Patent application number | Description | Published |
20090155709 | TONER, VESSEL WITH THE TONER, DEVELOPER, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE AND IMAGE FORMING METHOD - Toner and a developer which are excellent in cleaning property and fixing property at low temperature, and capable of forming images with high quality are provided. A toner prepared by dispersing and/or emulsifying an oil phase or a monomer phase comprising a toner composition and/or a toner composition precursor in a water-based medium to granulate, wherein the toner has an average circularity of 0.925 to 0.970, and the toner composition and/or the toner composition precursor has a layered inorganic material in which at least a part of interlayer ions in the layered inorganic material has been exchanged with organic ions. | 06-18-2009 |
20110177440 | METHOD OF MANUFACTURING TONER AND TONER MANUFACTURED BY THE METHOD - A method of manufacturing toner including: preparing a first liquid by dissolving or dispersing toner components including a colorant, a release agent, and one or both of a binder resin and a precursor thereof in an organic solvent; preparing a second liquid having a viscosity of from 50 to 800 mPa·sec when measured with a Brookfield viscometer at a revolution of 60 rpm and a temperature of 25° C., by emulsifying the first liquid in an aqueous medium; and evaporating the organic solvent from the second liquid by flowing down the second liquid as a liquid film from a supply part along an inner wall surface of a pipe depressurized to 70 kPa or less in substantially a vertical direction, and heating the liquid film at not higher than a glass transition temperature of the binder resin by contact with the inner wall surface of the pipe in a heating part. A heat insulating part is provided between the supply part and the heating part. | 07-21-2011 |
20110200929 | ELECTROSTATIC IMAGE DEVELOPING TONER AND TWO-COMPONENT DEVELOPER - The present invention provides an electrostatic image developing toner capable of improving the dispersibility of wax in the toner and superior in offset resistance and in storageability (heat-resistant storageability) at high temperatures, and a two-component developer which uses this electrostatic image developing toner. The electrostatic image developing toner includes: a binder resin, a colorant, and a release agent, wherein the binder resin contains a polyester resin, and a block copolymer which has a polyolefin backbone unit. | 08-18-2011 |
20110236818 | METHOD FOR PREPARING PARTICULATE RELEASE AGENT, TONER USING THE PARTICULATE RELEASE AGENT, AND METHOD FOR PREPARING THE TONER - A toner for developing an electrostatic image is provided. The toner includes at least a binder resin; a colorant; and a particulate release agent. The particulate release agent is prepared by heating the release agent to a temperature not lower than a melting point of the release agent to melt the release agent, dissolving the melted release agent in a supercritical fluid or a sub-critical fluid, and feeding the solution into a liquid so that the solution is depressurized and the particulate release agent is formed in the liquid. | 09-29-2011 |
20120231383 | RESIN FOR TONER, TONER USING THE RESIN, AND DEVELOPMENT AGENT USING THE TONER - A resin for toner containing a polyhydroxy carbonate skeleton and a rigid skeleton. | 09-13-2012 |
20120282000 | TONER FOR ELECTROPHOTOGRAPHY, DEVELOPER, AND IMAGE FORMING APPARATUS - To provide a toner for electrophotography, which contains a binder resin, a colorant, and an organic-modified layered inorganic mineral, wherein the binder resin contains a crystalline resin in an amount of 50% by mass or greater, and wherein the organic-modified layered inorganic mineral is an organic-modified layered inorganic mineral in which at least part of ions present between layers of a layered inorganic mineral are modified with organic ions. | 11-08-2012 |
20120295188 | RESIN FOR USE IN TONER, TONER USING THE RESIN, DEVELOPER USING THE TONER, IMAGE FORMING APPARATUS AND METHOD USING THE TONER, AND METHOD OF MANUFACTURING RESIN - A resin for use in toner is provided. The resin comprises an oligomer segment and a soft segment. The oligomer segment comprises a polyhydroxycarboxylic skeleton and an aromatic diol skeleton. | 11-22-2012 |
