| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 430110200 | Core-shell structure | 88 |
| 20080199799 | Electrostatic image developer, process cartridge, and image forming apparatus - An electrostatic image developer contains a toner and a carrier having a resin coating layer formed on the surface of a core material containing a ferrite component, wherein a ratio R1/R2 is from 0.88 to 0.92 where R1 is the resistance value (Ω) of the developer having a toner concentration of 2 mass % in a state formed into a magnetic brush, at an applied voltage of 10 | 08-21-2008 |
| 20090035686 | CORE-SHELL POLYMER NANOPARTICLES AND METHOD OF MAKING EMULSION AGGREGATION PARTICLES USING SAME - Nano-sized particles for use in making emulsion aggregation toner particles have a core portion and a shell portion, wherein the core portion of the nano-sized particles includes crystalline resin and the shell portion includes amorphous resin and is substantially to completely free of the crystalline resin. | 02-05-2009 |
| 20090035687 | Colored Particles and Manufacturing Method Thereof - Colored particles and their manufacturing method are disclosed. Each of the colored particles composed of a core shell structure comprising a core particle and a colored shell layer formed on a surface of the core particle; and the core particle is composed of a hydrophobic resin; the colored shell layer comprises an active agent structure resin having a hydrophobic part and a hydrophilic part, and a colorant particle; a volume based median particle diameter of the colored particles is 2 to 100 μm; and
| 02-05-2009 |
| 20090047593 | TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner including a core and a shell wherein the core includes an amorphous polyester, a wax, a crystalline polyester and an optional colorant and wherein the shell includes an amorphous polyester and a wax and is substantially free of crystalline polyester. | 02-19-2009 |
| 20090053642 | TONER, METHOD OF FORMING IMAGES USING THE TONER AND IMAGE FORMING DEVICE USING THE TONER - A toner having a cohesion level of 50 or less when measured using an ASTM D 6393-99 includes a first agglomerated toner including latex particles for a core, a pigment and an inorganic salt, and latex particles for a shell layer coated on the first agglomerated toner, wherein the latex particles for the core and the latex particles for the shell layer are prepared by polymerizing a composition including an amphiphilic monomer having a hydrophilic group, a hydrophobic group and at least one reactive functional group, and a polymerizable monomer. | 02-26-2009 |
| 20090087771 | ELECTROPHOTOGRAPHIC CARRIER - An objective is to provide an electrophotographic carrier as a resin coating type carrier containing a conductive particle in a resin coating layer, which inhibits an edge effect via appropriately sufficient action as a developing electrode for a long duration, and acquires high fine line reproduction. Disclosed is an electrophotographic carrier possessing a surface of a magnetic material particle and provided thereon a resin coating layer containing a conductive particle, wherein a cross section of the resin coating layer, photographed with a transmission electron microscope has an average porosity ratio of 1-20%, and further disclosed is the electrophotographic carrier, wherein the resin coating layer comprises an acrylic resin. | 04-02-2009 |
| 20090123865 | TONER COMPOSITION HAVING FLUORINATED POLYMER ADDITIVE - A toner having a core with at least one resin and at least one colorant, and having physically attached on a surface thereof, an additive package including fluorinated polymer particles, and a method of forming toner particles having surface particles attached thereto, wherein the surface particles include fluorinated polymer particles, and the method includes aggregating a material with at least one resin and at least one colorant to produce toner particles, following aggregation, forming a mixture of the surface particles and the toner particles, and subjecting the mixture to a temperature above the glass transition temperature of the toner particles to coalesce the toner particles, whereby the surface particles become at least partially embedded within the surface of the toner particles. | 05-14-2009 |
| 20090130586 | Toner Composition and Method - A method for forming toner particles includes polymerizing monomers to form a latex comprising polymer particles; combining the latex with an unsaturated curable resin to form aggregates containing the polymer particles and the unsaturated curable resin particles; and heating the aggregates to form coalesced particles. A toner composition that may be formed by the process described herein contains toner particles containing: (i) a polymer comprising a photoinitiator, (ii) an unsaturated curable resin and, (iii) a colorant. | 05-21-2009 |
| 20090246673 | Method for Manufacturing a Toner Having Good Charging Characteristics - There is provided a toner having good charging characteristics that is composed of a core region and a thin shell in which a charge control agent is densely distributed so as to improve charging characteristics of the toner, and a method for manufacturing the same. The method for manufacturing a toner having a bi-layered structure includes: producing a toner core using a suspension polymerization method; preparing a suspension of toner particles having a core-shell structure by forming a rigid shell on a surface of the toner core; and recovering the toner particles from the suspension as a post-processing operation. | 10-01-2009 |
