Abstract: An image forming apparatus includes an image bearer, a toner image forming device, a nip forming device, a power source, a controller, and a temperature-and-humidity detector. The toner image forming device forms a toner image on the image bearer. The nip forming device contacts the image bearer to form a transfer nip. The power source outputs a transfer bias, in which an alternating current component is superimposed on a direct current component, to transfer the toner image onto a recording medium interposed in the transfer nip. The temperature-and-humidity detector detects a temperature and humidity. The controller controls the power source to output the transfer bias including the direct current component with a smaller absolute value as at least one of the detected temperature and humidity increases.

Abstract: An electrostatic image developing toner includes toner particles that contain coloring particles containing a binder resin, a coloring agent and a releasing agent. The binder resin includes an amorphous resin and a crystalline polyester resin. The toner satisfies Relations (1) and (2). ?H1 is the amount of heat absorption based on a melting peak of the crystalline polyester resin in a first heating step. ?H2 is the amount of heat absorption based on a melting peak of the crystalline polyester resin in a second heating step. ?H0 is the value of the amount of heat absorption based on a melting peak of the crystalline polyester resin in the second heating step, multiplied by the ratio of the crystalline polyester introduced in the electrostatic image developing toner. 0.43<?H1/?H0<0.95??Relation (1): 0.45<?H2/?H1<1.

Abstract: A toner, wherein the toner has glass transition temperature [Tg1st (toner)] of 20° C. to 50° C., where the glass transition temperature [Tg1st (toner)] is measured in a first heating in differential scanning calorimetry (DSC) of the toner, wherein tetrahydrofuran (THF) insoluble matter of the toner has glass transition temperature [Tg2nd (THF insoluble matter)] of ?40° C. to 30° C., where the glass transition temperature [Tg2nd (THF insoluble matter)] is measured in a second heating in differential scanning calorimetry (DSC) of the tetrahydrofuran (THF) insoluble matter, wherein the THF insoluble matter has a storage modulus at 100° C. [G?(100) (THF insoluble matter)] of 1.0×105 Pa to 1.0×107 Pa, and wherein a ratio of a storage modulus of the THF insoluble matter at 40° C. [G?(40) (THF insoluble matter)] to the storage modulus of the THF insoluble matter at 100° C. [G?(100) (THF insoluble matter)] is 3.5×10 or less.

Abstract: The present invention relates to a process for producing a resin particle dispersion, including a step (1) of mixing a polyester resin and a basic aqueous solution to obtain a resin neutralized product; and a step (2) of adding an aqueous medium to the resin neutralized product obtained in the step (1) to emulsify the resin neutralized product, in which a concentration of an ester group in the polyester resin is from 6.3 to 12 mmol/g, a pH of the basic aqueous solution as measured at 25° C. is from 8.5 to 13.5, and a content of an organic solvent in the resin neutralized product is not more than 10% by mass; and a process for producing a toner for development of electrostatic images, including steps of aggregating and coalescing the resin particles in the obtained resin particle dispersion.

Abstract: A continuous coalescence process for preparing a sustainable toner is described which features toner with lowered melt properties and higher toner surface carbon to oxygen (C/O) ratios than previously described sustainable resins coalesced in a batch reactor.

Abstract: A reversibly allochroic toner contains a binder resin and a colorant. The colorant reversibly switches between first and second color states in response to temperature changes. The colorant exhibits a hysteresis in a temperature-color state curve thereof in which the following relationships are satisfied. Tr<TL2<TL1<TH1<TH2<Tg TH2?50° C. 20° C.?Tr?30° C. where, TH1 is a temperature at which the colorant starts to change from the first color state to the second color state, TH2 is a temperature at which the colorant completely changes to the second color state, TL1 is a temperature at which the colorant starts to change from the second color state to the first color state, TL2 is a temperature at which the colorant completely changes to the first color state, and Tg is a glass transition temperature of the binder resin.

