Abstract: A method of stably producing a toner is provided. This method provides a long-term stabilization of material dispersion in a colorant-dispersed solution and inhibits segregation of the material and provides a more microfine and more uniform dispersion of the colorant in the toner, and moreover produces a toner that has a sharp toner particle diameter distribution. This method of producing toner has at least a colorant dispersion step of obtaining a colorant-dispersed solution by dispersing a pigment-containing colorant in a liquid mixture that contains the colorant and a dissolved resin solution or a polymerizable monomer, wherein the liquid mixture contains a nonionic surfactant and the nonionic surfactant has at least an oxyalkylene group and has a hydrophile-lipophile balance value (HLB value) of 9.0 or more and 17.0 or less.

Abstract: A toner containing a binder resin, a colorant, and a releasing agent, wherein the colorant contains a mixed crystal of a C. I. PIGMENT YELLOW 185 and a C. I. PIGMENT YELLOW 139, and wherein a mass ratio of the C. I. PIGMENT YELLOW 185 to the C. I. PIGMENT YELLOW 139 (mass of the C. I. PIGMENT YELLOW 185/mass of the C. I. PIGMENT YELLOW 139) in the toner is 95/5 to 50/50.

Abstract: A method for producing toner particles by ejecting a liquid from at least one ejection hole to form the liquid into liquid droplets, and solidifying the liquid droplets to produce toner particles. The ejecting is accomplished by applying a vibration to the liquid in a liquid column resonance-generating liquid chamber in which an ejection hole is formed to form a standing wave through liquid column resonance, and ejecting the liquid from the ejection hole which is formed in a region corresponding to an antinode of the standing wave to thereby form the liquid into the liquid droplets. Toner produced by the method.

Abstract: A method for preparing a particulate image forming material such as toner, which includes providing a particulate material including a chain transfer agent; and contacting the particulate material with at least one of a supercritical fluid and a sub-critical fluid under pressure to remove the chain transfer agent from the particulate material. A toner prepared by the method. A toner container containing the toner. A developer including the toner. An image forming method including preparing an electrostatic latent image and developing the latent image with the developer. An image forming apparatus including an image bearing member configured to bear an electrostatic latent image, a developing device configured to develop the electrostatic latent image with the developer to form a toner image on the surface of the image bearing member, a transfer device, a fixing device, and a cleaner configured to clean the image bearing member.

Abstract: A toner containing a resin binder and a colorant, wherein the resin binder contains a crystalline resin and an amorphous resin, the crystalline resin containing a composite resin containing: a polycondensation resin component obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 10 carbon atoms, and a carboxylic acid component containing an aromatic dicarboxylic acid compound, and a styrenic resin component, and the amorphous resin containing a polyester obtained from an alcohol component containing an aliphatic diol in an amount of 60% by mol or more, and a carboxylic acid component. The toner of the present invention is suitably used in, for example, the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: To provide a toner for developing an electrostatic charge image, which is free from fogging even by means of a high speed and long operating life machine and which brings about no OPC filming or soiling of components. A toner for developing an electrostatic charge image, which contains at least a binder resin and a colorant, wherein the toner has silica particles satisfying at least the following (1) to (3) and particles having an electrostatic property antipolar to the silica particles: (1) the average primary particle diameter is at least 60 nm and at most 300 nm, (2) the moisture content is at most 1.0 mass %, and (3) the absolute specific gravity is at least 2.0 and at most 2.4.

Abstract: A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one amorphous polyester resin with an organic solvent to form a resin mixture, adding a neutralizing agent, and deionized water to the resin mixture, removing the solvent from the formed latex, separating the solvent from water, and recycling the solvent from the resin mixture for utilization in a subsequent phase inversion emulsion process.

Abstract: A toner containing: a core containing at least a first binder resin, a colorant, and a releasing agent; and a shell containing at least a second binder resin; wherein the toner has a core-shell structure, and has a softening index of 86° C. to 95° C. and a thermal hardness of 0.7 to 1.8.

Abstract: A compound that includes an aqueous dispersion, wherein the dispersion includes a thermoplastic resin and at least one stabilizing agent, and at least one selected from the group consisting of a colorant and a magnetic pigment, wherein the dispersion has an average volume diameter particle size from about 0.05 to about 10 microns is described.

Abstract: A toner which can efficiently induce high-frequency magnetic induction heating by Neel relaxation and/or Brown relaxation is provided. A toner including a core particle containing a thermoplastic polymer material and superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm which adhere to the surfaces of the core particle is manufactured by directly forming the superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm on the surfaces of the core particle so that the superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm are not in contact with each other. As a result, the toner is prevented from being scattered due to the influence of a magnetic field, so that a high quality image is formed.

