Abstract: An image forming method including forming an electrostatic latent image on an image bearing member; developing the electrostatic latent image with a developer including a toner to prepare a toner image on the image bearing member; transferring the toner image onto a receiving material; and cleaning the surface of the image bearing member with a cleaning blade; wherein a surface of the image bearing member has a friction coefficient of from 0.10 to 0.40, and wherein the toner has an average circularity of from 0.97 to 1.00 and includes toner particles and a particulate material having an average particle diameter of from 0.03 to 1 ?m, wherein the particulate material is externally added to the toner particles by a wet method.

Abstract: The present disclosure provides processes for the production of block copolymer polyester resins suitable for use in manufacturing toners. In embodiments, the copolymers include both a crystalline block and an amorphous block, which can self-assemble to form nanoparticles suitable for use in forming toners.

Abstract: The present disclosure provides an electrographic toner and methods for preparing an electrographic toner. In particular, the present disclosure provides an electrophotographic toner comprising a latex, a colorant and a releasing agent. The electrophotographic toner may further comprise zinc (Zn), iron (Fe), and silicon (Si). The [Zn]/[Fe] ratio may be in the range of about 5.0×10?2 to about 2.0×10?2. The [Si]/[Fe] ratio may be in the range of about 5.0×10?4 to about 5.0×10?2. [Zn], [Fe] and [Si] denote the intensities of Zn, Fe and Si, respectively, as measured by X-ray fluorescence spectrometry.

Abstract: A toner including a core including at least a colorant, a release agent and a first binder resin; and a shell located overlying the core and including at least a second binder resin, wherein the first binder resin includes a polyester resin including a unit obtained from a diol selected from the group consisting of aliphatic diols and alicyclic diols, and the second binder resin includes a vinyl copolymer, and wherein a weight ratio (S/C) of the shell (S) to the core (C) is from 0.05 to 0.5 and the toner has a volume average particle diameter of from 3 to 8 ?m.

Abstract: Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided.

Abstract: A toner composition includes core particles including a polymeric latex and an optional colorant, and amino-containing polymer particles dispersed on an external surface of the particles.

Abstract: 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 S3 is performed, and during rotation of a rotary shaft section, after a completion of inputting the fine resin particles into a powder passage, and within a period satisfying 1.7?(load F?load F0)/(load Fcore?load F0)?5.7, a spraying step S4 is started.

Abstract: 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 S3 of fluidizing toner core particles with fine inorganic particles adhering to the surfaces thereof and fine resin particles in the powder passage as the powder by the rotary stirring section, and a spraying step S5 of spraying a volatile liquid which softens fine resin particles as a predetermined substance by the spraying section.

Abstract: 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.

Abstract: A process including mixing a sulfonated polyester resin, a colorant, and a coagulant; heating the resulting sulfonated polyester mixture; adding a polymetal halide and an anionic latex to form coated toner particles; and heating the coated toner particles is disclosed.

Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.

Abstract: Provided is magnetic toner including capsule type toner particles each having a surface layer (B) on a surface of a toner base particle (A) containing at least a binder resin (a) mainly formed of a polyester, a magnetic substance, and a wax, in which, the surface layer (B) includes a resin (b), and the resin (b) includes a resin selected from the group consisting of a polyester resin (b1), a vinyl resin (b2), and a urethane resin (b3); a glass transition temperature Tg(a) of the binder resin (a) and a glass transition temperature Tg(b) of the resin (b) satisfy a relationship of Tg(a)<Tg(b); a magnetization (?t) in an external magnetic field of 79.6 kA/m of the magnetic toner is 12 Am2/kg or more and 30 Am2/kg or less; and an average circularity of the toner is 0.960 or more and 1.000 or less.

Abstract: 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.

