| Entries |
| Document | Title | Date |
|---|
| 20080227012 | CHARGE CONTROL AGENT AND TONER COMPRISING THE SAME - Taught herein is a charge control agent comprising a specific type of gallic acid metal complex represented by the following Chemical Formula (1) or Chemical Formula (2): | 09-18-2008 |
| 20080299475 | Developer for Development of Electrostatic Image and Production Process Thereof - A developer for development of electrostatic images, comprising colored particles containing a binder resin, a colorant and a parting agent, and an external additive, wherein the developer has properties that a work function is at least 5.70 eV; when excitation energy (eV) in the measurement of the work function is plotted on an axis of abscissa, and a normalized photoelectron yield represented by the 0.5th power of a photoelectron yield per unit photon is plotted on an axis of ordinate, a gradient of the normalized photoelectron yield to the excitation energy is at least 15/eV; and an extraction quantity with methanol is 5.0% by weight or less, and a production process thereof. | 12-04-2008 |
| 20080299476 | Toner Formulation - The present disclosure relates to a method of forming a toner composition, and to a toner composition, that has a controlled particle size distribution, wherein the particle size distribution may be controlled by adjusting the concentration of a charge control additive in a chemical process of toner manufacture. The toner may therefore have a controlled amount of toner particles having diameters of less than or equal to about 4.0 microns. The toner may therefore provide improved resistance to filming on a given printer component. | 12-04-2008 |
| 20080311502 | Toner For Development of Electrostatic Image - A toner for development of electrostatic images, comprising colored particles and an external additive, wherein the colored particles has a volume average particle diameter of 3 to 10 μm and an average circularity of 0.950 to 0.995, and in a molecular weight distribution of THF-soluble matter, which is obtained by filtering a dispersion liquid prepared by stirring the toner in THF, by GPC measurement, a peak area a of a molecular weight range of 500,000 to 5,000,000 is 5 to 15% based on the peak area of the whole range, a peak area b of a molecular weight range of 500,000 to 5,000,000 of tetrahydrofuran-soluble matter, which is obtained by filtering a dispersion liquid prepared by further subjecting the above dispersion liquid to an ultrasonic treatment, is 1 to 10% based on the peak area of the whole range, and the peak area a and the peak area b satisfy the relationship of 0≦a−b≦5. | 12-18-2008 |
| 20080318148 | TONER AND METHOD FOR PRODUCING THE SAME AND DEVELOPER - A toner containing base particles produced by dissolving and/or dispersing a toner material in an organic solvent so as to prepare a toner material solution, and emulsifying and/or dispersing the toner material solution in an aqueous medium, wherein the toner material contains a binder resin and a releasing agent, the binder resin contains a polyester resin, and the releasing agent is a hydrocarbon wax which is modified with a carboxylic acid or carboxylic anhydride. | 12-25-2008 |
| 20090011353 | Black Toner - In a black toner having at least a binder resin and an iron-titanium composite oxide as a colorant; the iron-titanium composite oxide is contained in a specific amount; the black toner has a specific weight average particle diameter and a specific saturation magnetization; the black toner has, in X-ray diffraction thereof, a maximum peak at 2θ=from 32.5 to 33.1 degrees, having a half width of 0.25 degree or less. The black toner has, in a proportion of less than 30% by number, an iron-titanium composite oxide having, in a sectional photograph of the toner, a maximum frequency of linearity within the range where the linearity is smaller than 2.4 and having a linearity of 3.0 or more, in regard to the number frequency distribution of the linearity of the iron-titanium composite oxide. | 01-08-2009 |
| 20090029278 | UV curable toner with improved scratch resistance - A radiation curable toner is described comprising at least a radiation curable binder (e.g. a UV curable polymer), a photoinitiator, and a wax; wherein the wax is present in a concentration ranging from 0.3 to 3% by weight. The ratio of scratch resistance after curing to scratch resistance before curing is preferably at least 2. | 01-29-2009 |
| 20090035681 | TONER, PROCESS FOR PRODUCING TONER, AND TWO-COMPONENT DEVELOPING AGENT - A toner or two-component developer is obtained by mixing, aggregating, and heating resin particles, colorant particles, and wax particles in an aqueous medium. A gel permeation chromatography (GPC) measurement of the resin particles shows that a weight-average molecular weight is 10000 to 60000, and the ratio of the weight-average molecular weight to a number-average molecular weight is 1.5 to 6. The wax particles include at least a first wax and a second wax. An endothermic peak temperature (melting point Tmw | 02-05-2009 |
| 20090035682 | TONER AND PROCESS FOR PRODUCING THE SAME - A toner of the present invention includes a first wax and a second wax. The endothermic peak temperature of the first wax by the DSC method is 50° C. to 90° C. The endothermic peak temperature of the second wax is 5° C. to 50° C. higher than that of the first wax. Jmw | 02-05-2009 |
| 20090068579 | FULL-COLOR TONER FOR ELECTROPHOTOGRAPHY, AND PRODUCTION METHOD FOR THE SAME - A production method for a full-color toner for electrophotography includes melt-kneading a toner material by use of an open-roll kneader, the toner material containing at least a binder resin, a wax, a colorant, and a charge control agent, wherein Mze/Mzi is 0.3 to 0.7, where Mze is a Z-average molecular weight of a resin component of the toner material to be supplied in the open-roll kneader, and Mzi is a Z-average molecular weight of a resin component of a kneaded product to be discharged from the open-roll kneader, and wherein a zirconium compound of a salicylic acid derivative is used as the charge control agent. | 03-12-2009 |
| 20090092917 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner including a binder resin including a polyester resin, a colorant, and a release agent including a polyglycerin ester having a melt viscosity of from 1.0 to 40 mPa·sec at 120° C. and a hydroxyl value of from 0 to 100 mgKOH/g is provided. The polyglycerin ester is an ester of a polyglycerin having an average polymerization degree of from 2 to 10 and an aliphatic acid having 16 to 24 carbon atoms in average. | 04-09-2009 |
| 20090098475 | TONER, METHOD OF MANUFACTURING THE SAME, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - There are provided a toner, a method of manufacturing the toner, a two-component developer, a developing device, and an image forming apparatus, which are excellent in a charge rising property, environmental stability, and life stability during printing and which cause less fogging. The toner contains a core particle containing binder resin and colorant, and a coating layer which contains resin and a charge control agent and is formed on a surface of the core particle. At least a part of the resin contained in the coating layer is melt-bonded to the core particle, and the charge control agent is dispersed and immobilized in the coating layer. The dispersed charge control agent has a dispersion diameter of less than 1 μm. | 04-16-2009 |
| 20090142683 | COLOR TONER AND TWO-COMPONENT DEVELOPER - The present invention relates to a toner which has good property such as fixability, coloring power, developability, durability, and environmental stability and so on. More specifically, the present invention relates to a color toner containing at least a binder resin, a colorant, and a wax, in which: a wax concentration of an extract obtained by dispersing the toner into n-hexane at a concentration of 15 mg/cm | 06-04-2009 |
| 20090162774 | Toner and Manufacturing Process therefor - The invention provides a process for the manufacture of a toner which comprises the steps of:
| 06-25-2009 |
| 20090186289 | TONER, IMAGE FORMATION METHOD AND IMAGE FORMING APPARATUS - A toner including a binder resin, a coloring agent, an infrared absorbing agent having at least a maximum absorption wavelength in a wavelength range of from 700 to 1,100 nm, and a fixed surface protective agent, wherein, for a cross section observation of the toner, the infrared absorbing agent which exists in the vicinity of the fixed surface protective agent occupies at least 60% by area based on the entire area of the infrared absorbing agent and is present inside the toner closer to the surface of the toner than to the center area thereof. | 07-23-2009 |
| 20090208861 | DEVELOPER AND IMAGE FORMING APPARATUS - A developer used in an image forming apparatus contains a binder resin containing a polyester resin, a releasing agent containing natural ester wax (A) and synthetic ester wax (B), and a colorant. | 08-20-2009 |
| 20090214973 | TONER, DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner is provided that includes a release agent, a colorant, a binder resin including a polyester resin, and a fixing auxiliary component including an ester compound of a fatty acid with an alcohol. The fatty acid includes stearic acid and behenic acid in a total amount of 80% by weight or more. The alcohol includes ethylene glycol in an amount of 80% by weight or more. The ester compound has a hydroxyl value of 10 to 100 mgKOH/g. | 08-27-2009 |
