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Developing composition or product

Subclass of:

430 - Radiation imagery chemistry: process, composition, or product thereof

430031000 - ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT

430097000 - Post imaging process, finishing, or perfecting composition or product

430104000 - Finishing or perfecting composition or product

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
430108100 Dry toner with chemically identified adjuvant (e.g., charge control agent, colorant, etc.) 486
430109100 Dry toner having chemically identified binder 225
430110100 Identified dry toner physical structure 90
430112000 Liquid 80
430111100 Chemically identified carrier for dry toner 70
430107100 Dry multicolor toner (i.e., composition containing more than one colored toner (e.g., cyan, magenta, and yellow toners, etc.)) with chemically identified colorant or colorant identified by color 43
430106100 Dry toner containing a chemically identified magnetic component 30
430111400 Identified physical parameter of carrier particle or dry toner particle, etc. (Tg, MW, coercivity, density, etc.) 24
Entries
DocumentTitleDate
20080280224CARRIER AND METHOD FOR PRODUCING THE SAME, DEVELOPER AND IMAGE FORMING METHOD - To provide a method for producing a carrier including treating a coating layer on a surface of a core material with a polymer precursor in a supercritical fluid and/or a subcritical fluid so as to add the polymer precursor to the coating layer, and subjecting the coating layer to oxidation treatment so as to form a polymer from the polymer precursor in the coating layer, and a carrier produced by the method.11-13-2008
20130045442TONER, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner including a resin particle (C) is provided. The resin particle (C) includes a resin particle (B) and a resin particle (A). The resin particle (B) includes a resin (b). The resin particle (A) or covering layer (P) includes a resin (a). The resin particle (A) or covering layer (P) is adhered to a surface of the resin particle (B). The resin (a) is a polyester resin. The resin (a) has a total acid value of 15 to 36 mgKOH/g. The resin particle (A) or covering layer (P) has a surface acid value of 10 to 27 mgKOH/g.02-21-2013
20130045441INK TONER PARTICLES WITH CONTROLLED SURFACE MORPHOLOGY - The present invention provides a process for producing a colored toner having a textured surface, the process includes forming a polymer composition of at least one polymer and a colorant, where the at least one polymer has a softening temperature from about 60° C. to about 160° C.; forming an aqueous mineral suspension of at least one multivalent metal phosphate; forming a dispersion by combining the polymer composition and the aqueous mineral suspension under agitation to form a solid portion comprising dispersed particles of the polymer composition; heating the dispersion to a temperature above a glass transition temperature (Tg) of the polymer composition and increasing the pH to above 7.0; cooling the dispersion including the dispersed particles of the polymer composition to a temperature of from about 1° C. to about 89° C.; and recovering the particles.02-21-2013
20110207044TUNABLE GLOSS TONERS - The present disclosure provides toners having a tunable gloss level, electrophotographic apparatuses for using such toners as well as processes for making such toners.08-25-2011
20110183249PROCESS FOR PRODUCING TONER FOR ELECTROPHOTOGRAPHY - The present invention relates to a process for producing a toner for electrophotography which is excellent in dispersibility of a colorant in the toner and capable of considerably improving an image density, as well as a toner for electrophotography which is produced by the process. There is provided a process for producing a toner for electrophotography which includes the step of mixing a dispersion of colorant-containing polymer particles with a dispersion of resin particles containing substantially no colorant to aggregate the colorant-containing polymer particles and the resin particles, wherein the polymer contains a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing monomer (b).07-28-2011
20110183248DEVELOPING AGENT AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, a method of manufacturing a color erasable developing agent including preparing a dispersion containing a fine particle containing a leuco dye and a developer, a fine particle containing a color erasing agent, a toner binder resin fine particle and a medium, aggregating the fine particles in the medium, and heat fusing the aggregate to form a toner particle is provided.07-28-2011
20110183247WHITE TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPEMENT, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A white toner for electrostatic charge image development is disclosed. The white toner for electrostatic charge image development includes a binder resin, a first white pigment, a second white pigment, and a release agent, a specific gravity D07-28-2011
20100062352TONER, AND PRODUCTION METHOD OF THE SAME - The present invention provides a method for producing a toner, the method including: preparing a wax dispersion liquid by cooling a wax solution, in which a wax is heated and dissolved or dispersed in an organic solvent, in a container so that a standard deviation σ of a temperature distribution between a center portion of the container and an inner wall of the container is 0.5 or less and the cooling rate is 2.0° C./min or more, to precipitate wax particles in the wax solution; forming toner base precursor particles by adding an aqueous phase containing resin fine particles into an oil phase containing at least the wax dispersion liquid, a colorant and a binder resin and mixing the oil phase and the aqueous phase with each other; and preparing toner base particles by removing the solvent from the toner base precursor particles.03-11-2010
20110189604TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT, ELECTROSTATIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner for electrostatic latent image development is disclosed. The toner for electrostatic latent image development includes toner particles, the toner particles includes a binder resin and a release agent, and the toner has a linear thermal expansion coefficient in accordance with JIS K 7197-1991 of from about 6×1008-04-2011
20110136051TONER, AND DEVELOPER, IMAGE FORMING METHOD AND PROCESS CARTRIDGE USING THE TONER - A toner for use in developing an electrostatic latent image is provided. The toner includes a colored particulate material including at least a binder resin and a colorant; and an external additive present on a surface of the colored particulate material and including a particulate crystalline hydroxyapatite. The particulate crystalline hydroxyapatite has an average aspect ratio of not less than 3 and less than 30.06-09-2011
20090280421METHOD OF MANUFACTURING TONER AND TONER - A method of manufacturing a toner including dispersing a binder resin, a coloring agent and a releasing agent in an organic solvent to obtain an oil phase; dispersing the oil phase in an aqueous medium with a shearing force to obtain a dispersion emulsion; wherein the shearing force is made by a screen or vessel that is situated around a rotor, the screen spinning in a direction opposite to the direction that the rotor spins. Toner produced. Method of using the toner.11-12-2009
20120183895MAGENTA TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - Provided is a magenta toner containing toner particles that contain a colorant and a binder resin, wherein the colorant contains C.I. Pigment Red 57:1 and C.I. Pigment Yellow 180, a mass ratio between the C.I. Pigment Red 57:1 and the C.I. Pigment Yellow 180 being 99:1 to 10000:1, and wherein the binder resin contains a polyester resin that has a repeating unit derived from bisphenol A ethylene oxide represented by formula (1):07-19-2012
20120183894MAGENTA TONER, TONER SET, MAGENTA DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A magenta toner includes a binder resin containing a polyester resin having a dodecenylsuccinic acid structure as a constituent unit, and a solid solution of C.I. Pigment Violet 19 and C.I. Pigment Red 122, the magenta toner having an amount of the solid solution of from 2% by mass to 30% by mass based on the total mass of the toner.07-19-2012
20130078562PHOTOLUMINESCENT TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND METHOD FOR PRODUCING THE PHOTOLUMINESCENT TONER - An electrostatic image developing toner including: first toner particles which contain a first binder resin and a photoluminescent pigment; and second toner particles which contain a second binder resin and do not contain a photoluminescent pigment, wherein the proportion of the second toner particles is in a range from 5% by number to 80% by number with respect to a total number of all toner particles.03-28-2013
20130078563TONER AND DEVELOPMENT AGENT, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE USING THE SAME - A toner includes a coloring agent, a binder resin comprising a crystalline resin having a urethane skeleton and/or urea skeleton, and a releasing agent (a microcrystalline wax). A development agent, a process cartridge, and an image forming apparatus employ the toner to form images on recording media electrophotographically.03-28-2013
20100075240ELECTROSTATIC-LATENT-IMAGE-DEVELOPING TONER, ELECTROSTATIC LATENT IMAGE DEVELOPER, PROCESS FOR PRODUCING ELECTROSTATIC-LATENT-IMAGE-DEVELOPING TONER, IMAGE-FORMING METHOD, AND IMAGE-FORMING APPARATUS - An electrostatic-image-developing toner includes toner particles containing a binder resin, a colorant, and a release agent, wherein the toner contains colorless binder resin particles and, of the colorless binder resin particles, particles having a volume-average particle size diameter 1.5 times as large as, or larger than that of, D50 of the toner particles are in a proportion of about 30 particles or less particles per 5,000 toner particles, with D50 being a volume-average particle size diameter of the toner particles.03-25-2010
20130157185TONER, DEVELOPMENT AGENT, AND IMAGE FORMING APPARATUS USING THE SAME - A toner includes a binder resin, a coloring agent, and a releasing agent containing two or more kinds of alkyl monoester compounds having a different number of carbon atoms in a range of from 30 to 50 carbon atoms. The toner has a crystallinity of 10% or more as measured by x-ray diffraction and/or the binder resin is a crystalline resin in an amount of 50% by weight or more of the binder resin. The two or more kinds of alkyl monoester compounds include a component A accounting for the largest amount ranging from 30% by weight to less than 50% by weight of the releasing agent and a component B accounting for the second largest amount ranging from 10% by weight to less than 50% by weight of the releasing agent.06-20-2013
20130157184TONER AND DEVELOPER - To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st−Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof.06-20-2013
20100330483COATED CARRIER REGENERATING METHOD, DEVELOPING CARTRIDGE CONTAINING TWO COMPONENT DEVELOPER CONTAINING TONER AND COATED CARRIER REGENERATED BY SAME COATED CARRIER REGENERATING METHOD, AND IMAGE FORMING APPARATUS DETACHABLY PROVIDED WITH SAME DEVELOPING CARTRIDGE - A coated carrier regenerating method in accordance with the present invention includes the step of: determining an amount of a worn-away coating resin of a used coated carrier. Accordingly, an amount of the coating resin layer to be supplemented, namely an amount of the coating resin with which the coating resin layer is to be supplementarily coated is found based on this amount of the worn-away coating resin, whereby the supplementary coating of the used coated carrier can be carried out with the coating resin in the amount thus determined. This allows regeneration of a coated carrier in which a coating resin has a uniform thickness, that is, a coating resin layer has a thickness which is unchanged from the thickness obtained before use of the coated carrier, without the need of completely removing the coating resin from the used coated carrier. According to the method of the present invention as mentioned above, it is possible to easily regenerate, in a shorter time and at a lower cost, a coated carrier in which a coating resin layer has a uniform thickness.12-30-2010
20130029258HYDROPHOBIC SILICA PARTICLES AND METHOD OF PRODUCING SAME - Hydrophobic silica particles are produced by reacting them with a hydrosiloxane agent.01-31-2013
20130029257THERMOCHROMIC COLOR-MEMORIZATION TONER, CARTRIDGE INCLUDING SAME HOUSED THEREIN, IMAGE FORMATION APPARATUS, CARTRIDGE SET, AND IMAGE FORMATION APPARATUS SET - The present invention relates to a thermochromic color-memory toner containing: a microcapsule pigment encapsulating a thermochromic color-memory composition; and a binder resin, in which the microcapsule pigment shows a hysteresis characteristic that, in a temperature-rise process, decoloration starts when the temperature reaches t01-31-2013
20100068641ELECTROPHOTOGRAPHIC DEVELOPER AND IMAGE FORMING METHOD - An electrophotographic developer including: magnetic particles, and a toner containing toner particles charged with the magnetic particles and having a particle diameter distribution, wherein the toner exhibits cumulative toner weight distributions of both square of charge amount q03-18-2010
20090042119METHOD OF MANUFACTURING TONER PARTICLES, TONER PARTICLES, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A method of manufacturing toner particles capable of decreasing the manufacturing costs by simplifying the manufacturing apparatus and by decreasing the number of the steps, as well as to provide toner particles, a two-component developer, a developing apparatus and an image forming apparatus are provided. A high-pressure homogenizer is constituted by a tank, a feed pump, a high-pressure pump, a heat exchanger, a nozzle, a first depressurizing module, a cooling unit, a second depressurizing module and a take-out port arranged in this order. A flow path constituted in the first depressurizing module has a straight portion tilted with respect to a direction in which the aqueous slurry passes and a portion for relaxing the flow of the aqueous slurry.02-12-2009
