Abstract: A toner for developing an electrostatic image includes toner base particles containing a binder resin and an inorganic pigment, and an external additive, wherein the external additive contains alumina particles, and the number average particle size of primary particles of the alumina particles is in the range of 5 nm to 60 nm.

Abstract: An electrostatic image developing toner includes toner base particles, wherein the toner base particles contain: an amorphous polyester resin; a crystalline resin; and o-acetoacetaniside, and the content of the o-acetoacetaniside in the toner base particles is 0.1 ppm by mass or more and 200 ppm by mass or less.

Abstract: An electrostatic image developing toner includes toner base particles, wherein the toner base particles contain: an amorphous polyester resin; a crystalline resin; and o-acetoacetaniside, and the content of the o-acetoacetaniside in the toner base particles is 0.1 ppm by mass or more and 200 ppm by mass or less.

Abstract: The electrostatic charge image developing toner of the present invention is an electrostatic charge image developing toner including a toner mother particle including at least a binding resin, and an external additive attached onto a surface of the toner mother particle, wherein a median size on a volume basis of the toner mother particle is in the range from 3.0 to 5.0 ?m, the binding resin contains at least an amorphous polyester resin as a main component, and a spherical silica particle (1) having a number average particle size in the range from 20 to 55 nm is included as the external additive.

Abstract: The electrostatic charge image developing toner of the present invention is an electrostatic charge image developing toner including a toner mother particle including at least a binding resin, and an external additive attached onto a surface of the toner mother particle, wherein a median size on a volume basis of the toner mother particle is in the range from 3.0 to 5.0 ?m, the binding resin contains at least an amorphous polyester resin as a main component, and a spherical silica particle (1) having a number average particle size in the range from 20 to 55 nm is included as the external additive.

Abstract: To provide a magenta toner for electrostatic charge image development including a crystalline polyester resin and an amorphous resin as a binder resin, which is a means for improving low temperature fixability, scattering properties, GI value, saturation, and light fastness. A magenta toner for electrostatic charge image development including an amorphous resin and a crystalline polyester resin as a binder resin, wherein predetermined quinacridone-based pigment, metal element-containing monoazo pigment, and naphthol AS-based pigment are included as a coloring agent, and the combined content of the quinacridone-based pigment and the metal element-containing monoazo pigment is 50-90% by mass of the total coloring agent.

Abstract: To provide a magenta toner for electrostatic charge image development including a crystalline polyester resin and an amorphous resin as a binder resin, which is a means for improving low temperature fixability, scattering properties, GI value, saturation, and light fastness. A magenta toner for electrostatic charge image development including an amorphous resin and a crystalline polyester resin as a binder resin, wherein predetermined quinacridone-based pigment, metal element-containing monoazo pigment, and naphthol AS-based pigment are included as a coloring agent, and the combined content of the quinacridone-based pigment and the metal element-containing monoazo pigment is 50-90% by mass of the total coloring agent.

Abstract: An electrostatic charge image developing white toner according to the present invention includes toner base particles including rutile type titanium oxide particles as colorant and a binder resin. The rutile type titanium oxide particles are composed of two groups Ga and Gb of rutile type titanium oxide particles have different volume particle size distribution. A volume particle size distribution curve of the rutile type titanium oxide particles represents diameter on a horizontal axis and volume ratio on a vertical axis and has two main peaks. Diameters Da and Db of peak top positions of the two main peaks are respectively within a range of 100 to 500 nm, and satisfy following Relational expressions: (Relational expression 1):??25 nm?Db?Da?200 nm (Relational expression 2):??(mass of Ga):(mass of Gb)=5:95 to 30:70.

Abstract: An electrostatic charge image developing toner includes a toner matrix particle having a core-shell structure. The toner matrix particle contains: a core particle including an amorphous resin, a colorant, a release agent, and a crystalline resin; and a shell layer coating a surface of the core particle at a coverage of 60 to 99%. The shell layer includes an amorphous resin. The amorphous resin contained in the core particle differs from the amorphous resin contained in the shell layer. The toner matrix particle has one to seven discrete shell domains determined by observation of a cross section of the toner matrix particle with an electron microscope.

Abstract: A method of producing a toner for developing electrostatic images includes Steps I to III is provided. The toner includes a toner matrix particle having a core-shell structure. The toner matrix particle includes a core particle including an amorphous resin A and a crystalline material, and a shell including an amorphous resin B. The shell includes a phase of the amorphous resin B that is not fused with the core particle at the interface. The amorphous resin A differs from the amorphous resin B.