| 20090233203 | TONER AND METHOD FOR PRODUCING THE SAME - The present invention provides a toner comprising core particles that contain at least first resin particles, colorant particles, and wax particles, in an aqueous medium, wherein the core particles contain nucleus particles in which the first resin particles and the colorant particles are aggregated and particles in which the first resin particles and the wax particles are aggregated. Accordingly, the treatment time for forming the core particles can be shortened, generation of colorant particles or wax particles that are not aggregated but suspended in a liquid can be suppressed, and particles having a small particle size and a sharp particle size distribution can be formed without classification, by suppressing an increase in the size of core particles. | 09-17-2009 |
| 20090233204 | TONER FOR IMAGE FORMATION, METHOD FOR PRODUCING TONER, CONTAINER CONTAINING TONER, TWO-COMPONENT DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD - Provided is a toner for image formation, granulated by dispersing, emulsifying, or both dispersing and emulsifying an oil phase containing toner constituting materials in an aqueous medium. The toner constituting materials contain a binder resin, a colorant and a pigment dispersant which is a polyester derivative having an acid value of 28 to 50 mgKOH/g and an amine value of 1 to 50 mgKOH/g, and satisfy the following Expressions 1 and 2, where Expression 1 represents a mass ratio, α is a glass transition temperature of the binder resin, and β is a glass transition temperature of a mixture of the binder resin and the pigment dispersant in the ratio of Expression 1. | 09-17-2009 |
| 20090253065 | TONER, PROCESS FOR PRODUCING TONER, AND TWO-COMPONENT DEVELOPING AGENT - A toner or two-component developer is provided. The toner includes toner base particles obtained by mixing in an aqueous medium a first resin particle dispersion, a colorant particle dispersion, and a wax particle dispersion, aggregating the mixed dispersion to form core particles at least part of which is melted, adding a second resin particle dispersion to a core particle dispersion in which the core particles are dispersed, and fusing the second resin particles with the core particles by heating. A GPC measurement of the second resin particles shows that the number-average molecular weight (Mn2) is 9000 to 30000, the weight-average molecular weight (Mw2) is 50000 to 500000, and the ratio (Mw2/Mn2) of the weight-average molecular weight (Mw2) to the number-average molecular weight (Mn2) is 2 to 10. The wax particles include at least a first wax and a second wax. An endothermic peak temperature (melting point Tmw1) of the first wax based on a DSC method is 50° C. to 90° C. The relationship between an endothermic peak temperature (melting point Tmw2) of the second wax based on the DSC method and Tmw1 is expressed as 5+Tmw1 (° C.)≦Tmw2 (° C.)≦50+Tmw1 (° C.). | 10-08-2009 |
| 20090269691 | POLYESTER RESIN FOR TONER, METHOD FOR PRODUCING SAME AND TONER - Disclosed is a toner which is excellent in low-temperature fixability, high-temperature offset resistance, storage stability and durability, while having a wide range of fixing temperature. Also disclosed is a polyester resin used for such a toner. The polyester resin is one of the following polyester resin (A)-(E) for toners. (A) A polyester resin for toners having an Mp as determined by GPC of not less than 12,000 and having an unsaturated double bond (B) A polyester resin for toners obtained by crosslinking the polyester resin (A) (C) A polyester resin for toners containing the polyester resin (A) and another polyester resin having an Mp as determined by GPC of less than 12,000 (D) A polyester resin for toners obtained by crosslinking the polyester resin (C) (E) A polyester resin for toners containing a THF soluble fraction and a THF insoluble fraction wherein the Mw/Mn of the THF soluble fraction is not less than 6 and the total of the acid value and the hydroxyl value of the THF insoluble fraction is not more than 40 mgKOH/g. | 10-29-2009 |
| 20090280423 | METHOD FOR PRODUCING RESIN DISPERSIONS AND RESIN PARTICLES - The present invention concerns a method for producing an aqueous dispersion (X1), the method including a step that includes mixing an aqueous dispersion liquid (W) of resin particles (A) comprising a resin (a) with a precursor (b0) of a resin (b) or an oily liquid (OL) comprising the precursor (b0) and an organic solvent to disperse the precursor (b0) or the oily liquid (OL) in the aqueous dispersion liquid (W), followed by causing the precursor (b0) to react in the aqueous dispersion liquid (W) to form resin particles (B) comprising the resin (b), thereby obtaining the aqueous dispersion (X1) of resin particles (C) having a structure where resin particles (A) are adhered on the surface of the resin particles (B), wherein at least one of the resin (a) and the resin (b) contains a polyester resin (p1) formed in the presence of a specific titanium catalyst (t) or a resin (p2) having the polyester resin (p1) as a constituent unit. | 11-12-2009 |
| 20090280424 | Toner for developing electrostatically charged image and process for producing the same - Provided as toners for developing electrostatically charged images capable of preventing a sticking and curling phenomenon even with an increase in number of printed sheets and processes for producing the same, with the use of a cyclic polyolefinic resin, are a toner for developing electrostatically charged images contains a cyclic polyolefinic resin and a polar resin wherein 10 to 50 parts by weight of the polar resin is present in relation to 100 parts by weight of the cyclic polyolefinic resin, and a process for producing a toner for developing electrostatically charged images comprises a step of melt-kneading at least a cyclic polyolefinic resin and a coloring agent to obtain a kneaded product, a step of grinding the kneaded product to obtain colored particles, and a step of melt-kneading, grinding and classifying the colored particles and a polar resin to obtain the toner. | 11-12-2009 |
| 20090325099 | TONER, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - A toner produced by a method including dissolving or dispersing toner components comprising a colorant and at least one of a binder resin and a precursor thereof in an organic solvent to prepare a toner components liquid, dispersing the toner components liquid in an aqueous medium including a surfactant, a particulate resin A having the same polarity as the surfactant and a volume average particle diameter of from 5 to 50 nm, and a particulate resin B having a volume average particle diameter of from 10 to 500 nm to form liquid droplets, and removing the organic solvent from the liquid droplets. The particulate resin B is incompatible with the binder resin and swells in the organic solvent. | 12-31-2009 |
| 20100009276 | DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME - In a method for producing a developing agent by coagulating a toner fine particle dispersion including a toner fine particle, an aqueous medium and a dispersant to obtain a toner particle, the coagulation is carried out only by pH adjustment, the dispersant is a surfactant, and a concentration of the surfactant is a concentration of not more than a critical micell concentration of the toner material dispersion. | 01-14-2010 |
| 20100021839 | TONER COMPOSITIONS - Methods for modifying the acid value of an unsaturated polyester resin suitable for use in forming toner particles are provided. In embodiments, methods may include contacting at least one unsaturated polyester resin with at least one grafting monomer, polymerizing the graft monomer and unsaturated polyester resin to form a graft copolymer, and then utilizing the graft copolymer to form toner particles by combining the graft copolymer with an optional colorant, at least one surfactant, and an optional wax. Toners produced by these methods are also provided. | 01-28-2010 |
| 20100028794 | AQUEOUS DISPERSION OF FINE RESIN PARTICLES, METHOD FOR PRODUCING AQUEOUS DISPERSION OF FINE RESIN PARTICLES, AND METHOD FOR PRODUCING TONER PARTICLES - The present invention provides an aqueous dispersion of nonspherical fine resin particles having excellent storage stability and processability such as aggregation and adherence to other substances, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles. The present invention relates to an aqueous dispersion of fine resin particles characterized in that the fine resin particles are nonspherical particles with an average minor axis being 0.02 μm or more and 1.00 μm or less and an average ratio of a major axis to a minor axis being 2.0 or more and 5.0 or less, a method for producing the aqueous dispersion of fine resin particles, and a method for producing toner particles using the aqueous dispersion of fine resin particles. | 02-04-2010 |