Abstract: The present invention relates to a porous toner particle with encapsulated metallic flakes. The porous particle containing metallic flakes can be useful for reproduction of a metallic hue upon fusing to a substrate, preferably golden or silvery hue, and for manufacturing of printed circuits, by a printing process, especially electrophotography.

Abstract: A toner containing a fatty acid having 6 to 22 carbon atoms, and a binder resin, wherein the toner is obtained by a method for producing a toner, which contains dissolving or dispersing in an organic solvent the fatty acid having 6 to 22 carbon atoms, and a toner material containing at least the binder resin, so as to prepare a solution or dispersion liquid, emulsifying or dispersing the solution or dispersion liquid in an aqueous medium containing acrylic resin fine particles, so as to prepare an emulsion or dispersion liquid, and removing the organic solvent from the emulsion or dispersion liquid.

Abstract: The present disclosure relates to a binder resin system suitable for use in forming toner compositions. In embodiments, the binder resin system includes at least one amorphous resin, at least one crystalline resin, and at least one fatty acid salt. The presence of the fatty acid salt reduces plasticization which may otherwise occur upon combining the amorphous and crystalline resins, thereby increasing the glass transition temperature of the binder resin, as well as any toner produced with such binder resin. Toners produced with the disclosed binder resin may also include one or more optional ingredients such as optional colorants, optional waxes, and combinations thereof.

Abstract: A method for manufacturing a toner, including: dissolving or dispersing toner constituents including a resin, a colorant, a release agent, and a graft polymer including a polyolefin resin unit and a vinyl resin unit in a solvent, to prepare a toner constituent liquid; supplying the toner constituent liquid to a retention part configured to retain the toner constituent liquid; discharging the toner constituent liquid from the retention part to a granulation space through plural holes arranged on the retention part, while exciting the toner constituent liquid by a vibration means in contact with a part of the retention part, so that the discharged columnar toner constituent liquid is constricted to form liquid droplets; and converting the liquid droplets into solid toner particles; together with a toner manufactured by the above method.

Abstract: To provide a toner for developing an electrostatic charge image, the toner containing at least a colorant obtained by reacting a polymer with a basic dye, wherein the polymer contains 10 mol % or more of a monomer unit having any one of a sulfonic acid group, a sulfonic acid salt group, a sulfuric acid group and a sulfuric acid salt group as a constitutional unit, and the toner is obtained by forming a toner composition liquid containing at least the colorant into oil droplets in an aqueous medium, and solidifying the oil droplets into solid particles.

Abstract: Disclosed are a ferrite carrier core material for an electrophotographic developer including a ferrite particle having an apparent density of 2.30 to 2.80 g/cm3, a BET specific surface area of 0.09 to 0.70 m2/g and an average degree of circularity of 0.90 or more, wherein the Cl concentration of the ferrite carrier core material measured by an elution method is 0.1 to 100 ppm, a ferrite carrier for an electrophotographic developer obtained by coating the surface of the ferrite carrier core material with a resin, and methods for producing the ferrite carrier core material and the ferrite carrier, and an electrophotographic developer using the ferrite carrier.

Abstract: Provided is a method for producing a toner including the steps of: preparing a resin liquid by mixing at least a binder resin made of polyester resin and a colorant with an ester organic solvent represented by the following general formula (1); dispersing the resin liquid in an aqueous medium to form an emulsion; and removing the ester organic solvent from the emulsion to produce a toner, in which the ester organic solvent before the preparation of the resin liquid contains water in an amount of not less than 1% by weight and up to the saturation solubility at 25° C. to the ester organic solvent: (in which R1 is a hydrogen atom or a methyl group, and R2 is an alkyl group having 1 to 4 carbon atoms).

Abstract: The present invention relates to a releasing agent dispersion for toner including a releasing agent, and a dibasic acid containing an alkyl group and/or an alkenyl group or a salt of the dibasic acid, wherein at least one acid group of the dibasic acid is a carboxyl group; and a toner for electrophotography which is produced by aggregating and unifying releasing agent particles and resin particles contained in a dispersion produced by mixing or contacting the releasing agent dispersion with a resin dispersion. The releasing agent dispersion for toner according to the present invention has a good emulsifiability and a good emulsification stability, and is capable of producing a toner which is excellent in productivity and low-temperature fixing property.

