An emulsion aggregation toner including a toner particle comprising at least one resin; an optional colorant; an optional wax; and a charge control agent disposed on a surface of the toner particle; the control agent comprising a phenyl based siloxane; and a complex formed from a metal ion donor and at least one of a ligand selected from a member of the group consisting of a polyaromatic acid comprising humic acid, a pyranone based ligand, a furanone based ligand, or a combination thereof.

A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.

A toner comprising a toner particle comprising a binder resin, wherein the binder resin has a side-chain crystalline polymer B having a monomer unit A made of at least one polymerizable monomer A selected from the group consisting of (meth)acrylic acid esters having a linear alkyl group having 18 to 36 carbon atoms, and the toner particle comprises boric acid.

A toner includes toner particles containing a binder resin and a release agent. The binder resin contains an amorphous resin A and a crystalline polyester C. The amorphous resin A is a polyester and has, as a structure that forms a polyester backbone, (i) a polyethylene terephthalate structural moiety and (ii) a unit having a specified structure. An SP value of the amorphous resin A is represented by SP.sub.A, an SP value of the crystalline polyester C is represented by SP.sub.C, and a formula 1.00SP.sub.A-SP.sub.C1.35 is satisfied. The toner contains at least one metal element selected from the metal element group consisting of calcium, magnesium, sodium, and barium and contains aluminum.

A toner has the following constitution. The toner particle contains an inorganic fine particle having a mean particle size in a range from 10 nm to 60 nm. The inorganic fine particle is at least one selected from the group consisting of strontium titanate, silica coated with alumina, titania, and the like. When layers having depths of 0 nm to 10 nm, 10 nm to 100 nm, and 100 nm or more from the surface of the toner particle are defined as toner layers A to C, respectively, an abundance ratio of the inorganic fine particle is the highest in the toner layer B. At the interface (toner layer B) in the electronic image of the toner particle cross section, an interface having a small abundance ratio of the inorganic fine particle and an interface having a large abundance ratio of the inorganic fine particle are present, and the length of both interfaces is 2 m or more. The abundance ratio of the inorganic fine particle in the interface is 15% or less with respect to the interface .

A toner includes toner particles containing a binder resin. The binder resin contains an amorphous resin A and a crystalline polyester C. The amorphous resin A is a polyester and has, as a structure that forms a polyester backbone, (i) a polyethylene terephthalate structural moiety and (ii) a unit having a specified structure. An SP value of the amorphous resin A is represented by SP.sub.A, an SP value of the crystalline polyester C is represented by SP.sub.C, and a formula 1.00SP.sub.ASP.sub.C1.35 is satisfied. The toner contains a phosphorus element derived from a phosphorus compound, and a content of the phosphorus element in the toner based on a mass of the toner is 5 to 500 ppm.

Toner includes toner particles containing a binder resin and an external additive, wherein 1) the binder resin contains a polyester A in an amount of 50% by mass or more, and the polyester A contains a unit U.sub.iso derived from isophthalic acid in an amount of 90% by mole or more based on all units derived from an acid component, and 2) the toner contains hydrotalcite particles as the external additive.

An electrostatic charge image developing toner contains: a toner particle including a core portion containing a binder resin and a release agent that has a melting temperature Tm of 80 C. or less, and a coating layer that coats the core portion and contains an amorphous polyester resin, and the toner particle has a cross section in which one or more and three or less domains of the release agent are present in the core portion, the one or more and three or less domains having a circle-equivalent diameter of 1 m or more and 3 m or less, the toner particle has a volume average particle diameter of 4.2 m or more and 5.8 m or less, and a ratio of a thickness of the coating layer to a maximum diameter of the toner particle is 1% or more and 25% or less in the cross section.

A toner containing a toner particle containing a binder resin and a wax, wherein the binder resin contains a crystalline resin, the content of the crystalline resin is within a specific range, in viscoelastic measurement of the toner, when a storage elastic modulus of the toner at a temperature T ( C.) is G(T), in a graph in which a horizontal axis represents the temperature T, and a vertical axis represents a value d(log G(T))/dT obtained by differentiating Log G(T) with respect to the temperature T, the local minimum value is observed in a specific range, when a temperature at which the local minimum value is reached is defined as a temperature T1 ( C.), d(log G(T1))/dT, d(log G(T1+3))/dT0, G(T1), and G(T1+30) satisfy specific relationships.

A non-magnetic one-component toner includes a toner particle. The toner particle includes a toner base particle and an external additive. The external additive includes a silica particle and a fluorine-containing particle. In predetermined printing in which a standard test page image defined in ISO 19752 is printed on 1000 sheets of recording media, a content Si.sub.0 of the silica particles in the toner particles before the predetermined printing and a content Si.sub.1000D of the silica particles in the toner particles in a development unit after the predetermined printing satisfy a formula (1) 0.5 Si.sub.1000D/Si.sub.01.0, and a content F.sub.0 of the fluorine-containing particles in the toner particles before the predetermined printing and a content F.sub.1000D of the fluorine-containing particles in the toner particles in the development unit after the predetermined printing satisfy a formula (2) 1.0F.sub.1000D/F.sub.01.5.