Abstract: A toner composition includes a binder, a colorant, and a surface additive package including a polydimethylsiloxane surface treated silica, a surface treated titania, and calcium sterate. The toner composition provides improved triboelectric charging properties.

Abstract: A waste toner reclamation process includes collecting waste toner, screening the collected waste toner, meltmixing the screened waste toner with a second toner, and extruding, grinding and classifying the mixed toner product, wherein the collected waste toner comprises a mixture of different colored toner particles.

Abstract: The invention provides metal oxide particles surface-treated with at least one alkoxysilane compound, methods of making such, and toners comprising same.

Abstract: The present invention relates to methods of drying and recovering toner particles from a liquid carrier. The methods are very effective to generate discrete, substantially non-agglomerated dry toner particles in a manner that preserves the particle size and particle distribution of the wet particles. The resultant dried toner particles free-flowing with a relatively narrow particle size distribution. The present invention uses electrical phenomena to help transfer charged toner particles from a liquid carrier onto a substrate surface. In practical effect, the particles are electrically plated onto the surface. Because the resultant coating has a relatively large drying surface area per gram of particle incorporated into the coating, drying may occur relatively quickly under moderate temperature and pressure conditions. After drying, the dried toner particles are readily recovered and may then be used in dry or even wet toners for electrophotographic applications.

Abstract: To provide a method including processing electrophotographic toner constituent material to a fibrous fine precursor and pulverizing and cutting it to obtain a uniform fibrous toner with energy efficiency in an apparatus for producing electrophotographic toner including a nozzle unit containing a nozzle having a flow path tapering toward the nozzle hole at 2° to 20° and a gas nozzle unit containing a gas nozzle and gas flow path tapering toward the nozzle hole at 15° to 33° relative to a direction of a nozzle axis, wherein the toner constituent material containing a raw material A containing a resin and pigment, and a raw material B containing one of a low melting point resin, wax and organic solvent, is extruded from the nozzle at 150° C. to 320° C., and drawn by gas flow from the gas nozzles so as to be a fibrous fluid while controlling the flow rate.

Abstract: A toner composition is provided which contains a polyester resin with hydrophilic groups and hydrophobic end groups and a colorant, wherein said polyester resin is of the formula: wherein R is an alkylene group; X is an aromatic hydrocarbon; Y is selected from the group consisting of an alkali and an alkaline earth metal salt of an arylenesulfonate or an alkylenesulfonate; R? is a hydrophobic group, and m and n represent the number of random segments of from about 50 to about 300 for n, and from about 20 to about 2,000 for m, and m is less than 20 times n.

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 pulverized starting material is supplied quantitatively from a quantitative feeder 1 to a first mechanical pulverizer 2 where the material is pulverized moderately, the resulting moderately pulverized material is supplied quantitatively from a quantitative feeder 3 to a second mechanical pulverizer 4 where the material is finely pulverized, and the resulting finely pulverized material is introduced into a coarse-powder classifier 5 to classify coarse powder not smaller than a predetermined particle diameter. The finely pulverized material from which the coarse powder was removed by classification is further classified fine powder not larger than a predetermined size by a fine-powder classifier 7 to produce a classified product, while the separated classified coarse powder is introduced into a returning-powder feeder 6.

Abstract: There is provided a toner which can be manufactured in a simple production method and which is excellent in preservation stability and anti-offset property with uniformly-charging performance. The toner is formed of aggregate of resin-containing particles which are obtained by forming amorphous resin particles into slurry and further finely granulating the amorphous resin particles in form of the slurry followed by aggregation of the amorphous resin particles and which contains a binder resin, a colorant, a release agent, and a release agent-dispersing aid, the resin-containing particles having a volume average particle diameter in a range of from 0.4 ?m to 1.0 ?m.

Abstract: A toner, which is semispherical and has plural dents on the surface, including a binder resin; and a pigment, wherein a circle circumscribing a circular profile of the toner provides an average envelopability (AE) of 10 to 10,000 particles thereof of from 74 to 84%, which is measured by the following formula: AE(%)=(AC?AD)/AC×100 wherein AC is an area of the circle and AD is a total sum of areas of the dents.

