Entries |
Document | Title | Date |
20080206663 | Chemically Prepared Toner and Process Therefor - The present disclosure relates to chemically processed toner that makes use of aqueous dispersions of release agent and/or pigment and solutions of a polymeric resin binder. The polymer solution may be prepared in an organic solvent wherein the organic solvent has some level of solubility in water. The polymer solution may then be combined with an aqueous dispersion of pigment and/or release agent which dispersions may include an aqueous polyelectrolyte and/or an aqueous dispersion of colloidal particles. This may be followed by agglomerating and forming particles of toner of a desired number and/or volume average particle size and/or degree of circularity. | 08-28-2008 |
20080213683 | Toners For Electrostatic-Image Development - To provide an emulsion polymerized agglomerated toner for electrostatic charge image which is excellent in the fixing property even at a high temperature without deteriorating other properties and which does not emit an odor offensive to people, and a process for its production. | 09-04-2008 |
20080268362 | HYDROPHOBIC SPHERICAL SILICA MICROPARTICLES HAVING A HIGH DEGREE OF FLOWABILITY, METHOD OF PRODUCING SAME, ELECTROSTATIC IMAGE DEVELOPING TONER EXTERNAL ADDITIVE USING SAME, AND ORGANIC RESIN COMPOSITION CONTAINING SAME - Hydrophobic spherical silica microparticles are provided. The microparticles are obtained by subjecting hydrophilic spherical silica microparticles obtained by subjecting a tetrafunctional silane compound and/or a partial hydrolysis-condensation product thereof to hydrolysis and condensation, to a two stage hydrophobic treatment introducing R | 10-30-2008 |
20090011352 | Process for preparing novel composite imaging materials and novel composite imaging materials prepared by the process - The invention relates to a versatile process for preparing composite powders that can be used as novel electrostatic charge control agents, dry or liquid toners, and specialty imaging materials. The process involves impregnating specific sized, porous, inorganic core particles with chemical compositions that include one or more polymers or waxes and at least one additional chemical chosen from dyes, pigments, carbon black, inorganic chemicals or organic chemicals. The impregnated core may optionally be coated with additional components to produce a core/shell structure. | 01-08-2009 |
20090047590 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE - Provided is a toner for developing electrostatic image which is excellent in shelf stability, and is further excellent in low-temperature fixability so as to be capable of maintaining a high fixing rate even at a low fixing temperature. | 02-19-2009 |
20090087765 | Toner for developing electrostatic latent image - A toner for developing an electrostatic latent image, comprising a toner particles containing at least a binder resin, a colorant and a charge control agent, the toner particles having a volume mode diameter (a) from 5 to 10 μm, a ratio (Dv/Dp), of a volume average particle diameter (Dv) to a number average particle diameter (Dp), from 1.0 to 1.3, and an average circle degree from 0.97 to 0.995, the toner particles having a standard deviation (b) not more than 2 μm of the particle diameter, the toner particles having a ratio (C1/C2) from 1.00 to 1.02, wherein c1 represents an average circle degree of the toner particles having a particle diameter not less than (a−2b) μm to less than a μm, and c2 represents an average circle degree of the toner particles having a particle diameter not less than a μm and less than (a+2b) μm, wherein a water extract obtained by dispersing the toner in ion exchange water having a conductivity σ1 from 0 to 10 μS/cm so that the toner concentration is 6% by weight, heating to boil the water for 10 minutes, adding separately boiled ion exchange water having a conductivity σ1 from 0 to 10 μS/cm thereto to compensate for evaporated water up to the original volume, and cooling to a room temperature has a conductivity σ2 from 20 μS/cm or less, and σ2−σ1 is from 0.1 to 10 μS/cm. | 04-02-2009 |
20090123858 | TONER, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - A toner is composed of toner particles which contain at least a binder resin, a colorant, and a release agent. As to particle size distribution and particle number distribution of the toner particles, a volume average particle size of the toner particles is set to be 3.0 μm to 6.0 μm, and a content of 5.0 μm or smaller toner particles is set to be 40% by number while a content of 8.0 μm or larger toner particles is set to be less than 2% by volume. Furthermore, an amount of the release agent in toner particle surface is set to be 0.7% by weight or more and 1.8% by weight or less. And furthermore, the release agent is a petroleum-based release agent. | 05-14-2009 |