Abstract: A toner, including a parent particulate material including a colorant and a binder resin, and an external additive including particles having an average primary particle diameter from 80 to less than 150 nm in an amount of from 0.03 to 2% by number, particles having an average primary particle diameter from 5 nm to less than 15 nm in an amount of from 50 to 95% by number, and particles having an average primary particle diameter from 15 to less than 40 nm in an amount of from 5 to 40% by number, and the particles having an average primary particle diameter from 80 to less than 150 nm include particles having an average primary particle diameter not less than 200 nm in an amount of from 10 to 30% by number, and have a weight reduction rate not greater than 3.00% when heated from 30 to 250° C.

Abstract: There is provided a toner for developing a latent electrostatic image, obtained by a method containing: ejecting a toner composition fluid from an ejection hole so as to make the toner composition fluid into droplets; and solidifying the droplets in an atomizing space so as to form solid particles, wherein the toner composition fluid contains at least a colorant formed by reacting a polymer containing 10 mol % or more of a monomer unit having a sulfonic acid group or a salt thereof, or a monomer unit having a sulfuric acid group or a salt thereof as a constitutional unit, and a basic dye.

Abstract: A toner for developing an electrostatic image is provided. The toner includes at least a binder resin; a colorant; and a particulate release agent. The particulate release agent is prepared by heating the release agent to a temperature not lower than a melting point of the release agent to melt the release agent, dissolving the melted release agent in a supercritical fluid or a sub-critical fluid, and feeding the solution into a liquid so that the solution is depressurized and the particulate release agent is formed in the liquid.

Abstract: An electrostatic image developing toner includes a binding resin and a release agent, wherein an organic silicon compound including a siloxane bond is present in a domain of the release agent.

Abstract: An electrostatic-image-developing toner includes a phosphonic acid based sequestering agent.

Abstract: A hydrophobilization method is disclosed, comprising subjecting particles to a hydrophobilizing treatment in an aqueous medium with a hydrophobilizing agent to hydrophobilize surfaces of the particles, wherein the surfaces of the particles are hydrophobilized with the hydrophobilizing agent in the presence of a phase transfer catalyst.

Abstract: A method for preparing a toner including toner particles is provided. The toner preparation method includes preparing a toner component liquid including at least a binder resin, a colorant and an organic solvent; mixing a resin A having a solubility of less than 2.0 g/100 g in water having a pH of 3.0 at 25° C. while having a solubility of not less than 2.0 g/100 g, a basic material, and water to prepare an aqueous phase liquid, in which the resin A is dissolved; forming droplets of the toner component liquid in the aqueous phase liquid; and removing the organic solvent from the droplets of the toner component liquid to prepare the toner particles.

Abstract: The present disclosure relates to a toner process comprising providing a resin miniemulsion comprising polymeric particles comprising at least one free radical polymerizable monomer compound and at least one alkylene anhydride; blending the miniemulsion with at least one colorant, at least one amine, and optionally at least one wax; heating the resulting mixture below or about equal to the glass transition temperature (Tg) of the resin emulsion; and heating the resulting mixture above or about equal to the glass transition temperature (Tg) of the resin emulsion.

Abstract: A resin binder for use in a toner for electrophotography, containing a polycondensation resin obtainable by polycondensing an alcohol component containing an aliphatic polyhydric alcohol having two or more secondary carbon atoms with a hydroxyl group bound thereto (an alcohol A), and a carboxylic acid component, wherein the alcohol A is contained in an amount of from 10 to 100% by mol, of the alcohol component; and a toner for electrophotography containing the resin binder. The toner for electrophotography of the present invention is suitably used in developing latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A compound that includes an aqueous dispersion, wherein the dispersion includes a thermoplastic resin and at least one stabilizing agent, and at least one selected from the group consisting of a colorant and a magnetic pigment, wherein the dispersion has an average volume diameter particle size from about 0.05 to about 10 microns is described.

Abstract: The present disclosure provides toners having a tunable gloss level, electrophotographic apparatuses for using such toners as well as processes for making such toners.

Abstract: The present invention provides an electrostatic image developing toner capable of improving the dispersibility of wax in the toner and superior in offset resistance and in storageability (heat-resistant storageability) at high temperatures, and a two-component developer which uses this electrostatic image developing toner. The electrostatic image developing toner includes: a binder resin, a colorant, and a release agent, wherein the binder resin contains a polyester resin, and a block copolymer which has a polyolefin backbone unit.