| 20090246674 | SILICA ENCAPSULATED ORGANIC NANOPIGMENTS AND METHOD OF MAKING SAME - Core-shell nanoscale pigment particles include a core organic pigment composition including nanoscale particles of organic pigments, and a shell layer of surface-deposited silica, where the organic pigment particles are selected from azo-type pigment particles, azo laked pigment particles, quinacridone pigment particles, phthalocyanine pigment particles, and mixtures thereof. The core-shell nanoscale pigment particles can also include an organic primer layer covering the core and located between the core and the shell layer. The core-shell nanoscale pigment particles can be made by preparing a core composition including nanoparticles of organic pigments, and encapsulating the core with shell layer of surface-deposited silica and an optional organic primer layer located between the core and the shell layer. | 10-01-2009 |
| 20090291383 | TONER - Toner characterized in that assuming that the glass transition point of the toner measured by a differential scanning calorimeter (DSC) is represented by T | 11-26-2009 |
| 20090305159 | TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a core possessing at least one polyester resin in combination with a colorant, optional wax, and optional other additives, and a shell over the core including a high molecular weight amorphous polyester resin. The high molecular weight amorphous polyester resin in the shell may prevent any crystalline polyester resin in the core from migrating to the toner surface. | 12-10-2009 |
| 20100055599 | METHOD OF PREPARING TONER HAVING CORE-SHELL STRUCTURE AND TONER PREPARED USING THE SAME - A method of preparing a toner having a core-shell structure. The method includes: preparing a mixture by mixing a resin with acid groups, a coloring agent and at least one additive with an organic solvent, and neutralizing the acid groups of the resin with a base; forming a micro-suspension solution by adding the mixture to a dispersion medium; forming a toner core by removing the organic solvent from the micro-suspension; and forming a toner complex having a core-shell structure by seed-polymerizing at least one monomer on the surface of the toner core. Thus, the toner that can prevent hot offsets, improve storage stability at a high temperature and improve charge stability against environment changes can be prepared with reduced costs according to the method. | 03-04-2010 |
| 20100151377 | TONER AND MANUFACTURING METHOD OF TONER - Disclosed is a toner, comprising: a noncrystalline polyester resin; a crystalline polyester resin; a release agent; and a coloring agent, wherein the toner has a domain matrix structure in which the matrix comprises the noncrystalline polyester resin and the domain comprises the crystalline polyester resin and the release agent, and wherein the crystalline polyester resin includes within the release agent. | 06-17-2010 |
| 20100209839 | DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME - A method for producing a developing agent including preparing a dispersion liquid containing first fine particles containing a binder resin and second fine particles containing a color developable compound, a color coupler, and a color eraser, and aggregating the first and second fine particles in the dispersion liquid to form aggregated particles. | 08-19-2010 |
| 20100221655 | Resin Particle - To provide resin particles which are excellent in electrostatic properties, thermal resistance storage stability, and thermal properties and have uniform particle diameter. The invention is the resin particles (D) having a structure formed by depositing resin particles (A) comprising a first resin (a) having an initial softening temperature of 40 to 270° C., a glass transition temperature of 20 to 250° C., a flow temperature of 60 to 300° C., and difference of the glass transition temperature and the flow temperature in a range of 0 to 120° C. or a film (P) comprising the resin (a) on the surfaces of resin particles (B) comprising a second resin (b), wherein the surface coverage of the resin particles (B) with the resin particles (A) or the film (P) is 0.1 to 4.9%. | 09-02-2010 |
| 20100233611 | TONER AND TWO-COMPONENT DEVELOPER - There are provided a toner and a two-component developer effective to make exudation of a release agent easy during fixing and to prevent occurrence of high-temperature offset, in which both the preservation stability and the fixing property are improved at the same time. The capsule toner comprises a toner base particle and a resin layer formed of fine resin particles with which a surface of the toner base particle is coated. In the capsule toner, both of the following expressions are satisfied: | 09-16-2010 |
| 20100239974 | TONER AND METHOD OF MANUFACTURING TONER - A toner containing a mother toner particle containing at least two kinds of resins having a polyester skeleton, and a coloring agent, and a releasing agent, wherein the mother toner particle has a core and a shell layer thereon, and no peak that derives from magnesium, calcium, or aluminum in the mother toner particle is observed in a qualitative analysis using an X-ray fluorescence measuring instrument. | 09-23-2010 |
| 20100248124 | METHOD OF MANUFACTURING TONER, TONER OBTAINED BY METHOD THEREOF, ONE-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A toner manufacturing method, a toner obtained by the method, a one-component developer, a two-component developer, a developing device and an image forming apparatus are provided. By using a toner manufacturing apparatus including a powder passage, a spraying section for spraying a predetermined substance in the powder passage and a rotary stirring section, provided in the powder passage, and stirring particles in the powder passage to apply impact force to the particles so that the particles are fluidized in the powder passage, performed are a stirring step S | 09-30-2010 |