| 20100028795 | TONER - In a toner containing at least a binder resin, a colorant, an ester compound and a low-melting material, the ester compound is an ester of dipentaerythritol with a carboxylic acid having 18 or more to 25 or less carbon atoms, and, where the melting point of the ester compound is represented by Tm | 02-04-2010 |
| 20100040967 | HYPER-BRANCHED POLYMER OF AN ESTER TYPE, AND A TONER FOR ELECTROPHOTOGRAPHY USING THE SAME - [PROBLEMS] To produce a hyper-branched polymer having excellent resin strength, a good anti-blocking property and less environmental dependence. | 02-18-2010 |
| 20100047706 | ELECTROSTATIC-IMAGE-DEVELOPING TONER, PROCESS FOR PRODUCING ELECTROSTATIC-IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, IMAGE-FORMING METHOD, AND IMAGE-FORMING APPARATUS - An electrostatic-image-developing toner is obtained by aggregating: resin particles, each of which has a core-shell structure, in which a difference in glass transition temperature between a resin constituting the core and a resin constituting the shell is about 20° C. or more; and releasing agent particles, each of which includes a polyester block copolymer having a weight-average molecular weight of about 3,000 or less and containing a non-crystalline polyester block containing a cyclic structure in the main chain and a crystalline polyester block containing no cyclic structure in the main chain. | 02-25-2010 |
| 20100055592 | TONER COMPOSITIONS - 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. | 03-04-2010 |
| 20100055593 | TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a core and a shell, one or both of which may include a polyester gel. The gel in the shell and/or core may prevent a crystalline resin in the core from migrating to the toner surface. | 03-04-2010 |
| 20100086867 | TONER CONTAINING FLUORESCENT NANOPARTICLES - A method for making toners to include at least one nanoscale fluorescent pigment particle composition and/or a fluorescent organic nanoparticle composition. The particles are incorporated into emulsion of toner and used in making toner via emulsion aggregation. Such toners may have a core and/or a shell and the clay composites may be included within the core, the shell or both. The fluorescent organic nanoparticle composition includes a polymeric matrix obtained by modified EA latex process and/or emulsion polymerization and one or more fluorescent dyes and the nanoscale fluorescent pigment particle composition includes pigment molecules with at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer, and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles. | 04-08-2010 |
| 20100104965 | TONER, DEVELOPER, AND IMAGE FORMING METHOD AND APPARATUS USING THE TONER - The toner includes a binder resin; a release agent; a colorant; and a dispersing resin configured to disperse the release agent. The dispersing resin includes a polyhydroxycarboxylic acid unit obtained from an optically active monomer. The polyhydroxycarboxylic acid unit has an optical purity of not greater than 80%, wherein the optical purity is defined as the absolute value of difference between the mole percentage of a L-monomer in the optically active monomer and the mole percentage of a D-monomer in the optically active monomer. | 04-29-2010 |
| 20100124714 | DEVELOPING AGENT, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A developing agent is used for a recycle type image forming apparatus including an image bearing body on which an electrostatic latent image is developed with the developing agent and an image transferred to a transfer medium is formed, and includes a toner particle, a magnetic carrier to charge the toner particle to a specified polarity, and a circulation agent which is charged to a polarity reverse to that of the toner particle in the developing agent, has a primary particle diameter of 20 to 100 μm, has a magnetization lower than that of the magnetic carrier, and has a transfer efficiency of 0 to 10% from the image bearing body to the transfer medium. | 05-20-2010 |
| 20100129748 | TONER AND IMAGE FORMING METHOD USING THE TONER - A toner satisfying at least one of the following relationships: | 05-27-2010 |
| 20100136470 | METHOD FOR PRODUCTION OF RESIN EMULSION - The present invention relates to a resin emulsion which has a good emulsification performance even when produced by using a crosslinked polyester resin as a binder resin, and also is capable of producing a toner having an excellent storage property therefrom; and a process for producing the resin emulsion. The process for producing a resin emulsion according to the present invention, includes the steps of: (a) mixing a resin containing a polyester having at least one constitutional unit selected from the group consisting of a constitutional unit derived from a trivalent or higher-valent alcohol component and a constitutional unit derived from a trivalent or higher-valent carboxylic acid component, an anionic surfactant, a nonionic surfactant and an aqueous medium with each other at a temperature not lower than a softening temperature (Ts) of the resin as measured by a flow tester method, the nonionic surfactant and the aqueous medium being used in amounts of from 0.1 to 1.0 part by weight and from 10 to 50 parts by weight, respectively, on the basis of 100 parts by weight of the resin; and (b) neutralizing a mixture obtained in the step (a) with a basic compound in an aqueous medium at a temperature not higher than a softening point (T | 06-03-2010 |
| 20100136471 | TONER AND DEVELOPER - A toner, wherein a binder resin contains a polyester resin (A) produced by polycondensing an alcohol component with a carboxylic acid component which contains a rosin compound in an amount of 5% by mass or more of the total amount by mass of the alcohol component and the carboxylic acid component, and a polyester resin (B) produced by polycondensing an alcohol component containing an alkylene oxide adduct of bisphenol A represented by General Formula (1) given below with a carboxylic acid component, and wherein the toner contains abietic acid in an amount of 0.01% by mass to 1% by mass: | 06-03-2010 |
| 20100151374 | TONER PRODUCT AND METHOD OF FORMING IMAGE - A toner product containing a toner and a toner container holding the toner, wherein the toner contains a toner particle having an amount of a carboxyl group present on a surface of the toner particle of 1.0×10 | 06-17-2010 |
| 20100151375 | TONER PRODUCT AND IMAGE FORMING METHOD - An objective is to provide a toner product with which the difference between the water content of a toner in a toner container and the water content of another toner present in an image forming apparatus is minimized, and a sharp charging amount distribution can be obtained to form high-quality images; and also to provide an image forming method thereof. Also disclosed is a toner product in which a toner is stored in a toner container, wherein the toner possesses a toner particle having an amount of a carboxyl group present on a surface of the toner particle, being 1.0×10 | 06-17-2010 |
| 20100173241 | POSITIVELY-CHARGEABLE TONER FOR DEVELOPING ELECTROSTATIC IMAGE - The present invention is to provide a positively-chargeable toner for developing electrostatic images which is applicable to a toner replenishment-type image forming device, is excellent in charge stability of toners and initial charging speed and thus producing less initial fog and being less likely to cause filming on photosensitive members upon replenishment of toners, can impart a stable charging ability to toner particles over time, and thus hardly causes deterioration of image quality due to fog or the like, and therefore is excellent in printing durability even if continuous printing of a large number of prints is performed. A positively-chargeable toner for developing electrostatic images comprising colored resin particles containing a binder resin, a colorant and a charge control agent, and an external additive, wherein the external additive contains fatty acid alkali metal salt particles or fatty acid alkaline earth metal salt particles having a number average primary particle diameter of 0.1 to 1 μm, and a content of the fatty acid alkali metal salt particles or the fatty acid alkaline earth metal salt particles is in the range from 0.01 to 0.5 parts by weight with respect to 100 parts by weight of the colored resin particles. | 07-08-2010 |
| 20100173242 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - 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. | 07-08-2010 |
| 20100178604 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - An electrophotographic toner includes a latex, a colorant, and a release agent, wherein G′( | 07-15-2010 |
| 20100178605 | TONER TO DEVELOP AN ELECTROSTATIC LATENT IMAGE AND METHOD OF PREPARING THE SAME - 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 (η*) in a range of about 2.5×10 | 07-15-2010 |
| 20100178606 | TONER - Disclosed is a toner including: a resin; coloring agent and release agent including compound or compounds represented by the following general formula (1): R | 07-15-2010 |
| 20100196812 | RESIN FOR TONER AND TONER COMPOSITION - The object is to develop a resin for a toner, which has both of hot offset resistance and a low-temperature fixing property even when used in a high-speed and energy-saving toner. Thus, disclosed is a resin for a toner, which comprises a polyester resin (A) having a THF insoluble fraction content of 1 to 36 wt %, a peak top molecular weight of 4500 to 20000 as measured by gel permeation chromatography on a THF soluble fraction, and a softening point of 120 to 180° C., and meeting the requirements represented by the following formulae (1) and (2): | 08-05-2010 |