Abstract: The color toner has capsule type toner particles each having a surface layer (B) mainly formed of a resin (b) on the surface of a toner base particle (A) containing at least a binder resin (a), a colorant, and a wax, in which (1) a temperature Tp at which a curve 1 obtained by plotting a temperature on an axis of abscissa and the common logarithm of a value obtained by dividing the loss modulus G? of the color toner by the unit of the loss modulus on an axis of ordinate shows a maximum is present, and Tp satisfies the relationship of 40° C.?Tp?60° C., (2) a temperature Ts at which a curve 2 obtained by differentiating the curve 1 with respect to the temperature twice shows a local minimum is present in the temperature range of Tp+10(° C.) to Tp+40(° C.), and (3) a ratio G?(Ts)/G?(Ts+5) in the curve 1 is larger than 3.0.

Abstract: An electrophotographic toner including a latex, a coloring agent, and a release agent, wherein a difference between an average circularity of toner having a particle size of D16p or less (S16) and an average circularity of toner having a particle size of D50p or less (S50) is about 0.01 or less, wherein the circularity is measured using a flow particle image analyzer (FPIA), and the ratio of an area of wax to a total cross-sectional area of the toner having a particle size of D16p or less is about 8/100 or greater, and wherein the area is measured using a transmission electron microscope (TEM).

Abstract: A toner usable with electrophotography includes an iron (Fe) content in the toner is in a range of about 1.0×102 ppm to about 1.0×104 ppm and a circle equivalent diameter of a sectional area of an Fe agglomerating agent is in a range of about 1.0 nm to about 2.0×102 nm.

Abstract: An electrophotographic toner includes a latex, a colorant, and a release agent, wherein G?(80) is in a range of about 2.0×105 Pa to about 3.0×106 Pa and G?(80)/G?(140) is in a range of about 2.0×102 to about 3.0×103, wherein in regard to a molecular weight distribution on a gel permeation chromatography (GPC) chromatogram, the molecular weight region of 1.0×104 g/mol or less of a tetrahydrofuran (THF)-soluble component of the electrophotographic toner is about 5% or less, and the molecular weight region of 1.0×105 g/mol or more of the THF-soluble component of the electrophotographic toner is in a range of about 5% to about 20%, where G?(80) and G?(140) respectively denote storage moduli of the electrophotographic toner at temperatures of 80° C. and 140° C. when a dynamic viscoelasticity according to a sine-wave vibration is measured at an angular velocity of 6.28 rad/sec and at a temperature increase rate of 2.0° C./min.

Abstract: A toner to develop an electrostatic latent image which includes a latex, a colorant, and a release agent, wherein the toner has a complex viscosity (?*) in a range of about 2.5×102 to about 1.0×103 Pa·s and a loss tangent (tan ?) in a range of about 1.3 to about 2.3 at a temperature of about 160° C. and wherein the ?* is defined by a formula ?*=(G?2+G?2)1/2/w, and the tan ? is defined by a formula G?/G?, where G? is a storage elastic modulus and G? is a loss elastic modulus as determined under the following conditions of an angular velocity being about 6.28 rad/s and at a temperature increasing at a rate of about 2.0° C/min.

Abstract: An electrophotographic toner which includes a latex, a colorant, and a releasing agent, wherein characteristics of the electrophotographic toner measured by using a Fourier transform infrared spectroscopy in an attenuated total reflection mode (FT-IR-ATR), in which an incidence angle is changeable, satisfy Inequalities 1 through 3 presented herein.

Abstract: The disclosure provides electrophotographic toner and a method of preparing the same. The toner includes a latex, a colorant, and a releasing agent, wherein the toner has a weight-average molecular weight of about 50,000 to about 80,000; a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.; and a storage modulus Pa (dG?) to a loss modulus Pa (dG?) (dG?/dG?) ratio of about 1.10 to about 1.25.

Abstract: 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.

Abstract: The present invention is directed to surface treatment of toner particles and the toner developers used for the dry development of electrostatic charge images.

Abstract: The invention relates to toner particles having excellent charging characteristics and transferring properties, a method for producing the same and toner including the same. More particularly, the invention relates to toner particles, a method for producing the same and toner including the same, in which a CCA highly compatible with a binder resin is readily dispersed in the binder resin, thereby improving charge-maintaining property and charge distribution, and the resultant mixture is sphered to realize excellent long term credibility and transfer property. The toner particles include a styrene/acrylate-based CCA; a styrene/acrylate-based binder resin; and a polyester-based binder resin.