| 20100266947 | CAPSULE TONER AND METHOD OF MANUFACTURING CAPSULE TONER - A capsule toner in which fine solid particles constituting a shell layer are less likely to become detached from the surfaces of toner particles in spite of a long-term use within an image forming apparatus and which is capable of prevention of occurrence of filming on a photoreceptor drum, and a method of manufacturing the capsule toner are provided. The capsule toner includes core particle and shell layers for covering the surface of the core particle. The shell layer is formed of a plurality of fine polyester resin particles. The polyester resins contained in the fine polyester resin particles, respectively, are cross-linked to each other by a cross-linking agent. | 10-21-2010 |
| 20110053077 | COLORED RESIN PARTICLE AND METHOD FOR PRODUCING THE SAME - The present invention provides a method for producing a colored resin particle, the method including: preparing an oil phase in which at least a resin and a colorant are dissolved or dispersed in an organic solvent; preparing an aqueous phase containing at least a surfactant in an aqueous medium; dispersing the oil phase in the aqueous phase to prepare a colored particle dispersion liquid so as to form core particles; causing resin fine particles to adhere to surfaces of the core particles by adding at least the resin fine particles to the colored particle dispersion liquid, in which the core particles have been formed; removing the solvent from the colored particle dispersion liquid to obtain colored resin particles, washing the colored resin particles, and drying the colored resin particles, wherein an inorganic base is dissolved in the colored particle dispersion liquid. | 03-03-2011 |
| 20110059394 | CAPSULE TONER, METHOD OF MANUFACTURING THE SAME, AND TWO-COMPONENT DEVELOPER - There are provided a capsule toner, a two-component developer, and a capsule toner manufacturing method. The capsule toner in which a resin coating layer made of fine release-agent particles and fine resin particles is made on the surfaces of toner base particles, and thus excellent offset resistance without impairing blocking resistance can be obtained. The capsule toner includes toner base particles containing a binder resin and a colorant, and a resin coating layer made of fine release-agent particles and fine resin particles, for covering the surfaces of the toner base particles. The fine release-agent particles are dispersed in the resin coating layer. | 03-10-2011 |
| 20110070541 | CAPSULE TONER AND METHOD OF MANUFACTURING CAPSULE TONER - A capsule toner achieving both low temperature fixability and hot offset resistance, and a method of manufacturing the capsule toner are provided. A capsule toner includes a toner base particle containing a binder resin and a colorant, and a resin coating layer formed on a surface of the toner base particle. The resin coating layer includes a film of plural fine resin particles having different complex viscosities. The plural fine resin particles include first fine resin particles having complex viscosity at a softening temperature of the toner base particles of 5.0×10 | 03-24-2011 |
| 20110123923 | TONER AND METHOD FOR PRODUCING THE SAME - A method for producing a decolorable toner comprising: forming particles containing a color former compound, a color developing agent, and a binder resin; forming first aggregated particles by aggregating and fusing the particles containing the color former compound, the color developing agent, and the binder resin in a dispersion medium; and forming second aggregated particles by aggregating and fusing the first aggregated particles and a binder resin in a dispersion medium. | 05-26-2011 |
| 20110136057 | METHOD FOR TREATING ELECTROPHOTOGRAPHIC CARRIER, METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC CARRIER, CORE MATERIAL AND CARRIER - A method for treating an electrophotographic carrier, including treating, with supercritical pure water, the electrophotographic carrier containing at least a core material and a coating layer, so that the coating layer is separated from the core material, wherein the supercritical pure water is obtained by bringing, into a supercritical state, pure water having an electrical conductivity at 25° C. of 1 μS·cm or lower. | 06-09-2011 |
| 20110143276 | BIOMASS CHEMICAL TONER COMPOSITION AND METHOD FOR MANUFACTURING THE SAME - Disclosed are a biomass chemical toner composition and a method for manufacturing the same. First, a biomass resin is mixed with a first hydrophobic resin to form organic particles. The organic particles, a second hydrophobic resin, and a pigment are mixed by emulsion aggregation to form cores. Subsequently, a third hydrophobic resin is formed on the surface of the cores, and the third hydrophobic resin is further heated and coalesced to form a continuous structure encapsulating the cores. Accordingly, the biomass chemical toner obtained from the described method has good anti-humidity, good charge stability, and low fusing temperature. | 06-16-2011 |
| 20110217647 | TONER COMPOSITIONS AND PROCESSES - Toners are provided which possess excellent blocking characteristics. The toners include cores including amorphous resins having low glass transition temperatures, amorphous resins having high glass transition temperatures, and crystalline resins, and shells including amorphous resins having high glass transition temperatures. | 09-08-2011 |
| 20110262858 | TONER CONTAINING METALLIC FLAKES AND METHOD OF FORMING METALLIC IMAGE - The present invention relates to a porous toner particle with encapsulated metallic flakes. The porous particle containing metallic flakes can be useful for reproduction of a metallic hue upon fusing to a substrate, preferably golden or silvery hue, and for manufacturing of printed circuits, by a printing process, especially electrophotography. | 10-27-2011 |
| 20110318685 | METHOD FOR CONTROLLING A TONER PREPARATION PROCESS - A method of making toner particles, including mixing at least one emulsion of at least one resin, a colorant, an optional wax, and optional additives to form a slurry; heating the slurry to form aggregated particles in the slurry; freezing aggregation of the particles by adjusting the pH; and heating the aggregated particles in the slurry to coalesce the particles into toner particles. | 12-29-2011 |