20130065172 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner including a colorant and a first binder resin is provided. The first binder resin has first and second glass transition points at a temperature Tg1 of −20 to 20° C. and a temperature Tg2 of 35 to 65° C., respectively, measured by a differential scanning calorimeter at a heating rate of 5° C./min. A ratio h1/h2 of a baseline displacement h1 observed in the first glass transition point to a baseline displacement h2 observed in the second glass transition point is less than 1.0. The first binder resin has a structure in which a first phase is dispersed in a second phase. The first and second phases consist of portions having larger and smaller phase difference values, respectively, than an intermediate value between maximum and minimum phase difference values in a binarized phase image obtained by an atomic force microscope with a tapping mode method. | 03-14-2013 |
20130078563 | TONER AND DEVELOPMENT AGENT, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE USING THE SAME - A toner includes a coloring agent, a binder resin comprising a crystalline resin having a urethane skeleton and/or urea skeleton, and a releasing agent (a microcrystalline wax). A development agent, a process cartridge, and an image forming apparatus employ the toner to form images on recording media electrophotographically. | 03-28-2013 |
20130095422 | TONER - A toner, including a crystalline resin as a binder resin, wherein the toner comprises a THF-soluble component in a weight-average molecular weight not less than 20,000, and has a 50% wettability not less than 20% by volume when subjected to a methanol wettability test. | 04-18-2013 |
20130108950 | TONER, AND DEVELOPER AND IMAGE FORMING APPARATUS USING THE TONER | 05-02-2013 |
20130115550 | TONER AND IMAGE FORMING APPARATUS - A toner including a core particle and projections at a surface of the core particle is provided. The core particle includes a binder resin and a colorant. The binder resin includes a crystalline resin as a major component. Each of the projections consists of a fine resin particle. An average length of long sides of the projections is not less than 0.15 μm and less than 0.5 μm. A standard deviation of lengths of the long sides of the projections is 0.2 or less. A surface coverage of the toner with the projections is within a range of 30 to 90%. | 05-09-2013 |
20130149642 | TONER AND DEVELOPER - To provide a toner, which contains a first binder resin, and a second binder resin, wherein the first binder resin is a block polymer containing at least a polyester skeleton A having, in a repeating structure thereof, a constitutional unit formed by dehydration condensation of hydroxycarboxylic acid, and a skeleton B that does not have, in a repeating structure thereof, a constitutional unit formed by dehydration condensation of hydroxycarboxylic acid, and the first binder resin has glass transition temperature Tg1 and Tg 2 as measured by differential scanning calorimetry at a heating rate of 5° C./min, wherein the Tg1 is −20° C. to 20° C., and the Tg2 is 35° C. to 65° C., and wherein the second binder resin is a crystalline resin. | 06-13-2013 |
20130157183 | DEVELOPER FOR ELECTROPHOTOGRAPHY, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - A developer, including a toner including a binder resin comprising a crystalline resin; and a colorant, and a resin carrier comprising a resin; a magnetic particulate material having a magnetic anisotropy, dispersed in the resin, and having a saturated magnetization of from 16 to 30 emu/g, a coercive force of from 15 to 40 kA/m and an average particle diameter not less than 15 μm and less than 100 μm. | 06-20-2013 |
20130157184 | TONER AND DEVELOPER - To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st−Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof. | 06-20-2013 |
20130157185 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING APPARATUS USING THE SAME - A toner includes a binder resin, a coloring agent, and a releasing agent containing two or more kinds of alkyl monoester compounds having a different number of carbon atoms in a range of from 30 to 50 carbon atoms. The toner has a crystallinity of 10% or more as measured by x-ray diffraction and/or the binder resin is a crystalline resin in an amount of 50% by weight or more of the binder resin. The two or more kinds of alkyl monoester compounds include a component A accounting for the largest amount ranging from 30% by weight to less than 50% by weight of the releasing agent and a component B accounting for the second largest amount ranging from 10% by weight to less than 50% by weight of the releasing agent. | 06-20-2013 |