Abstract: A method of producing a custom color particulate toner for use in a two-component developer by mixing two or more component color toners. The component color toners are each surface treated with a blend of two or more types of silica particles, which differ in the functional groups appended to them. The silica blend for each component color toner is chosen so that, when the component color toners are mixed together to form the custom color mixture, they will all tribocharge to the same charge-to-mass ratio when mixed with a carrier to form a developer.

Abstract: A method for the preparation of electrostatographic toner comprising the steps of: a) dissolving a polymer material and a quaternary ammonium tetraphenylborate salt in an organic solvent to form an organic phase; b) dispersing the organic phase in an aqueous phase comprising a particulate stabilizer to form a dispersion and homogenizing the resultant dispersion; c) evaporating the organic solvent and recovering a resultant product; and d) washing and drying the resultant product.

Abstract: A carrier coating that may be used to coat carrier particles, including a specific additive that imparts the coating with superior storage stability and wherein the carrier coating includes an acrylic-based polymeric powder obtained from an emulsion of an acrylic-based polymer, a surfactant, a cationic initiator, and a conductive filler.

Abstract: The present invention provides a method for the preparation of a UV curable electrostatographic toner. The process includes the steps of dispersing a polymeric material and a UV curable material and a UV photoinitiator in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase containing a particulate stabilizer to form a dispersion. The dispersion is homogenized and the organic solvent is removed from the dispersed particles in the dispersion which are then recovered.

Abstract: A negatively chargeable toner containing: resin particles containing a colorant; and an external additive which coats the surface of the resin particles, wherein the external additive contains; first silica particles having a number mean primary particle size of 5 to 20 nm and second silica particles having a number mean primary particle size of 30 to 50 nm; surface-modified silica particles which are surface modified by wet treatment using an oxide or hydroxide of at least one metal selected from the group consisting of titanium, tin, zirconium and aluminum, and are further subjected to hydrophobic treatment; and aluminum oxide-silicon dioxide composite oxide particles obtained by flame hydrolysis and hydrophobic treatment.

Abstract: The present invention relates to the use of salt-like structured silicates, in which the cation is NH4+, H3O+, an alkali metal, alkaline earth metal, earth metal or transition metal ion or a low molecular weight organic cation or a combination thereof and the anion is an island, cyclic, group, chain, ribbon, laminar or matrix silicate or a combination thereof as charge control agents in electrophotographic toners and developers, in powder coatings, electret materials and in electrostatic separation processes.

Abstract: A toner is provided manufactured by a method including mixing a particulate porous cross-linked resin having pores on a surface thereof and a volume average particle diameter of from 15 to 50 ?m with a pre-toner including a colored particulate material comprising a binder resin, a colorant, and a release agent and an external additive, and removing the particulate porous cross-linked resin; along with a method for manufacturing the above toner, and a developer, an image forming method, an image forming apparatus, and process cartridge using the toner.

Abstract: A toner composition comprising a binder, colorant, and a charge control surface additive mixture comprising a mixture of a first titanium dioxide possessing a first conductivity and a second titanium dioxide possessing a second conductivity and which second conductivity is dissimilar than the first conductivity; wherein the mixture of the first titanium dioxide and the second titanium dioxide is selected in a ratio sufficient to impart a selected triboelectric charging characteristic to the toner composition.

Abstract: A process for manufacturing a toner having improved relative humidity sensitivity is described. The process comprises forming polyester toner particles by emulsion/aggratation, fluidizing the toner particles with a stream of inert gas while spraying the toner particles with a solution containing an additive affecting relative humidity sensitivity, and wherein the additive contacts a surface of the toner particles and the additive remains on the surface of the toner particles.

Abstract: A toner composition including a binder, a colorant, and a surface additive package including a surface treated silica, a surface treated titania, and magnesium stearate.

Abstract: Disclosed is a production method of an electrophotographic toner, which comprises toner particles comprising a resin and a colorant. The method comprises a step of forming toner particles in an aqueous medium, and processing an aqueous medium containing the toner particles or a component of the toner particles by gas bubbles.

Abstract: A ferrite carrier for an electrophotographic developer having a compression breaking strength of 150 MPa or more, a rate of compressive change of 15.0% or more and a shape factor SF-1 of 100 to 125, a method for producing the same, and an electrophotographic developer containing the ferrite carrier.