20090042118TONER FOR ELECTROPHOTOGRAPHY AND METHOD OF PREPARING THE TONER - A method of preparing a toner, including dripping a toner constituent liquid comprising an organic solvent; and toner constituents comprising a resin and a colorant, which are dissolved or dispersed in the organic solvent through a nozzle to form a droplet; and removing the organic solvent from the droplet, wherein the droplet is dried while contacted with a first de-solvent gas comprising steam in a pre-heated period and at least a part of a constant-rate drying period, or the droplet is dried at least in a pre-heated period and a constant-rate drying period, which include two stages including a first stage and a second stage, wherein the droplet is contacted with the first de-solvent gas including steam in the first stage and a second de-solvent gas having a dew point not greater than −10° C. under ordinary pressure in the second stage.02-12-2009
20130071783DEVELOPER AND IMAGE FORMING APPARATUS - According to an embodiment, provided is a developer, which is used for a full-color image forming apparatus, wherein the developer includes a monochrome toner and a color toner, each including a coloring material, an amorphous polyester resin, a crystalline polyester resin, and an ester wax which includes ester compounds having an alkyl group and also having a carbon number of from 32 to 48, the amorphous polyester resin to be blended in the monochrome toner has a melting point (Tm03-21-2013
20130071782ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, ELECTROSTATIC LATENT IMAGE DEVELOPING TONER MANUFACTURING METHOD, TONER CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - An electrostatic latent image developing toner contains a binder resin, a colorant, europium, and bismuth.03-21-2013
20130071781ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes toner particles and an external additive. The toner particles have a moisture content of from 0.1 mass % to 5.0 mass %, and the external additive has a volume average particle diameter of from about 70 nm to about 400 nm and an average circularity of from 0.5 to 0.9.03-21-2013
20130059244SILICA PARTICLES, ELECTROSTATIC IMAGE DEVELOPING TONER, DEVELOPER FOR DEVELOPING ELECTROSTATIC IMAGES, AND METHOD OF FORMING IMAGES - Silica particles have a volume average particle diameter in a range of from about 80 nm to about 300 nm, an average degree of circularity in a range of from about 0.920 to about 0.935, and a geometric standard deviation of the degree of circularity in a range of from about 1.02 to about 1.15.03-07-2013
20090269690Toner and Manufacturing Process Therefor - The invention provides a process for the manufacture of a toner which comprises the steps of: 10-29-2009
20130065172TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner including a colorant and a first binder resin is provided. The first binder resin has first and second glass transition points at a temperature Tg1 of −20 to 20° C. and a temperature Tg2 of 35 to 65° C., respectively, measured by a differential scanning calorimeter at a heating rate of 5° C./min. A ratio h1/h2 of a baseline displacement h1 observed in the first glass transition point to a baseline displacement h2 observed in the second glass transition point is less than 1.0. The first binder resin has a structure in which a first phase is dispersed in a second phase. The first and second phases consist of portions having larger and smaller phase difference values, respectively, than an intermediate value between maximum and minimum phase difference values in a binarized phase image obtained by an atomic force microscope with a tapping mode method.03-14-2013
20130065171LATENT ELECTROSTATIC IMAGE DEVELOPING CARRIER, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A latent electrostatic image developing carrier including: core particles each having magnetism; and a coating layer covering each of the core particles, wherein the latent electrostatic image developing carrier has a shape factor SF-2 of 115 to 150 and has a bulk density of 1.8 g/cm03-14-2013
20130065170ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes: toner particles; and an external additive. The external additive contains sol-gel silica having a volume average particle diameter of from about 70 nm to about 400 nm and an average circularity of from about 0.5 to about 0.9, and a dielectric loss factor of the toner is from about 5×1003-14-2013
20130164666TONER - To provide a toner having a superior developing performance while preventing any fixing assembly from being contaminated, the toner has toner particles which have toner base particles containing at least a binder resin, a colorant and a wax, and an inorganic fine powder, wherein the wax has a 0.2% by mass heating loss temperature of 200° C. or more and a 1.0% by mass heating loss temperature of 250° C. or more and has a melt viscosity at 120° C. of from 3.0 mPa·s to 15.0 mPa·s.06-27-2013
20130164664MIXER APPARATUS AND METHOD OF MAKING DEVELOPER - The present teachings describe an apparatus for mixing developer. The apparatus includes a first loader for dispensing a predetermined amount of toner particles into a container and a second loader for dispensing a predetermined amount and carrier particles in the container. A sealer seals the container. An acoustic mixer is provided for mixing the container, toner particles and carrier particles at a resonant frequency. A method of mixing developer is disclosed.06-27-2013
20130164665TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A toner including a mother particle and an external additive covering a surface of the mother particle is provided. The mother particle includes a binder resin, a colorant, and a release agent. The external additive includes a particulate cellulose having a number average particle diameter within a range of 15 to 105 nm.06-27-2013
20090011351METHOD OF MANUFACTURING TONER, TONER, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - A toner capable of forming high quality images of excellent image reproducibility at high definition and high resolution, being decreased for the bleed-out of a wax ingredient to the surface, causing less filming to a photoreceptor and offset phenomenon in a high temperature region, is provided. The toner is manufactured by a method including a preliminary pulverizing step of pulverizing a melt-kneaded product of toner raw materials in a liquid to obtain a coarse powder slurry containing a coarse toner powder, a finely pulverizing step of passing the coarse powder slurry through a pressure resistant nozzle under heating and pressurization thereby further pulverizing the coarse toner powder to obtain a fine powder slurry containing a fine toner powder and in a heated and pressurized state, a cooling step of cooling the fine powder slurry, and a depressurizing step of depressurizing the fine powder slurry.01-08-2009
20120237864ELECTROSTATIC IMAGE DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An electrostatic image developing toner including: a toner particle containing a coloring agent and a binder resin; and an external additive on the toner particle, wherein the external additive contains a silica particle, a primary particle of the silica particle has an average particle diameter of from 70 nm to 400 nm, a particle size distribution index of the primary particle of from 1.0 to 1.9, and an average circularity of from 0.5 to 0.9.09-20-2012
20110027711TONER FOR ELECTROPHOTOGRAPHY, DEVELOPER AND IMAGE FORMING APPARATUS - Toner for electrophotography contains toner base particles containing a binder resin and a colorant, and an external additive to be externally added to the toner base particles, and the external additive includes surface treated particles obtained by surface treating resin fine particles with a fatty acid metal salt.02-03-2011
20110281209TONER, TWO COMPONENT DEVELOPER, PROCESS CARTRIDGE AND COLOR IMAGE FORMING APPARATUS - 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 1.8.11-17-2011
20110097657TONER - An object of the present invention is to provide a toner in which the problems in the techniques described are solved. That is, the object is to provide a toner which has an excellent charging characteristic regardless of the environment and which achieves high image quality over a long period of time.04-28-2011
20110300477IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes plural developing units separately containing a toner A and a toner B that satisfy relationships (1) and (2) and have similar colors. The toner A and the toner B each contain a binder resin containing a polyester about 90 mass % or more of the binder resin, and about 90 mass % of the binder resin of the toner A and about 90 mass % of the binder resin of the toner B are the same resin. The polyester contains an amorphous polyester having an alkyl side chain and a crystalline polyester. The relationship (1) is Ta (toner A)>Tb (toner B) in terms of flow tester ½ effluent temperature. The relationship (2) is Aa (toner A)>Ab (toner B) in terms of an amount of an aluminum (with reference to net intensity) measured with fluorescent X-ray.12-08-2011
20100304286ELECTROPHOTOGRAPHIC TONER AND PROCESS FOR PRODUCING ELECTROPHOTOGRAPHIC TONER - Disclosed is an decolorizable electrophotographic toner, containing a binder resin, an electron-donating color-developable agent, and a wax having a color-developing action and having an acid value of 60 mgKOH/g or more.12-02-2010
20110111336Compositions and Methods for High Efficiency Absorption of Radiation, and Films Formed Thereof - An absorber with significant absorbance matching the processing radiation is included in the compositions for efficient capture of energy. Embodiments of the present disclosure can also be viewed as providing compositions that have a functional film precursor such as an ink that might include, a colorant, toner, polymer, dye, pigment, or a reactive component such as polymer precursors, and an absorber that is capable of absorbing radiation wavelength that is “matched” to the waveband of the processing radiation.05-12-2011
20120189950ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - The electrostatic charge image developing toner includes a colorant containing rutile type and anatase type titanium oxides, and a binder resin.07-26-2012
20110217644TONER, DEVELOPER USING THE TONER, METHOD FOR PREPARING THE TONER, AND IMAGE FORMING METHOD AND APPARATUS USING THE TONER - 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.09-08-2011
20110217643CARRIER FOR ELECTROSTATIC IMAGE DEVELOPER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A carrier for electrostatic image development includes: a carrier body including a core and a resin coating layer on the core; and first spherical silica particles having a volume-average particle diameter of from 50 nm to 300 nm that adhere to the surface of the carrier body at a ratio of from 0.001 parts by weight to 0.100 parts by weight relative to 100 parts by weight of the carrier body.09-08-2011
20100209835TRANSPARENT TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT, METHOD FOR PRODUCING THE SAME, ELECTROSTATIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides a transparent toner for electrostatic latent image development, containing a polyester resin and a release agent, the difference between an endothermic peak Tm of the release agent in a temperature increasing process and an exothermic peak Tc of the release agent in a temperature decreasing process when measured by an ASTM method with a differential scanning calorimeter (DSC) is from about 40° C. to about 50° C., and the degree of exposure of the release agent at the surface of the toner as determined quantitatively by X-ray photoelectron spectroscopy (XPS) is about 10% or less.08-19-2010
20110200928METHOD FOR PRODUCING TONER, TONER, AND IMAGE FORMING METHOD USING THE SAME - 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 μS/cm or less.08-18-2011
20120295188RESIN FOR USE IN TONER, TONER USING THE RESIN, DEVELOPER USING THE TONER, IMAGE FORMING APPARATUS AND METHOD USING THE TONER, AND METHOD OF MANUFACTURING RESIN - A resin for use in toner is provided. The resin comprises an oligomer segment and a soft segment. The oligomer segment comprises a polyhydroxycarboxylic skeleton and an aromatic diol skeleton.11-22-2012
20080241722Mixed Crystals Comprising C.I. Pigment Red 170 Derivatives - A mixed crystal of C.I. Pigment Red 170 and one or more of the compounds of the formula (1)10-02-2008
20110200927ELECTROPHOTOGRAPHIC TONER - An electrophotographic toner, a method of preparing the electrophotographic toner, and an image forming apparatus using the electrophotographic toner. The electrophotographic toner includes a binder resin, a colorant, a releasing agent, and a spherical metal nanoparticle having a volume average diameter of about 10 to about 100 nm.08-18-2011
20080286675METHOD OF PRODUCING POLYMERIZED TONER, METHOD OF PRODUCING BINDER RESIN FOR TONER, AND TONER - The method of producing polymerized toner, the method including: dispersing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium; and polymerizing the polymerizable monomer in the aqueous medium with a polymerization initiator to produce toner particles, and is characterized in that a polymerization initiator which has a specific structure and the hydrogen bond dissociation energies of which satisfy specific relationships is used as the polymerization initiator.11-20-2008
20080305421METHOD FOR PRODUCING RESINOUS PARTICLES - There is provided a method for producing resinous particles, containing: melting a mixture containing a binder resin and at least one additive having a melting point lower than T1/2 of the binder resin so as to prepare a molten material; atomizing resinous particles from the molten material in an atmosphere having a temperature higher than Tg of the binder resin and lower than 3 times of T1/2 of the binder resin; retaining the resinous particles in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 s to 15 s; and cooling and solidifying the resinous particles. There is also provided a method for producing resinous particles containing: melting the mixture so as to prepare a molten material; increasing a specific surface of the molten material in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 3 times of T1/2 of the binder resin, so as to form a precursor; retaining the precursor in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 ms to 10 ms; cooling and solidifying the precursor; and atomizing resinous particles from the precursor.12-11-2008
20080311500TONER FOR DEVELOPING ELECTROSTATIC IMAGE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE TONER - A toner including toner particles including a binder resin; a colorant, a release agent, and a modified layered inorganic material in which at least part of interlayer ions is modified with an organic ion, wherein the toner includes the release agent in an amount of from 3 to 6% by weight based on the total weight of the toner, and concentration of the modified layered inorganic material in a surface portion of the toner is greater than the average concentration thereof in the toner, and wherein the toner is subjected to FTIR-ATR, the ratio (P2850/P828) of the strength of the peak at 2850 cm12-18-2008