| 20100196813 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - 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). | 08-05-2010 |
| 20100196814 | TONER USABLE WITH ELECTROPHOTOGRAPHY AND METHOD OF PREPARING THE SAME - A toner usable with electrophotography includes an iron (Fe) content in the toner is in a range of about 1.0×10 | 08-05-2010 |
| 20100216067 | LITHOGRAPHIC PRINTING PLATE DEVELOPING COMPOSITIONS - A concentrated developer can be prepared with less than 60 weight % water and still remain in a single phase with little or no haze or precipitation. This developer concentrate also includes a water-soluble or water-miscible organic solvent, one or more alkyl ether carboxylic acid, coconut oil alkanolamine, coconut fatty alcohol polyglycol ether, β-naphtholethoxylate, and block propylene oxide-ethylene oxide in an amount of at least 0.1 and up to 50 weight % solids, and optionally an alkyl naphthalene sulfonate in an amount of up to 40 weight % solids. The developer concentrate can be diluted up to 80:1 or greater with water and used to process imaged lithographic printing plate precursors. | 08-26-2010 |
| 20100239970 | POLYESTER RESIN AND TONER INCLUDING THE SAME - A toner for an electrophotographic image forming process or an electrostatic printing process, and a polyester resin for the toner are disclosed. The polyester resin comprises: acid components including 70 to 96 mol % of aromatic dibasic acid component, 3 to 20 mol % of cycloaliphatic dibasic acid component, and 1 to 10 mol % of trivalent or higher acid component; alcohol components including 10 to 50 mol % of cycloaliphatic diol component, 2 to 20 mol % of trihydric or higher alcohol component, and 30 to 88 mol % of aliphatic diol component; and a heat stabilizer. | 09-23-2010 |
| 20100255414 | Toner, Process for Making Toner and Use of Toner - A process for the manufacture of a toner comprising toner particles which comprise at least resin and colorant, the process comprising the steps of: providing a mixed dispersion of at least primary resin particles, primary colorant particles and a carboxy functional compound of Formula (1) and/or a salt thereof and/or a complex thereof in a liquid medium, | 10-07-2010 |
| 20100279222 | HIGH IV MELT PHASE POLYESTER POLYMER CATALYZED WITH ANTIMONY CONTAINING COMPOUNDS - A melt phase process for making a polyester polymer melt phase product by adding an antimony containing catalyst to the melt phase, polycondensing the melt containing said catalyst in the melt phase until the It.V. of the melt reaches at least 0.75 dL/g. Polyester polymer melt phase pellets containing antimony residues and having an It.V. of at least 0.75 dL/g are obtained without solid state polymerization. The polyester polymer pellets containing antimony residues and having an It.V. of at least 0.70 dL/g obtained without increasing the molecular weight of the melt phase product by solid state polymerization are fed to an extruder, melted to produce a molten polyester polymer, and extruded through a die to form shaped articles. The melt phase products and articles made thereby have low b* color and/or high L* brightness, and the reaction time to make the melt phase products is short. | 11-04-2010 |
| 20100304287 | POLYESTER SYNTHESIS - 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. | 12-02-2010 |
| 20100330485 | PURIFIED POLYESTER RESINS FOR TONER PERFORMANCE IMPROVEMENT - A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a M | 12-30-2010 |
| 20100330486 | Toner Compositions - A toner including at least one amorphous polyester, at least one crystalline polyester and at least one ester wax, wherein the linear polyester and the at least one ester wax have a difference in solubility parameter of from about 0.1 to about 1.7. | 12-30-2010 |
| 20100330487 | TONER COMPOSITIONS - Coated phosphorescent pigments are provided which may be utilized in toner compositions. In embodiments, the phosphorescent pigment may be coated by a powder coating process. The large pigment particles may be dry blended with dried resin latex particles, thereby coating the pigment surface, followed by heating and shearing in a rotary kiln or extruder to melt the toner resin and fuse it to the pigment surface. The resulting coated particles may be utilized with other toners, in embodiments color toners, to provide phosphorescent images. | 12-30-2010 |
| 20100330488 | POSITIVELY-CHARGEABLE TONER FOR DEVELOPING ELECTROSTATIC IMAGES - The present invention is to provide a positively-chargeable toner for developing electrostatic images, which is excellent in reproductivity of thin lines and in durability and has a stable charging ability and flowability over time. A positively-chargeable toner comprises a colored resin particle and external additives, wherein a spherical colloidal silica particle having a number average primary particle diameter of 30 to 80 nm and a triboelectric charge amount of −50 to +300 μC/g, and a fumed silica particle having a number average primary particle diameter of 5 to 25 nm are contained as the external additives, and wherein a content of the spherical colloidal silica particle is in the range from 0.3 to 2 parts by weight and a content of the fumed silica particle is in the range from 0.1 to 1 parts by weight with respect to 100 parts by weight of the colored resin particle. | 12-30-2010 |
| 20100330489 | ELECTROSTATIC IMAGE DEVELOPING TONER, DEVELOPER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - An electrostatic image developing toner including a toner particle (C), wherein the toner particle (C) has a structure in which a resin particle (A) containing at least a first resin (a) or a coated film (P) containing the first resin (a) is attached to a surface of a resin-containing particle (B) containing a second resin (b), and wherein the resin (b) includes a polyhydroxycarboxylic acid skeleton, and the resin (a) is a polyester resin containing a polybasic acid and a polyhydric alcohol. | 12-30-2010 |
| 20110003242 | TONER AND TONER MANUFACTURING METHOD - Disclosed is a toner comprising at least a resin and a coloring agent, wherein the resin comprises toner particles in which a polyester resin unit is cross-linked by a diatomic cross-linking group expressed by a following general formula (1): | 01-06-2011 |
| 20110008721 | ELECTROPHOTOGRAPHIC TONER - In the present invention, provided is an eleetrophotographic toner in which low temperature fixing is achieved, and high storage stability is obtained without generating tacking with respect to fixed images to be formed. It is a feature that this electrophotogaphic toner possesses at least a binder resin, a colorant and a releasing agent, wherein the releasing agent comprises an ester compound and an aliphatic hydroxycarboxylic acid compound. | 01-13-2011 |
| 20110014560 | ELECTROPHOTOGRAPHIC TONER AND METHOD OF PREPARING THE SAME - 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 | 01-20-2011 |
| 20110020743 | BAROPLASTIC, RESIN COMPOSITION, ELECTROSTATIC-IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A baroplastic includes a first resin with a first Tg; and a second resin with a second Tg that is lower than the first Tg by 20° C. or more, and has a photoreactive group. | 01-27-2011 |
| 20110053074 | CAPSULE TONER AND METHOD OF MANUFACTURING THE SAME - A capsule toner that a blocking resistance is improved without harming a low temperature fixation property, and a method of manufacturing the same are provided. A capsule toner includes a toner base particle containing a binder resin and a colorant, and a resin coating layer containing a crystalline polyester resin and an amorphous resin, the resin coating layer coating a surface of the toner base particle. | 03-03-2011 |
| 20110053075 | TONER AND METHOD FOR MANUFACTURING THE SAME - A toner comprising: a component consisting of a thermoplastic resin containing an amorphous plant-derived resin having a carboxyl group; a component consisting of a crystalline epoxy resin having a glycidyl group; a component consisting of a cross-linked resin generated through a reaction between the carboxyl group of the plant-derived resin and the glycidyl group of the crystalline epoxy resin; and a colorant. | 03-03-2011 |
| 20110065038 | CURABLE TONER COMPOSITIONS AND PROCESSES - Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may include small particles having a shell with a high amount of resin, which optimizes the charging characteristics of the toner. | 03-17-2011 |
| 20110070538 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core, having a dry powder polymer coating. In embodiments, the coating may also include a colorant, such as carbon black. Processes for coating such carriers with the dry powder polymer coatings are also provided. | 03-24-2011 |