Abstract: A kneaded material obtained by heating and melt-kneading a toner composition and a water-based medium containing water are put into a container of a granulating apparatus, and heated by a heater while agitating, to disperse the kneaded material into the water-based medium in its softened state. A temperature at which a loss tangent value of the kneaded material reaches a predetermined loss tangent value A, specifically, 0.5 or more and less than 5.0, is inputted to a granulating temperature input section as a setting granulating temperature T1. The heater is then controlled by a control section so that a granulating temperature as a temperature of the water-based medium measured by a thermometer reaches the setting granulating temperature T1 inputted to the input section. Accordingly, the granulating temperature as a temperature of the water-based medium, and thus a temperature of the kneaded material in the water-based medium is adjusted to T1.

Abstract: A process for preparing toner compositions using a dry pigment is provided. The process comprises combining a base toner resin composition, a dry pigment, and dispersion agent in a one step process, without the need any pre-processing of the pigments such as by, for example, flushing. The process includes combining the base toner resin, dry pigment and dispersion agent in a processing apparatus such as an extruder. The process may also comprise preparing the toners via an extrusion process utilizing a screw having a configuration designated herein as a Type C screw.

Abstract: The present invention provides an image supporting material for fixably supporting a color toner image, the material including a base material, a light scattering layer provided on the base material and containing a white pigment and a thermoplastic resin, and a color toner receptive layer provided on the light scattering layer and containing at least a thermoplastic resin, wherein the thermoplastic resin in the light scattering layer is constituted of a polyolefin or a polyolefinic copolymer having a temperature, at which viscosity becomes 5×103 Pa·s, of 100° C. or higher, and the thermoplastic resin in the color toner receptive layer is constituted of a resin obtained by melt mixing of a crystalline polyester resin and an amorphous resin and having a temperature, at which viscosity becomes 103 Pa·s, equal to or higher than 65° C. but lower than 80° C.

Abstract: Cross-linked type organic fine particles are used as organic fine particles having a core-shell structure to be attached to a base particle, and the cross-linking degree of the core part is made higher than that of the shell part. A toner is manufactured by mixing cross-linked type organic fine particles having a core-shell structure with a solution containing a neutralizer, dispersing a composition for forming a base particle, which contains a releasing agent and a colorant, into the solution in which the organic fine particles are mixed, and separating the composition from the solution.

Abstract: The invention provides a toner for electrostatic latent image development comprising a first component and a second component which are isolated from each other and capable of forming a color when the first component and the second component are brought into reaction with each other, and a photo-curable composition containing either the first component or the second component, the photo-curable composition not being capable of forming a color when the photo-curable composition is not cured, that is irreversibly controlled to a state of being capable of forming a color by irradiating light having a specific wavelength at which the photo-curable composition is cured.

Abstract: The object of the present invention is to provide a toner which has sufficiently high chargeability and less toner spent to a carrier or the like even when several tens of thousands of image sheets are output, is capable of keeping high-charge property and flowability without causing substantial background smear or toner fogging, excels in low-temperature fixing property and hot-offset property, and has a wide range of fixing temperature as well as to provide a developer, an image forming apparatus, a process cartridge, and an image forming method using the toner for developing electrostatic images. The toner of the present invention comprises a colorant, and a resin, and a fluoride compound, in which the fluoride compound exists on the surfaces of toner particles, and the atomic number ratio (F/C) of fluoride atoms to carbon atoms existing on the surfaces of the toner particles is 0.010 to 0.054.

Abstract: An apparatus for producing toner for developing an electrostatic latent image, is provided with an inlet section to receive a slurry containing toner particles, impure fine particles having a specific gravity smaller than that of the toner particles and aqueous medium; a centrifugal concentrating device for applying centrifugal force to the slurry and having a precipitating plate with which the toner particles are precipitated from the slurry and an accommodating section to accommodate a concentrated slurry containing the precipitated toner particles, and an outlet section to deliver impure fine particles and aqueous medium.

Abstract: A method of preparing a nonmagnetic one-component pulverized color electrophotographic developer, includes: preparing a master batch by melt-kneading at least two binder resins and wax; and melt-kneading a mixture of the master batch, a colorant, and a charge control agent. According to the method, paper jams can be decreased and a toner having wide fixing margin can be obtained by preventing wax from being dispersed mainly in a resin having a similar melting property as wax during melt-kneading to prepare a toner. An electrophotographic developer prepared using the method can prevent image contamination and developing member contamination. Also, the electrophotographic developer can guarantee wide fixing margin of the toner, and thus can be efficiently used in an electrophotographic image forming apparatus.