20080286674Toner and Method for Producing the Same - A method for producing a toner is described. The method for producing a toner may include the steps of: preparing a resin solution by mixing a binder resin, a colorant and a wax into an organic solvent; preparing an emulsion by heating the resin solution and an aqueous medium to a temperature of not less than a level allowing the wax to dissolve and less than the boiling point of the organic solvent, and mixing the resin solution and the aqueous medium with each other; and preparing a suspension by removing the organic solvent from the emulsion, and aggregating and fusing the suspension.11-20-2008
20090162770COLORED POLYMER PARTICLES, METHOD FOR PRODUCING THE SAME, AND TONER AND DEVELOPER USING THE SAME - A method for producing colored polymer particles, including adding a colorant-containing composition containing a radically polymerizable monomer and a colorant in a supercritical fluid or a subcritical fluid and polymerizing the radically polymerizable monomer, so as to produce colored polymer particles which are insoluble in the supercritical fluid or subcritical fluid, wherein the supercritical fluid or subcritical fluid is a supercritical fluid or subcritical fluid in which at least the radically polymerizable monomer is soluble, but polymer particles resulted from polymerization of the radically polymerizable monomer are insoluble, and wherein the colorant is at least one selected from the group consisting of a pigment, a dye and a polymer dye.06-25-2009
20110223526TONER - The invention is to provide a toner with a small difference of charging properties and an excellent cleaning property. The toner includes toner particles of cylindrical bodies.09-15-2011
20130216943TONER, LIQUID DEVELOPER, DRY DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A toner includes a resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a polymerization initiator.08-22-2013
20110223527Image forming method, image forming apparatus, varnish applicator, and toner - An image forming method including forming a toner image on a transfer medium with a toner comprising a wax having a polar group, and applying a varnish to the toner image. The wax may be a plant wax having an ester group, a wax having a polar group derived from a fatty acid, an oxidized wax, or a mixture thereof. The varnish may include a surfactant, such as a polyoxyethylene glycol, and may be photocurable.09-15-2011
20110229811TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The invention provides a toner for developing an electrostatic image including toner particles having a shape factor SF09-22-2011
20110229812TWO-COMPONENT DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A two-component developer includes: a toner; a carrier having a surface energy of from about 23 dyne/cm to about 37 dyne/cm; and an external additive having a shape factor SF09-22-2011
20090117479Method and apparatus for manufacturing developer, and developer - The invention provides a method and an apparatus for manufacturing a developer, which can manufacture a developer having a uniform and fine particle shape in a narrow particle size distribution and having a coloring agent highly dispersed therein at the primary particle level, the method and apparatus at the same time enabling continuous and efficient production without opening and closing a reactor. The method comprises the steps of: dissolving a binding resin component in a supercritical or subcritical fluid so that the binding resin component is blended with a coloring agent component; and reducing the solubility of the binding resin component in the supercritical or subcritical fluid so that the binding resin component is precipitated in the form of particles with the coloring agent component dispersed in the interior thereof. In the aforementioned method and apparatus, the reactor provided with at least a stirring mechanism and a mechanism for discharging dissolved components has a developer material carrier comprising a mesh that prevents the passage of treated materials and allows the passage of the supercritical or subcritical fluid.05-07-2009
20090155702METHOD FOR PRODUCING DEVELOPING AGENT - After fine particles containing a binder resin and a coloring agent are agglomerated in a dispersion liquid to form agglomerated particles, an inverting agent which inverts a sign of a zeta potential of the agglomerated particles is added to the dispersion liquid to stabilize the agglomerated particles, and then, the agglomerated particles are fused.06-18-2009
20100151372TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE AND METHOD OF PREPARING THE SAME - Provided are toner for developing an electrostatic latent image and a method of preparing the same. The toner has G′(06-17-2010
20120196218TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, METHOD OF PREPARING THE SAME, DEVICE FOR SUPPLYING THE SAME, AND APPARATUS AND METHOD FOR FORMING IMAGE USING THE SAME - A toner for developing an electrostatic charge image includes a core layer including a first binder resin, a colorant and a releasing agent; and a shell layer coating the core layer and including a second binder resin. The first binder resin of the core layer includes a low molecular weight amorphous polyester resin having a weight-average molecular weight of about 6000 g/mol to about 20000 g/mol, a high molecular weight amorphous polyester resin having a weight-average molecular weight of about 25000 g/mol to about 100000 g/mol, and a crystalline polyester resin having a weight-average molecular weight of about 8000 g/mol to about 30000 g/mol. The second binder resin of the shell layer includes the low and high molecular weight amorphous polyester resins.08-02-2012
20130122411DEVELOPER, DEVELOPER CONTAINER, IMAGE FORMATION UNIT, AND IMAGE FORMATION APPARATUS - A developer includes a toner containing at least a binder resin, wherein the toner has a molecular weight distribution Mz/Mw of 2.0 or smaller and a phase angle of viscoelasticity of 65° or greater.05-16-2013
20100261110TONER, TONER PRODUCTION METHOD, AND IMAGE FORMING DEVICE USING THE SAME - A toner, has a number mode diameter of 3 μm or more and 6 μm or lower and a particle size distribution of a toner including an externally-applied agent in the range of 0.6 μm to 400 μm in which the number frequency of a toner smaller than the number mode diameter is smaller than the number frequency of a toner equal to or larger than the number mode diameter.10-14-2010
20100261111TONER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - A toner includes at least a binder resin, a colorant, and a release agent. The toner contains base toner particles having an average volume particle size of 2 μm to 6 μm, small particle silica having an average volume particle size of 7 nm to 15 nm, large particle silica having an average volume particle size of 50 nm to 400 nm, small particle transition alumina having an average volume particle size of 7 nm to 20 nm, and large particle α-type alumina having an average volume particle size of 50 nm to 400 nm or large particle cerium oxide having an average volume particle size of 50 nm to 400 nm.10-14-2010
20100261109TONER, METHOD FOR FORMING IMAGE, AND IMAGE FORMING APPARATUS - A toner includes toner base particles containing at least a binder resin, a coloring agent, and a release agent; and alumina fine particles whose phase angle (θ) is |80°| or less at an alternating current frequency of 1 to 10 kHz in an alternating current impedance method.10-14-2010
20100261113TONER, METHOD FOR FORMING IMAGE, AND IMAGE FORMING APPARATUS - A toner includes toner base particles containing at least a binder resin, a coloring agent, and a release agent and having a volume-average particle size of 2 to 6 μm; a small particle size silica having an average particle size of 7 to 15 nm; a large particle size silica having an average particle size of 50 to 400 nm; and a small particle size transition alumina obtained by a dawsonite method and having an average particle size of 7 to 20 nm.10-14-2010
20100261112TONER, METHOD FOR FORMING IMAGE, AND IMAGE FORMING APPARATUS - A toner includes toner base particles containing at least a binder resin, a coloring agent, and a release agent and having a volume-average particle size of 2 to 6 μm; at least two types of silica each having a different average particle size; at least one type of electron-conductive oxide semiconductor fine particles selected from titania, transition alumina, zinc oxide, and tin oxide; and at least one type of ion-conductive oxide semiconductor fine particles selected from cerium oxide and stabilized zirconia.10-14-2010
20100227265ELECTROPHOTOGRAPHIC TONER - A colorless transparent toner including a binder resin and a layered inorganic mineral, wherein the layered inorganic mineral is an organic modified layered inorganic mineral, in which at least part of ions present between layers are modified with an organic ion.09-09-2010
20130216944TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner contains a binder resin, a colorant, and a releasing agent, wherein the toner contains toner particles, and wherein a proportion of the toner particles containing one or more voids having diameters D08-22-2013
20130216945PIGMENT DISPERSION LIQUID, A METHOD FOR PRODUCING THE PIGMENT DISPERSION LIQUID, A PHOTOSENSITIVE COLOR RESIN COMPOSITION COMPRISING THE PIGMENT DISPERSION LIQUID, AN INK-JET INK COMPRISING THE PIGMENT DISPERSION LIQUID, A TONER FOR ELECTROPHOTOGRAPHIC PRINTING COMPRISING THE PIGMENT DISPERSION LIQUID, AND COLOR FILTER - An object of the present invention is to provide a pigment dispersion liquid which has excellent pigment dispersion stability and high productivity even in the case of using a fine pigment and having high pigment concentration; a method for producing the pigment dispersion liquid; a color resin composition which has excellent pigment dispersion stability, causes no clogging problem, has excellent adhesion, and is able to form color layers with high pigment concentration, with accuracy; and a color filter comprising the resin composition.08-22-2013
20110027710SELF EMULSIFYING GRANULES AND PROCESS FOR THE PREPARATION OF EMULSIONS THEREFROM - A process for making a self-emulsifying granule suitable for use in forming latex emulsions includes contacting a resin with a solid or highly concentrated surfactant, a solid neutralization agent and water in the absence of an organic solvent to form a mixture, melt mixing the mixture, and forming self-emulsifying granules of the melt mixed mixture. Self-emulsifying granules are also provided and configured to form a latex emulsion when added to water, which may then be utilized to form a toner.02-03-2011
20100221653Process for preparing stable photoresist compositions - A composition of matter consisting of a stable solution containing a polymer derived from a solution of a polymer containing trace metals, the derived method comprising the steps of: 09-02-2010
20080311501TONER PARTICLES, METHOD OF MANUFACTURING THE SAME, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - In a raw material mixing step, toner raw materials containing polymerizable monomers, colorant, and a release agent are mixed. In an emulsifying step, the mixture is emulsified under pressure to obtain a polymerizable composition. In a cooling step, the polymerizable composition is cooled down. In a depressurizing step, the polymerizable composition cooled down is depressurized. The polymerizable composition thus obtained has the colorant and the release agent evenly and finely dispersed therein. In a polymerizing step, the polymerizable composition is subjected to polymerization reaction. Toner particles are thus obtained which have uniform final sizes and exhibit a sharp particle size distribution.12-18-2008
20130137028METHOD OF MANUFACTURING TONER CARRIER, DEVICE FOR MANUFACTURING TONER CARRIER, TONER CARRIER, DEVELOPMENT AGENT, AND PROCESS CARTRIDGE - A method of manufacturing toner carrier formed of a core and a cover thereon, including the steps of: coating the core with a liquid cover containing a solvent and a material for forming the cover on the core in a processing tank; heating the core and the cover by first microwave radiation to volatilize the solvent from the cover; and removing the solvent volatilized in the step of heating from the processing tank.05-30-2013
20130137029TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT AND IMAGE FORMING METHOD - Disclosed are a toner for electrostatic image development which is able to realize enough charge stability over a long period of time as deterioration of a toner due to mechanical stress is prevented in a developing unit, and to prevent generation of filming, and an image forming method using the same.05-30-2013
20100316944TONER, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - An electrostatic image developing toner including a resin fine particle, and a toner material containing a polyester-based resin, wherein the electrostatic image developing toner is obtained by dissolving and/or dispersing the toner material containing the polyester-based resin in an organic solvent to prepare a toner material liquid, and dispersing the toner material liquid in an aqueous solvent containing the resin fine particle, and wherein the polyester-based resin contains a polyester resin obtained by polycondensation of an alcohol component with a carboxylic acid component containing a modified purified-rosin.12-16-2010
20110033794TONER, METHOD FOR PRODUCING THE SAME, AND PROCESS CARTRIDGE - A toner containing a binder, a colorant, and a wax having a molecular chain consisting of C—H bond and C—C bond, wherein the mass reduction of the wax at 165° C. is 10% by mass or less, and the total amount of the wax in the toner measured by a DSC method is 1% by mass to 8% by mass, wherein a ratio, Sbet/SF, of a BET specific surface area (Sbet) of the toner to an average circularity (SF) of the toner is 1.0 m02-10-2011
20090068578Binder resin for toner, toner, and method of manufacturing binder resin for toner - A binder resin for toner includes a hybrid resin of a crystalline resin (X) and an amorphous resin (Y), having a peak molecular weight of 30,000 or larger, and an amorphous resin (Z) having a peak molecular weight of smaller than 30,000.03-12-2009
20110244383TONER, AND METHOD FOR PRODUCING THE SAME - A toner including an amorphous resin (R), a crystalline material (A) which is compatible with the amorphous resin (R) and has a melting point of 80° C. or lower, a resin (I) which is different from the amorphous resin (R), and a colorant, wherein the crystalline material (A) is capsulated by the resin (I) and the capsulated crystalline material (A) is present in the amorphous resin (R).10-06-2011
