Abstract: An electrostatic charge image developing carrier includes: a magnetic particle; and a resin coating layer that covers a surface of the magnetic particle with a resin, the resin coating layer containing an acid having a cyclic diterpene structure and either of carbon black or nigrosine dispersed therein.

Abstract: The present invention relates to micron to sub-micron sized coloured polymeric electrophotographic toner particles, a process for making those particles and their use as dry or liquid electrophotographic toners, and as component in the preparation of two-component electrophotographic developers. The particles comprise two different kinds of polymers and are made through dewatering of a water-in-oil emulsion.

Abstract: The present invention relates to a toner for developing electrostatic latent images, comprising carbon black having a number average particle size of Feret's diameter of 5 to 300 nm and containing primary particles at a content of 5% or more on a number basis. The toner of the present invention can prevent change of Q/M caused by adhesion of a carrier or a sleeve, and stable characteristics can be maintained for a long period without causing fogging or tone-flying.

Abstract: The invention provides a color toner for flash fusing containing at least: a binder resin, a colorant, a leuco dye, a developer and a decolorizer. An absorbance of the color toner after photoirradiation at a wavelength of about 900 nm is smaller than an absorbance of the color toner before the photoirradiation at the wavelength of about 900 nm. The invention further provides a method for producing the color toner, a electrostatic image developer comprising the color toner, a process cartridge comprising a developer bearing body which accommodates the electrostatic image developer, and an image forming apparatus to form a toner image by the electrostatic image developer.

Abstract: A magenta toner for developing an electrostatic image, the magenta toner comprising at least a binder resin and a magenta colorant, wherein the magenta colorant comprises a compound represented by Formula (1), wherein D is represented by one of Formulas (2) to (4):

Abstract: An emissive toner composition for producing an emissive image component of an image indicia on a substrate. The emissive toner composition includes a photoluminescent agent, a charge control agent, and one or more additives, each selected and present in an amount such that when the toner composition is printed to produce an image component on a substrate, the toner composition has stable spectral characteristics. In one embodiment, the emission spectra of the image component printed on the substrate, for irradiation with an excitation energy includes only dominant emission peaks corresponding to one or more emission peaks of the photoluminescent agent. In another embodiment, the image component has a photoluminescent toner stability factor of about greater than or equal to 25.

Abstract: Disclosed are novel aminium, diimonium, and polymethine borate dyes that have at least one absorption maximum in the infrared spectral region between about 700 and 2000 nm and that are useful as infrared absorbers, the anionic borate moiety having the formula: [BXaYb]?, in which a and b are integers with a ranging from 0 to 3 and b ranging from 1 to 4 and a+b=4; X, which may be identical or different, are each a halogen atom, an OH functional group, or a C1 to C20 alkyl or alicyclic radical, and Y, which may be identical or different, are each a phenyl radical, at least one Y substituted by at least one element or electron-withdrawing substituent such as a perfluoroalkyl group, or by one or more halogen atoms, or an aryl radical containing at least two aromatic ring members, which may also be further substituted. Such dyes may be incorporated into films or bulk materials to form light filters for electromagnetic radiation, including laser radiation.

Abstract: Disclosed is a toner particle having at least binder and colorant. The colorant is a dye complex comprising a dye, a nonionic surfactant and a complexing agent. The toner having this colorant exhibits improved color gamut.

Abstract: [PROBLEMS] Providing a charge control agent that has a negative charge providing property at a practical level, is colorless to light-colored and usable in color toners, produces static charges stable to environmental changes by electrifying the resin powder of a toner and the like, is excellent in storage stability and durability, and is highly safe, as well as a method of controlling the charge of resin powder using the charge control agent, and a toner. [MEANS OF SOLVING THE PROBLEMS] A charge control agent having a compound represented by the formula shown below as the active ingredient, as well as a method of controlling the charge of resin powder using the charge control agent, and a toner.

Abstract: Provided are a positive charge controlling agent which is excellent in compatibility with and dispersibility in a binder resin, prevented from discoloring, excellent in chargeability, and reduced in the content of organic compounds having low boiling points, thereby giving no strong odor; a process for producing the same; and an electrophotographic toner which exhibits excellent chargeability and colorability, and the controlled production of VOC. The positive charge controlling agent includes a copolymer obtained by copolymerizing a styrene monomer (M1), a (meth)acrylic acid alkyl ester monomer (M2), and a quaternary ammonium salt (M3) of a dialkylaminoalkyl(meth)acrylate monomer, wherein a copolymerizing ratio (mass %) of the monomers, (M1)+(M2):(M3), is 99.5:0.5 to 65:35, and at least one end thereof is RCOO— or RO—, where R is an alkyl group, an aryl group, an aralkyl group, or an alicyclic group.

