The above problem is solved by a cyan toner including toner particles including at least a binder resin, a sublimable dye, and a mold release agent, in which the binder resin includes a styrene-acrylic resin, the sublimable dye includes C.I. Disperse Blue 56 at a ratio of 5% to 15% by mass in the toner particles, the mold release agent has a melting point equal to or higher than 70? C. and equal to or lower than a softening point Tm of the cyan toner, and transmittance at a wavelength of 430 nm measured using an ultraviolet-visible spectrophotometer is 30% or more.

An electrostatic charge image developing toner includes a toner particle containing a binder resin and a releasing agent, and the following requirement (1) is satisfied in cross section observation of the toner particle: requirement (1): the number of a releasing agent domain having a long diameter of 500 nm or more and 1,000 nm or less is 7 or more on average per toner particle.

A toner contains 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. The specific external additive particles each include an aluminum oxide particle and a coat layer covering the surface of the aluminum oxide particle. The coat layers contain antimony tin oxide particles. The specific external additive particles have a powder specific resistance of no greater than 100 ?.Math.cm. The specific external additive particles have a volume median diameter of 100 nm to 550 nm. The specific external additive particles have surfaces with an arithmetic mean roughness Ra of 8 nm to 45 nm. The specific external additive particles have a content of 0.3 parts by mass to 4.0 parts by mass relative to 100 parts by mass of the toner mother particles.

A two-component developer contains a carrier and a toner in which an external additive is attached to a toner particle surface. The external additive contains a fine powder that has an average primary particle diameter of 10 nm to 25 nm and contains aluminum. The two-component developer has an apparent density of 1.7 g/cm.sup.3 to 2.0 g/cm.sup.3 at a toner concentration in of 4% by mass. A resistance value when a voltage of 1,000 V or 600 V is applied to a magnetic brush having a length of 0.1 cm formed by placing the two-component developer having a toner concentration of 4% by mass at a filling rate of 20% between two electrodes disposed parallel to each other at an interval of 0.1 cm in a magnetic field of 200 mT is 1 G? or more or 22 G? or less, respectively, per square centimeter of the electrodes.

A two-component developer contains a carrier containing carrier particles and a toner containing toner particles. The carrier particles each include a carrier core and a coat layer covering the surface of the carrier core. The coat layers contain a silicone resin. 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 resin particles. The specific resin particles contain a crosslinked resin. The specific resin particles have a number average primary particle diameter of at least 37 nm and no greater than 103 nm. The specific resin particles have a content of at least 0.6 parts by mass and no greater than 1.0 part by mass relative to 100 parts by mass of the toner mother particles.

A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.

A liquid electrophotographic composition is described, which comprises a carrier liquid, a polymer resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid, and at least 5 wt. % of an optical brightening agent based on the total solids content of the composition.

A liquid electrophotographic composition is described, which comprises a carrier liquid, a polymer resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid, and at least 5 wt. % of an optical brightening agent based on the total solids content of the composition.

A toner comprising a toner particle that contains a binder resin and a wax, wherein in a cross sectional image of the toner observed with a transmission electron microscope, the toner satisfies the following formulas (1) and (2)
18.0%As1.5%(1)
10.0Ac/As2.0(2)
where As represents the proportion for the area taken up by the wax present in the surface layer region having distance 1.0 m in a radial direction inward from the surface of the toner, and Ac represents the proportion for the area taken up by the wax present in the inner region positioned further inside than the surface layer region.

A developer having low-temperature fixability and storage stability, and capable of prolonging the service life is provided. A toner includes a coloring agent, an amorphous polyester, a crystal line polyester, ester wax containing multiple ester compounds, each having a carbon number selected from 32 to 54, and hydrophobic silica having an average primary particle diameter of 8 to 35 nm. When the ion intensity ratio of each ester compound having a different carbon number is expressed as percentage, the content (a) of the ester compound having a carbon number of (Cn) showing the maximum intensity ratio is from 20 to 55% by weight of the entire ester wax, the sum (g) of the content (e) of the ester compound having a carbon number of (Cn+2) and the content (f) of the ester compound having a carbon number of (Cn+4) satisfies the following formula: 0.065g/a0.200.