20130171550 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - To provide a toner including at least a binder resin and a colorant,
| 07-04-2013 |
20130202996 | TONER, DEVELOPER INCLUDING THE TONER, IMAGE FORMING APPARATUS USING THE TONER, AND BLOCK COPOLYMER - The toner includes a pigment; and a block copolymer having a polyester block A including a residual group of a hydroxycarboxylic acid, and a polyester block B including an anionic group. When cross-section of the block copolymer is observed by a tapping mode atomic force microscope to obtain a phase image of the cross-section, the polyester block B, which has relatively large phase delay, is dispersed as domains having an average size of from 20 nm to 100 nm in a domain of the polyester block A, which has relatively small phase delay. The block copolymer has a first glass transition temperature of from −20° C. to 20° C., and a second glass transition temperature of from 35° C. to 65° C. when the first and second glass transition temperatures are determined from a thermogram obtained by subjecting the block copolymer to differential scanning calorimetry (DSC) at a temperature rising speed of 5° C./min. | 08-08-2013 |
20130236826 | TONER FOR ELECTROPHOTOGRAPHY, DEVELOPER AND METHOD OF PREPARING THE TONER - A toner for electrophotography, which is prepared by a method including dissolving or dispersing a toner composition including at least a binder resin, or binder resin and a binder resin precursor as a resin component; and a colorant in an organic solvent to form an oil phase; emulsifying or dispersing the oil phase in an aqueous medium to form an emulsion dispersion comprising emulsified particles; converging the emulsified particles to granulate mother toner particles, including controlling a temperature of the emulsion dispersion to control a circularity of the mother toner particles; and removing the organic solvent, wherein the resin component includes a crystalline resin in an amount not less than 50% by weight, and the mother toner particles have an average circularity of from 0.940 to 0.980. | 09-12-2013 |
20130244153 | DEVELOPMENT AGENT AND IMAGE FORMING APPARATUS EMPLOYING SAME - A development agent containing toner that contains a binder resin having a crystalline resin that has a urethane and/or urea bond in its main chain, a coloring agent, and an organically modified inorganic laminate compound in which organic ions are at least partially substituted for ions present between layers of the organically modified inorganic laminate compound, and toner carrier that contains a core material whose surface is coated with a coating layer having a condensed compound of a melamine resin and/or a guanamine resin and an acrylic resin having a hydroxyl group. | 09-19-2013 |
20130244154 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING APPARATUS - Toner containing a binder resin that contains at least one kind of resin having a crystalline polyester unit as its main component and a releasing agent containing a straight-chain mono ester having 48 or more carbon atoms accounting for 40% by weight or more of the releasing agent. | 09-19-2013 |
20130244167 | TONER AND DEVELOPER - A toner including a binder resin having a glass transition temperature (Tg) observed at least at one point from 25 to 65° C. in a differential scanning calorimeter at a rate of temperature increase of 5° C./min, wherein the toner has a structure in which a structure appearing as a high phase difference image is dispersed in a structure appearing as a low phase difference image in a two-dimensional phase difference image observed by tapping mode AFM, and an X-ray diffraction chart in which a peak originated from an crystalline resin is observed in a range of a diffraction angle 2θ of from 20 to 25°, and wherein a ratio (I1/I2) of an intensity of the peak originated from an crystalline resin to an intensity (I2) of a halo originated from an amorphous composition is from 0.2 to 1. | 09-19-2013 |
20130252158 | ELECTROPHOTOGRAPHIC TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - An electrophotographic toner, including: a binder resin; a colorant; and an organically-modified layered inorganic mineral, wherein the binder resin contains 50% by mass or more of a crystalline resin relative to the binder resin, and the crystalline resin contains a resin having a sulfonic acid group, and wherein an amount of the sulfonic acid group is 0.1% by mass to 2.0% by mass relative to the resin having the sulfonic acid group. | 09-26-2013 |