20090123859 | TONER - Provide is a toner including toner particles each containing at least a binder resin and a colorant, and an inorganic fine powder, in which the inorganic fine powder has a ratio (A/B) of a total pore volume A measured in a pore diameter range of from 1.9 nm or more and to 8.0 nm or less to a total pore volume B measured in a pore diameter range of from 1.9 nm or more and to 300.0 nm or less of from 0.20 or more and to 1.00 or less, and the total pore volume A is from 1.00×10 | 05-14-2009 |
20090136862 | Process for producing binder resin for electrostatic charge image developing toner and process for producing toner therewith - A process for producing a binder resin for electrostatic charge image developing toner, including the step (1) of mixing in combination with a raw material containing a low-molecular-weight resin and a high-molecular-weight resin and the step (2) of simultaneously therewith and/or thereafter removing a volatile component, characterized in that the raw material of the step (1) further contains a wax. Further, there is provided a process for producing an electrostatic charge image developing toner, characterized in that the above binder resin for toner is further loaded with the colorant. | 05-28-2009 |
20090136863 | EMULSION AGGREGATION TONER HAVING ZINC SALICYLIC ACID CHARGE CONTROL AGENT - A toner for developing electrostatic images including emulsion aggregation toner particles with a styrene acrylate latex resin, at least one additive, at least one colorant, and a charge control agent comprising 3,5 di-tert-butylsalicyclic acid zinc salt. | 05-28-2009 |
20090155703 | TONER COMPOSITIONS AND PROCESSES - A toner composition includes toner particles including a polymeric resin, a colorant, a wax, and a optional coagulant. | 06-18-2009 |
20090162771 | ELECTROPHOTOGRAPHIC TONER, DEVELOPER FOR ELECTROPHOTOGRAPHY USING THE TONER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS USING THE SAME - The invention provides an electrophotographic toner having at least: a binder resin, a coloring agent, and an alkali metal salt of polyethylene oxide. | 06-25-2009 |
20090162772 | IMAGE FORMING METHOD - An image forming method, including forming an electrostatic latent image on a latent image bearer; forming a thin layer of a toner on a developing roller with a thin-layer forming member; and feeding the toner with the developing roller to the electrostatic latent image to develop the electrostatic latent image, wherein the toner is a pulverized toner, including a binder resin; a wax; and an inorganic particulate material, and wherein the following relationships (1) to (3) are satisfied: | 06-25-2009 |
20090197193 | TONER - To provide a toner which has superior low-temperature fixing performance, high-temperature anti-offsetting properties and developing performance and may cause neither melt sticking of toner to photosensitive member nor turn-up of cleaning blade. The toner contains at least a binder resin, a colorant and a wax, and the wax is characterized by i) being an oxidized hydrocarbon wax, ii) having a hydroxyl value of from 5 mgKOH/g or more to 150 mgKOH/g or less, and iii) having, in molecular weight distribution measured by gel permeation chromatography of tetrahydrofuran-soluble matter, a main peak within the range of molecular weight of from 200 or more to 600 or less, and a component with a molecular weight of 700 or more in a content of 3% by mass or less. | 08-06-2009 |
20090220879 | TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGE, IMAGE FORMING DEVICE AND PROCESS CARTRIDGE USING THE SAME - Provision of a toner for developing a latent electrostatic image, including a colorant, a binder resin, and a releasing agent, where molecular weight distribution of THF-soluble components of the toner measured by a GPC is in the range of Mw 4,000 to Mw 11,000, and a peak area of low molecular weight components having a molecular weight of 200 to 500 is 3.2% or less based on the whole peak area. | 09-03-2009 |
20090233200 | DEVELOPER AND IMAGE FORMING APPARATUS - A developer to be used in an image forming apparatus includes a toner containing a core toner including a colorant, a binder resin, a release agent and a charge controlling agent containing Al and Mg, a first inorganic oxide externally added to the core toner, having a primary particle diameter of from 51 to 200 nm in an amount of from 0.2 to 5.0 wt % based on the core toner, and a second inorganic oxide externally added to the core toner, having a primary particle diameter of from 8 to 50 nm in an amount of from 0.2 to 4.0 wt % based on the core toner, and a carrier having a volume resistivity under an electric field of 1000 V/mm of from 1×10 | 09-17-2009 |