Abstract: Provided are an electrophotographic toner and a method of preparing the same. The toner includes a latex, a coloring agent, and a release agent, and has a selected amount of wax exposed on the surface of the toner.

Abstract: Toner particles are provided which may, in embodiments, include a high molecular weight branched or cross-linked polyester to decrease image gloss and to increase toner elasticity to prevent surface additives impaction. In embodiments, the toner particles may have a core-shell configuration, with the high molecular weight polyester in the core, the shell, or both.

Abstract: A toner having its surface functionalized with alkaline resins is provided, and processes for producing the same.

Abstract: A polymerized toner is provided. The polymerized toner has cores containing a wax with a polydispersity of 1.05 to 1.1. The fixability of the polymerized toner is improved by the presence of the wax. Further provided is a method of producing the polymerized toner.

Abstract: A method for manufacturing a resin-layer coated toner is provided. The method for manufacturing the resin-layer coated toner uses a rotary stirring apparatus including a circulating section, a temperature regulation section, a spraying section and an exhausting section, sprays a liquid substance to particles of toner materials and particles of coating materials in a fluidized state to plasticize such particles from a spraying section by carrier gas and gasifies the liquid, circulates the carrier gas in the powder passage and continuously exhausts the carrier gas including the gasified substance through the exhausting section to the outside of the powder passage, and pressure P1 in the powder passage and pressure P0 outside the powder passage satisfy the following formula (1): 0 atm<(Pressure P1 in the powder passage?Pressure P0 outside the powder passage)?0.3 atm??(1).

Abstract: The present invention relates to toner compositions comprising a resin and a colorant. Various embodiments of the colorant used in the toner compositions are disclosed, including a modified pigment comprising a pigment having attached at least one organic group having the formula ?X-I, wherein X, which is directly attached to the pigment, represents an arylene or heteroarylene group, or an alkylene group, and I represents a non-polymeric group comprising at least one ionic group or at least one ionizable group. Processes for preparing toner compositions are also described.

Abstract: A method for manufacturing a toner is provided. In a fine resin particle adhering step S1b, fine resin particles adhere to toner base particle surfaces in a powder passage. In a spraying step S3c, flowing toner base particles and fine resin particles are sprayed with a substance in liquid form for plasticizing those particles. In a film-forming step S3d, toner base particles and fine resin particles are circulated repeatedly in the powder passage until fine resin particles adherent to toner base particles are shaped into a film. In the spraying step S3c, the substance in liquid form is sprayed in such a manner that the LEL concentration coefficient within the powder passage falls in a range of from 0.07 to 8.12.

Abstract: An electrophotographic toner and a method of preparing the same are provided. The electrophotographic toner includes a latex, a colorant, and a releasing agent, wherein the electrophotographic toner includes silicon (Si) and iron (Fe), each of the Si and Fe is in the range of about 3 to about 1,000 ppm, a mole ratio of Si to Fe (Si/Fe) is in the range of about 0.1 to about 5, an initiation temperature of a maximum heat absorption peak curve when a temperature increases in a heat absorption curve of the toner measured by a differential scanning calorimeter (DSC) is in the range of about 68 to about 89° C., and a peak temperature of the maximum heat absorption peak curve is in the range of about 86 to about 89° C.

Abstract: An embodiment may be an electrophotographic toner which comprises at least one toner particle which comprises an inner layer and an outer layer covering the inner layer, wherein a cross-sectional area ratio of the outer layer to the inner layer is 0.05-0.46, and wherein a non-uniform thickness exists in the outer layer, and further the average thickness (t) taken at 5 positions as calculated by, is about 0.2-about 1.0 ?m, t=(t1+t2+t3+t4+t5)/5 (unit of t1-t5 is ?m) wherein t1 represents a thickness of the thickest part of the outer layer, and t2-t5 each represent a thickness of a second to a fifth thickest part of the outer layer in one particle, and wherein a glass transition point Tg of the inner layer is about 2-about 45° C. lower than Tg of the outer layer.