Abstract: The invention relates to color toner compositions prepared from an aqueous pigment concentrate dispersion which renders a toner exhibiting improved pigment dispersion, and consequently improved image density and color characteristics.

Abstract: The invention relates to color toner compositions prepared from a process for the preparation of a dry toner powder from an aqueous pigment concentrate dispersion comprising: blending at least an aqueous-based pigment concentrate dispersion and a resin to produce a paste; charging the paste to an extruder to generate an extruded pigment/resin mixture; dispersing the extruded pigment/resin mixture in a low boiling organic medium to create an organic phase; dispersing the organic phase in an aqueous phase containing a particulate stabilizer and mixing the organic phase and the aqueous phase at elevated temperature and under shear force to form toner particles of a controlled size and shape; removing the organic solvent and particulate stabilizer from the formed particles; and washing, drying, and collecting the particles for use as a dry toner powder.

Abstract: A powder is de-aerated in a collector and then transferred to a chamber via a valve. The chamber may then be injected with a low-pressure air stream carrying an additive for mixing with the de-aerated powder. The mixing of the powder with the air and additive stream may occur in the valve and/or chamber. After mixing of the powder with the air and additive stream, the mixed powder and additive may be further mixed in the chamber and/or second valve prior to transferring the mixed powder and additive to a holding container or other processing device.

Abstract: A method for producing a toner including dissolving or dispersing a toner constituent mixture including a binder resin and a colorant in an organic solvent to prepare a toner constituent mixture liquid; dispersing the toner constituent mixture liquid in an aqueous medium including a particulate dispersant to prepare an emulsion; and removing the organic solvent from the emulsion while applying a shearing force to the emulsion. A toner manufactured by the method and having a spindle form while satisfying specific particle diameter relationships. An image forming apparatus using the toner. A toner packing method and device in which the toner is fluidized and pressurized to be fed from a fluidizing container to a toner container on which a gas-powder separation sieve is set to discharge air therefrom.

Abstract: A system and a method for printing a secure document that is difficult to forge and readily easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document, a dye for forming a latent version of the image underneath the surface, a substrate, and a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration agent may be coated onto a portion of the substrate or embedded within the substrate. An ink may serve as the migration agent, in which case, the ink contains a solute for the dye.

Abstract: A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image. In addition, if a solvent is used in an attempt to alter the printed image on the substrate, the dye migrates or diffuses to indicate tampering with the document.

Abstract: The present invention provides a toner containing toner mother particles containing a binder resin and a colorant having added thereinto external additives, e.g., positively electrifiable silica fine particles, negatively electrifiable silica fine particles, titanium oxide fine particles and a long chain fatty acid or a salt thereof, wherein the external additives are added by multistage process, thereby is low in desorption of external additives, has the electrification property for a long period of time, shows high flowability and transfer efficiency, and is not accompanied by the reduction of image density.

Abstract: Negatively charged coated toner particles are provided that comprise a polymeric binder particle and a coating material. The coating material comprises at least one visual enhancement additive coated on the outside surface of the polymeric binder particle. Electrographic toner compositions comprising these particles, and methods of making these particles particularly by magnetically assisted impact coating processes are also provided.

Abstract: A construct that comprises a base material and a polyhydroxyalkanoate, wherein at least a part of the base material is coated with the polyhydroxyalkanoate, and the polyhydroxyalkanoate comprises a 3-hydroxyalkanoic acid unit other than 3-hydroxypropionic acid unit, 3-hydroxy-n-butyric acid unit, and 3-hydroxy-n-valeric acid unit. In addition, an electrostatic charge image developing toner allows to design the toner characteristics such as chargeability, flowability, stability in time and environmental stability uniform among the toners of different colors. The toner has a small particle size enough for enabling uniform dispersion and being excellent in color saturation and transparency. The toner also shows higher contribution to the environmental security. The toner includes a coloring agent of which at least a part of the surface is covered with polyhydroxyalkanoate (PHA).