| 20110091803 | CURABLE TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner composition includes toner particles including: an amorphous polyester resin; an optional crystalline resin; an optional colorant; an optional wax; an optional coagulant; and a polymeric or oligomeric hydroxy ketone photo initiator capable of initiating crosslinking of said polyester resin, wherein at least one of the amorphous polyester resin and the optional crystalline resin when present is unsaturated. | 04-21-2011 |
| 20110104605 | ELECTROGRAPHIC TONER AND METHOD OF PREPARING THE SAME - The disclosure provides an electrographic toner having a core layer, which includes a binder, a colorant and two or more types of releasing agents, and a shell layer covering the core layer, and a method of preparing the same. | 05-05-2011 |
| 20110129771 | TRANSPARENT TONER AND IMAGE FORMING METHOD - A transparent toner for forming a glossy surface is disclosed, wherein a critical surface tension of a glossy surface formed by the transparent toner at 20° C. is at least 50 mN/m, and the transparent toner comprises a resin composed of a polymer formed by employing at least a polymerizable monomer containing a carboxylic group (—COOH). An image forming method employing the transparent tone is also disclosed. | 06-02-2011 |
| 20110136053 | Hyper-branched Polyester for use in CPT Toner and Method of Preparing the Same - A hyper-branched polyester and a method of making the same having a tri-functional monomer A3, a di-functional monomer B2 and a mono-functional monomer C1 having a monomer ratio of A3:B2:C1 from about 1:0.2:2 to about 1:1.4:0.2 for use in a chemically processed electrophotographic toner providing a lower fusing temperature. In one form, the hyper-branched polyester includes a tri-hydroxy monomer, a di-acid and its derivatives, and a mono-acid and its derivatives. In other forms, a substituted anhydride and a long chain hydrocarbon carboxylic acid and its derivatives may also be included in the di-functional monomer. | 06-09-2011 |
| 20110171572 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER FOR ELECTROSTATIC IMAGE, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image contains at least one of an oxidation polymerizable monomer and a polymer having an ethylenically unsaturated group, and an oxidation polymerization catalyst in a form of a composite with inorganic particles, wherein a temperature T(10 Mpa) and a temperature T(1 Mpa) satisfies the following expression (1): | 07-14-2011 |
| 20110177445 | MANUFACTURING METHOD FOR POLYESTER PARTICLE DISPERSION LIQUID - The present invention relates to a process for producing a dispersion of polyester particles which includes the step of emulsifying mixed polyester containing (1) an amorphous polyester containing a constitutional unit derived from a trivalent or higher-valent carboxylic acid in an amount of from 2.0 to 12.0 mol % on the basis of whole constitutional units of the whole amorphous polyester and (2) a crystalline polyester, in an aqueous medium in a single vessel, or the step of mixing the mixed polyester with an organic solvent and then adding the aqueous medium to the resulting mixture to emulsify the mixed polyester in a single vessel. The present invention also relates to a dispersion of polyester particles produced by the above production process, as well as a toner for electrophotography which is produced by subjecting the dispersion of the polyester particles to aggregation and coalescence and is excellent in both of a low-temperature fusing property and an anti-hot offset property, and a process for producing the toner. | 07-21-2011 |
| 20110212396 | BIO-BASED AMORPHOUS POLYESTER RESINS FOR EMULSION AGGREGATION TONERS - Disclosed are amorphous polyesters that contain only renewable resources designed for emulsion aggregation toner fabrication. The amorphous polyesters may be obtained from the mixture of three different monomers: 1,4:3,6-dianhydro-D-sorbitol (isosorbide), nonanedioic acid (azelaic acid), and butanedioic acid (succinic acid). Different polymer properties may be achieved depending on the ratio of these three monomers. By altering the ratio, polymers of high to low acid value can be obtained, as well as different ranges of glass transition temperatures. | 09-01-2011 |
| 20110223529 | AQUEOUS PIGMENT DISPERSION AND APPLICATIONS THEREOF - Disclosed are an aqueous pigment dispersion containing at least a pigment, water, a high-molecular dispersant, and an alkali. The high-molecular dispersant is a diblock polymer having a formula (1) of A-B or a triblock polymer having a formula (2) of A-B-C. The diblock or triblock polymer is a diblock or triblock polymer obtained by polymerizing addition-polymerizable monomers with a radical generator while using an organic iodide as a polymerization initiating compound and an organic phosphorus compound, organic nitrogen compound or organic oxygen compound as a catalyst. Also disclosed are a production method and use of the aqueous pigment dispersion. With the high-molecular dispersant obtained by a simple living radical polymerization process free of the problems of conventional living radical polymerization and having a precisely-controlled molecular structure, the aqueous pigment dispersion can be obtained with the pigment dispersed in it. | 09-15-2011 |
| 20110236815 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core having a polymeric coating on at least a portion thereof. The polymer coating possesses cation binding groups. Processes for coating such carriers with the polymeric coatings are also provided. | 09-29-2011 |
| 20110244385 | WATER-BASED PIGMENT PREPARATIONS - The invention relates to aqueous pigment preparations containing (A) at least one organic and/or inorganic pigment, (B) a dispersant of formula (I) or (II), or mixtures of the dispersants of formula (I) and (II), (C) optionally wetting agents, (D) optionally other surfactants and/or dispersants, (E) optionally one or more organic solvents or one or more hydrotropic substances, (F) optionally other additives used conventionally for the production of aqueous pigment dispersions and (G) water. | 10-06-2011 |
| 20110244386 | TONER AND TONER PARTICLE PRODUCING METHOD - A toner includes a toner particle, which contains at least a binding resin, a colorant, and two types of polar resins, i.e., a polar resin H and a polar resin L, and which is obtained with granulation in a water-based medium, wherein solubility parameters, glass transition points, and weight-average molecular weights of the binding resin, the polar resin H, and the polar resin L, as well as amounts of the added resins satisfy respective specific relationships. | 10-06-2011 |
| 20110256477 | TONER - A toner includes toner particles each containing a binder resin, a colorant, and a carboxy-containing styrene-based resin, in which the toner particles are produced in an aqueous medium, each of the toner particles has a styrene-acrylic-based resin component content of 50.0% by mass or more, cyclohexane-insoluble matter A obtained by subjecting the toner to Soxhlet extraction with cyclohexane for 4 hours is 70.0% by mass or more, and cyclohexane-insoluble matter B obtained by subjecting the toner to Soxhlet extraction with cyclohexane for 24 hours is 40.0% by mass or less, and wherein when the z-average molecular weight and the weight-average molecular weight of tetrahydrofuran-soluble matter of the carboxy-containing styrene-based resin determined by gel permeation chromatography measurement are represented by Mz and Mw, respectively, Mz and Mw satisfy the following expressions:
| 10-20-2011 |
| 20110262853 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner containing a fatty acid having 6 to 22 carbon atoms, and a binder resin, wherein the toner is obtained by a method for producing a toner, which contains dissolving or dispersing in an organic solvent the fatty acid having 6 to 22 carbon atoms, and a toner material containing at least the binder resin, so as to prepare a solution or dispersion liquid, emulsifying or dispersing the solution or dispersion liquid in an aqueous medium containing acrylic resin fine particles, so as to prepare an emulsion or dispersion liquid, and removing the organic solvent from the emulsion or dispersion liquid. | 10-27-2011 |
| 20110281210 | DEVELOPING AGENT - According to one embodiment, a developing agent includes a toner resin containing a coloring material, a binder resin, an ester wax and a crystalline polyester resin. The ester wax has an alkyl group with a carbon number of from 32 to 46, when an ion intensity ratio at each carbon number is expressed in terms of percentage, a content of an ester compound having a carbon number showing its maximum intensity ratio is from 20 to 55% by weight of the whole of the wax, and a content of ester compounds with a carbon number of not more than 38 is not more than 10% by weight of the whole of the wax. The ester wax has an endothermic peak measured by DSC of from 60 to 75° C. The crystalline polyester resin has an endothermic peak measured by DSC of from 90 to 110° C. | 11-17-2011 |
| 20110305984 | TONER AND METHOD FOR MANUFACTURING TONER - A toner having a toner particle including a core particle obtained by polymerizing a polymerizable monomer composition containing at least a polymerizable monomer, a colorant, a release agent, a polar resin, and a crystalline polyester in an aqueous medium and an outer shell formed by fixing resin fine particles to the surface of the core particle, wherein the resin constituting the resin fine particles is an amorphous resin and the acid value of the resin fine particles is 4.0 to 50.0 mgKOH/g. | 12-15-2011 |