20090233201 | DEVELOPER AND IMAGE FORMING APPARATUS - A developer to be used in an image forming apparatus has a carrier and a toner containing a colorant, a binder resin, a release agent, a charge controlling agent containing Al and Mg, and a conductive inorganic oxide having an intrinsic resistivity of from 1.0×10 | 09-17-2009 |
20090258307 | DEVELOPER AND IMAGE FORMING APPARATUS - A developer used in an image forming apparatus, the developer containing: a toner, and a carrier that charges the toner, the toner containing a core toner, and an external additive that is added to a surface of the core toner, the core toner containing a colorant, a binder resin, a releasing agent, and a charge controlling agent containing Al and Mg, an amount of the charge controlling agent on the surface of the core toner being from 0.2 to 4.0 cps/eV in terms of a Mg amount measured by EDX, the core toner having a circularity of from 0.880 to 0.930, the external additive having a primary particle diameter of from 70 to 200 nm, an amount of the external additive being from 0.2 to 3.0% by weight based on the core toner. | 10-15-2009 |
20090258308 | Toner and Method of Preparing the Same - The present invention provides a toner having a core-shell structure which is formed by aggregation-coalescence of latex particles having bimodal particle size distribution. The toner according to the present invention can prevent scattering and image offset by enhancing adhesiveness and charge-up rate. The toner can also have controlled particle morphology of the particles and a uniform particle size distribution. | 10-15-2009 |
20090291379 | TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT - To provide toner which is capable of suppressing consuming amount of toner and preventing cleaning failure, and even when a high speed printing machine is used, can reduce a problem of e.g. fogging in a long-term use and is excellent in image stability. | 11-26-2009 |
20090291380 | TONER - A toner in which, in a loss tangent (tan δ) curve obtained by a dynamic viscoelasticity test, the tan δ shows a maximal value δa in the temperature region of 28.0-60.0° C., which maximal value δa is 0.50 or more, and shows a minimal value δb in the temperature region of 45.0-85.0° C., which minimal value δb is 0.60 or less, where the difference between the maximal value δa and the minimal value δb is 0.20 or more; and, where the temperature that affords the maximal value δa is represented by Ta(° C.) and the temperature that affords the minimal value δb is represented by Tb(° C.), the difference between the Ta and the Tb is 5.0-45.0° C.; and the toner having, in a storage elastic modulus (G′) curve obtained by the dynamic viscoelasticity test, a value G′a of a storage elastic modulus at the Ta, of 1.00×10 | 11-26-2009 |
20090297973 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - The present invention provides a toner which includes at least a binder resin, and a colorant, wherein the toner has a concentration of radioactive carbon isotope C-14 of 10.8 pMC or higher. | 12-03-2009 |
20100047705 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER FOR DEVELOPING ELECTROSTATIC IMAGE, AND METHOD FOR FORMING IMAGE - A toner for developing an electrostatic image comprises: a binder resin; and a releasing agent, wherein the binder resin comprises a polycondensation resin obtained by polycondensing a polycondensation monomer in the presence of a polycondensation catalyst, the releasing agent comprises a condensation compound obtained by condensing a condensation monomer in the presence of a condensation catalyst, the toner contains a metallic element derived from the polycondensation catalyst and the condensation catalyst in an amount of from 0 to 10 ppm, and the toner contains a sulfur component in an amount of from 100 to 20,000 ppm. | 02-25-2010 |
20100124713 | TONERS INCLUDING CARBON NANOTUBES DISPERSED IN A POLYMER MATRIX - A toner comprising: a polymer matrix comprising carbon nanotubes dispersed in a polymer; optionally one or more colorants; and optionally one or more waxes. | 05-20-2010 |
20100183968 | TRANSPARENT TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE, ELECTROSTATIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - The invention provides a transparent toner for developing an electrostatic latent image, including a binder resin and a release agent, the difference between the endothermic peak Tm of the release agent in a temperature increasing process and the exothermic peak Tc of the release agent in a temperature decreasing process being from about 10° C. to about 50° C., where Tm and Tc are measured with a differential scanning calorimeter (DSC) according to the ASTM method. | 07-22-2010 |