Abstract: The invention relates to an electrostatic image developing toner comprising at least one of a phthalocyanine type compound and a naphthalocyanine type compound and at least one compound represented by the following structural formulae (1) to (10): wherein R1 to R57 respectively represent a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, an amino group, a halogen group, an alkoxy group, an alkylthio group, a nitro group, a hydroxy group, a thiol group, an alkylcarbonyl group, an alkoxycarbonyl group, an alkylcarbonylamino group, an alkoxycarbonylamino group, a carboxyamide group or a nitroimino group, wherein among R1 to R57, any two adjacent Rs may form a carbon ring and any two Rs connected to the same carbon atom may form an oxo group, an imino group or a thioxo group.

Abstract: A positively chargeable toner comprising a resin binder, a specified compound represented by the formula (I), and a higher fatty acid with a long-chain alkyl group having 8 to 22 carbon atoms and/or a metal salt thereof. The positively chargeable toner is a positively chargeable toner used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.

Abstract: To provide a positive charge control resin with which an electrophotographic functional component part coming into contact with a toner can be made chargeable in a polarity reverse to the polarity of the toner, and which has superior dispersibility in, and compatibility with, a main binder. The present invention is a positive charge control resin having a copolymer obtained by polymerizing specific acrylate or methacrylate monomer, amino-group-containing monomer(s) and carboxyl-group-containing monomer(s) as copolymerization components.

Abstract: Provided is a toner for developing electrostatic image, comprising particles of oil phase containing at least a toner composition and/or toner composition precursor in an aqueous medium, wherein the toner composition and/or toner composition precursor comprises an organic-modified layered inorganic mineral prepared by modifying at least partially an ion of a layered inorganic mineral into an organic ion, and the organic ion-modification ratio X satisfies the relation of 100<X(%)<150 in the organic-modified layered inorganic mineral.

Abstract: Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which R1, R2 are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or polysubstituted by C1-C12-alkyl, C1-C6-alkoxy, hydroxyl, nitro, and/or halogen; X is halogen; n Is from 0 to 4, or comprises a mixture of both isomers and has a blackness value ?210 in an alkyd/melamine baking varnish.

Abstract: The invention relates to a dry toner, containing a platelet-type metal effect pigment or a plurality of platelet-type metal effect pigments and at least one resinous constituent, wherein the metal effect pigment or the metal effect pigments is/are additionally provided with a coating preferably suitable for improving the mechanical stability, and that this coating is additionally modified with at least one organic layer, which organic layer is selected from the group consisting of organofunctional silanes, organofunctional titanates, organofunctional zirconates, phosphonic acids, and phosphonates. The invention further relates to processes for the production of the dry toner and to the use thereof. Furthermore, the invention relates to a toner cartridge and to printed products.

Abstract: A toner for developing electrostatic image which has a reduced residual amount of a decomposed product of a polymerization initiator remaining in the toner upon production (mainly an ether component) and an unreacted polymerizable monomer (mainly styrene), less odor produced upon fixing so as to avoid deteriorating surrounding environment, an excellent shelf stability at high temperature upon storing or anti-blocking property, and an excellent printing durability under both N/N environment and H/H environment upon printing is provided. A toner for developing electrostatic image comprising a colored resin particle which is obtained by polymerizing a polymerizable monomer composition containing a polymerizable monomer, a colorant and a charge control resin in an aqueous dispersion medium in the presence of a polymerization initiator, wherein the charge control resin is a quaternary ammonium base containing copolymer having a glass transition temperature “Tg” in the range from 70 to 100° C.

Abstract: The present invention is toner particle that includes a continuous phase of binder polymer and a second phase of hydrocolloid. The particle has a porosity of at least 10 percent.

Abstract: A pigment preparation comprising at least one copper phthalocyanine pigment from the group of C.I. Pigment Blue 15, 15:0, 15:1,15:2, 15:3, 15:4, and 15:6, and at least one pigment dispersant of the formula (I), in which n is a number 1, 2, 3 or 4.