Abstract: A toner that comprises a toner particle that contains a binder resin that contains a styrene-acrylic resin and a block polymer, wherein the block polymer has a polyester segment and a vinyl polymer segment; the polyester segment is obtained by condensation polymerization of: a monomer (a) selected from a group consisting of a prescribed monomer group A; and a monomer (b) selected from a group consisting of a prescribed monomer group B, and the content in the polyester segment of the substructure originating with the monomer (b) as calculated from the following formula is from at least 1.0 mol % to not more than 30.0 mol %: {monomer (b) [mol]/(monomer (a) [mol]+monomer (b) [mol])}×100.

Abstract: An image forming apparatus includes a forming unit and a transfer unit. The forming unit forms a first image using a first toner including a flat pigment containing a first metal or a first metal oxide, and forms a second image using a second toner that does not include any flat pigment containing a second metal or a second metal oxide, a maximum length of the second toner being smaller than that of the first toner. The transfer unit transfers the second image and the first image to a medium in order of the second image and the first image.

Abstract: A developing apparatus and a developing method that significantly suppress generation of fogging and form a high-quality electrophotographic images under any environments such as a high temperature and high humidity environment and a low temperature and low humidity environment are provided. A toner wherein a covering rate X1 of the surface of a toner particle with silica fine particles, which is determined by ESCA, is 40.0 to 75.0 area %, and the diffusion index represented by (Expression 1) diffusion index=X1/X2 satisfies (Expression 2) diffusion index??0.0042×X1+0.62 where in the theoretical covering rate with the silica fine particles is defined as X2; and a developing apparatus including a developing carrying member which is a surface layer formed of a urethane resin having a partial structure derived from a reaction of a polyisocyanate with a compound represented by Formula 1.

Abstract: Incorporation of organic amines as neutralization agents in based phase inversion emulsification (PIE) processes to provide emulsification of high molecular amorphous and high molecular branch amorphous polyester resins, which are traditionally difficult to emulsify. The organic amines facilitate emulsification of these resins to achieve desired particle size with a narrow size distribution.

Abstract: An irregular shape inorganic particle satisfies the following formulas (1) and (2), 1/17?A/B? 1/13??(1) 1.2?C/D?1.5??(2) wherein A represents a distance between the center of a circumscribed rectangle, in which lines sandwiching a projected image and being parallel to an absolute maximum length of the projected image of inorganic fine particles are long sides and lines sandwiching the projected image and being perpendicular to the absolute maximum length are short sides, and the center of gravity of the projected image, B represents the absolute maximum length, C represents a length of a long side of the circumscribed rectangle, and D represents a length of a short side of the circumscribed rectangle.

Abstract: A toner containing a resin binder, a releasing agent, and a charge control agent, wherein the resin binder contains a polyester (A) obtained by polycondensing a carboxylic acid component containing one or more succinic acid derivatives selected from succinic acids substituted with an alkyl group having 8 or more carbon atoms and 20 or less carbon atoms and succinic acids substituted with an alkenyl group having 8 or more carbon atoms and 20 or less carbon atoms, and an alcohol component, a content of the succinic acid derivative being 10% by mol or more and 30% by mol or less of a total amount of the raw material monomers of all the polyesters in the resin binder, and wherein the releasing agent contains an ?-olefin based polymer obtained by polymerizing monomers containing an ?-olefin having 26 or more carbon atoms and 28 or less carbon atoms in an amount of 95% by mol or more, a content of the ?-olefin based polymer being 0.

Abstract: A method of quantifying the coverage of extra particulate additives (EPA) on the surface of toner particles is provided. More specifically, this invention is a method using automated image analysis to correctly identify toner and coverage of EPA particles on the surface of the toner.

Abstract: To provide a toner for electrostatic charge image development which allows obtainment of excellent low temperature fixability and a document off-set resistance sufficiently and also inhibition of an excessive increase in glossiness of a formed fixed image, and a method for manufacturing the same. The toner for electrostatic charge image development includes toner particles containing a binder resin, a colorant, and a releasing agent, in which the binder resin contains at least an amorphous resin and an urethane modified crystalline resin including a crystalline polymer segment and an urethane polymer segment bound to each other, the urethane modified crystalline resin being non-compatible with the amorphous resin, and the amount of ionic dissociating group of the urethane modified crystalline resin is 5 to 20 mgKOH/g.

