Abstract: A fluorescent yellow toner including a core comprising a first solvent yellow 160-incorporated amorphous polyester; a second solvent yellow 160-incorporated amorphous polyester; wherein the first amorphous polyester and the second amorphous polyester are different; and a crystalline polyester; a shell disposed over the core, the shell comprising at least one amorphous polyester; wherein the toner provides printed images having an L* value of greater than 90, an a* value of from about less than ?40 to about ?20, and a b*value of greater than 75. A process of printing the fluorescent yellow toner.

Abstract: The present disclosure provides SWIR-active small molecule polymethine dyes with improved properties for use in optical imaging, photothermal therapy, photodynamic therapy, and SWIR-promoted drug delivery.

Abstract: A developer includes a metallic pigment and a binder resin. The developer includes a fine powder having a particle size smaller than a mode value in a volume particle size distribution of the metallic pigment. A proportion of the fine powder relative to the developer is equal to or higher than 4.6 percent and equal to or lower than 9.6 percent.

Abstract: A toner having an adequate storage stability and adequately suppressing an ejected paper adhesion, while achieving improving low-temperature fixability, has a toner particle containing a binder resin and a plasticizer, wherein Tg1 is 53° C. or lower and Tg2 is 55° C. or higher, in DSC measurement using the toner as a sample, when the following steps (i) to (iii) are performed: (i): the temperature of the toner is raised for the first time at a rate of temperature increase of 10° C./min, (ii): after the step (i), the temperature of the toner is lowered at a rate of temperature decrease of 10° C./min, (iii): after the step (ii), the temperature of the toner is raised for the second time at a rate of temperature increase of 10° C./min, Tg1 represents a glass transition temperature measured at the step (i), and Tg2 represents a glass transition temperature measured at the step (iii).

Abstract: A toner is provided. The toner comprises a binder resin, a release agent, and a function imparting agent comprising a fatty acid amide having a melting point of from 110 to 160 degrees C. When the toner is heated by a differential scanning calorimeter, the toner exhibits no endothermic peak within a temperature range of ±20 degrees C. of a temperature at a highest endothermic peak derived from the fatty acid amide.

Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.

Abstract: Provided is a magnetic toner having a toner particle containing a binder resin and a magnetic body, wherein the binder resin contains a polymer A having a first monomer unit and a second monomer unit, the first polymerizable monomer is at least one selected from the group consisting of the (meth)acrylic acid esters having C18-36 alkyl groups, a content of the first monomer unit and a content of the second monomer unit based on the total moles of all monomer units in the polymer A are respectively 5.0 to 60.0 mol % and 20.0 to 95.0 mol %, and assuming that an SP value of the first monomer unit and the second monomer unit are taken as SP11 (J/cm3)0.5 and SP21(J/cm3)0.5, respectively, 3.00?(SP21?SP11)?25.00 is satisfied, and an oil absorption of the magnetic body is 5 to 40 ml/100 g.

Abstract: An electrostatic-image developing toner includes toner particles including a binder resin including an amorphous resin including a polyester resin segment and a styrene acrylate resin segment and a release agent. The content of 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide in the electrostatic-image developing toner is 1,000 ppm by mass or less.

Abstract: A toner for electrostatic image development includes: toner base particles containing at least a nonionic surfactant, a binder resin, and a release agent; and an external additive. The content of the nonionic surfactant is from 0.05% by mass to 1% by mass inclusive based on the total mass of the toner, and the external additive contains particles with an arithmetic mean particle diameter of from 50 nm to 400 nm inclusive. The amount of the external additive released is 5% by mass or less.

Abstract: A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6???8 and 14?mw/?<30 are satisfied, where ? represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.

Abstract: Provided is a magenta toner, which is excellent in image density, has an enhanced chargeability, and can be produced at a low cost. The magenta toner comprising a binder resin and a magenta colorant, wherein a compound A represented by the general formula (1) and a compound B represented by the general formula (2) are contained as the magenta colorant, and wherein a total content of the compound A and the compound B is from 3 to 30 parts by mass with respect to 100 parts by mass of the binder resin, and a mass ratio of the content of the compound A to the content of the compound B (compound A/compound B) is from 0.8 to 20.

Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 40 percent by weight, based on the weight of the copolymer; and optionally, a third monomer comprising an amine, wherein the third monomer is present in an amount of from about 0.1 percent by weight to about 1.5 percent by weight, based on the weight of the copolymer; and a surfactant, wherein the surfactant has a minimum surface tension at critical micelle concentration of less than about 30 mN/m. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.