Abstract: The invention concerns a pigment preparation based on C.I. Pigment Yellow 155, containing 0.1% to 50% by weight, based on the weight of C.I. Pigment Yellow 155, of at least one pigment dispersant from the group of monoazo or disazo pigments substituted with at least one sulfonic acid group, characterized in that it has a chroma C greater than 53 in the CIELAB system in a solventborne alkyd melamine varnish comprising a 6.7% by weight concentration of the pigment preparation, and/or in that it has a chroma C greater than 35 in the CIELAB system in an aqueous base varnish system in a white reduction comprising a 0.2% by weight concentration of the pigment preparation in white reduction.

Abstract: A toner includes particles of a resin, an optional colorant, a first wax and a second wax, where the toner particles are prepared by an emulsion aggregation process. Additional waxes can also be added for different properties.

Abstract: The present invention relates to a toner and process for preparing a toner for reproduction of a metallic, preferably golden or silvery, hue by a printing process, especially for electrophotography. A congeneric process and/or a congeneric toner is preserved with regard to its metallic hue and at the same time not to impair the essential properties of the toner for the printing process in which it is to be used. At least one metallic pigment is provided with a coating of silicate and subsequently with an organic layer and combining the thus obtained particle with toner material.

Abstract: In an imaging color toner employing a photofixing system, a binder resin, which contains, as a principal component, a polyester resin obtained by mixing a first polyester resin having a softening point Tsp of not lower than 120° C. and lower than 170° C. with a second polyester resin having a softening point Tsp of not lower than 80° C. and lower than 110° C. in a weight ratio of 80:20 to 20:80, is used. The color toner is used in an electrophotographic process and other imaging processes.

Abstract: There are disclosed an electrophotographic toner including a compound represented by formula (1) and a compound represented by formula (2). In Formula (1), R1, R2, R3, and R4 each independently represent a hydrogen atom, an alkyl group or an aromatic group, and X? represents a molybdate anion or a tungstate anion. In Formula (2), R5+ and R6+ each independently represent a hydrogen ion, an ammonium ion, an iminium ion, or a phosphonium ion, and R7, R8, R9, R10, R11, R12, R13, and R14 each independently represent a hydrogen atom or an alkyl group.

Abstract: A toner, and an electrophotographic apparatus and an electrophotographic process cartridge using the toner are provided having excellent charge stability without adversely affecting electric properties of the toner even when used for a long period of time and having excellent image density stability without bringing about image deletion and blurring. The toner includes colored particles containing at least a binder resin and a colorant, and two or more external additives. At least one of the external additives includes hydrophobic treated mesoporous particles, and the mesoporous particles are inorganic particles of at least one type selected from the group consisting of silica, titanium oxide, alumina, cerium oxide, and strontium titanate.

Abstract: An electrophotographic toner contains at least a binder resin and a colorant, and log10{[Cu]/[C]} satisfies the following equation (1): ?5.0?log10{[Cu]/[C]}??3.5 ??(1) in which, [C] represents a carbon content (%) and [Cu] represents a copper content (%), measured with fluorescent X-ray. An electrophotographic developer containing the toner, a method for producing the toner, and a method for forming an image by using the toner are also provided.

Abstract: An electrophotographic toner is disclosed. The toner is composed of a dye chelatable with a metal represented by the formula (1) and a copper compound represented by the formula (2) and a thermoplastic resin: In the formula, R1, R2, R3, and R4 each represents a hydrogen atom or a substituent. Z1 represents a 5 or 6-membered heterocyclic ring containing at least one nitrogen atom, which heterocyclic ring may have a substituent or form a condensed ring. Z2 represents a 5 or 6-membered heterocyclic ring which heterocyclic ring may have a substituent or form a condensed ring. Cu2+(X1)m(X2)n.W1 ??formula (2) wherein X1 and X2 are each a monodentate or didentate ligand, provided that X1 and X2 may link with each other which may be the same or different from each other; n and m are each an integer of 0 to 2; W1 is a counter ion when a counter ion is required for neutralization of charge.

