Abstract: An electrostatic image developing toner includes a toner particle including a binder resin and a colorant. The net intensity NS of sulfur included in the toner particle and the total net intensity NA of an alkali metal and an alkaline-earth metal included in the toner particle, which are measured by X-ray fluorescence analysis, satisfy 1.0<NS/NA<22.0.

Abstract: An electrostatic charge image developing toner includes a toner particle containing a binder resin, a release agent, a divalent metal, and a trivalent metal, in which the release agent has a domain diameter of 0.5 ?m or greater and 1.5 ?m or less.

Abstract: A manufacturing method of an electrostatic charge image developing toner includes aggregating particles including binder resin particles in a dispersion to form aggregated particles and heating the aggregated particles to raise a temperature of the aggregated particles and fuse the aggregated particles, in which, in the fusing, after raising the temperature to equal to or higher than a glass transition temperature of a binder resin in the binder resin particles, while agitating a dispersion containing the aggregated particles, an agitating rotation speed in the agitation of the dispersion is decreased in a stepwise manner or in a continuous manner.

Abstract: A manufacturing method of an electrostatic charge image developing toner includes a step of aggregating particles including binder resin particles and release agent particles in a dispersion to form aggregated particles and fusing the aggregated particles by heating the aggregated particles to raise a temperature, in which, in the fusing, an agitation equipment equipped with a rotating shaft and an agitating blade is used, a diameter d (m) of the agitating blade is 0.2 m or more, and in a case where, in the fusing, a circumferential speed of the agitating blade is denoted by u (m/s), a density of the dispersion is denoted by ? (kg/m3), an inner diameter of a granulating container is denoted by D (m), and a temperature of the dispersion is denoted by T (° C.), a value of ?ud/DT is 1 or more and 40 or less.

Abstract: A manufacturing method of an electrostatic charge image developing toner includes aggregating particles including binder resin particles in a dispersion to form aggregated particles and fusing the aggregated particles by heating the aggregated particles to raise a temperature, in which an agitating Reynolds number in agitation of the dispersion during the fusing is 5.0×104 or more and 1.0×106 or less.

Abstract: A preparing method of an electrostatic charge image developing toner includes: aggregating binder resin particles in a dispersion containing the binder resin particles to form aggregated particles; and coalescing the aggregated particles by heating a dispersion containing the aggregated particles to form toner particles, in which the aggregating includes adding a divalent or higher valent metal salt compound to the dispersion containing the binder resin particles, and the preparing method satisfies the following Requirement (1), Requirement (1): a ratio M/S of a total metal ion amount M (mol) generated from the divalent or higher valent metal salt compound to a total surface area S (m2) of the binder resin particles at a start of the aggregating is 1.5×1010 or more and 2.5×1013 or less.

Abstract: An electrostatic charge image developing toner includes a toner particle that contains a binder resin having an acid value of 5 mgKOH/g or more and 25 mgKOH/g or less, and a pigment having an isoindoline skeleton, in which a total Net intensity NA of an alkali metal and an alkaline earth metal, which is measured by fluorescent X-ray analysis, in the toner particle is 1.50 kcps or more and 4.00 kcps or less.

Abstract: An electrostatic charge image developing toner includes: a toner particle containing a binder resin; and an external additive including a silica particle having a circularity of more than 0.5 and 0.9 or less and a volume average particle diameter of more than 100 nm and 300 nm or less, in which a total Net intensity NA of an alkali metal element and an alkaline earth metal element in the toner particle measured by fluorescence X-ray analysis is 0.10 kcps or more and 1.20 kcps or less.

Abstract: A manufacturing method of an electrostatic charge image developing toner has first aggregation of aggregating resin particles for a core in a raw material dispersion B for a core at an aggregation temperature equal to or lower than a glass transition temperature Tg of the resin particles for a core to form aggregated core particles, the raw material dispersion B for a core being obtained by adding an ionic compound having a monovalent cation to a raw material dispersion A for a core, that contains the resin particles for a core having a glass transition temperature lower than 40° C.

