Patent application number | Description | Published |
20080227011 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner including a binder resin, a colorant, and a silicon-containing polymer, which is manufactured by a method including: discharging a toner constituent liquid including toner constituents including the binder resin, the colorant, and the silicon-containing polymer, from at least one discharge opening to form liquid droplets thereof; and converting the liquid droplets into solid toner particles in a granulation space. | 09-18-2008 |
20080292985 | ELECTROPHOTOGRAPHIC TONER AND METHOD FOR PRODUCING THE ELECTROPHOTOGRAPHIC TONER - Provided are an electrophotographic toner and a method for producing the electrophotographic toner that satisfy high image quality, cleaning stability, and high productivity. | 11-27-2008 |
20090170018 | TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGE, METHOD FOR PRODUCING THE SAME AND APPARATUS FOR PRODUCING THE SAME, AND DEVELOPER, TONER CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - There is provided a toner for developing a latent electrostatic image, obtained by a method containing: ejecting a toner composition fluid from an ejection hole so as to make the toner composition fluid into droplets; and solidifying the droplets in an atomizing space so as to form solid particles, wherein the toner composition fluid contains at least a colorant formed by reacting a polymer containing 10 mol % or more of a monomer unit having a sulfonic acid group or a salt thereof, or a monomer unit having a sulfuric acid group or a salt thereof as a constitutional unit, and a basic dye. | 07-02-2009 |
20090170019 | TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - To provide a toner for developing an electrostatic charge image, the toner containing at least a colorant obtained by reacting a polymer with a basic dye, wherein the polymer contains 10 mol % or more of a monomer unit having any one of a sulfonic acid group, a sulfonic acid salt group, a sulfuric acid group and a sulfuric acid salt group as a constitutional unit, and the toner is obtained by forming a toner composition liquid containing at least the colorant into oil droplets in an aqueous medium, and solidifying the oil droplets into solid particles. | 07-02-2009 |
20090239170 | METHOD FOR PRODUCING TONER, AND TONER - A method for producing a toner, the method including discharging a toner composition liquid from a plurality of nozzles to form liquid droplets thereof, the toner composition liquid being prepared by dissolving or dispersing in a solvent a toner composition containing at least a binder resin, a colorant, an acid-modified hydrocarbon wax and an unmodified hydrocarbon wax, the waxes serving as a releasing agent, and solidifying the liquid droplets so as to form solid particles. | 09-24-2009 |
20090317738 | METHOD AND APPARATUS FOR PRODUCING TONER - A method for producing a toner, including ejecting a toner composition liquid containing at least a resin and a colorant periodically from a plurality of nozzles into a chamber using a vibration unit, so as to form droplets in a gas phase; and solidifying the droplets, wherein the droplets are transported by transport air flow selected from at least one of vertical downward air flow and rotational air flow, and the method can prevent toner particles from aggregation. | 12-24-2009 |
20110033203 | TONER, METHOD FOR MANUFACTURING THE TONER, DEVELOPER INCLUDING THE TONER, CONTAINER CONTAINING THE TONER, AND IMAGE FORMING METHOD AND APPARATUS AND PROCESS CARTRIDGE USING THE TONER - An image forming method including forming an electrostatic latent image on an image bearing member; developing the electrostatic latent image with a developer including a toner to prepare a toner image on the image bearing member; transferring the toner image onto a receiving material; and cleaning the surface of the image bearing member with a cleaning blade; wherein a surface of the image bearing member has a friction coefficient of from 0.10 to 0.40, and wherein the toner has an average circularity of from 0.97 to 1.00 and includes toner particles and a particulate material having an average particle diameter of from 0.03 to 1 μm, wherein the particulate material is externally added to the toner particles by a wet method. | 02-10-2011 |
20130196266 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner produced by dissolving or dispersing toner components comprising a binder resin, a colorant, and a charge controlling agent in an organic solvent to prepare a toner components liquid, forming liquid droplets of the toner components liquid in a gas phase, and solidifying the liquid droplets into toner particles of the toner. The charge controlling agent includes a polycondensation reaction product of a phenol with an aldehyde. | 08-01-2013 |
Patent application number | Description | Published |
20090325100 | TONER, AND METHOD FOR PRODUCING THE SAME - The present invention provides a toner containing at least two binder resins composed of at least a resin A and a resin B which are incompatible with each other, and a colorant, wherein the toner has an average circularity of 0.93 to 0.98 and is produced by atomizing a toner composition liquid in a vapor phase to form liquid droplets and solidifying the liquid droplets, and the toner composition liquid is prepared by dissolving or dispersing the at least two binder resins and the colorant in an organic solvent. | 12-31-2009 |
20100310982 | METHOD FOR PRODUCING CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, ELECTROPHOTOGRAPHIC DEVELOPER, AND IMAGE FORMING METHOD - A method for producing a carrier, including a step of periodically forming and discharging liquid droplets of a carrier core composition liquid from a plurality of nozzles formed in a thin film, using a liquid droplet forming unit having the thin film and a ring-shaped vibration generating unit disposed in a deformable area of the thin film so as to be along a circumference of the area and to vibrate the thin film, a step of forming carrier core particles by solidifying the discharged liquid droplets, and a step of coating the carrier core particles with a resin layer. | 12-09-2010 |
20120112374 | METHOD FOR PRODUCING PARTICLES, METHOD FOR PRODUCING TONER, AND APPARATUS FOR PRODUCING PARTICLES - A method for producing particles, including: bringing a compressive fluid into contact with a pressure plastic material, so as to produce a melt of the pressure plastic material; and discharging the melt of the pressure plastic material by differential pressure to a space, so as to form particles, wherein the discharging includes at least one of (A) discharging the melt of the pressure plastic material while a compressive fluid is supplied to the melt of the pressure plastic material, and (B) discharging the melt of the pressure plastic material through one or more through-holes, to which vibration is applied, so as to change the shape of the melt of the pressure plastic material from a columnar shape, through the columnar shape with constrictions, into a particle shape. | 05-10-2012 |