| 20110305985 | TONER AND METHOD FOR MANUFACTURING THE SAME - A toner includes a binder resin, a colorant, and, a benzilic acid compound. The binder resin contains a polyester resin A obtained by subjecting aromatic dicarboxylic acid, rosin and trivalent or higher-valent alcohol as starting materials to polycondensation, a content of the rosin in a sum of the starting materials being 60% by weight or more, and a polyester resin B obtained by subjecting aromatic dicarboxylic acid and polyhydric alcohol as starting materials to polycondensation. | 12-15-2011 |
| 20110305986 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner containing a binder resin, a colorant, and a releasing agent, wherein the colorant contains a mixed crystal of a C. I. PIGMENT YELLOW 185 and a C. I. PIGMENT YELLOW 139, and wherein a mass ratio of the C. I. PIGMENT YELLOW 185 to the C. I. PIGMENT YELLOW 139 (mass of the C. I. PIGMENT YELLOW 185/mass of the C. I. PIGMENT YELLOW 139) in the toner is 95/5 to 50/50. | 12-15-2011 |
| 20110311910 | TONER - To provide a toner which can achieve both low-temperature fixing performance and dot reproducibility and further can obtain images on which any density non-uniformity has been kept from coming about, the toner has toner particles, each of the toner particles has a toner base particle containing a binder resin, a colorant and a release agent, and an inorganic fine powder; the toner having:
| 12-22-2011 |
| 20120122027 | TONER, PRODUCTION METHOD THEREOF, DEVELOPER AND IMAGE FORMING METHOD - To provide a toner, containing: a binder resin; a crystalline polyester resin; a colorant; and wax, wherein the toner has a fluidized powder characteristic value of 35% to 45%, and a BET specific surface area of 2.8 m | 05-17-2012 |
| 20120135344 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES AND METHOD FOR PRODUCING THE SAME - The present invention is to provide a toner for developing electrostatic images having a low minimum fixing temperature, and high hot offset resistance and high heat-resistant shelf stability, and a method for producing the toner. Also, the present invention is to provide a toner for developing electrostatic images, comprising a binder resin, a colorant, a release agent and a retention aid, wherein the retention aid is a copolymer of 70 to 98% by weight styrene and 2 to 30% by weight (meth)alkyl acrylate, and the copolymer has a glass transition temperature of 5 to 60° C. | 05-31-2012 |
| 20120156607 | TONER COMPOSITIONS AND PROCESSES - 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. In embodiments, the bio-based amorphous polyester resin is modified with a multi-functional bio-based acid, thereby providing acid-functionalized polyesters, which can be readily emulsified in emulsion aggregation processes for toner fabrication. | 06-21-2012 |
| 20120171604 | Coloured Aqueous Polymer Dispersions, And Production And Use Of Same - The invention relates to a coloured polymer dispersion containing, as main ingredients: (a) a coloured polymer produced by polymerisation of monomer A with monomer B, monomer A being a pigment B which is coated with a polymerisable wax D wherein the polymerisable function is an ethylenically unsaturated group, monomer B being a ethylenically unsaturated compound; (b) at least one non-ionic surface-active additive E based on polyethers and/or polyglycerines; (c) at least one anionic surface-active additive F based on sulfonates, sulfates, phosphonates, phosphates or carboxylates; and (d) water. | 07-05-2012 |
| 20120183896 | Rosin-Based Resin and Toner Containing Same - Disclosed is a polyester resin comprising the polycondensation product of (a) at least one diacid, acid ester, or diester; and (b) at least one diol; wherein either (i) at least one diacid, acid ester, or diester comprises a rosin diacid, rosin acid ester, or rosin diester; or (ii) at least one diol comprises a rosin diol. Also disclosed is a toner composition comprising particles which comprise the disclosed polyester resin and an optional colorant. | 07-19-2012 |
| 20120208118 | RESIN COMPOSITIONS AND PROCESSES - Environmentally friendly resin particles are provided which include a monomer having a color, which is able to impart color to the resulting resin. The resulting resin may be used to form various articles, including toner. A toner of the present disclosure may thus include the bio-based polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these resins are also provided. | 08-16-2012 |
| 20120214096 | TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, METHOD OF PREPARING THE SAME, DEVICE FOR SUPPLYING THE SAME, AND APPARATUS AND METHOD FOR FORMING IMAGE USING THE SAME - A toner to develop an electrostatic charge image, a method of preparing the toner, a toner supply device employing the toner, an apparatus to form an image employing the toner, and a method of forming an image using the toner are provided. The toner includes a binder resin including a first type of binder resin having a first weight-average molecular weight and a second type of binder resin having a second weight-average molecular weight different than the first weight-average molecular weight, a colorant, and a releasing agent. | 08-23-2012 |
| 20120231386 | TONER PARTICLES COMPRISING COLORANT-POLYESTERS - A toner composition including a colorant-polyester polymer having at least one colorant and at least one polyester resin, an optional non-colorant polyester polymer, an optional additional colorant, an optional wax, and an optional additive, where the colorant is covalently linked to some or all of the polyester resin and the polyester resin is obtained by polymerizing a lactone using an enzyme catalyst. Methods for preparing a toner composition including an emulsion aggregation process. | 09-13-2012 |
| 20120231387 | TONER, TWO-COMPONENT DEVELOPER, AND IMAGE FORMING METHOD - A toner including a mother particle and an external additive is provided. The mother particle includes a core including a crystalline polyester, an amorphous polyester, a colorant, and a release agent; and a shell including resin particles. A deformation amount H | 09-13-2012 |
| 20120244466 | Toner wash comprising ionic liquid - A washing process using one or more ionic liquids (ILs) as a washing aid agent for toners, including toners produced using such ILs, such as, low melt toners, is provided. ILs are environmentally sound, green solvents that act to swell toner particle surfaces so that surface absorbed and adsorbed pollutants, such as, surfactants and other manufacturing reactants, can be effectively removed. The resulting toners have good charging, charge maintenance and RH sensitivity. | 09-27-2012 |
| 20120288791 | TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - In accordance with some embodiments, a toner including a first binder resin, a release agent, a release agent dispersing resin, and a colorant is provided. The first binder resin includes an amorphous polyester resin (a) having a polyhydroxycarboxylic acid skeleton in its main chain. The polyhydroxycarboxylic acid skeleton comprises optically-active monomers having an optical purity X of 80% by mole or less. The optical purity X is represented by the following formula: | 11-15-2012 |
| 20120288792 | DEVELOPER - There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %. | 11-15-2012 |
| 20120295190 | TONER - A toner is provided which has toner particles containing an aromatic compound represented by the following formula (1), and a colorant: | 11-22-2012 |
| 20120295191 | TONER - A toner is provided which has toner particles containing a charging component and containing an aromatic compound represented by the following formula (1): | 11-22-2012 |
| 20120315574 | TONER - A toner is provided that exhibits a high long-term image stability even during high-speed printing and that also exhibits an excellent environmental stability. The toner comprises a binder resin, a colorant, and a nonionic surfactant, wherein the nonionic surfactant has an oxyethylene group (EO) and an oxypropylene group (PO) and has a ratio of the number of moles of the oxypropylene group to the number of moles of the oxyethylene group (PO/EO) of at least 0.01 and not more than 5.00; and when A (μg/g) is defined as a nonionic surfactant content on the surface of the toner that can be extracted by methanol from 1 g of the toner and B (m | 12-13-2012 |
| 20120315575 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES - The present invention is to provide a toner for developing electrostatic images having excellent fixability, peelability, shelf stability (blocking resistance), printing durability, printing durability after being left at high temperature and thin line reproducibility. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin, a colorant and a wax, wherein the wax contains a natural sunflower wax, and wherein the natural sunflower wax has an acid value of 10 mg KOH/g or less, and a content of the natural sunflower wax is in the range from 1 to 10 parts by weight with respect to 100 parts by weight of the binder resin. | 12-13-2012 |