Abstract: An electrostatic charge image developing toner includes: a toner particle containing a binder resin; and an external additive containing alumina particles having a volume average particle diameter of more than 5 nm and 80 nm or less and silica particles having a volume average particle diameter of 10 nm or more and 90 nm or less, and in the toner particle, a Net intensity NA of a total of an alkali metal element and an alkaline earth metal element, measured by fluorescence X-ray analysis, is 0.10 kcps or more and 1.30 kcps or less, and a ratio (Ws/Wa) of a content Ws of the silica particles to a content Wa of the alumina particles is more than 0.5 and less than 35.

Abstract: A method for producing a toner for electrostatic charge image development includes: aggregating binder resin particles in a dispersion containing the binder resin particles to form aggregated particles; terminating growth of the aggregated particles by adding an alkaline aqueous solution to a dispersion containing the aggregated particles to increase a pH of the dispersion containing the aggregated particles; and fusing and coalescing the aggregated particles into toner particles by heating the dispersion containing the aggregated particles. Terminating the growth of the aggregated particles includes, while stirring the dispersion containing the aggregated particles, stepwise or continuously reducing a stirring power per unit volume.

Abstract: An electrostatic image developing toner includes an amorphous polyester resin and a crystalline polyester resin, wherein a Net intensity NNa of a Na element and a Net intensity NCl of a Cl element, the Net intensities NNa and NCl being determined by X-ray fluorescence analysis, satisfy 2.5?NCl/NNa?260.0.

Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that in an x-ray fluorescence analysis of the toner, the net intensity of the peak for the Mg element is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of at least one compound represented by formula (1), MTiO3??(1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.

Abstract: A method for producing a toner for developing electrostatic charge images includes: preparing a first dispersion containing, dispersed therein, first aggregated particles containing a binder resin; preparing a second dispersion containing second aggregated particles dispersed therein, the second aggregated particles being prepared by attaching resin particles to surfaces of the first aggregated particles in the first dispersion; heating the second dispersion to a fusion temperature at which the second aggregated particles in the second dispersion are fused to each other; and holding the second dispersion at the fusion temperature. 20 mass% or more of a weak acid relative to the mass of the second aggregated particles is added to the second dispersion during the heating of the second dispersion or the holding of the second dispersion, or during the heating of the second dispersion and the holding of the second dispersion.

Abstract: A method for producing an electrostatic charge image developing toner includes forming aggregated particles by aggregating at least resin particles in a dispersion liquid containing the resin particles, and fusing/coalescing the aggregated particles by heating an aggregated particle dispersion liquid containing a base having volatility and the aggregated particles dispersed therein in a fusion/coalescence tank which houses the aggregated particle dispersion liquid. In fusing/coalescing the aggregated particles, at least one of conditions (1) to (3) below is satisfied, (1): The fusion/coalescence tank has one or plural openings in an upper portion thereof, and the total area ratio of the openings is 5 cm2/m3 or more per unit amount of the aggregated particle dispersion liquid, (2): The aggregated particles are fused/coalesced in the fusion/coalescence tank in a state of reduced pressure within a range of (atmospheric pressure?0.

Abstract: An electrostatic image developing toner includes an amorphous polyester resin, a crystalline polyester resin, and C.I. Pigment Red 57:1, wherein a Net intensity NMg of an Mg element, the Net intensity NMg of being determined by X-ray fluorescence analysis, is 0.10 kcps or more and 0.40 kcps or less.

Abstract: A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.40 to 1.20 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.

Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and external additives including particles of at least one compound represented by formula (1) and particles of a metal salt of a fatty acid, MTiO3??(1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.

Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of a metal salt of a fatty acid.

Abstract: An electrostatic charge image developing toner includes a toner particle containing a binder resin, a release agent, a divalent metal, and a trivalent metal, in which the release agent has a domain diameter of 0.5 ?m or greater and 1.5 ?m or less.