Abstract: A process includes dissolving a styrene/acrylate resin in an organic solvent to form a first solution, dissolving at least one polyester resin in the first solution to form a second solution, neutralizing the second solution with a base to provide a neutralized solution, and adding a sufficient amount of water to the neutralized solution to form an emulsion. A latex particle includes a polyester resin and a styrene/acrylate resin dispersed within the latex particle, the surface of the latex particle is substantially the polyester resin. A toner includes a plurality of toner particles prepared from a latex, the particles of the latex including a polyester resin and a styrene/acrylate resin dispersed within each latex particle, the surface of each latex particle is substantially the polyester resin.

Abstract: Incorporation of organic amines as neutralization agents in based phase inversion emulsification (PIE) processes to provide emulsification of high molecular amorphous and high molecular branch amorphous polyester resins, which are traditionally difficult to emulsify. The organic amines facilitate emulsification of these resins to achieve desired particle size with a narrow size distribution.

Abstract: A brilliant toner includes flake shape toner particles containing a binder resin and a flake shape metallic pigment. The brilliant toner further includes tabular particles containing a Ti element.

Abstract: To provide a toner including a binder resin and a colorant, wherein the toner has a glass transition temperature by differential scanning calorimetry (DSC) of 20° C. or greater and less than 50° C., an endothermic peak temperature by DSC of 50° C. or greater and less than 80° C. and an amount of compressive deformation at 50° C. by a thermomechanical analysis of 5% or less.

Abstract: Disclosed is an electrostatic latent image developing toner which contains a toner host particle having a domain-matrix structure. The matrix contains an amorphous resin which contains a vinyl resin having an acid group, the domain contains a crystalline resin which is formed by combining a vinyl polymerized segment and a polyester polymerized segment. A content of the crystalline resin falls within a range from 3 to 30% by mass.

Abstract: A method for manufacturing a toner, including at least: dissolving or dispersing a toner material including at least any one of a binder resin and a precursor of a binder resin in an organic solvent which is dispersed in a dispersant-including aqueous medium; forming particles by removing the organic solvent; washing the particles; forming voids in the particles by heating to a temperature T while or after dispersing the particles in an aqueous medium; forming toner base particles by adding a charge controlling agent; and adding an external additive to the toner base particles to obtain toner particles, wherein the T is between a glass transition temperature Tg of the toner particles and Tg+25° C., and the toner has a cross-sectional void fraction Sp/St of 0.1% to 15.0%, where St is a cross-sectional area of the toner particles, and Sp is a cross-sectional area of the voids.

Abstract: The present disclosure provides a toner comprising a bioresin and two waxes with improved fuser release.

Abstract: An image forming apparatus includes a first image forming portion that forms a toner image on a latent image carrier with a toner containing a flat pigment; and a second image forming portion that forms a toner image on a latent image carrier with a toner not containing the flat pigment. The toner images formed by these image forming portions are transferred to a toner image carrier or a recording medium. The average charge amount per particle of the toner containing the flat pigment is smaller than that of the toner not containing the flat pigment. A transfer width is larger than the particle diameter of the toner containing the flat pigment. A transfer current flowing between the latent image carrier of the second image forming portion and the toner image carrier or the recording medium is higher than or equal to a value required to form an electric field.

Abstract: Processes for continuously producing latex emulsions are disclosed. A multi-screw extruder is used for the production of the emulsion. A resin is fed into the extruder, heated, optionally dissolved in a solvent, mixed with a base to neutralize the resin and form particles, then mixed with a surfactant and water to form a phase inverted emulsion (PIE). The PIE may be sent to a distillation column to separate out the solvent, and the resulting latex emulsion is then sent to a receiving tank. These processes are useful for making precursors for toner compositions.

Abstract: A toner includes a binder resin including a copolymer resin (A) having a structural unit derived from a crystalline polyester resin (A1) and another structural unit derived from an amorphous polyester resin (A2), and an amorphous resin (B) in an amount of from 30 to 70% by weight based on total weight of the binder resin. The binarized image of the AFM phase image of the binder resin consists of first phase-contrast images serving as large-phase-difference portions and second phase-contrast images serving as small-phase-difference portions with the first phase-contrast images dispersed in the second phase-contrast images forming a dot-like or streaky structure. The average value of dispersion diameters, corresponding to maximum Feret diameters, of the first phase-contrast images in the dot-like structure, or widths, corresponding to minimum Feret diameters, of the first phase-contrast images in the streaky structure, is less than 100 nm.

