A toner particle includes a core particle including a binder resin, and a plurality of fine particles that are smaller than the core particle and that are attached to a surface of the core particle. The fine particles include silica fine particles, and inorganic fine particles having a band gap energy of 2.5 to 7.0 eV and a relative permittivity of 30 to 100. The toner particle has a content of titanium dioxide of less than 1% by mass.

Provided is an electrostatic image development toner comprising colored resin particles and an external additive, the colored resin particles containing a binder resin, a colorant, an aromatic vinyl thermoplastic elastomer having a polymerizable unsaturated bond, and a release agent, wherein the release agent is an ester compound having a glycerol skeleton.

A toner, comprising a toner particle, wherein the toner particle has a core-shell structure comprising a core particle and a shell on a surface of the core particle, the shell comprises a polymer having monomer units represented by Formula (I) below, the toner comprises a specific external additive A, the external additive A is at least one selected from the group consisting of silica fine particles and organosilicon polymer fine particles, and a ratio of coverage of a surface of the toner particle with the external additive A is 0.3 area % or higher:

##STR00001## in Formula (I), L.sup.1 represents —COO(CH.sub.2).sub.n— (where n is an integer of 1 to 10), and carbonyl of L.sup.1 is bonded to a carbon atom of a main chain; R.sup.1 represents hydrogen or a methyl group; and R.sup.2 to R.sup.10 represent each independently an alkyl group having 1 to 4 carbon atoms.

An electrophotographic apparatus forms an image by forming an electrostatic latent image on the surface of an electrophotographic photoconductor and transferring a toner developed in the electrostatic latent image to a transfer material, where the photoconductor includes an outermost layer containing a silica filler, where the toner includes a toner base particle and an external additive as components, where the toner base particles at least contains a binder resin, a colorant, and a mold lubricant, and where the external additive represents externally-added silica and externally-added fine powder, the externally-added fine powder having the surface of a core hydrophobized with a silane compound, the core being derived by addition of silica to strontium titanate.

A toner contains a crystalline polyester resin, a non-crystalline polyester resin A having a melting temperature ranging between 99° C. to 108° C., a non-crystalline polyester resin B having a melting temperature ranging between 140° C. to 150° C., an ester wax, and a colorant. A ratio of the crystalline polyester resin is 5% mass to 15% mass to a total T of the crystalline polyester resin, the non-crystalline polyester resin A, the non-crystalline polyester resin B, the ester wax, and the colorant. A ratio of the non-crystalline polyester resin A to the total T is between 50% mass to 60% mass. A ratio of the non-crystalline polyester resin B to the total T is between 20% mass to 30% mass.

A toner includes toner particles. The toner particles each include a toner mother particle and an external additive attached to the surface of the toner mother particle. The external additive contains specific external additive particles and silica particles. The specific external additive particles each include a base containing barium titanate and a coat layer covering the base. The coat layer contains antimony tin oxide. Mass ratios of metal elements contained in the toner particles satisfy 0.10<(Ba/Si)<0.60 (formula (1)); 0.05<(Ba/Si)<0.20 (formula (2)); and 1.5<(Sn/Ba)<5.0 (formula (3)).

An electrostatic image developing toner includes toner particles including a binder resin and a release agent, an external additive A, and an external additive B. At least the external additive A is present on the surface of the toner particles. At least the external additive B is present on the external additive A. The external additive B is an aggregate of two or more particles. The toner particles have an average circularity of 0.8 or more and 0.94 or less. The amount of the release agent present at the surface of the toner particles is 5 area % or more and 30 area % or less based on the total surface area of the toner particles.

Provided is an electrostatic latent image developing toner including: toner base particles containing a binder resin and a white pigment; and an external additive, wherein silica particles are contained as the external additive, and the following relational expression (1) is satisfied, Relational expression (1): 0.70≤Wh_Si(B)/Wh_Si(A)≤0.95, in the above relational expression (1), Wh_Si (A) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner measured by wavelength dispersive X-ray fluorescence spectrometer, and Wh_Si (B) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner that has been ultrasonically dispersed in water.

Provided is a two-component developer for electrostatic charge image development including: toner particles containing toner base particles and an external additive disposed on a surface of the toner base particles; and carrier particles having a core material particle and a shell portion disposed on a surface of the core material particle, wherein the external additive contains inorganic particles surface-modified with a surface modifier represented by the following Formula (1); and a value of an iron element content (atomic %) measured by X-ray photoelectron spectroscopy (XPS) on a surface of the carrier particles satisfies the following Expression (1),

(R.sub.1).sub.4-n—Si—(X).sub.n  Formula (1):

4.0≤{A.sub.Fe/(A.sub.c+A.sub.o+A.sub.Fe)}×100≤15.0  Expression (1):

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 N.sub.A 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.