20110244382Hydrophobic silica particles and method of producing same - Hydrophobic silica particles are produced by reacting them with a hydrosiloxane agent.10-06-2011
20100178603DEVELOPER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE, DEVELOPER CARTRIDGE FOR DEVELOPING ELECTROSTATIC LATENT IMAGE, PROCESS CARTRIDGE, AND IMAGE FORMATION APPARATUS - The invention provides a developer for developing an electrostatic latent image, the developer having at least: a transparent toner; and a carrier. The carrier contains at least: a magnetic particle; and a resin coating layer. The resin coating layer coats the surface of the magnetic particle and has cyan color. The invention further provides a developer cartridge storing the developer. The invention further provides a process cartridge storing the developer. The invention further provides an image formation apparatus having at least a color toner image-forming unit, a transparent toner image-forming unit that uses the developer to form a transparent toner image, and a fixing unit.07-15-2010
20100055590TONER, METHOD FOR PRODUCING TONER, AND DEVELOPER - A method for producing a toner including periodically forming and discharging liquid droplets of a toner composition liquid containing at least a resin, a releasing agent and a colorant from a plurality of nozzles formed in a thin film which is provided in a reservoir for the toner composition liquid, by vibrating the thin film using a mechanically vibrating unit, and forming toner particles by solidifying the liquid droplets, wherein the forming toner particles comprises primarily drying the liquid droplets under a stream of dry gas containing an organic solvent whose partial pressure is equal to or higher than 1/10 of a saturated vapor pressure thereof but is equal to or lower than the saturated vapor pressure, the saturated vapor pressure being that at a drying temperature; and secondarily drying the primarily dried liquid droplets for solidification while the organic solvent is being evaporated.03-04-2010
20120244465TONER SET FOR ELECTROSTATIC IMAGE DEVELOPMENT, DEVELOPER SET FOR ELECTROSTATIC IMAGE DEVELOPMENT, PROCESS CARTRIDGE SET, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A toner set for electrostatic image development includes a cyan toner, a magenta toner, and a yellow toner, wherein the Vicat softening temperatures of the toners are respectively in the range of from about 30° C. to about 60° C., and among the toners, the difference between the Vicat softening temperature of the toner having the highest Vicat softening temperature and the Vicat softening temperature of the toner having the lowest Vicat softening temperature is from about 1° C. to about 5° C.09-27-2012
20110177440METHOD OF MANUFACTURING TONER AND TONER MANUFACTURED BY THE METHOD - 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.07-21-2011
20110097656TONER SET, DEVELOPER SET, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A toner set is composed of toners of a plurality of colors that are used in a tandem-type color image forming apparatus. Each of the toners of a plurality of colors includes toner base particles and an external additive. The external additive includes small-diameter silica particles and large-diameter silica particles larger than the small-diameter silica particles. When, of the toners of a plurality of colors, three color toners to be used consecutively for forming the toner image are defined as a first toner, second toner and third toner respectively in order of usage thereof, the average particle diameter of the large-diameter silica particles contained in the second toner is smaller than the average particle diameter of the large-diameter silica particles contained in the first toner and is larger than the average particle diameter of the large-diameter silica particles contained in the third toner.04-28-2011
20110250533TONER FOR ELECTROSTATIC IMAGE DEVELOPER, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - To provide a toner for an electrostatic image developer, including: a core particle obtained by dispersing, in an aqueous medium, an oil phase prepared by dissolving or dispersing at least a binder resin, a colorant and a release agent in an organic solvent; and a shell layer formed of vinyl resin fine particles present on a surface of the core particle, wherein the shell layer has protruding portions formed of the vinyl resin fine particles, and wherein the vinyl resin fine particles contain 80% by mass or more of an aromatic compound which has a vinyl-polymerizable functional group, and a vinyl resin which forms the vinyl resin fine particles has a weight average molecular weight of 8,000 to 16,000.10-13-2011
20110076607TONER, DEVELOPER, TONER ACCOMMODATING CONTAINER, PROCESS CARTRIDGE AND IMAGE FORMING METHOD - A toner including at least one polyester resin serving as a binder resin, a colorant, a releasing agent, and a fixing aid, wherein the fixing aid includes a fatty acid amide-based compound, and the fatty acid amide-based compound is at least one of a fatty acid amide compound having a mono- or higher valent amide bond and a fatty acid amide-based compound having a mono- or higher valent amino group or a hydroxyl group.03-31-2011
20110081608ELECTROPHOTOGRAPHIC TONER AND IMAGE FORMING APPARATUS - A transparent toner for electrophotographic image forming method forming an image on a recording medium with one or more chromatic toner and a transparent toner, including a thermoplastic resin; and a lubricant, wherein the transparent toner has a tangent loss (tan δ) determined by the following formula has a maximum peak value not less than 3 in a range of from 80 to 160° C.:04-07-2011
20110151367ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER - Provided is an electrostatic charge image developing toner capable of reproducing color exhibiting high lightness and chroma, and obtaining a wide color reproduction range. Disclosed is the toner possessing a toner particle containing at least a binder resin and a colorant, wherein the colorant possesses a yellowish color nonfluorescent dye exhibiting a peak wavelength of an absorption spectrum being in a wavelength range of 400-480 nm, and a fluorescent dye exhibiting a peak wavelength of an emission spectrum being in a wavelength range of 480-560 nm, wherein the nonfluorescent dye has a content of 2-8 parts by weight, based on 100 parts by weight of the binder resin, and the fluorescent dye has a content of 0.05-0.2 parts by weight, based on 100 parts by weight of the resin, provided that a content ratio of the nonfluorescent dye to the fluorescent dye is 15-150.06-23-2011
20120148947DEVELOPER, DEVELOPER CONTAINER, IMAGE FORMING UNIT AND IMAGE FORMING APPARATUS - Disclosed is a developer including at least a toner for developing electrostatic latent images. The toner includes toner base particles each containing at least one binder resin, and external additives for adhering to the outer surfaces of the toner base particles. The toner has a first triboelectric charge obtained by blow-off charge measurement at 20% relative humidity and a temperature of 10° C., and a second triboelectric charge obtained by blow-off charge measurement at 80% relative humidity and a temperature of 28° C. An absolute value of the difference between the first and second triboelectric charges is no larger than 20 μC/g.06-14-2012
20110033793TONER PROCESSES - Toners are provided which may be suitable for use in cold fusing pressure apparatus. The toners include low molecular weight amorphous resins having low softening points and low molecular weights, compared with resins utilized in conventional emulsion aggregation toners for low melt fusing applications.02-10-2011
20100119965METHOD FOR PRODUCING POLYMERIZED TONER, POLYMERIZED TONER, METHOD FOR PRODUCING BINDER RESIN FOR TONER AND BINDER RESIN FOR TONER - The present invention provides a method for producing a toner that can suppress the production of the decomposition products derived from a polymerization initiator, and can suppress the remaining presence, in the toner particles, of the unreacted polymerizable monomer and decomposition product residues. On the basis of this method, the present invention provides a toner that is excellent in triboelectric charging stability and can yield stable images over a long term. The present invention provides a method for producing a polymerized toner including a step of producing a polymerized toner particle by dispersing in an aqueous medium a polymerizable monomer composition including at least a polymerizable monomer and a colorant and by polymerizing the polymerizable monomer by using a polymerization initiator in the aqueous medium, the method being characterized in that the polymerization initiator has a structure represented by the following General Formula:05-13-2010
20090317735TONER MANUFACTURING METHOD, A TONER MANUFACTURING APPARATUS, AND A TONER - A toner manufacturing method, a toner manufacturing apparatus, and a toner are disclosed. The toner manufacturing apparatus includes a droplet generating unit that includes a thin film in which plural nozzles are formed, and an annular vibrating unit that is arranged at a perimeter of a deformable domain of the thin film for vibrating the thin film; a storage unit for storing a toner-containing liquid that includes at least a resin and a colorant, and for supplying the toner-containing liquid 12-24-2009
20090317736TONER FOR HYBRID DEVELOPMENT, DEVELOPER FOR HYBRID DEVELOPMENT AND IMAGE-FORMING APPARATUS - A toner for hybrid development, comprising toner particles containing at least a binder resin and a colorant and being charged when made in friction-contact with a carrier; reverse polarity particles that are charged to polarity reversed to the charged polarity of the toner particles when made in friction-contact with the carrier, and have a number-average primary particle size in a range from 95 to 850 nm; and same polarity particles that are charged into the same polarity as the charged polarity of the toner particles when made in friction-contact with the carrier, and have a number-average primary particle size in a range from 80 to 800 nm and a shape factor in a range from 100 to 160; a developer for hybrid development containing the above toner and a carrier; and an image-forming apparatus provided with the developer for hybrid development.12-24-2009
20090053638Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge and image forming apparatus - An electrostatic image developing toner including a binder resin; and a colorant, and satisfying following conditions (1) and (2):02-26-2009
20130196260TONER, DEVELOPER AND IMAGE FORMING APPARATUS - A toner including: a binder resin containing a non-crystalline resin and a crystalline resin; a colorant; and, a releasing agent, wherein the releasing agent has a melting point of 55° C. to 80° C., and wherein the toner satisfies the following Expressions 1 and 2: (Expression 1): 20,000 Pa·s≦G08-01-2013
20110020741RESIN PARTICLE AND METHOD FOR PRODUCING THE SAME - A resin particle having a sufficiently narrow particle size distribution obtainable by using a supercritical fluid, and a production method for obtaining a resin particle having a sufficiently narrow particle size distribution by using a supercritical fluid are provided. The present invention provides a resin particle (C) having a microparticle (A) fixed to or formed as a film on a surface of a resin particle (B) containing a resin (b), wherein the degree of swelling of the microparticle (A) by liquid or supercritical carbon dioxide (X) at a temperature lower than the glass transition temperature or the melting point of the microparticle (A) is 16% or less, and the microparticle (A) is at least one kind selected from the group consisting of a crystalline resin (a1), a noncrystalline resin (a2), and an inorganic compound (a3).01-27-2011
20110053071TONER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - To provide a toner comprising: a binder resin, a colorant, and a releasing agent, wherein the toner has a core shell structure, and wherein the core contains at least one resin selected from the group consisting of a hybrid resin and a polyester resin, where the hybrid resin is a resin in which a polyester resin and a vinyl resin are chemically bonded to each other, and the shell contains a resin prepared by polymerizing at least a styrene monomer and an ester monomer represented by the following General Formula (1):03-03-2011
20100285401CURABLE TONER COMPOSITIONS AND PROCESSES - Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may be prepared by optimizing the particle size of the emulsion, the choice of and amount of aggregating agent utilized, and the solids content of the emulsion.11-11-2010
20110081609TONER - Provided is a toner including toner particles each containing a hinder resin, a colorant, and a wax, and inorganic fine particles, the toner having such a characteristic that a temperature-storage elastic modulus curve at a high frequency shows a characteristic change in its behavior in a specific temperature region with respect to a temperature-storage elastic modulus curve at a low frequency.04-07-2011
20110262850TONER PRODUCING METHOD AND TONER - There is provided a method for producing a toner that includes encapsulated erasable colored fine particles aggregated with fine particles that contain at least a binder resin and a release agent. The method includes: mixing a dispersion of erasable fine particles with an aggregating agent to form an aggregating agent-containing colored fine particle dispersion; and mixing the aggregating agent-containing colored fine particle dispersion with a fine particle dispersion that contains at least a binder resin and a release agent, so as to aggregate the aggregating agent-containing colored fine particles with the fine particles that contain at least a binder resin and a release agent. In this way, the encapsulated colored fine particles are prevented from being released from the resultant toner particles, and an erasable toner can be obtained that has a narrow particle size distribution and that produces less fogging.10-27-2011
20100330482TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE - A toner for electrostatic charge image development includes toner particles and fatty acid metal salt particles. The content of the fatty acid metal salt particles is from 0.2 parts by weight to 5 parts by weight with respect to 100 parts by weight of the toner particles; the weight of fatty acid metal salt particles remaining on a sieve having an opening of 25 μm when the toner is sieved with the sieve having an opening of 25 μm is from 0.015% by weight to 0.300% by weight with respect to the total weight of the toner; and the weight of fatty acid metal salt particles remaining on a sieve having an opening of 45 μm when the toner is sieved with the sieve having an opening of 45 μm is 0.030% by weight or less with respect to the total weight of the toner.12-30-2010