20130260298 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS - A toner including: a binder resin; and a colorant, wherein the toner is obtained by dispersing or emulsifying an oil phase in an aqueous solvent containing an organic sulfonic acid salt and an inorganic salt, the oil phase including the binder resin and the colorant dissolved or dispersed in an organic solvent, wherein the binder resin comprises a crystalline resin in an amount of 50% by mass or more relative to the binder resin, and wherein the toner has an average circularity of 0.980 or less. | 10-03-2013 |
20140051019 | TONER, DEVELOPMENT AGENT, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - Toner contains a binder resin containing a crystalline resin having a urethane and/or urea bonding; and a colorant, wherein in a diffraction spectrum of the toner as measured by an X-ray diffraction instrument, a ratio {C/(C+A)} of an integral intensity C of the spectrum derived from the crystalline structure to an integral intensity A of the spectrum derived from the non-crystalline structure is 0.12 or greater, wherein the toner satisfies the following relation 1: T1−T2≦30° C. (Relation 1), where T1 represents the maximum endothermic peak in the first temperature rising from 0° C. to 100° C. at the temperature rising rate of 10° C./min and T2 represents the maximum exothermic peak in the first temperature falling from 100° C. to 0° C. at the temperature falling rate of 10° C./min as T1 and T2 are measured by diffraction scanning calorimetry (DSC). | 02-20-2014 |
20140065534 | TONER, DEVELOPER AND IMAGE FORMING APPARATUS - A toner, including: a crystalline resin containing a urethane bond, a urea bond, or both thereof; and a compound represented by the following General Formula (1), wherein an amount of the compound represented by the General Formula (1) is 0.01% by mass to 0.25% by mass: | 03-06-2014 |
20140080051 | TONER AND METHOD FOR PRODUCING TONER - To provide a toner (X), which contains toner particles, each toner particle contains: a core phase (Q) containing a crystalline resin (A); and a shell phase (S) provided on a surface of the core phase (Q), where the shell phase (S) contains a crystalline polyurethane resin (B), wherein maximum peak temperature (Ta) of heat of melting of the crystalline resin (A) is 40° C. to 70° C., and maximum peak temperature (Tu) of heat of melting of the crystalline polyurethane resin (B) is 50° C. to 90° C. | 03-20-2014 |
20140272698 | TONER - Toner contains a binder resin containing two or more kinds of crystalline resins; and a coloring agent, wherein the two or more kinds of crystalline resins have at least two endothermic peak temperatures in a set of endothermic peak temperatures of the two or more kinds of crystalline resins as measured by differential scanning calorimetry (DSC). | 09-18-2014 |
20140301757 | TONER, DEVELOPER USING THE TONER, IMAGE FORMING APPARATUS - A toner including at least a crystalline resin as a binder resin, wherein a tetrahydrofuran soluble content of the toner includes 5.0% or more as a peak area of a component having a molecular weight of 100,000 or greater in a molecular weight distribution measured by gel permeation chromatography, and the tetrahydrofuran soluble content of the toner has a weight-average molecular weight of 20,000 to 60,000. | 10-09-2014 |
20140342284 | ELECTROPHOTOGRAPHIC TONER, DEVELOPER CONTAINING THE TONER, AND IMAGE FORMING APPARATUS - An electrophotographic toner including: a binder resin, wherein the binder resin has one glass transition temperature Tg and the glass transition temperature Tg of the binder resin is within 25° C. to 65° C. as measured in second heating with a differential scanning calorimeter at a heating rate of 5° C./min, and wherein a phase image of the binder resin obtained with an atomic force microscope (AFM) of tapping mode contains first phase difference regions and a second phase difference region such that the first phase difference regions are dispersed in the second phase difference region, where the first phase difference regions correspond to greater phase difference regions and the second phase difference region corresponds to a smaller phase difference region when an intermediate value between a maximum value and a minimum value of the phase differences is used as a threshold. | 11-20-2014 |