20100203438 | TWO-COMPONENT DEVELOPER, REPLENISHING DEVELOPER, AND IMAGE-FORMING METHOD - A two-component developer containing a yellow toner and a magnetic carrier, wherein the yellow toner has the characteristics: (i) when the concentration of the yellow toner in a solution of the yellow toner in chloroform is represented by Cy (mg/ml) and the absorbance of the solution at a wavelength of 422 nm is represented by A | 08-12-2010 |
20100216066 | TRANSPARENT TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPING, ELECTROSTATIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A transparent toner for electrostatic latent image developing, including a binder resin and a release agent, the difference between Tm and Tc being from about 30° C. to about 50° C., wherein Tm is an endothermic peak temperature of the release agent determined in a temperature rising process and Tc is an exothermic peak temperature of the release agent determined in a temperature decreasing process, in a measurement by a differential scanning calorimeter (DSC) according an ASTM method, and the toner having a weight average molecular weight of from about 35,000 to about 70,000. | 08-26-2010 |
20100227266 | TONER FOR FORMING IMAGES, ONE-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - A toner prepared by pulverization methods, including a binder resin; and a colorant, wherein the binder resin is prepared by melting and kneading a polyester resin having an unsaturated bond with a crosslinking reaction initiator diluted with a release agent, and the colorant is a press cake pigment after washed. | 09-09-2010 |
20110014558 | DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME - According to one embodiment, a method for producing a developing agent including aggregating fine particles of a toner material containing a binder resin and a coloring agent in a dispersion liquid in which the fine particles are dispersed in an aqueous medium to form aggregated particles, and washing the aggregated particles and drying the washed aggregated particles, forming toner particles is provided. An electrical conductivity of the toner particles is measured by a toner electrical conductivity evaluation method. A sample toner is prepared by adhering an additive to surfaces of the toner particles, and a content ratio of a sodium element to a carbon element in a region to which the additive is not adhered of the toner is measured. The washing of the toner particles is repeated until each of the measurement values becomes a predetermined reference value or less. | 01-20-2011 |
20110020742 | PROCESS FOR PREPARING POLYMERIZED TONER - A process for preparing toner and a polymerized toner prepared thereby are provided. The process for preparing toner comprises: forming an aqueous dispersion medium comprising calcium phosphate; forming a monomer mixture of a polymer charge control agent having weight average molecular weight of about 10,000 to 20,000, pigment, and a monomer for a binder resin; dispersing the monomer mixture in the aqueous dispersion in the form of droplets; and suspension-polymerizing the monomer mixture dispersed in the form of droplets, wherein about 2 to 6 parts by weight of the calcium phosphate and about 0.6 to 10 parts by weight of the charge control agent are used, on the basis of 100 parts by weight of the monomer mixture. | 01-27-2011 |
20110045395 | ELECTROSTATIC-IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, METHOD OF MANUFACTURING ELECTROSTATIC-IMAGE-DEVELOPING TONER, TONER CARTRIDGE, PROCESS CARTRIDGE, METHOD OF IMAGE FORMATION, AND IMAGE FORMING APPARATUS - An electrostatic image developing toner includes toner particles that contain a binding resin, a coloring agent and a release agent and that have D50 of from about 2.0 μm to about 8.0 μm, D50 standing for a volume-average particle size of the toner particles; and non-colored release agent particles, wherein out of the non-colored release agent particles, those ranging in volume-average particle size of from about 0.8 to about 1.2 times a value of D50 are present in a proportion of about 50 or below per 5,000 of the toner particles. | 02-24-2011 |
20110086305 | TONER, METHOD OF MANUFACTURING TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner including a mother toner comprising a binder resin and a calixarene having a halogen group, and a charge controlling agent having a halogen group that is present on a surface of the mother toner. The ratio of halogen ion to carbon ion on a surface of the toner is from 0.01 to 0.5, when determined by TOF-SIMS. The toner can be prepared by preparing a first liquid by dissolving or dispersing toner components including a calixarene having a halogen group and a binder resin and/or a precursor of the binder resin in an organic solvent; preparing a second liquid by emulsifying or dispersing the first liquid in an aqueous medium; removing the organic solvent from the second liquid; preparing a third liquid by washing the second liquid from which the organic solvent is removed; and adding a charge controlling agent having a halogen group to the third liquid. | 04-14-2011 |