20110256476TONER FOR DEVELOPING ELECTROSTATIC IMAGE AND MANUFACTURING METHOD THEREOF - A toner for developing electrostatic image comprising a toner particle containing a binding resin is disclosed. which, and In the toner the binding resin has a domain-matrix structure composed of a high elastic resin composing a domain and a low elastic resin composing a matrix, an arithmetic mean value of ratio (L/W) of the Length L to Width W of the domains is 1.5 to 5.0, domains having Length L in the range of 60 to 500 nm exist 80 number % or more, and domains having Width Win the range of 45 to 100 nm exist 80 number % or more, in a viscoelastic image of a cross section of the toner particle observed via an atomic force microscope.10-20-2011
20120064447TONER, DEVELOPER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - A toner containing toner particles, each toner particle containing: a releasing agent; a colorant; and a binder resin containing at least a crystalline polyester resin and a non-crystalline polyester resin, wherein in the case where a volume average particle diameter of the toner is defined as Dv, the toner contains a group of the toner particles having 4/5Dv, and a group of the toner particles having 6/5Dv, and wherein an endothermic value A of the crystalline polyester resin at a first temperature increase in DSC of the toner, an endothermic value B of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particle having 4/5Dv, and an endothermic value C of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particles having 6/5Dv satisfy the relation represented by the following formulas:03-15-2012
20120064445IMAGE FORMING APPARATUS AND TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGES - A toner which contains: toner base particles having Dv of 4.0-6.0 μm; and two or more additives on surfaces of the toner base particles, where the additives contains Additives A and B, wherein the toner base particles are obtained by the method containing: dispersing, in an aqueous medium, an oil phase in which at least one of a crystalline polyester resin and a non-crystalline polyester resin is contained in an organic solvent, to prepare a dispersion liquid; and removing the organic solvent from the dispersion liquid, and wherein the Additive A has the largest average primary particle diameter in the additives and has CA of 5-10% where the CA is determined by the formula A, and the Additive B has the smallest average primary particle diameter in the additives and has CB of 45-100% where the CB is determined by the formula B.03-15-2012
20110136052METHOD OF MANUFACTURING TONER AND TONER - A method of manufacturing toner including preparing a first liquid by dissolving or dispersing toner components including one or both of a binder resin and a precursor thereof in an organic solvent; preparing a second liquid by dispersing the first liquid in a first aqueous medium including a dispersant; producing primary particles by removing the organic solvent from the second liquid; washing the primary particles; preparing a third liquid by dispersing the washed primary particles in a second aqueous medium and heating the second aqueous medium while or after dispersing the washed primary particles therein; and producing toner particles by adding a charge controlling agent to the third liquid. This method satisfies the following inequation:06-09-2011
20100159374METHOD FOR MANUFACTURING TONER, TONER, DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - A method for manufacturing a toner includes a pre-mixing step and a coating step. In the pre-mixing step, a secondary aggregate of the fine resin particles is disaggregated, while toner base particles and fine resin particles are mixed and stirred using a rotary stirring apparatus. Thus obtained disaggregated fine resin particles are fixed to the surface of the toner base particle. Thus, a fine resin particle-fixed toner is obtained. The rotary stirring apparatus includes a rotary stirring section, a temperature regulation section, a circulating section, and a spraying section. In the coating step, a liquid is sprayed to the fine resin particle-fixed toner with the spraying section using the rotary stirring apparatus. Thus, a film of the fine resin particles is formed. In the pre-mixing step and the coating step, temperature regulation is conducted in the temperature regulation section.06-24-2010
20100196811HIGHLY DISPERSE METAL OXIDES HAVING A HIGH POSITIVE SURFACE CHARGE - Metal oxides are modified by aminohydrocarbyl-substituted monoalkyltrisiloxy groups in a defined percentage of T08-05-2010
20090202930INFRARED DYE COMPOSITION, INFRARED RAY ABSORBING INK AND ELECTROPHOTOGRAPHIC TONER - An infrared dye composition including at least: a compound (I) whose spectral absorption maximum wavelength is in a range of from 750 nm to 1,050 nm; and a compound (II) whose spectral absorption maximum wavelength is in a range of from 400 nm to 700 nm, wherein, when an absorbance of the infrared dye composition at a spectral absorption maximum wavelength in the range of from 750 nm to 1,050 urn is designated as 1, a maximum absorbance (Dmax) of the infrared dye composition in the range of from 400 nm to 700 nm is 0.5 or lower, and a ratio (Dmax/Dmin) is 10 or lower, and an infrared dye composition excellent in gray balance in the visible light region, and an infrared ray absorbing ink and an electrophotographic toner using the same are provided.08-13-2009
20110262851ELECTROHPHOTOGRAPHIC TONER - Disclosed is an electrophotographic toner containing a binder resin, a coloring agent, and a release agent, having a volume average particle diameter of 7 μm or less, and having an acid value per unit surface area SAV (mgKOH/m10-27-2011
20100239968POLYMER COATED TONER PIGMENTS FOR ELECTROPHOTOGRAPHIC PRINTING - Toner compositions for electrophotographic printing are disclosed, along with methods for making such toners, and printing systems utilizing them. The disclosed process imparts qualities to the toner making it more efficiently and effectively incorporated into printed images.09-23-2010
20130011775TONER AND PROCESS FOR PRODUCTION THEREOF - Disclosed is a toner obtained by coating surfaces of core particles including at least a binder resin having a carboxyl group and a coloring agent with successive coatings of a water-soluble crosslinking agent capable of crosslinking with a carboxyl group and a water-soluble polymer having a carboxyl group, which have been successively applied on the core particles and crosslinked with each other. The thus-formed toner is provided with a good harmony of favorable fixability represented by a low lowest fixable temperature and favorable storage stability represented by little aggregation after standing at 50° C. for 8 hours.01-10-2013
20130011776ERASABLE TONER AND PROCESS FOR PRODUCTION THEREOF - Disclosed is a decolorable toner produced by aggregating dispersed fine particles of a color material containing at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles containing at least a binder resin having a carboxyl group, then adding a compound having a carbodiimide group or an epoxy group reactive with the carboxyl group of the binder resin, and thereafter fusing the aggregate particles, respectively in an aqueous medium. The thus obtained decolorable toner can suppress the generation of fine powder by the release of erasable color material fine particles from the toner particles.01-10-2013
20130011777DECOLORABLE TONER AND PROCESS FOR PRODUCTION THEREOF - Disclosed is a process for production of a decolorable toner, including: aggregating dispersed fine particles of a color material comprising at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles comprising at least a binder resin comprising a polyester resin to form aggregates in an aqueous medium, adding a reactive polymer having an oxazoline group in to the aqueous medium, and fusing the aggregates in the aqueous medium. As a result, it becomes possible to produce a decolorable toner which suppresses the generation of fine powder due to the release of fine particles of an erasable color material from the toner.01-10-2013
20110086301EMULSION AGGREGATION TONER COMPOSITION - A toner composition that includes at least one low molecular weight amorphous polyester resin, at least one high molecular weight amorphous polyester resin, at least one crystalline polyester resin, at least one wax, at least one biocide and at least one colorant, and wherein the toner composition has a minimum fusing temperature of from about 100° C. to about 125° C.04-14-2011
20120040284ELECTROSTATIC IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrostatic image developing toner that includes a toner particle including a binder resin containing a resin selected from an acrylic resin, a styrene-acrylic resin, and a styrene-(meth)acrylic acid ester copolymer. The resin has a crosslinked structure formed by using at least one of boric acid and boric acid derivatives.02-16-2012
20110318683TONER, DEVELOPER, TONER CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner contains a binder resin and a polyalkylene, wherein the following formula is satisfied:12-29-2011
20110318682TONER, DEVELOPER, TONER CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a toner wherein when a solid image formed by the toner is irradiated with incident light at an incident angle of −45° using a goniophotometer, a ratio (A/B) of a reflectance A at a light-receiving angle of +30° to a reflectance B at a light-receiving angle of −30° is about 2 or more and about 100 or less.12-29-2011
20120045716DEVELOPING AGENT AND IMAGE FORMING APPARATUS - According to one embodiment, a developing agent includes a toner particle containing a binder resin and a coloring agent, and additives added onto the surface of the toner particle. The additives contain a silica fine particle having an average circularity of 0.90 or more. In the additives existing on the surface of the toner particle, an existence ratio of an additive having a minor axis a of a primary particle diameter falling within the range of from 30 nm to 70 nm is 70% or more.02-23-2012
20120231382APPARATUS FOR HEAT-TREATING TONER AND METHOD FOR PRODUCING TONER - An apparatus for heat-treating a toner includes a raw-material supply unit configured to supply a toner treatment space with a raw-material toner, a hot-air supply unit configured to heat-treat the raw-material toner in the toner treatment space, a suction and ejection unit configured to eject hot air used for the heat treatment of the raw-material toner, and a waste-heat recovery and supply unit configured to recover heat from the hot air ejected by the suction and ejection unit and supply the hot-air supply unit with the recovered heat.09-13-2012
20120064446IMAGE FORMING APPARATUS - An image forming apparatus includes a developer tank which houses two-component developer containing toner and carrier, and a supply unit which supplies the developer tank with supply developer containing toner and carrier, wherein, when the ratio of mass of inorganic fine particles attached to the carrier contained in the two-component developer to mass of the carrier contained in the two-component developer is A, and when the ratio of mass of inorganic fine particles attached to the carrier contained in the supply developer to mass of the carrier contained in the supply developer is B, the following Formula (1) is satisfied:03-15-2012
20120009514IMAGE FORMING METHOD, TWO-COMPONENT DEVELOPER, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - In the image forming method, at least one color toner image and a transparent toner image are formed using a color developer including a color toner and a carrier and contained in a first developing device, and a second developer including a transparent toner and a carrier and contained in a second developing device. A supplementary developer is supplied at least to the second developing device while discharging excess of the developer in the developing device. The transparent toner includes a lubricant and has a viscoelastic property such that a loss tangent (tan δ), which is defined as a ratio (G″/G′) of loss modulus (G″) to storage modulus (G′), has a peak at a temperature of from 80° C. to 160° C. and the peak has a height of not less than 3.01-12-2012
20120058424ELECTROSTATIC CHARGE DEVELOPING TONER, ELECTROSTATIC CHARGE DEVELOPING DEVELOPER, AND IMAGE FORMING APPARATUS - To provide an electrostatic charge developing toner in which resin fine particles and inorganic fine particles are externally added to toner base particles, wherein the toner base particles include at least binder resin and colorant, the resin fine particles are monodispersed and fixed to surfaces of the toner base particles, and following equations are established: a=70 to 160 nm, b/a=0.2 to 0.5, and c/a=0.6 to 0.8, where “a” represents an average of diameters (nm) of circular surfaces of contact between the fixed resin fine particles and toner base particle surfaces, “b” represents an average of heights (nm) of the resin fine particles from the contact surfaces, and “c” represents an average diameter (nm) of the resin fine particle at the height b/2.03-08-2012
20120058425TONER, PREMIX AGENT, AND AGENT CONTAINER - A toner including a release promoter and a binder resin containing crystalline polyester resin and non-crystalline polyester resin, wherein W/R is 0.045 to 0.850 where W denotes height of third bottom peak in infrared absorption spectrum of crystalline polyester resin and R denotes height of maximum top peak in infrared absorption spectrum of non-crystalline polyester resin, each of the infrared absorption spectra being measured by infrared spectroscopic method (KBr method) using Fourier transform infrared spectrometer, wherein the toner is used as toner contained with carrier in premix agent which is developer containing them previously mixed together before shipment, and wherein the premix agent is used in an image forming apparatus containing latent image bearing member, developing device for developing latent image on the latent image bearing member with developer containing toner and carrier, and agent supplying unit configured to supply the premix agent to the developing device.03-08-2012