Abstract: An electrostatic image developing toner comprising an amide ester represented by formula (1): wherein R1CO— and R2CO— each independently represents a saturated or unsaturated acyl group having a carbon number of 16 to 24, which may have a hydroxyl group; R3 represents a linear or branched alkyl group having a carbon number of 1 to 3; and R4 represents a linear or branched alkylene group having a carbon number of 1 to 6 or a linear or branched alkenylene group having a carbon number of 2 to 6.

Abstract: A toner for electrostatic latent image development includes a coloring agent and a resin wherein the toner is formed by a polymerization method and a content of aromatic amine contained in the toner is 50 ppm or less, and a volume average particle size of the toner is 3 to 8 ?m; and an image forming method employs the same toner.

Abstract: Disclosed is a toner used for an image forming apparatus, comprising an organic photoreceptor as a latent image supporting material and a cleaning blade for removing a residual toner on the organic photoreceptor after a transfer process, wherein the friction coefficient between the organic photoreceptor and the toner is from 0.30 to 0.65, the toner contains at least one kind of inorganic fine particles on the surface, and one of the inorganic fine particles is made of silica.

Abstract: An object is to provide an electrostatic charge image developing toner and an image forming method using the same capable of maintaining image properties for a long duration, which exhibit not only sufficient transparency and chromaticness, accompanied with high color reproduction and excellent charging characteristic, but also excellent heat resistance, together further with excellent light fastness and sufficient image holding ability. Disclosed is an electrostatic charge image developing toner of the present invention comprising a binder resin for toner particle formation and colorant particles dispersed in the binder resin, wherein the colorant particles comprise a dye and an antioxidant. Further, the electrostatic charge image developing toner wherein a volume-based median particle diameter of the colorant particles is preferably 10-100 nm, and also the dye contained in the colorant particles is preferably an oil-soluble dye or a metal chelate dye.

Abstract: A toner comprising a resin binder, a black colorant comprising a composite oxide of two or more metals, and a charge control agent comprising a quaternary ammonium salt. The toner is suitably used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A toner containing a mixture of a sulfopolyester resin, a colorant and an alkyl amide.

Abstract: In an electrophotographic apparatus, which forms a color image by transferring a plurality of toner images having different colors onto an image-receiving sheet so as to be stacked and fixed thereon, even in the case of carrying out an oil-less fixing process and allowing the process speed to vary within wide range, the present invention provides a binder resin, toner and an electrophotographic apparatus which make it possible to achieve both superior fixing property and anti-offset property, and consequently to form a color image with high color reproducibility and high quality.

Abstract: Positively charged coated toner particles are provided that comprise a plurality of polymeric binder particles that are substantially free of positively charged pigment and a coating material comprising at least one positively charged pigment coated on the outside surface of the polymeric binder particles. In one embodiment, a majority of the specific charge of the toner particles is contributed from the positively charged pigment. In another embodiment, the toner particles are substantially free of additional charge director or charge control additive. Electrographic toner compositions comprising these particles are also provided.

Abstract: A toner including core particles containing at least a resin and a colorant and coated with a resin coating layer is provided. The core particles are formed by flocculating and fusion-bonding at least resin microparticles and colorant microparticles dispersed in fluid dispersion, while two or more coating layers are formed over the core particles. A wax is added to at least one of the coating layer(s) but for the outermost coating layer, and the core particles. A ratio d/r between an average thickness d of the overall coating layers and a volume average particle size r of the core particles is adjusted to 0.01 to 0.6.

Abstract: The present invention provides a safe charge control agent which exhibits an excellent negative chargeability and excellent dispersibility in and compatibility with binder resins, and is even applicable for col or toners. Specifically, the charge control agent consists of a naphthol derivative of formula [I]: and a salt thereof, and an electrophotographic toner comprising the agent are provided.

Abstract: The present invention relates to a novel quinacridone pigment compositions, a process using a mixed amine synthesis for the ultimate production of the compositions and to their use as colorants for pigmenting high molecular weight organic materials.

Abstract: A toner including particles of a resin, an optional colorant, and a crystalline wax, where the crystalline wax is selected from aliphatic polar amide functionalized waxes, carboxylic acid-terminated polyethylene waxes, aliphatic waxes consisting of esters of hydroxylated unsaturated fatty acids, high acid waxes, and mixtures thereof, is prepared by an emulsion aggregation process.

