| Patent application number | Description | Published |
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| 20080213682 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, METHOD FOR PRODUCING THE TONER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE TONER - Provided is a toner for developing electrostatic image, comprising particles of oil phase containing at least a toner composition and/or toner composition precursor in an aqueous medium, wherein the toner composition and/or toner composition precursor comprises an organic-modified layered inorganic mineral prepared by modifying at least partially an ion of a layered inorganic mineral into an organic ion, and the organic ion-modification ratio X satisfies the relation of 100| 09-04-2008 | |
| 20080227018 | TONER FOR DEVELOPING A LATENT ELECTROSTATIC IMAGE, AND IMAGE FORMING METHOD AND APPARATUS USING THE TONER - To provide a toner containing toner particles, wherein each toner particle contains at least: a releasing agent having an average dispersed particle diameter of 0.1 to 0.5 μm; and a modified layered inorganic mineral in which at least a part of ions present in between layers of a layered inorganic mineral is replaced with an organic ion, wherein the toner has a ratio A/B of 0.2 to 2.0 where A denotes the average dispersed particle diameter of the releasing agent and B denotes an average dispersed particle diameter of the modified layered inorganic mineral, or a proportion of the dispersed particles of the releasing agent having a diameter of 1 μm or more in the dispersed particles of the releasing agent having a diameter of 0.5 μm or more is 20% by number or less. | 09-18-2008 |
| 20080280218 | TONER, AS WELL AS IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD USING THE SAME - To provide a toner produced by emulsifying or dispersing in an aqueous medium particles containing at least polyester resin particles and by aggregating the polyester resin particles, wherein the polyester resin particles contain a polyester resin, the polyester resin is produced by condensation polymerization of an alcohol component containing 65 mol % or more 1,2-propanediol in a dihydroxy alcohol component and a carboxylic acid component containing purified rosin, and the softening point of the polyester resin is 80° C. or more and less than 120° C., and wherein the toner comprises a colorant and a releasing agent. | 11-13-2008 |
| 20080280219 | TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE USING THE TONER - The present invention provides a toner containing at least a binder resin, a releasing agent, and a colorant, wherein the binder resin contains at least a polyester resin (A) having a softening point Tm(A) of 120° C. to 160° C., a polyester resin (B) having a softening point Tm(B) of 80° C. or more and less than 120° C. and a composite resin (C) containing a condensation polymerization monomer and an addition polymerization monomer, at least any one of the polyester resins (A) and (B) is a polyester resin prepared by condensation-polymerizing an alcohol component substantially composed of only aliphatic alcohol with a carboxylic acid component, and 65% or more of the alcohol component is 1,2-propanediol. | 11-13-2008 |
| 20080292361 | TONER USED FOR IMAGE FORMING APPARATUS - The present invention provides an image forming apparatus capable of stably producing high quality images with time, without causing missing a central part of a thin line, however, with keeping an appropriate flowability of a toner. The toner used in the image forming apparatus is a toner which contains a binder resin, a colorant, and a laminar inorganic mineral in which at least part of an ion in layers is modified with an organic ion, the toner is granulated in an aqueous system, the volume average particle diameter Dv of the toner is in the range of 3.0 μm| 11-27-2008 | |
| 20080311500 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE TONER - A toner including toner particles including a binder resin; a colorant, a release agent, and a modified layered inorganic material in which at least part of interlayer ions is modified with an organic ion, wherein the toner includes the release agent in an amount of from 3 to 6% by weight based on the total weight of the toner, and concentration of the modified layered inorganic material in a surface portion of the toner is greater than the average concentration thereof in the toner, and wherein the toner is subjected to FTIR-ATR, the ratio (P2850/P828) of the strength of the peak at 2850 cm | 12-18-2008 |
| 20090010687 | FIXING DEVICE, AND IMAGE FORMING APPARATUS USING THE FIXING DEVICE - An image forming apparatus including an image bearing member; a charger; a light irradiator; a developing device; a transfer device; an image bearing member's cleaner; and a fixing device, wherein the fixing device includes a fixing member configured to fix a toner image upon application of heat and pressure thereto; a pressing member configured to press the recording material toward the fixing member; and a cleaning member configured to clean a surface of the fixing member and/or the pressing member, wherein the cleaning member has an outermost layer including a reactive material which increases viscoelasticity of a binder resin of the toner by reacting with the binder resin. | 01-08-2009 |
| 20090061345 | TONER - A toner including a binder resin, a colorant, and a release agent is provided. The difference in absorbance ratio between the toner heated for 1 minute in an atmosphere of 100° C. and the toner stored in an atmosphere of 23° C. is from 0.1 to 0.2. The absorbance ratio is a ratio of an absorbance specific to the release agent (such as at 2850 cm | 03-05-2009 |
| 20090117480 | TONER AND DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD USING THE SAME - To provide a toner containing an ethyl acetate-soluble polyester component and an ethyl acetate-insoluble polyester component, wherein the toner is granulated in an aqueous medium, the ethyl acetate-insoluble polyester component is obtained by elongating and/or cross-linking a modified polyester resin during granulating and/or after granulating, the modified polyester resin is produced by condensation polymerization of an acid component and at least one type of diol compound selected from aliphatic diol and alicyclic diol in the presence of a catalyst, and the mass average molecular weight of the modified polyester resin is 10,000 to 100,000. | 05-07-2009 |