20120058423CONTACT DEVELOPING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A contact developing method including supplying a two-component developer to an electrostatic latent image on a rotating image bearing member by rotating a developing sleeve and a rotatable magnet having multiple magnetic poles provided inside the developing sleeve, to develop the electrostatic latent image into a toner image. The developing sleeve and the image bearing member rotate in the same direction while facing each other. The two-component developer comprises a non-magnetic toner and a carrier. The carrier comprises a magnetic core particle and a resin layer covering the magnetic core particle. The resin layer comprises a conductive particle and a resin. The conductive particle comprises an alumina-based material and a conductive layer covering the alumina-based material. The resin is obtained by heating a copolymer comprising a monomer A unit and a monomer B unit.03-08-2012
20120156604ELECTROPHOTOGRAPHIC CLEAR TONER AND IMAGE FORMING METHOD - Provide is a clear toner having a wide fixing temperature latitude so as to improve the degree of glossiness in a wide range of image density areas, from a white portion to a high image density portion, while ensuring sufficient fixing performance and color mixing in color portions. The clear toner has a storage elastic modulus G′ (130) of 1.0×1006-21-2012
20120156603TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - A toner for electrostatic image development containing an external additive comprising composite oxide particles made of titania and silica (external additive A), and hydrophobic silica particles (external additive B), wherein the external additive A has a core-shell structure in which a core portion is made of titania and a shell portion is made of silica, wherein the titania is contained in the external additive A in an amount of from 75 to 95% by weight, and wherein the external additive B has a carbon content of from 2.8 to 6.0% by weight. The toner for electrostatic image development of the present invention is suitably used in, for example, the development or the like of latent image formed in electrophotography, an electrostatic recording method, an electrostatic printing method, or the like.06-21-2012
20120156602TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - A toner for electrostatic image development containing toner matrix particles having at least a resin binder and a colorant, and an external additive, the external additive having composite oxide particles (an external additive A) that have titania and silica, wherein the external additive A has a core-shell structure in which a core portion has the titania and a shell portion has the silica, wherein the titania is present in the external additive A in an amount of from 75 to 95% by weight, and the resin binder comprising a polyester obtained by polycondensing a carboxylic acid component comprising an isophthalic acid compound and an alcohol component (a polyester A).06-21-2012
20120156601TONER FOR DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER FOR ELECTROSTATIC IMAGE, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image, including: toner particles containing at least a binder resin, a release agent, and a colorant; and an external additive having a volume average particle diameter (d) of from 70 nm to 400 nm, a ratio (d/σ) of the volume average particle diameter (d) to a standard deviation (σ) of a volumetric basis particle diameter of from 2.0 to 12, and an average circularity of from 0.5 to 0.9.06-21-2012
20110076606TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - There is provided a toner for electrostatic latent image developing, which includes a binder resin; a carbon black-surface treated with an isocyanate compound including a plurality of isocyanate groups which include one or more isocyanate groups that are not bonded to the carbon black; and a release agent having an acid value of about 5 mgKOH/g or higher and/or a hydroxyl value of about 5 mgKOH/g or higher.03-31-2011
20110091800TONER FOR ELECTROPHOTOGRAPHY AND DEVELOPER - Toner for electrophotography contains toner base particles containing a binder resin, a colorant, and a wax, resin particles containing a binder resin and a wax, but substantially not containing a colorant, and an external additive that is externally added to the toner base particles and the resin particles, with a mean domain diameter of the wax in the resin particles being larger than a mean domain diameter of the wax in the toner base particles.04-21-2011
20110086303TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner composition includes toner particles including: an unsaturated polymeric resin, such as amorphous resins, crystalline resins, and combinations thereof; an optional colorant; an optional wax; an optional coagulant; and an IR absorber. The use of an IR absorber may permit formation of color toners that have uniform gloss and crease properties, i.e., the IR absorbers may prevent gloss and crease differences between color and black toners.04-14-2011
20110086302TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner composition includes toner particles including: an unsaturated polymeric resin, such as amorphous resins, crystalline resins, and combinations thereof; an optional colorant; an optional wax; an optional coagulant; and an IR absorber. The use of an IR absorber may permit formation of color toners that have uniform gloss and crease properties, i.e., the IR absorbers may prevent gloss and crease differences between color and black toners.04-14-2011
20110065035ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTRATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrostatic charge image developing toner including: toner particles including a binder resin and a colorant; polytetrafluoroethylene particles in which a content of perfluorooctanoic acid and a salt thereof is 0.5 ppm or less; and silica particles in which a content of water is from 0.1% by weight to 10% by weight at an ambient temperature of 20° C. and an ambient humidity of 20%.03-17-2011
20110065034TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE - A toner for electrostatic charge image development, the toner includes a binder resin, the binder resin includes an amorphous polyester resin having alkenyl groups and a crystalline polyester resin, about 5% or more of the alkenyl groups have a branched structure, and the o crystalline polyester resin has an ester concentration (M) obtained by the following Equation of from about 0.04 to about 0.08:03-17-2011
20120122026DEVELOPER FOR ELECTROSTATIC PHOTOGRAPHY, PROCESS CARTRIDGE FOR IMAGE FORMING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A developer for electrostatic photography, includes: a toner containing toner particles containing a colorant and a binder resin, and an external additive having a number average particle diameter of about 100 nm or more and about 800 nm or less; and rugged particles having a rate of ruggedness represented by formula (1) of about 30% or more and about 70% or less:05-17-2012
20120315572METHOD OF PREPARING CARRIER FOR ELECTROPHOTOGRAPHY, CARRIER FOR ELECTROPHOTOGRAPHY, DEVELOPER FOR ELECTROPHOTOGRAPHY, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A method of preparing carrier for electrophotography, which includes a core material and a coating material layer formed on the surface of the core material, including coating a coating material of the coating material layer on the core material; and burning the coating material by an induction heater, wherein the induction heater applies an alternative current to parallely-located plural coil circuits including a conductive wire including the shape of a coil to generate a magnetic line changing its direction and intensity for inductively heating the core material to heat the coating material.12-13-2012
20090130579DEVELOPING AGENT AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a developing agent includes forming a toner particle by adding an aggregating agent to a dispersion containing fine particles containing a binder resin and a colorant to allow aggregation and melt adhesion to occur, wherein the pH of the dispersion satisfies the formula (1) below, when denoting pH before the addition of the aggregating agent by pH(A), the pH of the dispersion after the addition of the aggregating agent by pH(B), and the pH of the dispersion after the melt adhesion by pH(C):05-21-2009
20090130578TONER AND PROCESS OF PRODUCTION OF THE SAME - [Problems] To provide a toner superior in shelf stability, not giving off an offensive odor and degrading the surrounding environment when used for printing, and superior in durability at the time of use for continuous printing under high temperature, high humidity conditions.05-21-2009
20100248112TWO-COMPONENT DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMATION APPARATUS - A two-component developer including a yellow toner and a carrier, the yellow toner including at least one of C. I. Pigment Yellow 155 or C. I. Pigment Yellow 185, and an azo pigment, the carrier including a first resin, magnetic particles dispersed in the first resin, and elements of Cu, Zn, Ni and Mn each in an amount of from 0 to about 2,000 ppm.09-30-2010
20100248111PARTICLE DISPERSION LIQUID, PARTICLES, PARTICLE DISPERSION LIQUID CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - The present invention provides a particle dispersion liquid including (meth)acrylic resin-containing hydrophobic particles, an acetylene glycol surfactant adsorbed to the hydrophobic particles, and water; the particle size, in a state of being swollen due to absorbing water until saturation, of the hydrophobic particles to which the acetylene glycol surfactant has been adsorbed being 1.1 to 2 times as large as the particle size of the hydrophobic particles in a dried state.09-30-2010
20100248115Method for Producing Toner - Provided is a method for producing a toner having excellent particle size distribution and storage stability. The method set forth in the present specification is a method for producing a toner by aggregating and fusing base microparticles whose main component is a binder resin including anionic groups, wherein an aggregate is produced by aggregating the base microparticles in a base microparticle suspension, in a presence of a non-ionic surfactant such that a surface tension of an aqueous solution thereof is not lower than 45 mN/m at any concentration at or above a critical micelle concentration, and the toner is produced through fusion of the aggregate. According to this method, drops in a glass transition temperature of the toner can be curbed, and the toner having excellent storage stability and good particle size distribution can be obtained.09-30-2010
20100248109CARRIER FOR REPLENISHMENT, DEVELOPER FOR REPLENISHMENT, DEVELOPER CARTRIDGE FOR REPLENISHMENT, AND IMAGE FORMING APPARATUS - The present invention provides a carrier for replenishment including an associated particle in which single particles each having a core material and a resin layer covering the core material, are bound via the resin layer, the carrier being used in a developer for replenishment of a trickle development system, and the system including performing development while the developer for replenishment is replenished, upon development of a latent image on a latent image holding member using a development unit.09-30-2010
20100248114METHOD OF MANUFACTURING TONER, TONER OBTAINED BY METHOD THEREOF, ONE-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - There are provided a toner manufacturing method of manufacturing a toner which has excellent characteristics such as fluidity and preservation stability and in which a resin layer having uniform thickness is formed on a surface of tone core particle, a toner obtained by a method thereof, a one-component developer, a two-component developer, a developing device, and an image forming apparatus. By using a toner manufacturing apparatus, a stirring step S09-30-2010
20100248113CARRIER COATED WITH RESIN FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIER COATED WITH RESIN - A carrier coated with a resin for an electrophotographic developer in which a carrier particle surface is coated with the resin and the coating resin contains a lithium salt, and an electrophotographic developer using the carrier coated with the resin.09-30-2010
20100248110TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The invention provides a toner for electrostatic image development, containing a toner particle and external additive particles adhered to the surface of the toner particle, each of the external additive particles being constituted of plural irreversibly coalesced primary particles.09-30-2010
20120171603COATING COMPOSITION INCLUDING FLUORESCENT MATERIAL FOR PRODUCING SECURE IMAGES - A coating composition, system, and method for printing documents that are difficult to chemically or physically forge and that are easy to visually verify are disclosed. The system includes a substrate, a toner, including a colorant and a dye, a coating including fluorescent material, e.g., a primary migration-enhancing coating, applied using an offset printing process and optionally a secondary migration-enhancing coating applied using an offset printing process. An image formed using the toner of the invention is readily verified by comparing a colorant-formed image and a dye-formed image and/or to a reverse negative imaged formed by the dye quenching the fluorescent material. 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.07-05-2012
20120214095Image Forming Apparatus And Method, And Toner, Developer And Process Cartridge For Forming Image - An image forming apparatus including an image forming device forming a toner image on a recording material, and a fixing device including an endless fixing belt feeding the recording material at a speed of 400 to 1,700 mm/sec while heating to fix the toner image thereon. The fixing belt has a rubber layer located on a substrate and having thickness of 400 μm to 700 μm, and a fluorine-containing resin layer located on the rubber layer and having thickness of 2 μm to 20 μm. The toner includes a release agent including a microcrystalline wax and/or a synthetic ester wax, and a binder resin including a crystalline polyester and an amorphous polyester. The ratio (W/R) of the height (W) of the third falling peak of the crystalline polyester to the height (R) of the maximum rising peak of the amorphous polyester in the FT-IR spectrum of the toner is 0.045 to 0.850.08-23-2012
20120171602TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, AND APPARATUS AND METHOD FOR FORMING IMAGE USING THE SAME - Disclosed is a toner for developing an electrostatic charge image, including a toner particle coated with a combination of sol-gel silica particles, hydrophobically surface-treated fumed silica particles, and hydrophobically surface-treated titanium dioxide particles.07-05-2012