20110104604 | TONER AND MANUFACTURING METHOD OF TONER - Disclosed is a manufacturing method of a toner including a vinyl series resin being a polymer of a radical polymerizable monomer, and a coloring agent, the method comprising: dispersing a crystalline organic compound having an unsaturated bond in an aqueous medium to prepare a dispersion liquid of the crystalline organic compound; causing a radical polymerization reaction between an unsaturated bond part of the crystalline organic compound and the radical polymerizable monomer after adding the radical polymerizable monomer to the dispersion liquid of the crystalline organic compound, to prepare a dispersion liquid of resin particles including the obtained polymer; and mixing at least the dispersion liquid of the resin particles and a dispersion liquid of coloring agent particles, and aggregating the resin particles and the coloring agent particles to form toner particles. | 05-05-2011 |
20110123917 | TONER, DEVELOPER, AND METHOD OF MANUFACTURING TONER - In the present invention, provided is a toner suitable for fixing at low temperature, which exhibits excellent performance against thermal stress as well as mechanical stress with no generation of blocking even during storage for a long duration in an unused state, and also with no generation of tacking of toner images after fixing. Also disclosed is a toner comprising at least a binder resin, a colorant and a wax, the toner comprising a fatty acid ester wax comprising a hydroxyl group, and an aliphatic alcohol. | 05-26-2011 |
20110171571 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING ELECTROPHOTOGRAPHIC TONER - The disclosure provides an electrophotographic toner and methods for preparing the same, including a first binder resin, a second binder resin, a colorant, a releasing agent, a charge control agent, and an ionomer, wherein the second binder resin is a resin derived biomass. | 07-14-2011 |
20110212395 | ELECTROPHOTOGRAPHIC TONER - 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. | 09-01-2011 |
20110229813 | ELECTROSTATIC IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE-FORMING METHOD, AND IMAGE-FORMING APPARATUS - An electrostatic image-developing toner comprising a binder resin, wherein the content of all the chlorine-substituted benzene derivatives in the electrostatic image-developing toner is about 0.01 ppb or more and about 10 ppb or less. | 09-22-2011 |
20110244384 | CARBON BLACK GRANULATE, METHOD FOR PRODUCING CARBON BLACK GRANULATE, AND USE THEREOF - The invention relates to carbon black granulates having an APC value, measured at a conveying speed of 8 m/s and a solid load of 27 g/kg, less than or equal to 20 and a 25 [mu]m pressure filter value of less than 5 bar cm2/g. The carbon black granulate is produced by carbon black powder being pre-granulated in a first mixing granulator with addition of a granulation liquid with or without binders and being granulated to a finished state in a second mixing granulator without further addition of granulation liquid. The carbon black granulate can be used as a filler, reinforcing filler, UV stabilizer, conductive carbon black, pigment, or reducing agent. | 10-06-2011 |
20110262852 | DECOLORIZABLE ELECTROPHOTOGRAPHIC TONER - A heat-decolorizable toner of an embodiment of the present invention includes a heat-decolorizable color material, a binder resin, and a foaming agent. | 10-27-2011 |
20110300478 | MAGENTA TONER - A magenta toner characterized by satisfying, in DSC measurement, 40.0≦Tg(0.5)≦60.0 and 2.0≦Tg(4.0)-Tg(0.5)≦10.0, wherein when preparing a solution of which the magenta toner is dissolved in ethyl acetate, and defined the concentration of the thereof as C | 12-08-2011 |
20110305982 | TONER AND METHOD FOR MANUFACTURING THE SAME - A toner includes a binder resin containing a polyester resin A obtained by subjecting aromatic dicarboxylic acid, rosin, and trivalent or higher-valent alcohol as starting materials to polycondensation, a content of the rosin in a sum of the starting materials being 60% by weight or more, and a polyester resin B obtained by subjecting aromatic dicarboxylic acid and polyalcohol as starting materials to polycondensation; a dispersing aid for dispersing the polyester resin A into the polyester resin B; and a colorant. | 12-15-2011 |