Abstract: A toner for electrostatic image development includes: toner base particles containing at least a nonionic surfactant, a binder resin, and a release agent; and an external additive. The content of the nonionic surfactant is from 0.05% by mass to 1% by mass inclusive based on the total mass of the toner. The external additive contains inorganic particles having an arithmetic mean particle diameter of from 50 nm to 400 nm inclusive and an average circularity of from 0.5 to 0.8 inclusive.

Abstract: An electrostatic-image developing toner includes toner particles including a binder resin including an amorphous resin including a polyester resin segment and a styrene acrylate resin segment and a release agent. The content of 1-amino-2-methoxybenzene in the electrostatic-image developing toner is 200 ppm by mass or less.

Abstract: Provided is a toner having a toner particle, wherein the toner particle contains a polyester resin and a fatty acid metal salt, the toner contains a tetrahydrofuran-soluble component A with a molecular weight of at least 1,000 and not more than 5,000, as measured by gel permeation chromatography, in an amount of at least 25 mass % and not more than 80 mass %, and a mass ratio of the fatty acid metal salt to the tetrahydrofuran-soluble component A is at least 0.003 and not more than 0.060.

Abstract: To provide a toner for electrophotography exhibiting an excellent charge rise property, and a process for producing the same. [1] A toner for electrophotography containing a binder resin, and a polyhydroxyamine compound represented by the following formula (1) in an amount of 0.001 part by mass or more and 5.0 parts by mass or less per 100 parts by mass of the binder resin, and [2] a process for producing a toner for electrophotography, including: melt-kneading a toner raw material mixture containing a binder resin, and a polyhydroxyamine compound represented by the following formula (1) in an amount of 0.001 part by mass or more and 5.0 parts by mass or less per 100 parts by mass of the binder resin; and pulverizing a resulting melt-kneaded material.

Abstract: An image forming apparatus includes: an image carrier to which a lubricant is applied; a developing device that develops an electrostatic latent image carried on the image carrier with toner, and includes a casing accommodating a toner-containing developer and a developing sleeve supplying the image carrier with the toner contained in the developer accommodated in the casing; and a hardware processor that detects information indicating a state of lubricant adhesion to the developing sleeve, and performs, based on a result of the detection by the hardware processor, a lubricant removing operation as an operation for removing the lubricant adhering to the developing sleeve.

Abstract: Provided here are toners and image forming apparatus and methods for the formation of a bright image with excellent brightness and concealability. A bright toner according to an embodiment comprises a plurality of toner particles containing a bright pigment and a binder resin, and has a volume particle diameter distribution with a coefficient of variation CV of 0.26 or more.

Abstract: An electrostatic charge image developing toner set includes a white toner that includes white toner particles containing a core and a coating layer which does not contain a coloring agent and a colored toner that includes colored toner particles containing a core and a coating layer which does not contain a coloring agent, wherein with respect to a difference between an average equivalent circle diameter [Rw1] of the cores (Win) in the white toner particles and an average equivalent circle diameter [Rw2] of the white toner particles [Rw2?Rw1], and a difference between the average equivalent circle diameter [Rc1] of the cores (Cin) in the colored toner particles and the average equivalent circle diameter [Rc2] of the colored toner particles [Rc2?Rc1], a relationship of the following Expression (1) is satisfied: [Rw2?Rw1]<[Rc2?Rc1]??(1).

Abstract: Disclosed are infrared light absorbing aminium and diimmonium compositions that have at least one absorption maximum in the infrared spectral region between about 700 and 1500 nm and that are useful, for example, as infrared absorbers. In one example, an infrared light aminium absorbing composition includes an anionic borate moiety and an aminium radical cation, which has at least one absorption peak in the near infrared wavelength region between about 700 and 1500 nm. In another example, an infrared light diimmonium absorbing composition includes two anionic borate moieties and a diimmonium radical cation, which has at least one absorption peak in the near infrared wavelength region between about 700 and 1500 nm. Such compositions may be incorporated into films or bulk materials to form light filters for electromagnetic radiation, including laser radiation.

Abstract: A resist composition which generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, the resist composition including a base component (A) which exhibits changed solubility in a developing solution under action of acid, and a compound (D1) represented by general formula (d1), wherein Z? represents an anion having an aromatic ring containing a hydroxybenzoic acid skeleton, provided that at least one hydrogen atom of the aromatic ring has been substituted with a halogen atom; m represents an integer of 1 or more; and Mm+ represents an organic cation having a valency of m.

