a number average liquid-droplet diameter of the spray liquid to less than 10 ?m.

Abstract: A manufacturing apparatus provided with a rotary stirring section and a powder passage is used to manufacture the resin-layer coated carrier. At a fine resin particle adhering step, a magnetic base particle and a fine resin particle are inputted into the powder passage with the rotary stirring section rotating and the fine resin particle is adhered onto the surface of the magnetic base particle. At a spraying step, at least a liquid that plasticizes the fine resin particles is sprayed with spray gas from a spraying section on the magnetic base particle and the fine resin particle which are in a fluidized state in the powder passage. At a film-forming step, rotation by the rotary stirring section is continued to fluidize the magnetic base particles and the fine resin particles until the fine resin particles adhered to the magnetic base particles are softened to form a film.