| 20120040285 | TONER PRODUCTION PROCESS AND TONER - A process for producing a core-shell toner is provided in which the toner has core particles containing at least a binder resin ( | 02-16-2012 |
| 20120129092 | ELECTRICALLY CHARGEABLE ENCAPSULATED PARTICLES - Methods of encapsulating particles ( | 05-24-2012 |
| 20120156608 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - A toner for electrostatic image development which is excellent in latitude for environment conditions and is capable of giving prints superior in outputted image stability is disclosed, comprising a resin and a colorant, and the resin comprising a resin (A) having a structural unit represented by the following formula (1) or formula (2). | 06-21-2012 |
| 20120282544 | DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME - A method for producing a developing agent including preparing a dispersion liquid containing first fine particles containing a binder resin and second fine particles containing a color developable compound, a color coupler, and a color eraser, and aggregating the first and second fine particles in the dispersion liquid to form aggregated particles. | 11-08-2012 |
| 20120295194 | LOW DENSITY TONER FOR OPTIMAL IMAGE QUALITY AND PERFORMANCE LATITUDE - A toner composition includes toner particles including an average diameter ranging from about 3 μm to about 10 μm, an average particle density of about 1.4 g/cm | 11-22-2012 |
| 20130065175 | CARRIER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE AND DEVELOPER - A carrier for developing electrostatic latent image, including a core material; and a coated layer covering the core material, including a binder resin and a particulate material, wherein the core material is exposed on the surface of the carrier at an areal ratio of from 0.1 to 5.0% and has the largest exposed part having an areal ratio not greater than 0.03%, and wherein the coated layer comprises the particulate material in an amount of from 100 to 500 parts by weight per 100 parts by weight of the binder resin. | 03-14-2013 |
| 20130078567 | METHOD FOR REGENERATING CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHY, METHOD FOR MANUFACTURING CARRIER FOR ELECTROPHOTOGRAPHY, AND CARRIER FOR ELECTROPHOTOGRAPHY - A method for regenerating a carrier core material for electrophotography, including: treating a carrier for electrophotography including a carrier core material for electrophotography and a coating layer on a surface of the carrier core material for electrophotography with an aqueous solution including an oxidant in a subcritical state or a supercritical state having a temperature of 280° C. or greater and a density of 0.20 g/cm | 03-28-2013 |
| 20130084521 | CARRIER CORE PARTICLES FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, ELECTROPHOTOGRAPHIC DEVELOPER AND METHOD FOR MANUFACTURING THE CARRIER CORE PARTICLES - The carrier core particles for electrophotographic developer include a core composition expressed by a general formula Fe | 04-04-2013 |
| 20130101935 | Toner Composition - A toner is described containing low melt wax and having a core and shell, which toner exhibits improved fusing performance as compared to a toner produced with a high melt wax in the core; having a core resin with a T | 04-25-2013 |
| 20130130171 | TONER - A toner including a core particle, an inner shell layer covering the core, and an outer shell layer covering the inner shell layer is provided. The core particle includes a resin P. The inner shell layer includes fine particles of a resin A. The outer shell layer includes fine particles of a resin B. The toner satisfies the following formulae (1) to (3): | 05-23-2013 |
| 20130171558 | FERRITE CARRIER CORE MATERIAL AND FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, METHODS FOR MANUFACTURING THESE, AND ELECTROGRAPHIC DEVELOPER USING THE FERRITE CARRIER - It is an object of the present invention to provide a ferrite carrier core material and a ferrite carrier for an electrophotographic developer, which have an excellent charging property, hardly cause carrier scattering due to cracking and chipping of the core material, and have a prolonged life, and methods for manufacturing these, and an electrophotographic developer using the ferrite carrier. For this object, the ferrite carrier core material and a ferrite carrier for an electrophotographic developer, wherein (1) the ferrite composition contains 0.5 to 2.5% by weight of Sr, and the presence amount of Sr—Fe oxides satisfies a specific conditional expression, (2) the distribution in the number of the shape factor SF-2 is in a specific range, (3) the BET specific surface area is 0.15 to 0.30 m | 07-04-2013 |
| 20130183618 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER AND MANUFACTURING METHOD THEREOF, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - Provided is an electrostatic charge image developing toner, each toner particle including a core portion, a first shell layer, and a second shell layer, wherein the core portion contains a first polyester resin, a colorant, and a release agent, the first shell layer contains a second polyester resin and covers the core portion, the second shell layer contains a polymer of an aromatic vinyl monomer and a third polyester resin having an ethylenic unsaturated double bond that is polymerizable with the aromatic vinyl monomer, and covers the first shell layer, and a total amount of the first shell layer and the second shell layer is within a range of from 16% by weight to 40% by weight of the toner particle. | 07-18-2013 |