20120077119ORANGE TONER AND TONER CARTRIDGE FOR STORING THE SAME, ORANGE DEVELOPER AND PROCESS CARTRIDGE FOR STORING THE SAME, COLOR TONER SET, AND IMAGE FORMING APPARATUS - An orange toner including a binder resin containing a polyester resin having a dodecenyl succinic acid structure as a constituent unit; and C.I. Pigment Orange 38 in a blending amount of from 5% by mass to 18% by mass relative to the whole mass of the toner and a toner storage container for storing the same, an orange developer and a process cartridge for storing the same, a color toner set, and an image forming apparatus.03-29-2012
20120077117YELLOW TONER, DEVELOPING AGENT, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING PROCESS - The invention provides a yellow toner including toner particles comprising colorants and a binder resin, the colorants including at least a C. I. Pigment yellow 180 and a carmine-based pigment, a weight ratio of the C. I. Pigment yellow 180 to the carmine-based pigment being from about 99:1 to about 10,000:1, the binder resin being a polyester resin comprising a first repeating unit derived from a first diol compound, and the first diol compound being a bisphenol A ethylene oxide represented by the following formula (1):03-29-2012
20120251937TONER FOR DEVELOPING ELECTROSTATIC IMAGE, METHOD OF PRODUCING TONER, CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image, includes: colored particles containing a colorant and a binder resin, and two or more kinds of inorganic particles that are externally added to a surface of the colored particles, in which the two or more kinds of inorganic particles contain titanium-containing particles and silica-containing particles, an exposure ratio of the surface of the colored particles is about 25% or less, and a ratio of the silica-containing particles that are in contact with the colored particles is about 10% by number or less.10-04-2012
20120251935TONER FOR ELECTROPHOTOGRAPHY, DEVELOPER FOR ELECTROPHOTOGRAPHY, TONER CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - There is provided a toner for electrophotography containing at least a binder resin, a colorant and a barium compound, and having a relaxation modulus G(t) of from about 2.0×1010-04-2012
20110097658ELECTROPHOTOGRAPHIC TONER - The present invention provides an electrophotographic toner comprising a polyester resin as binder resin and a colorant, said polyester resin being the condensation product of at least one polyhydric alcohol with at least one polybasic acid, wherein said at least one polyhydric alcohol comprises cyclohexanedimethanol, said toner having a loss modulus of from 2×1004-28-2011
20090061342Toner compositions - The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a buffer may be added to materials utilized to produce a latex and reduce the particle size of the resulting latex particles and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the buffer.03-05-2009
20120225377PARTICLE PRODUCING METHOD, PARTICLE, TONER, DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PARTICLE PRODUCING METHOD - A particle producing method is provided including bringing a material into contact with a compressible fluid to prepare a melt of the material, and discharging the melt from a vibrated through hole to form particles of the melt. A particle producing apparatus is also provided including a discharger to discharge the melt. The discharger includes a storage to store the melt, at least one through hole disposed on the storage, and a vibrator to vibrate the through hole. The particle producing apparatus further includes a particle forming member defining a space within which the discharged melt is formed into particles and a pressure controller controlling a pressure difference between the space and an inside of the storage so that the discharged melt is formed into a columnar melt and the columnar melt is constricted and separated into particles.09-06-2012
20120082927TWO-COMPONENT DEVELOPER AND IMAGE FORMING METHOD - A two-component developer includes a toner and a resin-coated carrier. To the toner, a plurality of types of external additives each of which has a different average primary particle size are externally added, at least one type of the external additives having an average primary particle size of 0.1 μm or more. The resin-coated carrier includes a carrier core formed of ferrite having a volume average particle size of 25 μm or more and 90 μm or less, and a resin coating layer that is formed on the surface of the carrier core and contains a magnetic fine particle having a volume average particle size of 0.1 μm or more and 2 μm or less and a silicone resin, wherein 40 parts by weight or more and 100 parts by weight or less of the magnetic fine particle based on 100 parts by weight of the silicone resin are contained.04-05-2012
20120082926TONER, TONER SET, DEVELOPER, DEVELOPER SET, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - A toner comprising an amorphous polyester, a crystalline polyester that is forming domains in the toner, and a colorant that is being dispersed at least in the domains of the crystalline polyester. The toner may be obtained by dispersing an oil phase including the amorphous polyester or a precursor capable of producing the amorphous polyester, the crystalline polyester, the colorant, and an organic solvent, in an aqueous medium to prepare an O/W dispersion, the oil phase; and removing the organic solvent from the O/W dispersion.04-05-2012
20120264042METHOD OF PREPARING CARRIER FOR ELECTROPHOTOGRAPHY - A method of preparing a carrier for electrophotography, including a core material and a coating material layer formed on the surface of the core material, including: 10-18-2012
20120264041POLYESTER RESIN FOR TONER, TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A polyester resin for a toner containing: a repeating unit derived from a dicarboxylic acid component; and a repeating unit derived from a diol component represented by Formula (1):10-18-2012
20120258392PROCESS FOR PRODUCTION OF ELECTROPHOTOGRAPHIC TONER - A method for producing an electrophotographic toner, including (1) a step of preparing a thermally treated resin particle dispersion by retaining, for one hour or longer at a temperature satisfying a specific formula, a dispersion of resin particles (A) having a volume median particle size of 0.02 μm to 2 μm and containing a resin containing a crystalline polyester (a1) in an amount of 1 to 50 wt % and an amorphous polyester (b1); (2) a step of preparing an aggregated particle dispersion by aggregating thermally treated resin particles contained in the thermally treated resin particle dispersion prepared through step 1; (2a) a step of preparing resin-fine-particle-attached aggregated particles by adding, to the aggregated particle dispersion prepared through step 2, a dispersion of resin fine particles (B) containing an amorphous polyester (b2) in an amount of 70 wt % or more; and (3) a step of unifying the resin-fine-particle-attached aggregated particles prepared through step 2a.10-11-2012
20110123916ELECTROPHOTOGRAPHIC TONER - A decolorable electrophotographic toner, containing a color former compound, a color developing agent, a binder resin, and a release agent, wherein the toner has a pH of from 6 to 9 when dispersed in water with a pH of from 5.5 to 7 at a mass ratio of toner/water of 1/10.05-26-2011
20120231383RESIN FOR TONER, TONER USING THE RESIN, AND DEVELOPMENT AGENT USING THE TONER - A resin for toner containing a polyhydroxy carbonate skeleton and a rigid skeleton.09-13-2012
20120231381ELECTROSTATIC IMAGE DEVELOPING TONER, TONER CARTRIDGE, ELECTROSTATIC IMAGE DEVELOPER, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrostatic image developing toner including: a toner particle containing a coloring agent and a binder resin; and an external additive having a volume average particle diameter of from 70 nm to 400 nm, an average circularity of from 0.5 to 0.9 and a standard deviation of circularity of not more than 0.2.09-13-2012
20120322001DEVELOPING AGENT AND IMAGE FORMING APPARATUS - According to one embodiment, a developing agent includes a toner core particle containing a binder resin having a carboxyl group and a coloring agent and a surface layer formed on the toner core particle. The surface layer is formed by crosslinking the toner core particle, a water-soluble polymeric crosslinking agent which crosslinks with a carboxyl group and a water-soluble polymer having a carboxyl group in an aqueous medium. The developing agent can be fixed by a fixing device having a release oil applied thereto.12-20-2012
20120270145ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPING DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes a binder resin that contains an amorphous polyester resin and a colorant. The toner satisfies the following expressions: 20 μS/cm≦ρ≦150 μS/cm, and 0.0110-25-2012
20110236814CARRIER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, DEVELOPER FOR ELECTROSTATIC CHARGE IMAGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A carrier for developing an electrostatic charge image, including a core, and a coating layer including a resin and inorganic oxide particles that exhibit electroconductivity, by which the core is coated, wherein the inorganic oxide particles have, when they are aggregated, an aggregation size of or when they are not aggregated, a primary particle size of, from 230 nm to 970 nm.09-29-2011
20110236813ELECTROPHOTOGRAPHIC DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic developer is provided which includes: a toner that includes toner base particles and an external additive attached to a surface of the toner base particles and has an amount of Al on the surface of the toner base particles of from about 0.002 to about 0.02 atm %; and a carrier that includes magnetic particles and a coating resin layer that coats the magnetic particles, the coating resin layer including particles with a volume-average particle diameter of from about 80 to about 800 nm, such as organic particles or inorganic particles having an organic layer on a surface of the inorganic particles, the carrier satisfying any one of the following formulas, where SP1, SP2 and SP3 represent a solubility parameter of resin of the coating resin layer, the organic particles, and the organic layer respectively:09-29-2011
20100233605TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE - A toner for electrostatic charge image development has toner mother particles including a release agent, a colorant, and a binder resin including a crystalline resin, and an external additive to the toner mother particles including at least metatitanic acid and at least one selected from the group consisting of silicon oxide and fluoropolymer particles, and the addition weight ratio of the metatitanic acid to the at least one selected from the group consisting of silicon oxide and fluoropolymer particles is from 1:0.08 to 1:8.30 is provided.09-16-2010
20100233604ELECTROSTATIC IMAGE DEVELOPING TONER, METHOD FOR MANUFACTURING ELECTROSTATIC IMAGE DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS - An electrostatic image developing toner, includes: a block copolymer that contains: a block A that has a glass transition temperature of about 60° C. or more; and a crystalline block B that has a melting point of about 25° C. or more derived from an ethylenically unsaturated compound, wherein the block copolymer satisfies the following equations (1) to (3):09-16-2010
20120328976TONER, METHOD FOR PRODUCING THE SAME, AND IMAGE FORMING APPARATUS - A toner including: a base resin; and charge-controlling resin particles contained in the base resin, wherein the toner is in shape of particles, and the charge-controlling resin particles are present in a region of each toner particle which is 500 nm in depth from a surface of the toner particle and an average of amounts of the charge-controlling resin particles present in the regions of the toner particles is 20% by volume to 70% by volume, wherein an average of embedment rates of the charge-controlling resin particles in the toner particles is 90% or higher, where each embedment rate is an average of embedment rates of the charge-controlling resin particles in each toner particle, and wherein the charge-controlling resin particles have a charge amount of 60 μC/m12-27-2012
20120328975PERIMIDINE-BASED SQUARYLIUM DYE, DYE-CONTAINING COMPOSITION, AND IMAGE-FORMING MATERIAL - A perimidine-based squarylium dye contains a compound represented by Formula (I),12-27-2012
20100203437ELECTROPHOTOGRAPHIC TONER, INVISIBLE ELECTROPHOTOGRAPHIC TONER, ELECTROPHOTOGRAPHIC DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMATION APPARATUS - The invention provides an electrophotographic toner containing at least a binder resin and an infrared absorber, the infrared absorber comprising a perimidine-squarylium dye represented by the following Formula (1). The invention further provides an invisible electrophotographic toner containing at least a binder resin and an infrared absorber, the infrared absorber containing at least a perimidine-squarylium dye represented by Formula (1). The invention further provides an electrophotographic developer containing at least the invisible electrophotographic toner The invention further provides a toner cartridge containing at least the invisible electrophotographic toner. The invention further provides a process cartridge equipped with at least a developer holder and having at least the electrophotographic developer. The invention further provides an image forming apparatus having at least a developing unit which develops an electrostatic latent image with the electrophotographic developer to form a toner image.08-12-2010
20130011774ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - An electrostatic latent image developing toner includes: a release agent; a pigment; and a binder resin. The content of the pigment is from about 10% by weight to about 50% by weight, the glass transition temperature (Tg) of the toner is in the range of from about −60° C. to about 20° C., and the Young's modulus at 20° C. is in the range of from about 1×1001-10-2013
20130017480TONER SET FOR ELECTROPHOTOGRAPHY, AND IMAGE FORMING METHOD AND APPARATUSAANM SUZUKI; KazumiAACI ShizuokaAACO JPAAGP SUZUKI; Kazumi Shizuoka JPAANM MORITA; TatsuyaAACI KanagawaAACO JPAAGP MORITA; Tatsuya Kanagawa JPAANM SAKASHITA; ShingoAACI ShizuokaAACO JPAAGP SAKASHITA; Shingo Shizuoka JP - A toner set for electrophotography, including a black toner; a yellow toner; a magenta toner; a cyan toner; and a bright yellow toner, wherein the magenta toner includes a magenta colorant mainly including C.I. Pigment Red 122, the yellow toner has a hue angle of from 93 to 100° and the bright yellow toner has a hue angle of from 60 to 85° in L*a*b* color system.01-17-2013
