Abstract: A toner having good development durability, storage stability, environmental stability, and low-temperature fixability is provided. The toner contains toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer contains a specific unit. In a chart obtained by 29Si-NMR measurement of THF insoluble components of the toner particles, the ratio of a peak area attributable to a specific structure to the total peak area of the organic silicon polymer is 0.40 or more.

Abstract: A toner having good environmental stability, low-temperature fixability, development durability, and storage stability is provided. A toner includes toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer is obtained by polymerizing a compound having a specific structure. The surface layers have a particular average thickness Dav. In mapping by focused-ion-beam time-of-flight secondary ion mass spectroscopy, a ratio of silicon ions to carbon ions released from the toner particles upon irradiation of toner particle surfaces with primary ions is a particular value.

Abstract: A toner is provided, where good cleanability is exhibited, abrasion variations of the photo conductor surface is reduced, and contamination of a charge member is reduced. The toner includes toner particles and organic-inorganic composite fine particles on the toner particle surfaces, wherein each of the organic-inorganic composite fine particles is a particle in which inorganic fine particles are exposed at the surfaces of vinyl based resin particles in such a way that convex portions derived from the inorganic fine particles are formed on the surfaces, the average circularity of the toner is 0.960 or more, and the absolute value Q of the amount of triboelectricity of the toner measured by a two-component method and the electrostatic adhesion F of the toner satisfy 0.003?F/Q2?0.040.

Abstract: A toner contains toner particles having a surface layer containing an organosilicon polymer. The organosilicon polymer has a particular partial structure. The surface layer has a particular average thickness Dav. The ratio of silicon ions to carbon ions emitted from the toner particles in response to irradiation of the toner particles with primary ions in mapping measurement by FIB-TOF-SIMS is specified.

Abstract: Provided is a toner that has satisfactory chargeability and hardly causes a reduction in image density, fogging, and density unevenness in various environments ranging from a low-temperature and low-humidity environment to a high-temperature and high-humidity environment. The toner includes toner particles obtained by fixing resin particles to toner base particles each containing resins, in which: the resins contain 50.0 mass % or more of a styrene-acrylic resin and 1.0 to 40.0 mass % of a polyester resin A; the polyester resin A contains 0.10 to 30.00 number % of an isosorbide unit; the fixing amount of the resin particles to the toner base particles is from 0.1 to 5.0 parts by mass with respect to 100 parts by mass of the toner base particles; and the glass transition temperature of the resin particles is higher than the glass transition temperature of the toner base particles.

Abstract: A toner comprising a toner particle containing a resin, wherein the resin contains a styrene acrylic resin and a polyester resin A, the content ratio of the styrene acrylic resin is 50.0 mass % to 99.0 mass % based on the resin, the content ratio of the polyester resin A is 1.0 mass % to 35.0 mass % based on the resin, and the polyester resin A contains 0.10 mol % to 30.0 mol % of an isosorbide unit based on a total number of monomer units constituting the polyester resin A.

Abstract: A toner including a toner particle that contains a binder resin, a polyester resin A and a wax, wherein the polyester resin A contains a specific amount of an isosorbide unit based on a total number of monomer units constituting the polyester resin A, the content of the polyester resin A is a specific amount, and when observing a cross-section of the toner, twenty toner particle cross-sections are selected that have a major axis R (?m) that satisfies a specific relationship with respect to the weight-average diameter D4 (?m) of the toner, each major axis r that have the largest major axis is measured for those domains composed of wax present in the selected toner particle cross-sections, and the arithmetic mean (r/R)st of the determined r/R satisfies a specific relationship.

Abstract: A toner is provided that can maintain high transferability even in long-term image output, can maintain high chargeability even in a high temperature and high humidity environment, and rarely causes fogging due to charging failure. The toner contains toner particles produced by a suspension polymerization method or a dissolution suspension method. The volume-average particle diameter (Dv) of silica particles is 50 nm or more and 800 nm or less. The mass loss rate due to heating of the silica particles from 105° C. to 200° C. is 0.60% or less. The hydrophobicity of the silica particles is 5% or more and less than 40%.