| 20130189614 | CARRIER CORE PARTICLE FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER - A carrier core particle for an electrophotographic developer including a core composition expressed by a general formula: (Mn | 07-25-2013 |
| 20130236829 | SUPER LOW MELT TONER WITH CORE-SHELL TONER PARTICLES - A toner particle having a core and a shell, and a method for making the toner particle. The core includes a crystalline resin and the shell includes an amorphous resin. The shell is substantially to completely free of the crystalline resin. The toner particle permits inclusion of greater amounts of crystalline resin materials in the core, thereby lowering the minimum fusing temperature of the toner formed from the particles. | 09-12-2013 |
| 20130260308 | Toner Process - The present disclosure describes a toner produced using a coalescing temperature lower than the melting point of a wax in the toner, quench cooling or both. The resulting toners can exhibit reduced dielectric loss and improved tribo charging. | 10-03-2013 |
| 20130273471 | Low Melt Toner - Toners containing encapsulated crystalline resin have lower minimum fix temperatures without charge degradation. | 10-17-2013 |
| 20130302732 | METHOD FOR PRODUCING CORE-SHELL STRUCTURED RESIN MICROPARTICLES AND CORE-SHELL STRUCTURED TONER CONTAINING CORE-SHELL STRUCTURED RESIN MICROPARTICLES - Provided is a method for producing core-shell structured resin particles, comprising the steps of: providing a dispersion liquid of hydrophobic resin particles in which the hydrophobic resin particles are dispersed into an aqueous medium containing an anionic surfactant A and an anionic surfactant B; providing a dispersion liquid of resin microparticles in which resin microparticles are dispersed into an aqueous medium; mixing the dispersion liquid of hydrophobic resin particles and the dispersion liquid of resin microparticles; adhering the resin microparticles to surfaces of the hydrophobic resin particles by adding a water soluble metal salt to a mixture resulting from above step, wherein the surfactant A and the surfactant B satisfy the specific conditions. | 11-14-2013 |
| 20130316281 | TONER AND METHOD FOR ITS PREPARATION - Disclosed are a toner and a preparation method thereof. The toner of the invention has honeycomb-shaped core-shell structured particles. The honeycomb-shaped core-shell structured particles comprise two or more core layers. Each core layer is completely covered by a shell layer. | 11-28-2013 |
| 20130330667 | TONERS FOR ELECTROPHOTOGRAPHY - The present invention relates to a toner for electrophotography which is excellent in low-temperature fusing ability and heat-resistant storage property as well as charging stability under high-temperature and high-humidity conditions and smear resistance (rubbing fixability), and a process for producing the toner. The toner for electrophotography according to the present invention includes core-shell particles each including a core containing a amorphous resin (A) obtained by polycondensing an alcohol component containing an aliphatic diol having 2 to 6 carbon atoms with a carboxylic acid component and a shell containing a amorphous composite resin (B) which contains a segment (B1) formed of a polyester resin and a segment (B2) formed of a styrene-containing addition polymer as a constitutional unit thereof. | 12-12-2013 |
| 20130344431 | CARRIER CORE PARTICLES FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER - The carrier core particles for electrophotographic developer have a volume size distribution with a median particle size ranging from 30 μm to 40 μm, the ratio of the carrier core particles having a diameter of 22 μm or lower in the volume size distribution is from 1.0% to 2.0%, the ratio of the carrier core particles having a diameter of 22 μm or lower in a number size distribution is 10% or lower, and the magnetization of the carrier core particles in an external magnetic field of 1000 Oe is from 50 emu/g to 75 emu/g. | 12-26-2013 |
| 20140030647 | TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT - A toner for electrostatic latent image development is comprised toner particles containing toner core particle containing at least a binder resin and a shell layer coating the toner core particle. The shell layer is smoothened to a predetermined level. The average particle diameter of the resin fine particles is from 45 nm to 300 nm. And, when cross-sections of the toner particles are observed using a transmission electron microscope, cracks approximately perpendicular to surfaces of the toner core particles are observable inside the shell layer. | 01-30-2014 |
| 20140030648 | TONER FOR ELECTROSTATIC LATENT-IMAGE DEVELOPMENT AND METHOD FOR PRODUCING THE SAME - In a toner for electrostatic latent-image development that includes toner core particles including at least a binder resin, and shell layers with which the entire surfaces of the toner core particles are coated, an ethylene-unsaturated carboxylic acid copolymer is present at the interface between the toner core particle and the shell layer. | 01-30-2014 |
| 20140030649 | TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT - A toner for electrostatic latent image development is comprised toner particles containing toner core particle containing at least a binder resin and a shell layer coating the toner core particle. The shell layer is smoothened to a predetermined level. And, when cross-sections of the toner particles are observed using a transmission electron microscope, cracks approximately perpendicular to surfaces of the toner core particles are observable inside the shell layer. | 01-30-2014 |
| 20140038097 | TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT - A toner for electrostatic latent image development, containing toner particles composed of toner core particle containing at least a binder resin and a shell layer coating the toner core particle. Average circularities D | 02-06-2014 |