Abstract: A method for manufacturing a toner is provided. The method for manufacturing a toner uses a rotary stirring apparatus. The rotary stirring apparatus includes at least a circulation section, a temperature regulation section and a spraying section composed of a two-fluid nozzle. The two-fluid nozzle includes a liquid pipe and an air pipe, the liquid pipe is inserted in the air pipe such that an axis of the liquid pipe coincides with an axis of the air pipe, and at least a part of the liquid pipe and the air pipe is fixed such that the centers of those pipes do not move. A substance in liquid form is sprayed in constant rate from the two-fluid nozzle while regulating temperature and circulating the toner base particles and the fine resin particles in a powder passage, thereby forming a film on the surface of the toner base particle.

Abstract: Toner particles are provided which may, in embodiments, include a core and a shell formed in situ. The resins utilized to form the core, the shell, or both, may be contacted with a water soluble initiator. The resin, in embodiments present in the shell, cross-links at a temperature near the temperature for coalescence, and may prevent a crystalline resin in the core from migrating to the toner surface.

Abstract: The method for producing a developing agent according to the invention contains subjecting the toner material dispersion liquid to mechanical shearing to make the granular mixture into fine particles, thereby providing a dispersion liquid containing fine particles having a smaller particle diameter than a particle diameter of the granular mixture. The toner material dispersion liquid is subjected to mechanical shearing under a temperature of a glass transition point Tg of the binder resin or more and a pressure of 10 MPa or more, and the resulting dispersion liquid containing the fine particles is depressurized with two or more stages while maintaining the temperature of a glass transition point Tg of the binder resin or more and then cooled to a temperature of a glass transition point Tg of the binder resin or less.

Abstract: Disclosed are an electrophotographic toner and a method of preparing the same. The electrophotographic toner includes latex; a colorant; and a releasing agent. The absolute value of a differential value of complex viscosity with respect to temperature, ( ? ? ? ? T ? ) of the electrophotographic toner in a temperature range of 100° C.-160° C. is in a range of about 0.03 to about 0.06, and complex viscosity (?) of the electrophotographic toner at 140° C. is in a range of about 1.0×102 Pa·s to about 6.0×102 Pa·s.

Abstract: A color toner is provided which has a dielectric strength equal to or lower than that of a black toner containing carbon black, and which has an improved charging rate and charge stability against changes in the environment.

Abstract: Provided is a non-magnetic mono-component color toner with improved charge properties by surface modification with a charge control agent. The color toner is prepared by spheroidizing toner core particles including a binder and a colorant in the presence of 0.5 to 3 parts by weight of a charge control agent and coating the resultant spherical toner core particles with a first spherical organic powder with an average particle size of 50 to 120 nm, a second spherical organic powder with an average particle size of 600 to 1,000 nm, silica with an average particle size of 5 to 20 nm, and titanium dioxide with an average particle size of 300 to 1,000 nm. The color toner exhibits excellent surface charge properties (e.g., a narrow charge distribution, high chargeability, and good charge maintenance capability), thereby ensuring low image/background contamination, high transfer efficiency, good image density and long-term stability.

Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.

Abstract: A toner producing method is provided, which comprises preparing toner base particles in an aqueous medium, wherein the toner base particles comprise resin fine particles, and forming a coating layer on the surface of the toner base particles, wherein the coating layer is formed by attaching or coating a toner functional substance onto the surface of the toner base particles using at least one of supercritical fluids and sub-supercritical fluids.

Abstract: The present invention provides a toner for electrophotography having a capsule structure including a core and a shell that covers the core, wherein the core contains a colorant, a releasing agent, an amorphous resin, and a block polymer containing a crystalline part and an amorphous part, the weight-average molecular weight of the block polymer is 10,000 or more, the weight-average molecular weight of the resin used in formation of the amorphous part of the block polymer is 1000 to 5000, and the weight-average molecular weight of the resin used in formation of the crystalline part of the block polymer is at least 2 times the weight-average molecular weight of the resin used in formation of the amorphous part of the block polymer, a method of manufacturing the same, a developer for electrophotography including the toner and a carrier, and an image forming method using the developer for electrophotography.