Abstract: A toner containing toner particles, each of which contains a binder resin and a colorant, and silica particles, wherein the silica particles have a volume average particle diameter (Dv) of 70 nm or more and 500 nm or less, the variation coefficient of diameters of the silica particles, based on volume distribution thereof, is 23% or less, and wherein when the silica particles are heated from 105° C. to 200° C., the ratio of mass decrease is 0.60% or less.

Abstract: The present invention is a toner that has toner particles that have a surface layer that contains an organosilicon polymer, wherein this organosilicon polymer has a specific substructure and the ratio [ST3], in a 29Si-NMR measurement of a tetrahydrofuran-insoluble matter of the toner particles, of the peak area for this substructure to the total peak area for the organosilicon polymer satisfies the relationship ST3?0.40.

Abstract: A toner having good development durability, storage stability, environmental stability, and low-temperature fixability is provided. The toner contains toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer contains a unit having a specific structure. The average thickness Dav. of the surface layers is a specific value and the silicon concentration determined by ESCA is 2.5% or more. The toner has a shape factor SF-2 of 140 or more and 260 or less and an average circularity of 0.970 or more and 0.990 or less.

Abstract: A toner having good development durability, storage stability, environmental stability, and low-temperature fixability is provided. The toner contains toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer contains a unit having a specific structure. The average thickness Dav. of the surface layers is a specific value and the silicon concentration determined by ESCA is 2.5% or more. The toner has a shape factor SF-2 of 140 or more and 260 or less and an average circularity of 0.970 or more and 0.990 or less.

Abstract: A toner having good environmental stability, low-temperature fixability, development durability, and storage stability is provided. A toner includes toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer is obtained by polymerizing a compound having a specific structure. The surface layers have a particular average thickness Dav. In mapping by focused-ion-beam time-of-flight secondary ion mass spectroscopy, a ratio of silicon ions to carbon ions released from the toner particles upon irradiation of toner particle surfaces with primary ions is a particular value.

Abstract: A toner having good development durability, storage stability, environmental stability, and low-temperature fixability is provided. The toner contains toner particles each including a surface layer that contains an organic silicon polymer. The organic silicon polymer contains a specific unit. In a chart obtained by 29Si-NMR measurement of THF insoluble components of the toner particles, the ratio of a peak area attributable to a specific structure to the total peak area of the organic silicon polymer is 0.40 or more.

Abstract: A toner containing toner particles, each of which contains a binder resin and a colorant, and silica particles, wherein the silica particles have a volume average particle diameter (Dv) of 70 nm or more and 500 nm or less, the variation coefficient of diameters of the silica particles, based on volume distribution thereof, is 23% or less, and wherein when the silica particles are heated from 105° C. to 200° C., the ratio of mass decrease is 0.60% or less.

Abstract: A toner is provided that can maintain high transferability even in long-term image output, can maintain high chargeability even in a high temperature and high humidity environment, and rarely causes fogging due to charging failure. The toner contains toner particles produced by a suspension polymerization method or a dissolution suspension method. The volume-average particle diameter (Dv) of silica particles is 50 nm or more and 800 nm or less. The mass loss rate due to heating of the silica particles from 105° C. to 200° C. is 0.60% or less. The hydrophobicity of the silica particles is 5% or more and less than 40%.

Abstract: A toner containing toner particles, each of which contains a binder resin and a colorant, and silica particles, wherein the silica particles have a volume average particle diameter (Dv) of 70 nm or more and 500 nm or less, the variation coefficient of diameters of the silica particles, based on volume distribution thereof, is 23% or less, and wherein when the silica particles are heated from 105° C. to 200° C., the ratio of mass decrease is 0.60% or less.