| 20140045114 | MAGNETIC TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT - A magnetic toner for electrostatic latent image development includes toner particles containing toner core particle containing at least a binder resin and a magnetic powder, and a shell layer coating the toner core particle. In the toner, in the case where the surfaces of the shell layers are observed using a scanning electron microscope, the magnetic powder is not observed, and approximately spherical particles derived from the resin fine particles are not observed on the surfaces of the shell layers for toner particles having a particle diameter in a specific range. In the toner, in the case where the cross-sectional surfaces of the toner particles are observed using a transmission electron microscope, cracks approximately perpendicular to surfaces of the toner core particles are observed inside the shell layers. | 02-13-2014 |
| 20140051022 | ELECTROSTATIC CHARGE IMAGE DEVELOPING CARRIER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing carrier includes a core particle that has a BET specific surface area of from 0.15 m | 02-20-2014 |
| 20140065536 | TONER FOR ELECTROSTATIC-CHARGE IMAGE DEVELOPMENT AND METHOD FOR PRODUCING TONER FOR ELECTROSTATIC-CHARGE IMAGE DEVELOPMENT - A toner for electrostatic-charge image development contains toner particles in which the surfaces of core particles, including a binder resin composed of a polyester resin, are coated with shell layers. The shell layer is formed of a resin composed of a copolymer of monomers including a monomer having a quaternary ammonium group and a (meth)acrylic copolymer. The molar ratio of units derived from a monomer having a quaternary ammonium group is 5 mol % or more and 35 mol % or less. | 03-06-2014 |
| 20140087300 | LIQUID DEVELOPER AND METHOD FOR MANUFACTURING THE SAME - Toner particles contained in a liquid developer have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, x represents a number average molecular weight of the second resin and y represents a urethane group concentration (mass %) in the second resin. | 03-27-2014 |
| 20140134533 | Recycled Polyethylene Terephthalate-Based Toner - The present disclosure describes toner comprising a portion of resin comprising a polyethylene terephthalate oligomer. | 05-15-2014 |
| 20140154623 | CARRIER CORE PARTICLES FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, ELECTROPHOTOGRAPHIC DEVELOPER AND METHOD FOR MANUFACTURING THE CARRIER CORE PARTICLES - The carrier core particles for electrophotographic developer include a core composition expressed by a general formula Fe | 06-05-2014 |
| 20140170555 | Cardanol Derivatives in Polyester Toner Resins - The present disclosure provides a polyester toner resin comprising a polyhydroxylated cardanol derivative, that may be used in manufacturing an emulsion aggregation (EA) toner for imaging devices. | 06-19-2014 |
| 20140272701 | TONER PARTICLE FOR HIGH SPEED SINGLE COMPONENT DEVELOPMENT SYSTEM - A toner composition includes toner particles containing a resin; an optional wax; and an optional colorant, wherein the resin is a three latex system including a latex core, a latex shell, and a latex gel; and a glass transition temperature Tg of the latex core is lower than a glass transition temperature Tg of the latex shell. A method of making a toner composition includes blending a latex core resin including a base polymer and a latex gel and optional additives; adding a coagulant and an acid; homogenizing the slurry; raising the temperature to a value close to the glass transition temperature of the latex core resin while stirring to form aggregated particles having a size of from about 3 to about 9 μm; adding a latex shell resin to the slurry at a controlled rate to form a batch containing toner particles having a core and a shell; adding a pH adjustment agent to the batch to freeze growth of the toner particles; coalescing the batch by increasing the temperature to a coalescence temperature that is above a glass transition temperature of the shell; monitoring the batch for particle circularity; and recovering the toner particles. | 09-18-2014 |
| 20140272702 | EMULSION AGGREGATION TONERS WITH IMPROVED PARTICLE SIZE DISTRIBUTION - A method of making toner particles that includes forming a pre-shell aggregate mixture by adding to a reactor pre-shell aggregate ingredients, the includes a latex resin, the reactor having a mixing impeller and a heating jacket; performing pre-shell aggregation while homogenizing the pre-shell aggregate mixture with the impeller at an initial tip speed to form pre-shell aggregates; decreasing the tip speed to a second tip speed when the pre-shell aggregates reach a target intermediate average particle diameter; and then decreasing the tip speed at one or more intervals between when the pre-shell aggregates reach the target intermediate average particle diameter and when the pre-shell aggregates reach a target final average particle diameter so that the tip speed meets the following formula: | 09-18-2014 |
| 20140302435 | CARRIER RESINS WITH IMPROVED RELATIVE HUMIDITY SENSITIVITY - The disclosure generally describes carrier resins, and in particular, resins used for carrier coatings which include at least one ester functional group and at least one cyclic aliphatic group containing at least one nitrogen atom in the cyclic ring structure. Carriers having such resins in the coating exhibit high charge and excellent relative humidity (RH) sensitivity of charge to changing environmental conditions. | 10-09-2014 |
| 20140335451 | TONER PARTICLES HAVING AN INCREASED SURFACE HARDNESS AND TONERS THEREOF - The present embodiments relate to toner particles having an increased surface hardness, and toners comprising said toner particles. More specifically, the present embodiments relate to toner particles having an average surface hardness of from about 130 mPa to about 250 mPa, comprising a core surrounded by a shell, wherein the shell comprises a crystalline resin. | 11-13-2014 |