| 20090142094 | TONER, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner including a binder resin and a colorant which produces a torque of from 1.4 to 2.0 mNm, when a cone rotor having a vertical angle of 60° and grooves on a surface thereof intrudes into a bulk of the toner at an intrusion speed of 5 mm/min for a depth of 20 mm while rotating at a rotation speed of 1 rpm. The bulk of the toner is formed by consolidating 30 g of the toner in a cylindrical container having an internal diameter of 60 mm for 60 seconds with a consolidation load of 585 g. | 06-04-2009 |
| 20090142680 | FULL-COLOR IMAGE FORMING METHOD - A full-color image forming method, including:
| 06-04-2009 |
| 20090142682 | TONER, METHOD OF MANUFACTURING TONER AND IMAGE FORMATION METHOD - A toner including a binder resin, a coloring agent, a releasing agent and a modified laminar inorganic mineral, wherein the toner is granulated by dispersing the coloring agent, the releasing agent, the modified laminar inorganic mineral and at least one of the binder resin and a precursor thereof in an organic solvent to form an oil phase, dispersing the oil phase in an aqueous medium to obtain a dispersion emulsion and removing solvents therefrom, and the toner satisfies the following relationship (1): 0.2≦{1/Dv (μm)}×Sb (m | 06-04-2009 |
| 20090142690 | METHOD OF MANUFACTURING TONER - A method of manufacturing a toner including forming a wax liquid dispersion in which a wax is dispersed in an organic solvent (A1), mixing an organic layer including the wax liquid dispersion, a binder resin and an organic solvent (A) to form an oil phase and dispersing and emulsifying the oil phase in an aqueous medium to obtain an emulsified liquid dispersion, wherein the aspect ratio average of the wax in the wax liquid dispersion is from 0.3 to 0.7 and the toner includes toner particles satisfying the following relationship (1) in an amount of 20% by number or smaller based on all toner particles: 0.5| 06-04-2009 | |
| 20090214975 | TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGE AND METHOD OF PREPARING THE TONER, AND IMAGE FORMING METHOD USING THE TONER - A toner prepared by a method including dissolving or dispersing at least at least one member selected from the group consisting of binder resins and precursors thereof, a colorant, a release agent, and a layered inorganic mineral in which ions between its layers are at least partially modified with an organic ion in an organic solvent to prepare a solution or a dispersion which is an oil phase; and dispersing the oil phase in an aqueous medium to prepare an emulsified dispersion in which parent toner particles are granulated, wherein the aqueous medium includes a tertiary amine compound. | 08-27-2009 |
| 20090269692 | METHOD OF MANUFACTURING TONER - A method of manufacturing the toner comprising dispersing at least one of a binder resin or a precursor thereof, a coloring agent and a releasing agent in an organic solvent to obtain an oil phase,dispersing the oil phase in an aqueous medium with a shearing force to obtain a dispersion emulsion, wherein the dispersion emulsion process has plural stages and the shear speed A of the emulsification process of stage n is faster than the shear speed B of the emulsification process of stage n+1. | 10-29-2009 |
| 20090280421 | METHOD OF MANUFACTURING TONER AND TONER - A method of manufacturing a toner including dispersing a binder resin, a coloring agent and a releasing agent in an organic solvent to obtain an oil phase; dispersing the oil phase in an aqueous medium with a shearing force to obtain a dispersion emulsion; wherein the shearing force is made by a screen or vessel that is situated around a rotor, the screen spinning in a direction opposite to the direction that the rotor spins. Toner produced. Method of using the toner. | 11-12-2009 |
| 20100062352 | TONER, AND PRODUCTION METHOD OF THE SAME - The present invention provides a method for producing a toner, the method including: preparing a wax dispersion liquid by cooling a wax solution, in which a wax is heated and dissolved or dispersed in an organic solvent, in a container so that a standard deviation σ of a temperature distribution between a center portion of the container and an inner wall of the container is 0.5 or less and the cooling rate is 2.0° C./min or more, to precipitate wax particles in the wax solution; forming toner base precursor particles by adding an aqueous phase containing resin fine particles into an oil phase containing at least the wax dispersion liquid, a colorant and a binder resin and mixing the oil phase and the aqueous phase with each other; and preparing toner base particles by removing the solvent from the toner base precursor particles. | 03-11-2010 |
| 20100209838 | TONER AND DEVELOPMENT AGENT - A toner including a binder resin, a coloring agent, and a releasing agent, the toner formed by dispersing a toner liquid material which is prepared by dispersing the binder resin, the prepolymer, an elongation agent and/or a cross-linking agent for the prepolymer, the coloring agent, and the releasing agent in an organic solvent, dispersing the toner liquid material in an aqueous medium to obtain a liquid dispersion in at least one of cross linking reaction and elongation reaction, and removing the organic solvent from the liquid dispersion, and the toner satisfying the following relationship: 1.35< or =M(g)/M(p)< or =1.90, where M(g) represents the content of the gel composition formed in the at least one of cross linking reaction and elongation reaction and M(P) represents the content of the prepolymer in the toner liquid material when the total of M(P) and the content of the binder resin in the toner liquid material is set to be 100 g. | 08-19-2010 |
| 20100310980 | TONER, AND DEVELOPER, DEVELOPER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD USING THE TONER - A toner, including a colorant; a binder resin; a release agent; and a fixing supplemental component, wherein the toner has a storage elastic modulus G′ (Pa) satisfying the following conditions: | 12-09-2010 |
| 20110076610 | METHOD OF MANUFACTURING TONER AND TONER MANUFACTURED BY THE METHOD - A method of manufacturing toner including melting, mixing, and kneading a releasing agent and a coloring agent with at least part of a polyester binder resin, and suspending and granulating an oil phase comprising the binder resin, the coloring agent, and the releasing agent in an aqueous medium. | 03-31-2011 |
| 20110086308 | 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, along with a method for their production. A toner producing method involves dispersing and/or emulsifying an oil phase or a monomer phase containing a toner composition and/or a toner composition precursor in a water-based medium to granulate, | 04-14-2011 |