20110159423METHOD FOR PRODUCING RESINOUS PARTICLES - There is provided a method for producing resinous particles, containing: melting a mixture containing a binder resin and at least one additive having a melting point lower than T1/2 of the binder resin so as to prepare a molten material; atomizing resinous particles from the molten material in an atmosphere having a temperature higher than Tg of the binder resin and lower than 3 times of T1/2 of the binder resin; retaining the resinous particles in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 s to 15 s; and cooling and solidifying the resinous particles. There is also provided a method for producing resinous particles containing: melting the mixture so as to prepare a molten material; increasing a specific surface of the molten material in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 3 times of T1/2 of the binder resin, so as to form a precursor; retaining the precursor in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 ms to 10 ms; cooling and solidifying the precursor; and atomizing resinous particles from the precursor.06-30-2011
20110159422WHITE TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, ELECTROSTATIC IMAGE DEVELOPING AGENT, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The present invention provides a white toner for electrostatic image development, including a binder resin, a first white pigment and a second white pigment, the specific gravity D06-30-2011
20110159421Production of Toner for Use in Printing Applications - 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.06-30-2011
20130171550TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - To provide a toner including at least a binder resin and a colorant, 07-04-2013
20130143151ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes: bright pigment particles; and a binder resin, and the electrostatic charge image developing toner has a main peak and at least one peak or shoulder that is higher in molecular weight than the main peak in a molecular weight distribution of a tetrahydrofuran-soluble component that is obtained through gel permeation chromatography measurement, and satisfies the following formula: 2≦A/B≦100, wherein A is reflectance at an acceptance angle of +30° that is measured when a solid image is formed using an electrostatic charge image developing toner and the image is irradiated with incident light at an incidence angle of −45° by the use of a variable-angle photometer, and B is reflectance at an acceptance angle of −30° that is measured when the image is irradiated with incident light at an incidence angle of −45° by the use of a variable-angle photometer.06-06-2013
20120251938METHOD FOR PRODUCING COLORED RESIN PARTICLES, COLORED RESIN PARTICLES, DEVELOPER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - A method for producing colored resin particles including: dissolving or dispersing at least binder resin and colorant in organic solvent to prepare oil phase; dissolving resin A and basic compound in aqueous medium to prepare aqueous phase, the resin A having solubility <2.0 g/100 g water having temperature 25° C. and pH 3.0 and solubility ≧2.0 g/100 g water having temperature 25° C. and pH 10.0; dispersing the oil phase in the aqueous phase to prepare core particle dispersion liquid; dispersing resin particles in aqueous medium to prepare resin particle dispersion liquid, and adding the resin particle dispersion liquid to the core particle dispersion liquid so that the resin particles are attached onto the core particles, to prepare dispersion liquid containing particles each having the core particle and the resin particles attached thereonto; removing the organic solvent from the dispersion liquid; washing the particles; and drying the particles.10-04-2012
20120251936TONER FOR DEVELOPING ELECTROSTATIC IMAGE, METHOD OF PRODUCING TONER, CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image, includes: colored particles containing a colorant and a binder resin, and two or more kinds of inorganic particles that are externally added to a surface of the colored particles, in which the two or more kinds of inorganic particles contain titanium-containing particles and silica-containing particles, an exposure ratio of the surface of the colored particles is about 25% or less, and a ratio of the titanium-containing particles that are in contact with the colored particles is about 15% by number or less.10-04-2012
20130095419DEVELOPER AND IMAGE FORMING APPARATUS - A developer according to an embodiment includes toner particles, wherein the toner particles contain an amorphous polyester resin, a crystalline polyester resin, a coloring material, and a charge control agent containing metal elements of aluminum and magnesium, and have an endothermic peak temperature as measured by a differential scanning calorimeter (DSC) of from 90 to 100° C. and an acid value of from 9 to 19 mgKOH/g.04-18-2013
20130115551ELECTROPHOTOGRAPHIC TONER, A PRINTING SYSTEM FOR APPLYING SAID TONER ON AN IMAGE RECEIVING MEDIUM AND A METHOD FOR PREPARING SAID TONER - The invention relates to a toner for developing a toner image, the toner comprising a binder resin, a colorant, a first wax and a compatibilizer. The wax is finely dispersed within the toner. The compatibilizer has a melting transition, wherein the lower temperature limit of the melting transition is between 110° C. and 140° C. at the time of temperature rise in the DSC curve measured using a differential scanning calorimeter. The invention further relates to a printing system for applying the toner according to the present invention on an image receiving medium. The invention further relates to a method for preparing the toner according to the present invention.05-09-2013
20130115550TONER AND IMAGE FORMING APPARATUS - A toner including a core particle and projections at a surface of the core particle is provided. The core particle includes a binder resin and a colorant. The binder resin includes a crystalline resin as a major component. Each of the projections consists of a fine resin particle. An average length of long sides of the projections is not less than 0.15 μm and less than 0.5 μm. A standard deviation of lengths of the long sides of the projections is 0.2 or less. A surface coverage of the toner with the projections is within a range of 30 to 90%.05-09-2013
20130115549Low dielectric additives for toner - The present disclosure describes toner compositions containing an additive package including one or more additives that exhibit low dielectric loss, which toners exhibit improved tribo charging, 205-09-2013
20130101932ELECTROPHOTOGRAPHIC TONER - Provided is an electrophotographic toner which can be decolorized, including: toner particles containing a binder resin, a color-forming compound, and a developer; and a cellulose fiber which is contained in the toner particles or is attached to the toner particles.04-25-2013
20130101931TONER AND METHOD FOR PRODUCING THE SAME, AND TWO-COMPONENT TYPE DEVELOPER - A toner containing toner base particles and an external additive, wherein regions with different tribocharging polarities with respect to a magnetic carrier are present in a domain-matrix structure on the surface of the toner base particles. The island region B has a predetermined height, the external additive has a reverse polarity to the region B in terms of tribocharging polarity to the magnetic carrier, the external additive contains a first external additive having a number-average primary particle size of 80-150 nm and a second external additive having a number-average primary particle size of 10-60 nm, and an average coverage Cb (%) with the first external additive in the region B is 27-100% and a coverage Ca (%) with the first external additive in the sea region A is 12% or less.04-25-2013
20130101930CARRIER FOR ELECTROSTATIC LATENT IMAGE DEVELOPER, ELECTROSTATIC LATENT IMAGE DEVELOPER FORMED OF CARRIER AND TONER, AND PROCESS CARTRIDGE USING THE DEVELOPER - A carrier for developing an electrostatic latent image, including a particulate core material having a magnetism having developed spontaneous magnetization; and a covering layer comprising an electroconductive material, covering the surface of the particulate core material, wherein the carrier has an electrical resistivity Log R [Ωcm] of from 8.0 to 12.0 when measured by a method, including filling the carrier in a cell containing a pair of facing electrodes, each having a surface area of 2×4 [cm04-25-2013
20100279221RESIN-COATED CARRIER METHOD OF MANUFACTURING THE SAME, TWO-COMPONENT DEVELOPER INCLUDING RESIN-COATED CARRIER, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm11-04-2010
20110223525TONER HAVING POLYESTER RESIN - Embodiments include a toner having a polyester resin derived from diacids and diesters, in combination with at least one diol, in embodiments a cycloaliphatic diol, an optional crystalline resin, an optional colorant, and an optional wax.09-15-2011
20110236812ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, ELECTROSTATIC LATENT IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrostatic latent image developing toner includes a mother particle which contains a coloring agent, a release agent and a binder resin; and an inorganic particle which is added to the surface of the mother particle, and wherein a relation between a relaxation time t and a relaxation modulus G(t) which are determined from the dynamic viscoelasticity measurement made on the toner satisfies the following equations (1) and (2);09-29-2011
20130157183DEVELOPER FOR ELECTROPHOTOGRAPHY, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - A developer, including a toner including a binder resin comprising a crystalline resin; and a colorant, and a resin carrier comprising a resin; a magnetic particulate material having a magnetic anisotropy, dispersed in the resin, and having a saturated magnetization of from 16 to 30 emu/g, a coercive force of from 15 to 40 kA/m and an average particle diameter not less than 15 μm and less than 100 μm.06-20-2013
20130189611RESIN COMPOSITION, IMAGE-FORMING MATERIAL, AND IMAGE-FORMING METHOD - Provided is a resin composition containing a pyrylium-based squarylium compound represented by the following Formula (I) and a resin,07-25-2013
20130115548Alkyl silane surface treated silica for toner - The present disclosure describes toner compositions comprising an alkyl surface-treated silica, which toners exhibit improved tribo-charging, second transfer efficiency and IQ without impacting color.05-09-2013
20120021347TONER, METHOD FOR FORMING TONER, DEVELOPER, AND IMAGE FORMING METHOD - To provide a toner A containing: base particles, each containing polyester, microcrystalline wax, and a colorant; and spherical silica particles having an average primary particle diameter of 100 nm to 150 nm, wherein the microcrystalline wax has an onset temperature of 45° C. to 60° C. as determined by DSC, and a carbon number distribution of 25 to 55.01-26-2012
20130196261TONER AND IMAGE FORMING APPARATUS - To provide a toner, which contains: toner base particles each containing a binder resin and a colorant; and an external additive containing inorganic particles and fatty acid metal salt particles, wherein the inorganic particles contain at least hydrophobic silica particles, wherein a liberation ratio Ya of the hydrophobic silica particles from the toner is 1% by mass to 20% by mass, and wherein a libration ratio Yb of the fatty acid metal salt particles from the toner is 30% by mass to 90% by mass.08-01-2013
20130196258TONER, DEVELOPER, DEVELOPER CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A toner includes a binder resin including an amorphous polyester resin (A), a crystalline polyester resin (B), and a polyurethane thermoplastic elastomer (C).08-01-2013
20130196259ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes toner particles, and an external additive. The toner particles are (1) prepared by forming aggregated particles by aggregating resin particles in a raw material dispersion in which the resin particles are dispersed, and causing the aggregated particles to coalesce by heating an aggregated particle dispersion in which the aggregated particles are dispersed so as to form the toner particles, or (2) obtained by kneading and pulverizing a material including a binder resin and a release agent, and the external additive is silica particles having an average diameter in the range of 100 nm to 500 nm, an average circularity in the range of 0.5 to 0.85, and an average of a ratio of a circle-equivalent diameter Da obtained by plane image analysis to a maximum height H obtained by 3-D image analysis of greater than 1.5 and less than 1.9.08-01-2013
20130202996TONER, DEVELOPER INCLUDING THE TONER, IMAGE FORMING APPARATUS USING THE TONER, AND BLOCK COPOLYMER - The toner includes a pigment; and a block copolymer having a polyester block A including a residual group of a hydroxycarboxylic acid, and a polyester block B including an anionic group. When cross-section of the block copolymer is observed by a tapping mode atomic force microscope to obtain a phase image of the cross-section, the polyester block B, which has relatively large phase delay, is dispersed as domains having an average size of from 20 nm to 100 nm in a domain of the polyester block A, which has relatively small phase delay. The block copolymer has a first glass transition temperature of from −20° C. to 20° C., and a second glass transition temperature of from 35° C. to 65° C. when the first and second glass transition temperatures are determined from a thermogram obtained by subjecting the block copolymer to differential scanning calorimetry (DSC) at a temperature rising speed of 5° C./min.08-08-2013
20120077118TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, DEVELOPER FOR ELECTROSTATIC IMAGE DEVELOPMENT, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE-FORMING APPARATUS, AND IMAGE-FORMING METHOD - A toner for electrostatic image development including: a toner particle containing a polyester resin and a coloring agent; and an uncolored particle containing a polyester resin and not containing a coloring agent, wherein shape factor SF1 of the uncolored particles is 110 or less, and the number of the uncolored particles is 50 or less based on 5,000 toner particles.03-29-2012
20120094224ENCAPSULATED DYES FOR NON-WATER BASED PRINTING APPLICATIONS - Encapsulated dyes for non-water based printing applications comprise a plurality of dye molecules embedded in a polymeric matrix. A process for making the encapsulated dyes and an electrophotographic ink including an ink vehicle and the encapsulated dyes are also provided.04-19-2012

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