Provided is a method for producing a toner particle including a step of condensing a raw slurry by using a decanter-type centrifugal separator, in an aqueous medium. The step of condensing the raw slurry is carried out under following conditions: a centrifugal force is at least 500 G and less than 4000 G and a temperature is at least Tg10 C. and not more than Tg+10 C. And a ratio of a colored particles in condensed slurry is within a prescribed range.

A method includes grinding a wax into wax particles having a size in a range from about 600 microns to about 800 microns forming a mixture of the wax particles with water and a surfactant; and homogenizing the mixture to form a wax dispersion, the homogenizing step is maintained below about 35 C. A wax dispersion includes a wax a surfactant; and water, particles of the wax dispersion are a uniform, irregular, non-platelet morphology. A wax dispersion made by a process includes grinding a wax into wax particles having a size in a range from about 600 microns to about 800 microns, forming a mixture of the wax particles with water and a surfactant, and homogenizing the mixture to form a wax dispersion, the homogenizing step is maintained below about 35 C. and the wax has a uniform, irregular, non-platelet morphology imparted by combination of the grinding and homogenizing steps.

A developer including developer particles. Each developer particle includes a binder resin, a brilliant pigment whose principal component is aluminum, a yellow pigment, a magenta pigment, a reddish-orange fluorescent dye, and a yellow fluorescent dye. When an average particle diameter of the brilliant pigments included in the developer particles is expressed as D (m), a number proportion of the developer particles having particle diameters in a range from 4 m to 1.2D m in the whole developer particles is less than or equal to 4%.

A toner based on fly-ash rich carbon and method of producing are disclosed. The process includes preparing a latex and preparing a pigment including fly ash, where the fly ash has been ground to nanoparticle size. The latex, pigment including fly ash, and polyethylene wax are combined in an emulsion aggregation process. The latex is formed by a mixing process including combining ammonium bicarbonate, sodium dodecylbenzene sulfonate, styrene, acrylic acid, and methyl methacrylate. The emulsion aggregation process includes steps of dispersing a mixture of the polyethylene wax, pigment including fly ash, and latex in water, adding zinc oxide, nitric acid, adding Ethylenediaminetetraacetic acid (EDTA), elevating the temperature, neutralizing the product mixture with NaOH solution and cooling the mixture, Centrifuging, washing and drying are performed to achieve a finished toner which includes fly ash pigment, polyethylene wax, poly(styrene-methyl methacrylate-acrylic acid) latex, zinc oxide and a chelating agent.

A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the polymer coated magnetic carrier particles with hydrophobized titania surface additives before the polymer coated magnetic carrier particles are mixed with the toner particles. The surface treatment with the hydrophobized titania surface additives can be either a spherical, disk, or spindle shaped.

A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles, wherein the magnetic carrier particle is surface treated with a hydrophobized titania particle. The surface treatment with a hydrophobized titania particle may be selected from either a spherical, disk, or spindle shaped. Tribocharge of the toner and the toner charge stability across cartridge life or environments may be suitably modified by selecting a preferred size and shape of the hydrophobized titania.

A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles, wherein the magnetic carrier particle is surface treated with a hydrophobized titania particle. The surface treatment with a hydrophobized titania particle may be selected from either a spherical, disk, or spindle shaped. Tribocharge of the toner and the toner charge stability across cartridge life or environments may be suitably modified by selecting a preferred size and shape of the hydrophobized titania.

A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the polymer coated magnetic carrier particles with hydrophobized titania surface additives before the polymer coated magnetic carrier particles are mixed with the toner particles. The surface treatment with the hydrophobized titania surface additives can be either a spherical, disk, or spindle shaped.

A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the magnetic carrier particles with surface additives before the magnetic carrier particles are mixed with the toner particles. Surface additives include but are not limited to silica, titania and alumina.

A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having surface additives on its surface. Surface additives include but are not limited to silica, titania and alumina.