Abstract: 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.

Abstract: A printer applies an imaging material to form an image, withdraws vapors from the applied imaging material and treats the withdrawn vapors with a vapor treatment system. The printer heats untreated withdrawn vapors with heat from the vapor treatment system.

Abstract: The disclosure describes a process to produce toner with tunable gloss levels comprising a stabilizer to freeze particle growth following aggregation, where the stabilizer does not chelate metal ions.

Abstract: An electrostatic charge image developing toner includes a binder resin, toner particles containing an acylglycerol, and an external additive, wherein at least one of hydroxyl groups in the acylglycerol is esterified with an alkyl monocarboxylic acid that contains a substituted or unsubstituted alkyl group having from 12 to 22 carbon atoms, and a content of a portion esterified with the alkyl monocarboxylic acid that contains the alkyl group having the same carbon number is 95% by weight or greater with respect to the total weight of the acylglycerol.

Abstract: A brilliant toner includes toner particles containing a brilliant pigment, and toner particles containing a yellow colorant without containing the brilliant pigment, wherein a ratio of the toner particles containing the yellow colorant without containing the brilliant pigment is 50% by number or greater.

Abstract: A toner, containing: toner base particles; and an external additive, the toner base particles each including a binder resin and a releasing agent, wherein the external additive includes non-spherical coalesced particles in each of which primary particles are coalesced together, and wherein the coalesced particles satisfy the following formula (1): Nx/1,000×100?30% where Nx is a number of the primary particles present alone relative to 1,000 of the coalesced particles, as observed under a scanning electron microscope after stirring 0.5 g of the coalesced particles and 49.5 g of a carrier placed in a 50 mL bottle for 10 minutes by means of a mixing and stirring device at 67 Hz.

Abstract: 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 t3 and the pigment completely reaches a decolored state in a temperature region of t4 or higher, and in a temperature-drop process, coloration starts when the temperature reaches t2 and the pigment completely reaches a colored state in a temperature region of ti or lower, and ti is in a range of from ?50 to 0° C. and t4 is in a range of from 50 to 150° C.

Abstract: An image formation apparatus includes a first development device configured to form a color developer image with a color developer, and a second development device configured to form a transparent developer image with a transparent developer. The ratio of the viscosity of the transparent developer to the viscosity of the color developer is not greater than a certain amount.

Abstract: Toner compositions that having spherical particles and provide stable density. The toner compositions also comprise and deliver a silicone oil to the cleaning subsystem in the image forming apparatus by incorporating an inorganic fine powder additive package that has been mixed with silicone oil in a manner such that the toner is blended with the inorganic fine powder and silicone oil.

Abstract: An electrostatic charge image developing toner includes an unsaturated polyester resin that contains a structural unit derived from a dicarboxylic acid component having an ethylenically unsaturated bond and a structural unit derived from a dialcohol component having a rosin ester group, wherein a surface layer portion of the toner contains a crosslinked material of the unsaturated polyester resin.

Abstract: A toner comprised of toner particles including an amorphous resin and a crystalline resin is provided. The coefficient of variation in softening temperature among resin portions in the toner particles is 15% or less when the softening temperature is measured with a scanning probe microscope equipped with a heatable cantilever.

Abstract: A toner comprised of mother toner particles each including a colorant, a resin A capable of forming a crystalline structure, and a resin B incapable of forming a crystalline structure is provided. The resin A is dispersed in the resin B in the state of phase separation. The long axis of each dispersed particle of the resin A has a length of from 30 to 200 nm and the length ratio of the long axis to the short axis is from 2 to 15. The DSC endothermic quantity attributable to the resin A is from 8 to 20 J/g.

Abstract: An electrostatic latent image developing toner includes toner particles. Each toner particle includes a toner core containing a binder resin, a shell layer coating a surface of the toner core, and needle-like inorganic particulates. Each shell layer contains a thermosetting resin, and the inorganic particulates are present within the shell layer. The inorganic particulates have: an aspect ratio of 1.25 or more and 2.5 or less; and an average major diameter and an average minor diameter of 300 nm or less.