Abstract: An object of the present invention is to provide an electrostatic image developing toner including toner particles containing: an amorphous resin including an amorphous vinyl resin; and a crystalline resin, wherein the toner particles contain: a coloring agent including C. I. Pigment Yellow 74; and alkoxy aniline with an amount in the range of 0.1 to 50.0 mass ppm in the toner particles.

Abstract: An electrostatic charge image developing white toner according to the present invention includes toner base particles including rutile type titanium oxide particles as colorant and a binder resin. The rutile type titanium oxide particles are composed of two groups Ga and Gb of rutile type titanium oxide particles have different volume particle size distribution. A volume particle size distribution curve of the rutile type titanium oxide particles represents diameter on a horizontal axis and volume ratio on a vertical axis and has two main peaks.

Abstract: Provided is a method of forming an electrophotographic image using a plurality of color toners, the method containing: a charging step; an exposing step; a developing step; and a transferring step, wherein the plurality of color toners each respectively contain toner particles including a binder resin, a coloring agent, a releasing agent, and a crystalline resin; the binder resin contains an amorphous vinyl polymer formed with a vinyl monomer; the toner particles contain the amorphous vinyl polymer in the range of 10 to 90 mass %; and a maximum value of an acid value difference of the color toners is in the range of 1 to 10 mg KOH/g.

Abstract: A method of producing a toner for developing electrostatic images includes Steps I to III is provided. The toner includes a toner matrix particle having a core-shell structure. The toner matrix particle includes a core particle including an amorphous resin A and a crystalline material, and a shell including an amorphous resin B. The shell includes a phase of the amorphous resin B that is not fused with the core particle at the interface. The amorphous resin A differs from the amorphous resin B.

Abstract: An electrostatic charge image developing toner includes a toner matrix particle having a core-shell structure. The toner matrix particle contains: a core particle including an amorphous resin, a colorant, a release agent, and a crystalline resin; and a shell layer coating a surface of the core particle at a coverage of 60 to 99%. The shell layer includes an amorphous resin. The amorphous resin contained in the core particle differs from the amorphous resin contained in the shell layer. The toner matrix particle has one to seven discrete shell domains determined by observation of a cross section of the toner matrix particle with an electron microscope.

Abstract: An object of the present invention is to provide an electrostatic image developing toner including toner particles containing: an amorphous resin including an amorphous vinyl resin; and a crystalline resin, wherein the toner particles contain: a coloring agent including C. I. Pigment Yellow 74; and alkoxy aniline with an amount in the range of 0.1 to 50.0 mass ppm in the toner particles.

Abstract: Provided is an electrostatic image developing toner containing toner particles having a domain-matrix structure formed with a matrix of an amorphous polyester resin and a domain of a crystalline resin, wherein the toner particles contain an releasing agent and alkoxy aniline; and a content of the alkoxy aniline contained in the toner particles is in the range of 0.1 to 15.0 mass ppm.

Abstract: Provided is a method of forming an electrophotographic image using a plurality of color toners, the method containing: a charging step; an exposing step; a developing step; and a transferring step, wherein the plurality of color toners each respectively contain toner particles including a binder resin, a coloring agent, a releasing agent, and a crystalline resin; the binder resin contains an amorphous vinyl polymer formed with a vinyl monomer; the toner particles contain the amorphous vinyl polymer in the range of 10 to 90 mass %; and a maximum value of an acid value difference of the color toners is in the range of 1 to 10 mg KOH/g.

Abstract: A particulate toner for developing electrostatically charged image includes a binder resin, a colorant, a mold release agent and a plasticizer. The binder resin comprises a styrene-acrylic resin. A relationship represented by Expression Ac<Aw is satisfied. Aw represents the average aspect ratio of domains of the mold release agent in a cross section of the particulate toner. Ac represents the average aspect ratio of domains of the plasticizer.

Abstract: An image forming method comprising the step of: forming a toner image employing toner particles containing at least a resin on an image supporting substrate having thereon a toner holding layer via a toner image holding process to form an image print, the toner image being held in the toner holding layer in the toner image holding process, wherein at least the toner particles or the image supporting substrate is separated from the image print via a separation process; and at least the separated toner particles or the separated image supporting substrate is recyclable as an image forming material.