Abstract: Provided is a spherical alumina powder which, when incorporated into resins in a high concentration, enables a resin composition to have low viscosity and which has reduced viscosity increase in the resin composition over time after surface treatment of the spherical alumina powder. The spherical alumina powder has an alkyl group(s) derived from a silane compound(s) on its surface, and is characterized in that an intensity ratio {I (CH3)/I (CH2)} of a peak (2960±5 cm?1) associated with asymmetric vibration of CH3 to a peak (2925±5 cm?1) associated with asymmetric vibration of CH2 in the alkyl group(s) of the silane compound(s) in the same spectral data obtained by infrared spectroscopic analysis measurement is 0.2 or more and less than 2.0.

Abstract: A toner according to the present disclosure maintains high transfer efficiency for the long term and obtains images which are not affected by toner base particles easily, which exhibit excellent charge stability, and which exhibit less fogging, wherein the toner is obtained by making inorganic fine particles and charge control particles, which satisfy specific conditions, present on the surfaces of toner base particles so as to satisfy a specific coverage relationship.

Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.

Abstract: An object of the embodiments herein is to provide a toner having excellent visibility upon irradiation with UV light, a toner cartridge, and an image forming apparatus. According to one embodiment, a toner contains at least two or more fluorescent coloring agents selected from the group consisting of a first fluorescent coloring agent, a second fluorescent coloring agent, and a third fluorescent coloring agent, and a binder resin. The first fluorescent coloring agent has a fluorescence peak in a wavelength region of 400 nm or more and less than 500 nm. The second fluorescent coloring agent has a fluorescence peak in a wavelength region of 500 nm or more and less than 600 nm. The third fluorescent coloring agent has a fluorescence peak in a wavelength region of 600 nm or more and less than 650 nm.

Abstract: A two-component developer includes a toner and a carrier. The toner is a positively chargeable toner that is positively charged by friction with the carrier. The toner includes a plurality of toner particles each including a toner mother particle and a plurality of first resin particles. An anionic surfactant having higher negative chargeability than the first resin particles is present on surfaces of the first resin particles. The carrier includes a plurality of carrier particles each including a carrier mother particle and a plurality of second resin particles. A cationic surfactant having higher positive chargeability than the second resin particles is present on surfaces of the second resin particles. The first resin particles have a zeta potential lower than 0 mV at a pH of 5. The second resin particles have a zeta potential higher than 0 mV at a pH of 5.

Abstract: An electrostatic image developing toner contains: toner particles, first silica particles having an average equivalent circle diameter of 10 nm to 120 nm and second silica particles having a compressive agglomeration degree of 60% to 95%, a particle compression ratio of 0.20 to 0.40 and an average equivalent circle diameter being greater than the average equivalent circle diameter of the first silica particles.

Abstract: A toner including a resin; and a colorant wax comprising a plurality of colorant wax particles comprising a colorant core surrounded by a wax shell, wherein the colorant wax particles exhibit a particle size distribution of from about 150 nanometers to less than about 300 nanometers; and wherein the colorant wax is prepared by (a) melting and mixing a dry colorant with at least one wax to form a colorant concentrate, wherein the colorant concentrate contains at least 25 percent by weight of colorant; (b) milling the colorant concentrate of step (a) to form a milled colorant concentrate; (c) combining the milled colorant concentrate of (b) with water and dispersing to form the plurality of colorant wax particles; wherein the melting and mixing of step (a) and the milling of step (b) is done in an immersion media mill; and wherein the combining of step (c) is done using a piston homogenizer.

Abstract: A toner comprises a binder resin, a colorant, and a compound represented by the following general formula [1]: (in the formula, R1 to R8 each independently represent a group selected from the hydrogen atom, fluorine atom, bromine atom, iodine atom, hydroxy group, acetyl group, aldehyde group, C1 to C6 hydrocarbon groups, and amino group; X represents a group selected from the oxygen atom, sulfur atom, carbonyl group, and —CR9R10—; and R9 and R10 each independently represent a group selected from the hydrogen atom, bromine atom, C1 to C3 hydroxyalkyl groups, hydroxy group, phenyl group, and C1 to C6 hydrocarbon groups).

Abstract: A toner includes a base particle; and an external additive covering the base particle. The toner includes a tetrahydrofuran (THF)-insoluble component having a glass transition temperature determined from a DSC curve when heated for the second time of from ?50° C. to 10° C. and an average circularity not greater than 0.98, and satisfies the following relation: Bt?0.025×Ct?1.80 wherein Bt represents a BET specific surface area [m2/g]; and Ct represents a coverage [%] of the external additive covering the base particle.

Abstract: Provided is a toner, including toner particles each containing a binder resin containing a polyester ? as a main component, a colorant, a wax, and a crystalline polyester, in which: the polyester ? has a polyhydric alcohol unit and a polyvalent carboxylic acid unit; and the polyester ? has, as the polyhydric alcohol unit, a polyhydric alcohol unit N derived from an alkylene oxide adduct of a novolac type phenol resin.