Abstract: Toner of the present invention includes aggregated particles formed by aggregating at least resin particles, pigment particles, and wax particles in an aqueous medium in the presence of a water-soluble inorganic salt. The wax includes at least one selected from the following: ester wax that has an iodine value of not more than 25, a saponification value of 30 to 300, and an endothermic peak temperature (melting point) of 50° C. to 100° C. based on a DSC method; and wax that is obtained by a reaction of alkyl alcohol having a carbon number of 4 to 30, unsaturated polycarboxylic acid or its anhydride, and synthetic hydrocarbon wax, and has an acid value of 1 to 80 mgKOH/g and an endothermic peak temperature (melted point) of 50° C. to 120° C. based on the DSC method.

Abstract: A toner having its surface functionalized with alkaline resins is provided, and processes for producing the same.

Abstract: A method for producing a developing agent contains mechanically shearing a mixture containing a polyester resin, a colorant and a releasing agent to form first fine particles, aggregating the first fine particles to form aggregated particles as a core, aggregating second fine particles containing a polyester resin onto the core to form a shell.

Abstract: In a method for manufacturing a polymerized toner, in a washing step after polymerization, colored polymer particles are washed using a continuous pressurizing filter in a circulation washing manner, in which a dispersion containing colored polymer particles obtained in the polymerization step is supplied by pressure to the inlet of the continuous pressurizing filter from a slurry tank that stores the dispersion; the dispersion is filtered in the filter while stirring; the concentrated dispersion is fed back to the slurry tank from the outlet; a washing solution in a quantity equivalent to the quantity of the filtrate filtered by filtration is added to the slurry tank to dilute the filtrate; and the dispersion diluted by the washing solution is circulated in the filter.

Abstract: Disclosed is a toner having a core/shell structure and including a hydrophilic resin and a hydrophobic resin, and a manufacturing method thereof.

Abstract: A method for producing resin particles using a dispersion liquid in which a dispersoid mainly made of a resin material is finely dispersed in a dispersion medium, the method comprising a dispersion liquid ejecting step for ejecting the dispersion liquid in the form of droplets and a dispersion medium removing step for removing the dispersion medium from the dispersion liquid in the form of droplets, wherein a granulation prevention agent for preventing or suppressing fine particles derived from the dispersoid from being agglomerated and then granulated is applied to the dispersion liquid.

Abstract: Disclosed is a method of manufacturing toner comprising the steps of adding oil-droplets containing a radically polymerizable monomer into an associated particle dispersion formed by association-fusing resin particles and colorant particles, and forming a shell by coating a resin produced via polymerization on a surface of the associated particle by polymerizing the radically polymerizable monomer in the associated particle dispersion, wherein a hydrophilicity degree of the resin contained in the shell is larger than a hydrophilicity degree of a resin contained in the associated particle.

Abstract: A toner and a method of preparing the toner, the method including: preparing first latex particles by polymerizing a toner composition including a macromonomer having a hydrophilic group, a hydrophobic group, and at least one reactive functional group; at least one polymerizable monomer; and a wax; preparing a first agglomerated toner by mixing the first latex particles with a pigment dispersion dispersed by the macromonomer and adding an inorganic salt to the mixture; and coating second latex particles which are prepared by polymerizing a composition for the second latex particles including at least one polymerizable monomer and a cross-linkable monomer on the first agglomerated toner, a method of forming an image using the toner, and an image forming apparatus employing the toner.

Abstract: A method of preparing toner, the method including: preparing latex particles for a core which contain wax by polymerizing a toner composition comprising at least one polymerizable monomer and a macromonomer having a hydrophilic group, a hydrophobic group, and at least one reactive functional group; mixing the latex particles for a core with a self-dispersable pigment dispersion and adding an inorganic salt thereto to prepare a primarily agglomerated toner; and coating latex particles for a shell layer on the primarily agglomerated toner. In addition, a toner prepared using the preparation method, a method of forming image using the toner, and an image forming apparatus using the toner. Accordingly, pigments can be uniformly dispersed even without using an emulsifying agent and a dispersant, and thus images that are uniformly transferred can be obtained, and toner with long-term storage and excellent durability can be prepared.