| 20130164669 | TONER, METHOD FOR PRODUCING THE TONER, AND IMAGE FORMING METHOD - A toner including a binder resin containing an ester bond, and a releasing agent, wherein the releasing agent includes first C30-C50 alkyl monoester compound and second C30-C50 alkyl monoester compound, wherein the number of carbon atoms of the first C30-C50 alkyl monoester compound is different from that of the second C30-C50 alkyl monoester compound, wherein the amount of the first C30-C50 alkyl monoester compound is largest and the amount of the second C30-C50 alkyl monoester compound is second largest or same as the amount of the first C3OC50 alkyl monoester compound, wherein the amount of the first C30-C50 alkyl monoester compound is 30% by mass or more but less than 50% by mass to the releasing agent, and wherein the amount of the second C30-C50 alkyl monoester compound is 10% by mass or more but less than 50% by mass to the releasing agent. | 06-27-2013 |
| 20130171552 | TONER - The present invention provides a toner showing an excellent fixing property even in high-speed image formation and inhibiting contamination of the inside of an apparatus and thereby being capable of stably forming high-quality images not having unevenness of gloss over a long period of time. In the toner including toner particles containing a binder resin, an ester wax, and a coloring agent, the ester wax is prescribed by, in GC/MS analysis of components volatilized by heating the wax at 200° C. for 10 minutes, a relationship in the components having carbon atoms in specific ranges. | 07-04-2013 |
| 20130189612 | TWO-COMPONENT DEVELOPER - The present invention relates to a two-component developer which comprises a toner, and a carrier having a surface of a core material particle coated with a resin having a unit of general formula (1). The present invention provides a two-component developer which has enhanced environmental stability of carrier charging performance. | 07-25-2013 |
| 20130209930 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - Disclosed is a toner for electrostatic image development, having excellent low-temperature fixability and also having hot offset resistance and post-fixing separability. | 08-15-2013 |
| 20130224642 | TONER TO DEVELOP ELECTROSTATIC CHARGE IMAGE, DEVICE TO SUPPLY THE SAME, AND APPARATUS AND METHOD OF FORMING IMAGE USING THE SAME - A toner to develop an electrostatic charge image, a toner supply device employing the toner, an apparatus to form an image employing the toner, and a method of forming an image using the toner are provided. The toner includes at least a binder resin, a colorant, and a releasing agent. By using the binder resin including a combination of a reduced molar weight binder resin, an increased molar weight binder resin, and the releasing agent having an effecdtive compatibility with the binder resin together, the toner has accurately-controlled dynamic viscoelastic properties represented by a loss tangent. The toner to develop an electrostatic charge image according to an embodiment has development stability, development lifetime, fixability, charging stability, gloss, an anti-offset property, and heat storage ability at predetermined levels or higher. | 08-29-2013 |
| 20130260304 | Toner and Method for Producing the Same - There is provided a toner, including toner mother particles which contain a binder resin, a colorant, and a wax, wherein a difference between a density of the wax in a solid state and a density of the wax in a liquid state is not less than 0.11 g/cm | 10-03-2013 |
| 20130273467 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - A toner for electrostatic image development containing a resin binder and a releasing agent, wherein the resin binder contains a polyester A having a furan ring, and wherein the releasing agent contains an ester wax, and a method for producing the toner. The toner for electrostatic image development of the present invention can be suitably used in, for example, the development or the like of latent image formed in electrophotography, an electrostatic recording method, an electrostatic printing method, or the like. | 10-17-2013 |
| 20130280649 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - There is provided a toner for electrostatic-image development that can obtain heat-resistant storability, fixed image strength and long-term stability of charging while having excellent low-temperature fixing property. The toner is formed with toner particles containing a binder resin and a crystalline ester compound, and the binder resin contains a styrene-acrylic resin including a structural unit derived from an acrylic ester monomer. | 10-24-2013 |
| 20130337377 | Toners with Improved Dielectric Loss - The disclosure describes a pigment treated with a rosin and a toner particle containing that rosin-treated pigment particle. The toner has a lower level of dielectric loss. | 12-19-2013 |
| 20130344429 | TONER FOR MAGNETIC SINGLE-COMPONENT DEVELOPMENT - A toner for magnetic single-component development, which contains at least a binder resin which is a polyester resin, magnetic powder, and a charge control resin, wherein the ratio (%) of the area of the charge control resin present on the surface of the toner particles with respect to the area of the toner particles on an electron microscope image is made to be in a predetermined range corresponding to the particle diameter of the toner particles. | 12-26-2013 |
| 20140141366 | TONER AND METHOD FOR MANUFACTURING THE SAME - In a toner including toner particles obtained by performing suspension polymerization using a monomer composition containing a polymerizable monomer and a polar resin and in a method for manufacturing the above toner, the polar resin satisfies the following conditions (1) to (4). (1) The polar resin is a styrene-based resin. (2) A main peak molecular weight Mp is 5,000 to 100,000. (3) When the acid value of a low molecular weight component is represented by A and the acid value of a high molecular weight component is represented by B, 0.80≦A/B≦1.20 is satisfied. (4) The acid value is 5.0 to 40.0 mgKOH/g. | 05-22-2014 |
| 20140147782 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER - For electrostatic charge image developing toner including toner base particles including a binder resin and a releasing agent, and an external additive attached to the toner base particles, an ester wax including a carboxylic acid component and an alcohol component each having a specific composition is used as the releasing agent, and an endothermic start temperature of the releasing agent is a predetermined temperature or more. | 05-29-2014 |
| 20140154621 | TONER ADDITIVES - The disclosure relates generally to toner additives, and in particular, toner additives that provide desired higher toner charge and low relative humidity (RH) sensitivity. The toner additives comprise titania nanotubes or titania nanosheets in combination with or in place of the commonly used anatase or rutile crystalline titania. | 06-05-2014 |
| 20140199623 | Tuning Toner Gloss with Bio-based Stabilizers - 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. | 07-17-2014 |
| 20140205944 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES - 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: | 07-24-2014 |
| 20140272696 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING METHOD - Toner contains a mother toner particle that contains a crystalline resin; and wax; and a coloring agent, wherein the area of endothermic peak derived from the crystalline resin during a first temperature rising as measured by differential scanning calorimetry is at least 20 J/g, wherein the ratio of the area of endothermic peak derived from the wax during a second time temperature rising as measured by differential scanning calorimetry (DSC) to the area of endothermic peak derived from the wax during a first time temperature rising as measured by differential scanning calorimetry is at least 0.50, wherein the ratio of the area of endothermic peak derived from the wax during a first time temperature rising as measured by differential scanning calorimetry to the area of endothermic peak derived from the crystalline resin during a first temperature rising as measured by differential scanning calorimetry is at least 0.10. | 09-18-2014 |
| 20140342280 | Alizarin-Based Polymer Colorants - A polymer colorant including polymer monomer units, and at least one alizarin unit which is incorporated into the polymer and which provides color to the polymer colorant and a process for preparing the polymer colorant. An article or composition containing the polymer colorant. A toner including the polymer colorant, and optionally, one or more ingredients selected from the group consisting of crystalline polyester resins, amorphous polyester resins, colorants, waxes, coagulants, mordants, and mixtures and combinations thereof. A polymer latex including an aqueous dispersion of polymer colorant, wherein the polymer colorant comprises polymer monomer units and at least one alizarin unit which is incorporated into the polymer and which provides color to the polymer colorant; and optionally, a mordant. | 11-20-2014 |