Abstract: A system for producing a security feature on a physical printed document that has a first image printed on a first side of a piece of medium is provided. The system includes a security portion forming device that melts a marking substance that forms the security portion of the first image such that the security portion soaks into the piece of medium and is visible from a second side of the piece of medium, the second side being opposite to the first side. The security portion is less than the entire first image, and a remainder portion of the first image is equal to the entire first image less the security portion.

Abstract: The present invention relates to a process for producing a toner for electrophotography which is capable of suppressing liberation of a wax from a resin binder and exposure of the wax to a surface of respective toner particles in the step of obtaining fused particles upon production of the toner, and reducing a content of fine powders in the toner, and which is characterized by an excellent low-temperature fusing property and an excellent anti-high-temperature offset property.

Abstract: A toner includes an amorphous resin; and a crystalline polyester resin dispersed in the amorphous resin. The crystalline polyester resin has a volume-average particle diameter (Dv) of from 0.07 to 0.20 ?m, and a ratio (Dv/Dn) of the volume-average particle diameter (Dv) to a number-average particle diameter (Dn) thereof of from 1.00 to 2.25.

Abstract: Red toners that approximate PANTONE® Red 032 and PANTONE® Warm Red are described. The colorant includes an orange colorant and a red colorant, where the orange colorant absorbs light having a wavelength of from about 400 to about 520 nm, and where the red colorant absorbs light having a wavelength of from about 500 to 580 nm.

Abstract: A process includes dissolving a polyester resin in a mixture of a single organic solvent, a base and water to form a resin mixture; neutralizing the resin mixture with a neutralizing agent to provide a neutralized resin mixture; adding water to the neutralized resin mixture until phase inversion occurs to form a toner resin emulsion; removing the single solvent to form a polyester latex.

Abstract: An electrophotographic photoconductor, including: an electroconductive substrate; and at least a photoconductive layer and a surface layer in this order over the electroconductive substrate, wherein the surface layer includes a resin having no charge transport properties, and first inorganic fine particles, and wherein the first inorganic fine particles are inorganic fine particles having surfaces modified with at least one of a primary amino group and a secondary amino group, and a volume resistivity of the first inorganic fine particles is 1×108 ?·cm or less.

Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a first toner that is decolorizable and has a first brightness, and a second image forming unit configured to form a second image to be transferred to the sheet with a second toner that has a second brightness that is greater than the first brightness. At least a part of the first image transferred to the sheet is formed above the second image transferred to the sheet.

Abstract: Provided is an electrophotographic photosensitive member including a surface layer containing particles which include: silica particles; and a compound-A adsorbed to each of the silica particles, in which the silica particles have a volume average particle diameter of 0.1 ?m or more and 4 ?m or less, and a specific surface area of 400 m2/g or more and 1000 m2/g or less, the compound-A is a tertiary amine compound and/or a urea compound, and the compound-A has a molecular weight of 150 or more and 550 or less.

Abstract: A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.

Abstract: A process includes dissolving a polyester resin in an organic solvent to form a solution, the polyester resin has a latex-destabilizing cation, removing substantially all of the latex-destabilizing cation, neutralizing the solution of the polyester resin, adding a sufficient amount of water to the neutralized solution form an emulsion, and removing a portion of the organic solvent from the emulsion to form a latex of the polyester resin.

Abstract: An image forming apparatus, including: an electrostatic latent image bearing member; an electrostatic latent image forming unit configured to form an electrostatic latent image on the electrostatic latent image bearing member; and a developing unit containing a toner and configured to develop the electrostatic latent image with the toner to thereby form a visible image, wherein the developing unit is a contact type one-component developing unit which includes a toner bearing member being in contact with the electrostatic latent image bearing member, wherein a contact pressure between the electrostatic latent image bearing member and the toner bearing member is 2.0×104 N/m2 to 7.5×104 N/m2, wherein the toner contains a binder resin and a releasing agent, and wherein an extracted amount of the releasing agent extracted with hexane from the toner is 10 mg/g to 25 mg/g.

Abstract: Disclosed is a toner for developing electrostatic images comprising a colored resin particle containing a binder resin, a colorant and a softening agent, and an external additive, wherein the colored resin particle contains a diester compound represented by the following general formula (1) as the softening agent, and a content of the diester compound is in the range from 1 to 15 parts by mass with respect to 100 parts by mass of the colored resin particle, and the toner has a softening temperature “Ts” of 55 to 70° C., a flow starting temperature “Tfb” of 80 to 100° C. and a glass transition temperature of 40 to 70° C. in a flow tester: wherein, R1 is an ethylene group or a trimethylene group; and each of R2 and R3 is independently a linear alkyl group having 11 to 25 carbons.