| 20150030978 | MAGNETIC TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE - A magnetic toner for developing an electrostatic latent image of the present disclosure includes toner particles each having a toner core containing a binder resin and a magnetic powder, and a shell layer coating a surface of the toner core. The shell layer contains a unit derived from a monomer of a thermosetting resin and a unit derived from a thermoplastic resin. The thermosetting resin is one or more resins selected from the group of amino resins consisting of a melamine resin, a urea resin, and a glyoxal resin. The amount of iron eluted from the toner core (iron concentration in a filtrate) measured by a specified method is 10 mg/L or less. | 01-29-2015 |
| 20150099224 | TONER - The present invention is a toner that has toner particles that have a surface layer that contains an organosilicon polymer, wherein this organosilicon polymer has a specific substructure and the ratio [ST3], in a | 04-09-2015 |
| 20150111148 | Porous Resin Particles - Porous resin particles of from about 3 μm to about 25 μm size made in an emulsion aggregation process where coalescence occurs under continuous conditions which enable, for example, more rapid coalescence, are described. | 04-23-2015 |
| 20150118615 | TONER AND METHOD FOR MANUFACTURING THE SAME - A toner includes a plurality of toner particles each having a core and a shell layer on a surface of the core. In a cross section of the toner particle analyzed by EELS, for at least 50% of a circumferential length of the core, the shell layer has one or more portions each satisfying conditions that: a ratio of INc to INs is no less than 0.0 and no greater than 0.2; and a thickness of the shell layer is at least 5 nm. Here, INs indicates an intensity of an N-K shell absorption-edge originating from nitrogen atoms in the shell layer, and INc indicates an intensity of an N-K shell absorption-edge originating from nitrogen atoms in the core. In addition, the longest length among the one or more portions of the shell layer each satisfying the conditions is at least 100 nm. | 04-30-2015 |
| 20150378274 | TONER - A toner contains toner particles having a surface layer containing an organosilicon polymer. | 12-31-2015 |
| 20160011534 | BASE PARTICLE AND ELECTROSTATIC IMAGE DEVELOPING TONER | 01-14-2016 |
| 20160024276 | LATEX COMPRISING COLORANT AND METHODS OF MAKING THE SAME - A process includes forming an emulsion comprising a monomer and a colorant, the colorant further including an anionic functional group and a lipophilic counter ion, and polymerizing the monomer to form a latex, the latex includes polymer nanoparticles having the colorant dispersed therein. | 01-28-2016 |
| 20160026103 | SUSPENSION POLYMERIZATION TONER OF CORE-SHELL STRUCTURE WITH POSITIVE CHARGES AND PREPARATION METHOD - Suspension polymerization toner of core-shell structure with positive charges comprises core-shell composite particles prepared by mixing composition forming toner core particles with aqueous dispersion liquid, carrying out a heating polymerization reaction to obtain suspension dispersion liquid of toner soft core particles, and carrying out a water-based polymerization reaction to form the core-shell composite particles of which an outer surface of the toner core particles are coated with the rigid shell layer with dense positive charges. | 01-28-2016 |
| 20160033887 | SUSPENSION POLYMERIZATION TONER OF CORE-SHELL STRUCTURE WITH DENSE CHARGES AND PREPARATION METHOD - Suspension polymerization toner of a core-shell structure with dense charges comprises core-shell composite particles prepared by mixing suspension dispersion liquid of toner core particles with shell monomer emulsion and resin-type CCA dispersion liquid, and carrying out a polymerization reaction to form rigid shell layers with dense charges coated on the soft toner core particles. A preparation method thereof comprises: mixing a low-Tg monomer oil phase forming toner core particles with aqueous dispersion liquid, carrying out a heating polymerization reaction after suspension granulation to convert monomer oil droplet particles to polymer particles, and obtaining soft toner core particles; adding a high-Tg shell monomer forming rigid shell layers into water containing a surfactant to form emulsion, adding the emulsion and CCA dispersion liquid into suspension dispersion liquid of the soft toner core particles for second polymerization after mixing, and cleaning, filtering, drying and performing additive treatment. | 02-04-2016 |
| 20160033888 | TONER - A toner includes a plurality of toner particles each including a core and a shell layer disposed over a surface of the core. The shell layers include a resin containing a unit derived from a thermoplastic resin and a unit derived from a monomer or prepolymer of a thermosetting resin. The toner has an average roundness of no less than 0.965 and no greater than 0.975. The toner contains less than 0.5% by number of toner particles having a roundness of no greater than 0.85. The toner has a displacement rate of no less than 0.50% and no greater than 0.70% as measured in a micro-compression test that is performed on the toner under specified conditions. | 02-04-2016 |
| 20160054672 | TWO-COMPONENT DEVELOPER IMAGE INFORMING APPARATUS, AND IMAGE FORMATION METHOD - A two-component developer includes a toner and a carrier. The toner includes a plurality of toner particles. The carrier includes a plurality of carrier particles. Each of the toner particles includes a toner core and a shell layer disposed over the surface of the toner core. The toner has a charge decay constant of at least 0.020 and no greater than 0.050 as measured with the toner particles in an external additive-free state. The carrier has a volume resistivity of at least 1.0×10 | 02-25-2016 |