Abstract: A toner and to a method for producing a plastic toner, especially for electrophotography. The base material for the toner, a powder for powder coating, is used and has a grain size distribution of from 1 to 20 ?m, particularly 5 to 15 ?m, and has additional charge control agents and additives on the surface. According to the method, convected powders for powder coating are used as the base material. In a mixing step, the powders are mixed with charge control agents (CCA) for improving surface charge and optionally in a further mixing step with additives for improving the flow properties, the adhesive power and the agglomeration propensity.

Abstract: A toner manufacturing process capable of providing a toner with uniform charge amounts. A mixture of a synthetic resin having an acidic leaving group and a coloring agent as essential components is emulsified in an aqueous solution to produce synthetic resin particles containing the coloring agent. If desired, the resin particles are further aggregated to form aggregated resin particles. The synthetic resin particles are then separated, washed and dried. The washing of the toner particles is conducted using a washing water prepared by dissolving carbon dioxide in water with a conductivity of not more than 20 ?S/cm.

Abstract: The present invention provides a method for producing a toner, which produces a toner by using a dispersion comprising a dispersion medium having finely dispersed therein a dispersoid containing a raw material for the production of a toner, the method comprising intermittently ejecting the dispersion from a head unit by applying an ejection energy, and solidifying it into a particulate form while transporting the ejected dispersion through a solidification unit by an air flow. The ejection energy may be applied in the form of pressure pulse, or may be applied by the volume change of a bubble. Also disclosed are a toner obtained by the method, and an apparatus for performing the method.

Abstract: The present invention relates to amphipathic copolymeric binder particles chemically grown in a substantially nonaqueous liquid carrier to form an organosol. The invention also pertains to dry particulate electrographic toners incorporating an organosol comprising an amphipathic copolymer wherein the amphipathic copolymer incorporates one or more S portions and one or more D portions. Methods of making dry electrophotographic toner particles, and methods of electrographically forming an image on a substrate using these toners, are also described. Preferably, fluidized drying techniques are used to form the dry toner particles from the organosol.

Abstract: A toner composition includes a thermoset resin, cross-linking agent, and optionally additives such as colorants. The thermally cross-linkable toner composition may be fixed, using standard fusing systems, to yield images that withstand rigorous processing conditions, such as, for example, the high temperatures reached in flexible packaging processes.

Abstract: In an electrophotographic apparatus, which forms a color image by transferring a plurality of toner images having different colors onto an image-receiving sheet so as to be stacked and fixed thereon, even in the case of carrying out an oil-less fixing process and allowing the process speed to vary within wide range, the present invention provides a binder resin, toner and an electrophotographic apparatus which make it possible to achieve both superior fixing property and anti-offset property, and consequently to form a color image with high color reproducibility and high quality.

Abstract: A toner including a thermoplastic resin; a colorant; a wax; and a crystalline polymer, wherein a DSC endothermic peak temperature of the wax or the crystalline polymer determined by subjecting the toner to a differential scanning calorimetric analysis is lower by not less than 2° C. than a DSC endothermic peak temperature thereof determined when only the wax or the crystalline polymer is subjected to the differential calorimetric analysis.

Abstract: A polyhydroxyalkanoate characterized by having in the molecule a unit represented by Chemical Formula (1): wherein n may assume any one integral value within the range of from 1 to 8. Also disclosed are a process for producing the polyhydroxyalkanoate by the use of a microorganism having the ability to produce the polyhydroxyalkanoate and accumulate it in the bacterial body; a charge control agent, a toner binder and a toner which contain this polyhydroxyalkanoate; and an image-forming method and an image-forming apparatus which make use of the toner.

Abstract: A method of producing a toner composition, including stirring and mixing toner particles comprising a binder resin, a colorant and a release agent with a charge controlling agent in a fluidizing and stirring mixer comprising a rotor having a stirring blade to fix the charge controlling agent on a surface of the toner particles, wherein the stirring and mixing comprises rotating the rotor at a peripheral speed of from 65 to 120 m/s at an environmental temperature (T) in the fluidizing and stirring mixer, satisfying the relationship,Tg-10>T>Tg-35(° C.), where the Tg represents a glass transition temperature of the binder resin.

Abstract: The present invention relates to the use of polyolefin waxes which have been prepared by means of metallocene catalysts and have been modified to make them polar in photocopier toners and also to photocopier toners comprising such polyolefin waxes modified to make them polar.

Abstract: A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath the surface and a substrate that includes a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration-enhancing agent may be coated onto a portion of the substrate or embedded within the substrate.