Abstract: Developer includes a toner base particle and an outer additive agent attached to a surface of the toner base particle. The outer additive agent includes at least a composite oxide particle containing titanium dioxide and silicon dioxide and a melamine resin particle.

Abstract: A transparent developer has a glass transition point of 63.0° C. to 66.0° C., both inclusive, and a melt temperature, indicative of a softening point by a 1/2 method, of 94.3° C. to 97.0° C., both inclusive.

Abstract: 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.

Abstract: A brilliant toner contains a metallic pigment and a binder resin, and content of Zn is from 0.00005% by weight to 1.0% by weight.

Abstract: Provided is a toner for developing an electrostatic image. The toner has excellent heat-resistant storage properties and crush resistance while having sufficient low temperature fixability. The toner for developing an electrostatic image includes toner particles that contain at least a binder resin. The binder resin contains a polymer prepared by polymerizing a polymerizable monomer represented by a following general formula (1). In the general formula (1), R1 and R2 each independently represent an aliphatic hydrocarbon group having 1 to 60 carbon atoms, an aliphatic group wherein some of carbon atoms of the aliphatic hydrocarbon group are substituted with an oxygen atom, or an aromatic hydrocarbon group optionally having the aliphatic hydrocarbon group or the aliphatic group as a substituent; and R3 and R4 each independently represent a hydrogen atom or an aliphatic hydrocarbon group.

Abstract: A process and result for forming an electrically relaxable coating composite for an electrophotographic imaging component includes providing a non-functionalized soluble carbon nanotube complex, and mixing a polymer material with the soluble carbon nanotube complex. The electrically relaxable coating composite exhibits resistivity in the range or about 107 to about 1012 ohm-cm.

Abstract: The object of the invention is to provide a toner for electrostatic-image development which imparts excellent image quality and a toner cartridge employing the toner. The invention relates to a toner for electrostatic-image development, which satisfies the following requirements (1) and (2): (1) the toner has an average transporting property of 2.9 to 15.1 mg/sec; and (2) the product of the BET specific surface area (m2/g) and volume-average particle diameter (?m) of the toner is 7.7×10?6 to 11.0×10?6 (m3/g).

Abstract: An electrostatic charge image developing toner includes toner particles containing an amorphous resin and a crystalline resin, wherein when a softening temperature is measured at 30 points in surface layer parts of the toner particles, a difference (TH(° C.)?TL(° C.)) between a maximum value (TH(° C.)) and a minimum value (TL(° C.)) out of the softening temperatures at the 30 points is from 25° C. to 100° C.

Abstract: The present invention relates to toner for electrostatic charge image development including a resin, a metal-containing compound, and a colorant compound precursor to be converted to a colorant compound through a reaction with the metal-containing compound by heat applied at heat fixing. According to the present invention, it is possible to provide toner for electrostatic charge image development which is excellent in fluidity and storage stability and a method of manufacturing the same.

Abstract: To provide a method for producing particles, which contains: bringing a first compressive fluid and raw materials containing a pressure plastic material into contact with each other to melt the pressure plastic material; and jetting a melt obtained by melting the pressure plastic material, with supplying a second compressive fluid containing nitrogen to the melt, to thereby form particles.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin containing a polyester resin forming a sea part and a vinyl resin forming an island part of a sea-island structure, a first release agent existing in the sea part in a domain state, and a second release agent existing in the island part in a domain state, wherein when a cross-sectional area of the second release agent is set to A1 and a cross-sectional area of the first release agent is set to B1 in a cross section of the toner particles, a relationship of 0.2?A1/B1?0.8 is satisfied.

Abstract: There is provided an electrostatic image-developing toner containing an amorphous polyester resin, a crystalline polyester resin, and a resin particle incompatible with the amorphous polyester resin, wherein the amorphous polyester resin contains an amorphous polyester resin having an ethylenically unsaturated bond and a surface layer part contains a crosslinking product of the amorphous polyester resin having an ethylenically unsaturated bond.

Abstract: A toner includes a crystalline polyester resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a photopolymerization initiator.