20110305983 | Release Agent for Toner, and Toner - The objectives of the present invention are attained with a release agent for toner that is obtained by grafting styrene compounds to an α-olefin polymer that conforms to the following conditions (a) and (b), wherein 70 mass % or more of the release agent is insoluble in 2-butanone when the release agent is dispersed at 25° C. into 2-butanone so that the mass ratio of the release agent to the dispersion is 15%. (a) The α-olefin polymer is to be produced by polymerization of at least one α-olefin monomer that has 16 or more to 36 or less carbon atoms. (b) The α-olefin polymer is to have a melting point between 30° C. or higher and 80° C. or lower, and has one peak temperature whose peak has the half-height width of 15° C. or less in a measurement of the melting behavior of the α-olefin polymer by means of differential scanning calorimetry. | 12-15-2011 |
20110311909 | Toner Compositions - The present disclosure provides processes for producing images of excellent color fidelity when incorporating a magenta toner with a lower colorant loading in addition to a first magenta toner. In embodiments, the magenta pigmented particles may be magenta emulsion aggregation toners. In accordance with the present disclosure, a pair of magenta toners are matched in color, wherein the color of a first magenta toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second magenta toner, which is lighter than the first magenta toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light magenta toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 600 and 700 nanometers. | 12-22-2011 |
20110318684 | MAGENTA TONER FOR LIGHT FIXING, DEVELOPER FOR ELECTROSTATIC IMAGE, DEVELOPER CARTRIDGE, AND IMAGE FORMING APPARATUS - A magenta toner contains a binder resin; at least one selected from a diimonium compound represented by the following general formula (1) and an aminium compound represented by the following general formula (2); and a monomethylquinacridone: | 12-29-2011 |
20120196221 | CARBON BASED BLACK TONERS PREPARED VIA LIMITED COALESCENCE PROCESS - A black toner composition comprising toner particles prepared by a chemical process of manufacture comprising carbon black pigment, a first addition polymer comprising carboxylic acid groups along the polymer backbone, and a thermoplastic second polymer binder distinct from the first polymer, wherein the first polymer has an Acid Value of from 30 to 220 and is present at a weight ratio of greater than 1:2 relative to the amount of carbon, and at a relatively lower weight percent than the second polymer. A process for preparation of such toner particles comprising: preparing a masterbatch comprising a carbon black and a first addition polymer comprising carboxylic acid groups along the polymer backbone and having an Acid Value of from 30 to 220, where the first polymer is present at a weight ratio of greater than 1:2 relative to the amount of carbon; dissolving a thermoplastic second polymer binder in an organic solvent; adding the masterbatch to the solution of second polymer binder to form an organic phase, wherein the first polymer is present at a lower weight percent than the second polymer; dispersing the organic phase in an aqueous phase comprising a particulate stabilizer to form a dispersion; and removing the solvent from the organic phase to form toner particles comprising the first polymer, the second polymer binder and carbon black. | 08-02-2012 |
20120202148 | Emulsion Aggregation Toner Compositons - Disclosed is a toner which comprises particles comprising: (a) a core comprising: (1) a first resin; and (2) a first conductive colorant; and (b) a shell comprising: (1) a second resin; and (2) a second conductive colorant. | 08-09-2012 |
20130164668 | TONER COMPOSITIONS OF BIODEGRADABLE AMORPHOUS POLYESTER RESINS - Disclosed is a toner that includes a mixture of a bio-based amorphous polyester resin, a crystalline polyester resin, and a colorant. | 06-27-2013 |
20130171551 | PROCESS FOR PREPARING TONER INCLUDING A BORAX COUPLING AGENT - A method for producing toner according to one example embodiment includes combining and agglomerating a first polymer emulsion with a colorant dispersion and a release agent dispersion to form toner cores. A borax coupling agent is added to the toner cores. A second polymer emulsion is combined and agglomerated with the toner cores having the borax coupling agent to form toner shells around the toner cores. The aggregated toner cores and toner shells are fused to form toner particles. | 07-04-2013 |
20130183615 | Tunable Gloss Toners - The present disclosure provides toners having a tunable gloss level, electrophotographic apparatus for suing such toners as well as processes for making such toners. | 07-18-2013 |