20120225377 | PARTICLE PRODUCING METHOD, PARTICLE, TONER, DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PARTICLE PRODUCING METHOD - A particle producing method is provided including bringing a material into contact with a compressible fluid to prepare a melt of the material, and discharging the melt from a vibrated through hole to form particles of the melt. A particle producing apparatus is also provided including a discharger to discharge the melt. The discharger includes a storage to store the melt, at least one through hole disposed on the storage, and a vibrator to vibrate the through hole. The particle producing apparatus further includes a particle forming member defining a space within which the discharged melt is formed into particles and a pressure controller controlling a pressure difference between the space and an inside of the storage so that the discharged melt is formed into a columnar melt and the columnar melt is constricted and separated into particles. | 09-06-2012 |
20150016842 | CHARGER, ION GENERATOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A charger to apply a charge to an object is provided. The charger includes an electron emitter including an electroconductive substrate; and a layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms, which is located on the electroconductive substrate, wherein the concentration of oxygen atoms in the layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms is higher than the concentration of magnesium atoms in the layer. | 01-15-2015 |
20150246553 | RECORDING MEDIUM, IMAGE RECORDING APPARATUS, AND IMAGE RECORDING SET - A recording medium including a first base; a second base; and an image recording layer provided between the first base and the second base, wherein the image recording layer contains electrophoretic particles, a dispersion medium, and a thermoreversible gelling agent, and wherein at least one type of the electrophoretic particles is electret particles is provided. | 09-03-2015 |
Patent application number | Description | Published |
20080241727 | METHOD AND APPARATUS FOR MANUFACTURING TONER, AND ELECTROPHOTOGRAPHIC TONER MANUFACTURED BY THE METHOD - A method for manufacturing toner includes steps of supplying, periodically dispensing, and solidifying. The supply step supplies a liquid to be atomized, which includes at least a resin and a colorant. The periodic dispensation step periodically dispenses droplets of the liquid through an atomizing unit. The solidification step solidifies the dispensed droplets into toner particles. The atomizing unit includes a thin film, a vibration actuator, and multiple holes. The thin film has a relatively stiff portion and a relatively elastic portion, and is configured to contact the liquid. The vibration actuator is connected to and supports a periphery of the thin film, and is configured to induce vibration of the thin film. The multiple holes are formed in the relatively stiff portion, and are configured to discharge droplets therethrough when the thin film vibrates. | 10-02-2008 |
20080248416 | TONER PREPARATION METHOD AND APPARATUS, AND TONER PREPARED THEREBY - A method of preparing a toner, including periodically dripping and discharging a droplet of a toner constituent liquid including a resin and a colorant; and solidifying and granulating the droplet, wherein the dripper includes a thin film including plural nozzles; and an oscillator including an oscillation generator generating an oscillation; and an oscillation amplifier, including an oscillation surface facing the thin film in parallel therewith, amplifying the oscillation, and wherein the toner constituent liquid is fed between the thin film and the oscillation surface. | 10-09-2008 |
20080286680 | METHOD AND APPARATUS FOR MANUFACTURING TONER AND TONER MANUFACTURED BY THE APPARATUS AND METHOD - A method for manufacturing a toner, including periodically forming liquid droplets of a toner constituent liquid comprising a resin and a colorant by vibrating a thin film having a plurality of holes provided on a retention part thereof to discharge the liquid droplets of the toner constituent liquid from the plurality of holes and forming toner particles by solidifying the liquid droplets discharged from the plurality of holes. In periodically forming the liquid droplets of the toner constituent liquid, a flow of gas in a direction of discharge of the liquid droplets is formed by a gas flow generation unit provided downstream from the thin film relative to the direction of discharge of the liquid droplets, including a tapered part forming an aperture corresponding to a hole formation area of the thin film. | 11-20-2008 |
20090117486 | METHOD OF PREPARING TONER AND THE TONER, AND DEVELOPER AND IMAGE FORMING METHOD USING THE TONER - A method of preparing a toner, including periodically discharging a toner constituent liquid from plural nozzles having the same aperture diameter with a mechanical oscillator, wherein the toner constituent liquid includes:
| 05-07-2009 |
20100003613 | TONER, METHOD OF PRODUCING TONER, AND IMAGE FORMING METHOD - A toner produced by a method including dissolving or dispersing toner components comprising a resin, a colorant, and a release agent in a solvent to prepare a toner components liquid, discharging the toner components liquid from multiple nozzles provided on a thin film by vibrating the thin film by a mechanical vibration unit to form liquid droplets, and drying the liquid droplets into solid particles of the toner. The particle diameter distribution that is a ratio of a weight average particle diameter to a number average particle diameter of the toner is between 1.00 and 1.15, and a weight average particle diameter of the release agent in the toner is between 1% and 30% of an aperture diameter of the nozzle. | 01-07-2010 |
20100021209 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner produced by dissolving or dispersing toner components comprising a binder resin, a colorant, and a charge controlling agent in an organic solvent to prepare a toner components liquid, forming liquid droplets of the toner components liquid in a gas phase, and solidifying the liquid droplets into toner particles of the toner. The charge controlling agent includes a polycondensation reaction product of a phenol with an aldehyde. | 01-28-2010 |