| 20140370430 | LOW COST, LOW MELT EMULSION AGGREGATION HIGH GLOSS TONERS WITH LOW MELT WAXES - A toner particle includes a core containing a styrene-based resin; a low melting point wax; optionally an additive package; and optionally a colorant, wherein the low melting point wax has a melting point of less than about 80° C. A method of making a toner particle includes forming a slimy by mixing together an emulsion containing a resin, a low melting point wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additives; and heating the slurry to form aggregated particles in the slurry, wherein the aggregated particles form a core of the toner particles; and the low melting point wax has a melting point of less than about 80° C. | 12-18-2014 |
| 20150037722 | TONER - The present invention provides a toner that exhibits an excellent low-temperature fixability and an excellent ejected paper adhesiveness during high-speed printing, without affecting the long-term storage stability, in which the toner has a toner particle that contains a resin component, wherein the toner has, in a DSC curve measured with a differential scanning calorimeter, a glass transition temperature of at least 50° C. and not more than 65° C. and a cold crystallization peak during cooling of at least 40° C. and not more than 70° C., and has an endothermic peak in a DSC curve measured with a differential scanning calorimeter for the resin component of at least 70° C. and not more than 95° C. | 02-05-2015 |
| 20150064616 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER - An electrostatic latent image developing toner includes a toner base particle which contains at least a binder resin, and has a domain-matrix structure, in which a matrix contains a styrene-acrylic resin, a domain contains an amorphous resin which is formed by combining a vinyl-based polymerized segment and a polyester-based polymerized segment, and the domain containing the amorphous resin and having a diameter of 100 nm or larger has a number-average domain diameter which falls in the range from 150 to 1000 nm. | 03-05-2015 |
| 20150064617 | TONER - A toner has toner particles including a binder resin, a colorant, an ester wax and a hydrocarbon wax; and inorganic fine particles. The ester wax includes an ester compound having a structure represented by formula (1): R | 03-05-2015 |
| 20150079513 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, TWO-COMPONENT DEVELOPER FOR REPLENISHING, IMAGE-FORMATION METHOD USING SAME, AND IMAGE-FORMATION DEVICE - A toner for electrostatic image development is configured such that: a binder resin is polyester resin; a release agent dispersing aid is styrene acrylic copolymer resin having at least one of an α-methylstyrene structure and a styrene structure, and is contained in an amount of 5.5 parts by weight to 12 parts by weight with respect to 100 parts by weight of the polyester resin; and the styrene acrylic copolymer resin has an acid value of 3 KOHmg/g to 9 KOHmg/g, and the toner for electrostatic image development has an acid value of 14 KOHmg/g to 19 KOHmg/g. | 03-19-2015 |
| 20150099221 | TONER - For at least 80% of toner particles in a toner, along at least 80% of circumferential length of a toner particle cross-section, a shell layer has a thickness of at least 5 nm and satisfies a condition that a ratio of an intensity INc relative to an intensity INs is no greater than 0.2. For at least 80% of the toner particles in the toner, along at least 80% of the circumferential length of the toner particle cross-section, the shell layer has a thickness of at least 5 nm and satisfies a condition that a ratio of an intensity ISc relative to an intensity ISs is no greater than 0.2. | 04-09-2015 |
| 20150104743 | Preparing Amorphous Polyester Resin Emulsions - A process for making a latex emulsion including contacting at least one amorphous polyester resin with at least two organic solvents to form a resin mixture, adding a neutralizing agent, and deionized water to the resin mixture, removing the solvent from the formed latex, and separating the solvent from water. Further, the process is carried out above the resin Tg for making the latex, which drives the latex particle size under 100 nm, where toners made from the latex show improved charging performance. | 04-16-2015 |
| 20150111141 | Bio-Based Toner Resin with Increased Fusing Performance - The disclosure describes a sustainable toner with favorable hot offset and gloss mottle comprising a bioresin, where the toner surface has a carbon to oxygen ratio higher than found in existing bio-based toners comprising a bioresin. | 04-23-2015 |
| 20150132694 | SUPER LOW MELT TONER HAVING CRYSTALLINE DIESTERS WITH AN AROMATIC CORE - A toner includes a polymeric resin, optionally a colorant, and a small molecule crystalline diester having an aromatic core and 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 aromatic diester may be 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 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. | 05-14-2015 |
| 20150132695 | SUPER LOW MELT TONER HAVING CRYSTALLINE AROMATIC MONOESTERS - A toner includes a polymeric resin, a colorant, and a small molecule crystalline aromatic monoester 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 aromatic monoester 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 aromatic monoester as determined by differential scanning calorimetry, the enthalpy of fusion for the crystalline aromatic monoester in the mixture being measured to be less than 10% of the enthalpy of fusion of the crystalline aromatic monoester 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 aromatic monoesters may include 2-Naphthyl benzoate. | 05-14-2015 |
| 20150370188 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE - A toner for developing an electrostatic image includes a toner particle. The toner particle contains a binder resin and a release agent. The binder resin contains an amorphous resin and a crystalline polyester resin. The toner satisfies the following formulae (1) and (2). In the formulae (1) and (2), Tmc (° C.) represents a melting peak temperature derived from the crystalline polyester resin and Tmw (° C.) represents a melting peak temperature derived from the release agent in a heating process in differential scanning calorimetry of the toner. | 12-24-2015 |
| 20160017090 | Alizarin-Based Polymer Colorants - A polymer colorant including polymer monomer units, and at least one alizarin unit which is incorporated into the polymer and which provides color to the polymer colorant and a process for preparing the polymer colorant. An article or composition containing the polymer colorant. A toner including the polymer colorant, and optionally, one or more ingredients selected from the group consisting of crystalline polyester resins, amorphous polyester resins, colorants, waxes, coagulants, mordants, and mixtures and combinations thereof. A polymer latex including an aqueous dispersion of polymer colorant, wherein the polymer colorant comprises polymer monomer units and at least one alizarin unit which is incorporated into the polymer and which provides color to the polymer colorant; and optionally, a mordant. | 01-21-2016 |
| 20160048089 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES - The present invention is to provide a toner which is able to inhibit the occurrence of fog, which is excellent in intermittent endurance, and which is excellent in followability during toner transfer and is thus excellent in top edge part uniformity in solid pattern printing. Disclosed is a toner for developing electrostatic images, comprising colored resin particles containing a binder resin, a colorant and a release agent, and an external additive, wherein static and kinetic friction coefficients obtained by measuring, using a 3-mm-diameter stainless-steel ball as a contactor, a 55-mm-diameter disk-shaped pellet obtained by pressing 4 g of the toner at 9 MPa for one minute, are 0.220 to 0.320 and 0.190 to 0.270, respectively, and a difference calculated by subtracting the kinetic friction coefficient from the static friction coefficient is 0.010 to 0.090. | 02-18-2016 |
| 20160048090 | TONER FOR DEVELOPING ELECTROSTATIC IMAGES - There is provided a toner for developing electrostatic images, including an external additive and colored resin particles containing a binder resin, a colorant and softening agents. The colored resin particles contain a monoester compound A represented by formula (1) and a monoester compound B represented by formula (2) as softening agents. A content of the monoester compound A is in the range from 95 to 99% by mass, a content of the monoester compound B is in the range from 1 to 5% by mass, and a content of the softening agents is in the range from 10 to 30 parts by mass, with respect to 100 parts by mass of the binder resin. Formula (1) is R | 02-18-2016 |
| 20160077455 | TONER, DEVELOPER, AND METHOD OF MANUFACTURING THE TONER - A toner is provided. The toner includes a binder resin and a release agent. The binder resin includes a polyester resin. The toner has a single exothermic peak measured by a differential scanning calorimetry (DSC) descending in a temperature range of from 150° C. to 0° C., wherein the exothermic peak is in a temperature range of from 40° C. to 60° C. and has a half bandwidth of at most 10° C. The release agent disperse to network form in the cross-sectional images of the toner observed with a transmission electron microscope (TEM). | 03-17-2016 |