20130244160 | LOW STRUCTURE CARBON BLACK AND METHOD OF MAKING SAME - A carbon black having an I | 09-19-2013 |
20130252159 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes toner particles that contain a colorant, a binder resin and a release agent, and an external additive, in which the external additive contains inorganic particles including an aliphatic alcohol having 5 or more carbon atoms and a melting point of 20° C. or lower on the surfaces thereof. | 09-26-2013 |
20130337375 | CARBON BASED BLACK TONERS PREPARED VIA LIMITED COALESCENCE PROCESS - A black toner composition is disclosed. The composition includes toner particles prepared by a chemical process of manufacture including carbon black pigment, a first addition polymer comprising carboxylic acid groups along the polymer backbone, and a thermoplastic second polymer binder distinct from the first addition polymer. In the composition, the first polymer has an Acid Value of from 30 to 220 and is present at a weight ratio of greater than 1:2 relative to the amount of carbon, and at a relatively lower weight percent than the second polymer. | 12-19-2013 |
20130337376 | TONER, AND FULL-COLOR IMAGE FORMING METHOD AND FULL-COLOR IMAGE FORMING APPARATUS USING THE TONER - A toner including a binder resin, a colorant and a phenol multimer represented by the following General Formula (1): where R | 12-19-2013 |
20140162180 | ELECTROSTATIC IMAGE DEVELOPER - An electrostatic image developer having little change in charge amount, no generation of fog and excellent environmental stability under all of low temperature and low humidity environment, normal temperature and normal humidity environment, and high temperature and high humidity environment is provided. Disclosed is an electrostatic image developer comprising a colored resin particle containing a binder resin and a colorant, and an external additive, wherein the external additive contains an alumina fine particle in plate-like shape subjected to a hydrophobicity-imparting treatment having a number average primary particle diameter of 20 to 120 nm and an aspect ratio of 3 to 15, and a content of the alumina fine particle is in the range from 0.05 to 1 part by mass with respect to 100 parts by mass of the colored resin particle. | 06-12-2014 |
20140170548 | Continuous Production of Toner - Continuous and semi-continuous emulsion aggregation processes for the production of toner particles are presented. | 06-19-2014 |
20140170549 | CHARGE CONTROL AGENT COMPOSITION FOR EXTERNAL ADDITION AND ELECTROSTATIC IMAGE DEVELOPING TONER - There is provided an electrostatic image developing toner less likely to cause image degradation even when used for a long period, by controlling CCA particles present on surfaces of toner particles and thereby keeping an amount of tribocharge generated between the toner and a magnetic carrier or the like constant. A charge control agent composition for external addition for controlling charge amount of toner particles includes: at least two types of carrier particles different in average particle size of primary particles; and a charge control agent (CCA), and an electrostatic image developing toner is constituted of a mixture of toner particles and the aforesaid charge control agent composition for external addition. | 06-19-2014 |
20150010861 | Hyperpigmented Toner - The present disclosure describes hyperpigmented toner compositions containing a mixture of insulative color pigments, which toners exhibit reduced dielectric loss and improved tribo-charging. | 01-08-2015 |
20150037719 | TONER - A toner is provided including large particle-diameter external additives with sweep to the concaves of a toner particle suppressed, so that the large particle-diameter external additives function as spacer particles for a long period. The toner includes toner particles which contain a binder resin and magnetic material, and organic-inorganic composite fine particles having a structure including inorganic fine particles embedded in a vinyl resin particle. The presence state of the magnetic material on the toner particle surface satisfies specific conditions and the presence state of the organic-inorganic composite fine particles on the toner surface satisfies specific conditions. | 02-05-2015 |