| 20160062256 | ELECTROSTATIC CHARGE IMAGE DEVELOPING CARRIER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrostatic charge image developing carrier contains a core particle and a resin coat layer on a surface of the core particle, wherein the core particle has a BET specific surface area of from 0.05 m | 03-03-2016 |
| 20160070191 | TONER AND TWO-COMPONENT DEVELOPER - Provided is [i] a toner including at least a colorant, a resin, and a releasing agent, wherein a spin-spin relaxation time (t | 03-10-2016 |
| 20160070193 | FERRITE PARTICLE HAVING OUTER SHELL STRUCTURE, FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER - It is an object of the present invention to provide a ferrite particle having a low apparent density, and being capable of maintaining various properties thereof in controllable states and filling a fixed volume in a small weight thereof, a ferrite carrier core material and a ferrite carrier for an electrophotographic developer using the ferrite particle, and the like. In order to achieve the object, there are employed the ferrite particle having a porous structure in the interior thereof and an outer shell structure on the outer periphery thereof, the ferrite carrier core material and the ferrite carrier for an electrophotographic developer using the ferrite particle, and an electrophotographic developer using the ferrite carrier. | 03-10-2016 |
| 20160077454 | DEVELOPER WITH TONER AND CARRIER, AND IMAGE FORMING APPARATUS USING THE SAME - A developer according to an embodiment includes a toner having a color erasable by heating and a carrier. The carrier includes a core portion and a coating portion covering at least 50% of the core portion. The coating portion includes an additive agent which suppresses an increase in electrification due to friction between the toner and the carrier. The additive agent has a white color. | 03-17-2016 |
| 20160116855 | ELECTROPHOTOGRAPHIC TONER AND METHOD FOR PRODUCING THE SAME - Disclosed is a decolorizable electrophotographic toner, including: a binder resin; and a colorant which contains at least a color developable compound and a color developing agent and is covered with an outer shell so as to have a capsule structure, wherein the number ratio of particles having an equivalent circle diameter of 0.6 μm or more and 2.5 μm or less of the toner when measured using a flow particle image analyzer after the toner is dispersed in an aqueous medium at a ratio of 0.08% by weight and the resulting dispersion is subjected to a stirring treatment in which stirring is performed at 5000 rpm for 30 minutes using a homogenizer (T-25 digital ULTRA-TURRAX (manufactured by IKA Japan K.K., provided with a shaft generator S25N-10G)) is 30% by number or less. | 04-28-2016 |
| 20160124335 | POSITIVELY CHARGEABLE TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT - A positively chargeable toner for electrostatic latent image development includes toner particles. The toner particles each include a toner core containing boron nitride and a shell layer disposed over a surface of the toner core. The boron nitride is contained in an amount of no less than 0.05% by mass and no greater than 35% by mass relative to total mass of the toner core. The boron nitride has a thermal conductivity of no less than 40 W/m·K and no greater than 220 W/m·K. | 05-05-2016 |
| 20160139526 | Bio-based Acrylate and (Meth)acrylate Resins - (Meth)acrylate resins of at least one bio-based (meth)acrylate monomer, where the monomer includes a rosin or isosorbide moiety obtained from natural sources, can be used in toner, carrier coating or both. | 05-19-2016 |
| 20160161873 | Styrene/Acrylate and Polyester Hybrid Toner - The present disclosure describes toner particles that have polyester resin and styrene/acrylate resin in the core. | 06-09-2016 |
| 20160179025 | ELECTROSTATIC IMAGE DEVELOPING TONER | 06-23-2016 |
| 20160187796 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER - An electrostatic latent image developing toner includes toner particles that each include a toner core and a shell layer disposed over a surface of the toner core. The shell layer contains a first shell resin and a second shell resin. The first shell resin is a hydrophilic thermoplastic resin, a hydrophobic thermoplastic resin, or a hydrophobic thermosetting resin. The second shell resin is a hydrophilic thermosetting resin. The first shell resin includes a repeating unit having an alcoholic hydroxyl group. | 06-30-2016 |
| 20160187797 | RESIN PARTICLE AND METHOD OF PRODUCING THE RESIN PARTICLE, AND TONER AND METHOD OF PRODUCING THE TONER - Provided is a toner, comprising a toner particle having a core-shell structure composed of a core particle and a shell phase on a surface of the core particle, the core particle containing a resin X and a colorant, the shell phase being derived from a resin fine particle containing a resin Y, in which a relationship among a SP value of the resin X, a SP value of the resin Y, and a SP value of an organic solvent falls within a specific range, and a relationship between a number-average particle diameter of the resin fine particle when the resin fine particle is dispersed in water and a number-average particle diameter of the resin fine particle when the resin fine particle is dispersed in the organic solvent falls within a specific range. | 06-30-2016 |
| 20160252835 | TONER | 09-01-2016 |
| 20160378007 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER - An electrostatic latent image developing toner contains toner particles each containing a toner core, and a shell layer dividedly disposed as a plurality of segments on a surface of the toner core. The shell layer contains a hydrophobic thermoplastic resin and a hydrophilic thermosetting resin. A toner core-shell layer interface formation rate is 3.78×10 | 12-29-2016 |