Abstract: A tube reactor having a substantially tubular body portion including a conical section, an entry port, an opposing exit port, and an axis extending between the ports through the body portion. The tubular body portion being rotatable about the axis. At least one reactant can be fed into the tubular body portion and directed toward the conical section. An inner surface of the tubular body portion receives the reactants from the conical section, and processes the reactants. An insert may be positioned within the tubular body portion to further process the reactants along the inner surface. A rotating reservoir having a damper can be coupled to the rotating tubular body portion. The damper receives the processed reactants from the inner surface of the tubular body portion, and guides the processed reactants into the rotating reservoir to minimize turbulence. The rotating reservoir then separates the processed reactants by density.

Abstract: A method for producing a toner, including: dispersing toner particles containing at least a binder resin in a first aqueous medium so as to produce an aqueous dispersion; and subjecting the aqueous dispersion to heat treatment, wherein the electric conductivity of the aqueous dispersion after the heat treatment is higher than the electric conductivity of the aqueous dispersion before the heat treatment by 50 ?S/cm or less.

Abstract: According to one embodiment, there is provided a developing agent including a toner particle containing a coloring agent, a binder resin and an ester wax having an alkyl group having a carbon number of from 32 to 46. When the wax is analyzed by an mass spectrometry, an ester compound having a carbon number showing the maximum strength ratio accounts for from 20 to 45% by mass of the whole of the wax.

Abstract: The present disclosure provides methods for incorporating a dye into latex particles via a supercritical fluid microencapsulation technique, in order to achieve improved dispersion of a colorant in the latex and an increase in color gamut.

Abstract: A method of manufacturing toner including: preparing a first liquid by dissolving or dispersing toner components including a colorant, a release agent, and one or both of a binder resin and a precursor thereof in an organic solvent; preparing a second liquid having a viscosity of from 50 to 800 mPa·sec when measured with a Brookfield viscometer at a revolution of 60 rpm and a temperature of 25° C., by emulsifying the first liquid in an aqueous medium; and evaporating the organic solvent from the second liquid by flowing down the second liquid as a liquid film from a supply part along an inner wall surface of a pipe depressurized to 70 kPa or less in substantially a vertical direction, and heating the liquid film at not higher than a glass transition temperature of the binder resin by contact with the inner wall surface of the pipe in a heating part. A heat insulating part is provided between the supply part and the heating part.

Abstract: The present invention provides a toner containing base particles formed by emulsifying or dispersing, in an aqueous medium, a toner composition liquid which is obtained by dissolving or dispersing, in an organic solvent, at least a binder resin soluble in the organic solvent and a colorant masterbatch containing a colorant and a colorant dispersion resin, wherein the colorant dispersion resin is a resin having sparing solubility defined below: where the “sparing solubility” means that when 4 parts by mass of the colorant dispersion resin are added to and mixed with 10 parts by mass of the organic solvent, the mixture becomes white turbid at 25° C. or becomes a transparent solution once at 25° C. and then becomes white turbid within 12 hours.

Abstract: A method for producing a developing agent including heating a dispersion of a toner particle material containing a binder resin fine particle, a coloring agent particle and a dispersion medium at a temperature of a glass transition point of the binder resin or higher and adding a coagulating agent in the heated dispersion of a toner particle material to coagulate a toner material containing the binder resin fine particle and the coloring agent particle, thereby forming a coagulated particle is disclosed.

Abstract: A process for making toner particles comprising: (a) forming an emulsion comprising a disperse phase including a first aqueous composition and a continuous phase including molten one or more ingredients of a toner composition, wherein there is absent a toner resin solvent in the continuous phase; (b) performing a phase inversion to create a phase inversed emulsion comprising a disperse phase including toner-sized droplets comprising the molten one or more ingredients of the toner composition and a continuous phase including a second aqueous composition; and (c) solidifying the toner-sized droplets to result in toner particles.

Abstract: The present invention provides a process for producing a colored toner comprising the steps of: providing a polymer composition comprising at least one polymer wherein the at least one polymer has a softening temperature from about 30° C. to about 160° C.; and a colorant; forming an aqueous mineral suspension of at least one multivalent metal phosphate by contacting a water-soluble salt of the multivalent metal with an aqueous solution comprising: a water-soluble phosphate salt; and at least one crystal growth inhibitor which controls the growth of the at least one multivalent metal phosphate, wherein the pH of the aqueous mineral suspension is from 5.5 to 14; and forming a dispersion of the polymer composition by adding the polymer composition to the aqueous mineral suspension under agitation to form a solid portion comprising dispersed particles of the polymer composition, wherein the temperature of the aqueous mineral suspension during the dispersing step is at least about 70° C.

Abstract: The present invention provides a toner including: a colorant, and a binder resin, wherein the toner is fixed on a recording medium using a fixing liquid containing a softening agent for softening the toner, and wherein a weight average molecular weight of a THF soluble fraction of the toner in a molecular weight distribution measured by gel permeation chromatography (GPC) is 3,000 to 8,300; and a glass transition temperature of the toner measured by differential scanning calorimetry (DSC) is 50° C. to 70° C.