20150044603 | ELECTROPHOTOGRAPHIC TONER - The present invention addresses the problem of providing an electrophotographic toner which has excellent storage property, is excellent in offset resistance and low-temperature fixing property during printing and has few substances causing staining with time, odor or dust inside a copy machine or a printer. The present invention relates to an electrophotographic toner characterized by containing an ethylene copolymer which comprises a constituent unit (a) derived from ethylene in an amount of 80 to 99.5% by mol and a constituent unit (b) derived from a cyclic olefin of 8 or more carbon atoms in an amount of 0.5 to 20% by mol [(a)+(b)=100% by mol] and satisfies the requirements: (i) the intrinsic viscosity [η] is in the range of 0.01 to 0.50 dl/g, and (ii) the crystallinity is in the range of 50 to 90%. | 02-12-2015 |
20150072282 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, METHOD FOR MANUFACTURING ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, AND METHOD FOR FIXING ELECTROSTATIC LATENT IMAGE DEVELOPING TONER - An electrostatic latent image developing toner includes toner particles. Each toner particle includes a toner core containing a binder resin, a shell layer coating a surface of the toner core, and particulates having a higher hardness than the shell layer. Each shell layer contains a thermosetting resin, and the particulates are present within the shell layer. Preferably, the content of the particulates having a higher hardness than the shell layer is 0.1% by mass or more and 5.0% by mass or less with respect to a total amount of the toner particles. | 03-12-2015 |
20150104741 | TONER ADDITIVES FOR TUNABLE GLOSS - Toner additives for imparting certain properties to printed images. In particular, toner additives that provide desired tunable gloss levels. The present toner additives comprise polyolefins. The incorporation of such additives into toners, in particular, emulsion aggregation (EA) toners, have provided gloss control without any significant adverse impact on the minimum fix properties of the toner. | 04-16-2015 |
20150104742 | EMULSION AGGREGATION TONERS - Toner compositions comprising toner particles are described, where the toner particles have an elastic modulus in the range of about 100 Pa to about 1050 Pa and/or have a viscous modulus in the range of about 100 Pa to about 1000 Pa. | 04-16-2015 |
20150132691 | SUPER LOW MELT TONER HAVING CRYSTALLINE AROMATIC ETHERS - A toner includes a polymeric resin, optionally a colorant, and a small molecule crystalline aromatic ether having a molecular weight less than 1,000 g/mol. The polymeric resin may be an amorphous resin and a mixture of the amorphous resin and the crystalline aromatic ether may be characterized by a reduction in glass transition temperature from that of the resin and by the lack of a melting point for the crystalline aromatic ether as determined by differential scanning calorimetry, the enthalpy of fusion for the crystalline aromatic ether in the mixture being measured to be less than 10% of the enthalpy of fusion of the crystalline aromatic ether in pure form. Furthermore, the toner may be configured to have a crease fix minimum fusing temperature (MFT) less than or equal to the crease fix MFT of a benchmark ultra-low-melt emulsion aggregation toner. Suitable crystalline aromatic ethers may include benzyl 2-naphthyl ether. | 05-14-2015 |
20150338756 | DEVELOPER FOR ELECTROSTATIC LATENT IMAGE - A developer for electrostatic latent image contains toner particles. The toner particles contain a resin and a coloring agent, and the coloring agent includes a first coloring agent, a second coloring agent, and a third coloring agent. The first coloring agent is carbon black, the second coloring agent is one or more of C. I. Pigment Violet 19 and C. I. Pigment Violet 23, and the third coloring agent is one or more of C. I. Pigment Brown 23 and C. I. Pigment Brown 25. A content of the second coloring agent is not lower than 8 mass % and not higher than 25 mass % with respect to a total amount of the coloring agents. | 11-26-2015 |
20150370189 | TONER - Provided is a toner for which the heat-resistant storability and the low-temperature fixability are able to co-exist at higher levels and for which the temporal stability of the low-temperature fixability is also excellent. The toner has a toner particle that contains a binder resin and a pigment, and this binder resin contains a polyester resin that has a specific structure and specific properties. | 12-24-2015 |
20160070187 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, AND TONER CARTRIDGE - An electrostatic charge image developing toner includes toner particles containing a binder resin that contains a polyester resin having an ethylenically unsaturated double bond, a di- or higher valent metal ion, and (meth)acrylic acid alkyl ester that has an alkyl chain having 1 to 10 carbon atoms, wherein a content of the (meth)acrylic acid alkyl ester is in a range of 50 ppm to 500 ppm with respect to toner particles. | 03-10-2016 |
20180024454 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER | 01-25-2018 |