Abstract: A control device includes a toner-density-related value identifying unit, a supply-amount-related value identifying unit, and a correcting unit. The toner-density-related value identifying unit identifies a toner-density-related value indicating the ratio of toner in developer including toner and carrier and contained in a developing unit that contains and agitates the developer. The supply-amount-related value identifying unit identifies the supply-amount-related value of developer to the developing unit. The correcting unit corrects the toner-density-related value identified by the toner-density-related value identifying unit in accordance with the supply-amount-related value identified by the supply-amount-related value identifying unit. The supply-amount-related value identifying unit estimates the supply-amount-related value on the basis of the consumption-amount-related value of developer.

Abstract: A method of transferring a foil comprising: forming a foil transferring face on a photoreceptor employing a foil transferring face forming toner; transferring the foil transferring face onto a base substance, followed by fixing the foil transferring face; supplying a transfer foil having at least a foil and an adhesive layer on the base substance having the fixed foil transferring face, heating the transfer foil and the foil transferring face while the adhesive layer of the transfer foil is in contact with the foil transferring face to adhere the foil onto the foil transferring face; removing the transfer foil from the base substance while leaving the foil adhered onto the foil transferring face, wherein the foil transferring face forming toner comprises at least a binder resin, wherein the binder resin comprises a polymer formed by using a vinyl monomer comprising at least a carboxyl group.

Abstract: A toner includes a polymeric resin, optionally a colorant, and a small molecule crystalline imide having a molecular weight less than 1,000 g/mol. The polymeric resin may be an amorphous resin and a mixture of the amorphous resin and the crystalline imide may be characterized by a reduction in glass transition temperature from that of the resin and by the lack of a melting point for the crystalline imide as determined by differential scanning calorimetry, the enthalpy of fusion for the crystalline imide in the mixture being measured to be less than 10% of the enthalpy of fusion of the crystalline imide in pure form. Furthermore, the toner may be configured to have a crease fix minimum fusing temperature (MFT) less than or equal to the crease fix MFT of a benchmark ultra-low-melt emulsion aggregation toner. Suitable crystalline imides may include N-alkyl and N-aryl imides, such as N-benzylphthalimide.

Abstract: A toner includes a polymeric resin, optionally a colorant, and a small molecule crystalline imide having a molecular weight less than 1,000 g/mol. The polymeric resin may be an amorphous resin and a mixture of the amorphous resin and the crystalline imide may be characterized by a reduction in glass transition temperature from that of the resin and by the lack of a melting point for the crystalline imide as determined by differential scanning calorimetry, the enthalpy of fusion for the crystalline imide in the mixture being measured to be less than 10% of the enthalpy of fusion of the crystalline imide in pure form. Furthermore, the toner may be configured to have a crease fix minimum fusing temperature (MFT) less than or equal to the crease fix MFT of a benchmark ultra-low-melt emulsion aggregation toner. Suitable crystalline imides may include N-alkyl and N-aryl imides, such as N-benzylphthalimide.

Abstract: An emulsion aggregation (EA) toner includes an amorphous polymeric resin, optionally a colorant, and a small molecule crystalline organic compound having molecular weight less than 1,000 g/mol and melting point less than the fusing temperature of the EA toner, wherein a mixture of the resin and the small molecule compound is characterized by a reduction in glass transition temperature from that of the resin and by the lack of a significant solid to liquid phase transition peak for the small molecule compound as determined by differential scanning calorimetry, the enthalpy of fusion for the small molecule compound in the mixture being measured to be less than 10% of the enthalpy of fusion of the compound in pure form. Furthermore, the EA toner may be configured to have a crease fix minimum fusing temperature (MFT) less than or equal to the crease fix MFT of a benchmark ultra-low-melt emulsion aggregation toner.

Abstract: An electrostatic charge image developing toner includes toner particles; and an external additive that is externally added to surfaces of the toner particles, in which a content of nitrogen atoms on the surfaces of the toner particles is from 0.8 atomic % to 5.0 atomic % and a content of nitrogen atoms at a depth of 10 nm inside from the surfaces of the toner particles is 0.4 atomic % or less when measured by X-ray photoelectron spectroscopy.

Abstract: To provide a yellow toner having a colorant in a good dispersed state, obtained through excellent granulation performance and having stable developing performance, the yellow toner contains a binder resin, a wax and a colorant, and is characterized by containing as the colorant a compound represented by the following general formula (1) and a compound represented by the following general formula (2).