Abstract: A process for making particles is provided. In embodiments, a suitable process includes a mixing tank for mixing a plurality of particles dispersed within a liquid media and a vane unit for applying a swirling effect to the plurality of droplets received from the mixing tank through a spray nozzle. The vane unit is in operable communication with a spray nozzle for launching a plurality of droplets, the plurality of droplets including different combinations of the plurality of particles. The process further includes a plurality of outlet ports, where each of a first set of outlet ports includes a filter and of the other outlet port is filterless.

Abstract: A toner obtained by a toner production method which includes dissolving or dispersing in an organic solvent a toner material containing at least a calixarene derivative and a binder resin or a binder resin precursor, to thereby prepare a solution or dispersion liquid of the toner material, adding the solution or dispersion liquid to an aqueous medium for emulsification or dispersion, to thereby prepare an emulsion or dispersion liquid, and removing the organic solvent from the emulsion or dispersion liquid.

Abstract: A process for making particles is provided. In embodiments, a suitable process includes a mixing tank for mixing a plurality of droplets dispersed within a liquid media. The process further includes a drop ejector controlling unit in operable communication with a drop ejector array for launching a plurality of droplets, the plurality of droplets including the plurality of particles, and an outlet port for receiving the plurality of droplets.

Abstract: A coarse particle containing a polyester based resin and a coloring agent is added in an aqueous medium containing a surfactant, a basic substance and an inorganic water-soluble electrolyte, and dispersion and coagulation are carried out to form a toner particle.

Abstract: A method for treating an electrophotographic carrier, including treating, with supercritical pure water, the electrophotographic carrier containing at least a core material and a coating layer, so that the coating layer is separated from the core material, wherein the supercritical pure water is obtained by bringing, into a supercritical state, pure water having an electrical conductivity at 25° C. of 1 ?S·cm or lower.

Abstract: A method of making polymeric particles having a controlled size and size distribution, and in particular a method for the preparation of chemically prepared toners, via evaporative limited coalescence process, wherein basic silicate salts are employed to remove particulate stabilizer from precipitated polymer particles. The process includes the steps of dispersing polymeric binder materials and optional additives in an organic solvent to form an organic phase. The organic phase is dispersed by high shear agitation in an aqueous phase containing a particulate stabilizer, e.g. colloidal silica, to form a dispersion of small droplets of the organic phase in the aqueous phase. The dispersion is homogenized and the organic solvent is removed from the dispersed particles in the dispersion by evaporation, and polymeric particles are precipitated with particulate stabilizer on the surface thereof, which are then recovered, treated with a basic silicate salt to remove particulate stabilizer, and washed and dried.

Abstract: The invention relates to a dry toner, containing a platelet-type metal effect pigment or a plurality of platelet-type metal effect pigments and at least one resinous constituent, wherein the metal effect pigment or the metal effect pigments is/are additionally provided with a coating preferably suitable for improving the mechanical stability, and that this coating is additionally modified with at least one organic layer, which organic layer is selected from the group consisting of organofunctional silanes, organofunctional titanates, organofunctional zirconates, phosphonic acids, and phosphonates. The invention further relates to processes for the production of the dry toner and to the use thereof. Furthermore, the invention relates to a toner cartridge and to printed products.

Abstract: The present disclosure provides for enzymatic polymerization to produce polyester resins suitable for use in manufacturing toners. In embodiments, crystalline copolymers, which are polyesters, may be synthesized from lactones, cyclic anhydrides, cyclic carbonates, and combinations thereof. These crystalline copolymers, in turn, may be utilized in the synthesis of toner particles.

Abstract: The present invention is toner particle that includes a continuous phase of binder polymer and a second phase of hydrocolloid. The particle has a porosity of at least 10 percent.

Abstract: An objective is to provide a carrier exhibiting stable charge providing ability in which sufficient charge can be provided to toner having a small particle diameter, and no image contamination such as fog caused by toner scattering via lack of electrification is generated. Another objective is to provide a carrier capable of maintaining a charging level of no interference for image formation even under the image forming condition at which a charging level for printing a number of prints continuously is difficult to be maintained. Disclosed is a carrier comprising a core particle made of ferrite possessing Mg and coated thereon, a resin, wherein the core particle has a ratio of the number of irregular-shaped core particles of at most 5%, based on the total number of core particles, and a surface of the core particle has grains having a maximum grain diameter of 2-5 ?m.