Abstract: A pigment preparation comprising a) at least one diketopyrrolopyrrole pigment of the formula (V) as a base pigment and b) at least one pigment dispersing agent based on sulphonated diketopyrrolopyrrole derivatives and the use thereof for the undistorted coloration of plastics

Abstract: The invention relates to a diaryl yellow pigment preparation, including a) at least one diaryl yellow pigment b) at least one natural resin on the basis of rosin or modified rosin, c) at least one compound of formula (1), and d) an aluminum, zinc, manganese or iron compound in an amount of from 0.1 to 8% by weight (calculated as a metal cation), based on component b). The inventive preparations are suitable for a variety of applications, among them the production of printing inks, especially offset printing inks.

Abstract: The present invention relates to a toner, comprising a binder resin, a colorant and two kinds of infrared absorbing agents, and having a maximum absorbance of the toner in a wavelength range of 810 to 870 nm that is greater, preferably two or more times greater than the maximum absorbance of the toner in a wavelength range of 870 to 1,000 nm, and also relates to an image-forming method which uses a flash fixing system with a xenon lamp serving as its light source, and is characterized by using the above-mentioned toner.

Abstract: A non-contact heat fixing toner, comprising a binder resin, a colorant, an infrared absorbing agent, a first wax and a second wax, wherein a difference (X-Y) between the maximum peak temperature (X; ° C.) in the differential thermal curve in the first wax and Tg (Y; ° C.) of the binder resin is within the range from ?5 to +10° C.

Abstract: An external additive for electrostatically charged image developing toner is provided. The additive includes spherical hydrophobic fine silica particles having primary particles with a particle diameter of from 0.01 to 5 ?m and having been treated with a compound selected from the group consisting of a quaternary ammonium salt compound, a fluoroalkyl-group- or fluoroalkenyl-group- containing betaine compound and a silicone oil. The fine silica particles fulfill conditions (i) and (ii), as described in the disclosure. The external additive does not react or has no interaction with an organic photoreceptor and therefore change in quality does not occur or the photoreceptor is not scraped. Furthermore, it has a good flowability and therefore adhesion of a toner to the photoreceptor does not occur.

Abstract: The present invention provides an alkylenebisnaphthol derivative represented by formula [I]: and a salt thereof. The compound of the present invention has an excellent triboelectric charge property and useful as charge control agent for electrophotographic toners.

Abstract: A toner containing a binder resin, a colorant, a charge control agent, and a thiazolyl disulfide compound or a thiuram disulfide compound. A process for producing a toner comprising polymerization of a polymerizable monomer composition that contains a polymerizable monomer and a colorant in an aqueous medium in the presence of a compound selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound.

Abstract: An image removing method including bringing an outermost layer of a removing member into contact with an image fixed on an image support without applying a liquid to the image while heating the image and the outermost layer; and separating the removing member from the image support to remove the image from the image support, wherein the removing member includes a substrate and the outermost layer which is located overlying the substrate and which includes a thermoplastic resin, and wherein the image includes a removing agent which can decrease adhesion force of the image to the image support when heated.

Abstract: Quinophthalone derivatives have the general formula I where R1, R2, R3 and R5 are independently hydrogen, halogen or C1-C4-alkyl; R4 is —SO3H, —SO3+N+R6R7R8R9, —SO2NR6R7, —CH2NR6R7, —CH2R10, —COOH, —COO?N+R6R7R8R9, —COOR11, —COR11, —NO2 or C1-C4-alkyl; R6, R7, R8 and R9 are independently hydrogen; C1-C22-alkyl or C2-C22-alkenyl whose carbon chains may be interrupted by one or more moieties selected from the group consisting of —O—, —S—, —NR12—, —CO— and —SO2— and/or which may each be mono- or polysubstituted by hydroxyl, halogen, aryl, C1-C4-alkoxy and/or acetyl; C3-C8-cycloalkyl whose carbon skeleton may be interrupted by one or more moieties selected from the group consisting of —O—, —S—, —NR12— and —CO— and/or which may be mono- or polysubstituted by hydroxyl, halogen, aryl, C1-C4-alkoxy and/or acetyl; dehydroabietyl or aryl; R6 and R7 or R6, R7 and R8 are together a 5- to 7-membered cyclic radical which includes the nitrogen atom and may include further heteroatoms; R10 is R11 is alkyl R6; R12 is

Abstract: The present invention provides an alkylenebisnaphthol derivative represented by formula [I]: 1