Patent application number | Description | Published |
20110065036 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - A toner including: a first binder resin; a colorant; a releasing agent; and a crystalline organic compound, wherein the first binder resin contains an amorphous polyester resin (a) having a polyhydroxycarboxylic acid skeleton derived from optically active monomers in a part of a main chain of the amorphous polyester resin, and the polyhydroxycarboxylic acid skeleton has an optical purity X, calculated on the monomer basis, of 80% or less, and the optical purity X is determined from the equation, | 03-17-2011 |
20110124838 | METHOD FOR PRODUCTION TONER, TONER, AND METHOD FOR RECYCLING PAPER - The present invention provides a method for producing a toner, which includes 1) saccharifying paper by at least one of a chemical degradation method and a biochemical degradation method to obtain a sugar-containing solution, 2) subjecting the sugar-containing solution obtained through 1) to lactic acid fermentation to obtain a lactic acid, 3) polymerizing the lactic acid obtained through 2) to obtain a polylactic acid, and 4) producing a toner using the polylactic acid obtained through 3). | 05-26-2011 |
20110151370 | TONER - The present invention provides a toner including: a colorant, and a binder resin, wherein the toner is fixed on a recording medium using a fixing liquid containing a softening agent for softening the toner, and wherein a weight average molecular weight of a THF soluble fraction of the toner in a molecular weight distribution measured by gel permeation chromatography (GPC) is 3,000 to 8,300; and a glass transition temperature of the toner measured by differential scanning calorimetry (DSC) is 50° C. to 70° C. | 06-23-2011 |
20110281213 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING METHOD - A toner containing a binder resin comprising a first binder resin A and a second binder resin B, a coloring agent, and a releasing agent, wherein the first binder resin A is formed by reacting a compound A1 having an active hydrogen group with a resin A2 having a portion reactive with the compound A1 in an organic solvent and the resin A2 is formed by reacting a non-crystalline polyester resin “a” having a polyhydroxy carboxylic acid skeleton in the main chain with a compound having the portion reactive with the compound A1 having an active hydrogen group. | 11-17-2011 |
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 |
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 |
20130045442 | TONER, DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner including a resin particle (C) is provided. The resin particle (C) includes a resin particle (B) and a resin particle (A). The resin particle (B) includes a resin (b). The resin particle (A) or covering layer (P) includes a resin (a). The resin particle (A) or covering layer (P) is adhered to a surface of the resin particle (B). The resin (a) is a polyester resin. The resin (a) has a total acid value of 15 to 36 mgKOH/g. The resin particle (A) or covering layer (P) has a surface acid value of 10 to 27 mgKOH/g. | 02-21-2013 |
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 |
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 |
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 |
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 |
20130244168 | TONER, METHOD OF MANUFACTURING TONER, DEVELOPER, TONER CONTAINER, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE - A toner including a resin particle (C) is provided. The resin particle (C) includes a resin particle (B) and; a resin particle (A) or covering layer (P) that is adhered to a surface of the resin particle (B). The resin particle (B) includes a resin (b) having a polyhydroxycarboxylic acid skeleton. The resin particle (A) or covering layer (P) includes a resin (a). The resin (a) is a polyester resin having a polybasic acid unit and a polyol unit and has a weight average molecular weight within a range from 9,500 to 100,000. | 09-19-2013 |
20140242514 | PARTICULATE MATERIAL PRODUCTION METHOD, AND PARTICULATE MATERIAL PRODUCTION APPARATUS - A particulate material production method is provided. The particulate material production method includes ejecting a particulate material composition liquid, which includes an organic solvent and a particulate material composition including at least a resin and dissolved or dispersed in the organic solvent, from at least one nozzle to form droplets of the particulate material composition liquid in a gas phase; and solidifying the droplets of the particulate material composition liquid to prepare particles of the particulate material composition. The droplet solidifying step includes contacting the droplets with a poor solvent for the particulate material composition. | 08-28-2014 |
20140272695 | TONER, DEVELOPMENT AGENT, AND IMAGE FORMING APPARATUS - Toner contains a binder resin containing one or more kinds of crystalline resin and one or more kinds of non-crystalline resin. The non-crystalline resin located at the surface portion of the toner forms a shell structure of a continuous phase of the non-crystalline resin and the toner has an amount of melting heat of 30 J/g or more in a second temperature rising as measured by differential scanning calorimetry (DSC). | 09-18-2014 |
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 |
Patent application number | Description | Published |
20080226998 | FINE ORGANIC SILICONE PARTICLE FOR LATENT ELECTROSTATIC IMAGE DEVELOPING TONERS, EXTERNAL ADDITIVE FOR TONERS, TONER FOR DEVELOPING LATENT ELECTROSTATIC IMAGE, AND TWO-COMPONENT DEVELOPER - The present invention provides an organic silicone fine particle for latent electrostatic image developing toners, wherein the organic silicone fine particle has a volume average particle diameter of 0.05 μm to 6.0 μm which is obtained by measurement based on Coulter principle, and has a hemispherical polysiloxane cross-linked structure. | 09-18-2008 |
20080227002 | TONER, DEVELOPER, AND IMAGE FORMING METHOD - To provide a toner including a binder resin and colorant and is granulated in aqueous medium, wherein the binder resin is a polymer having a polyester skeleton, the polyester skeleton is obtained by block copolymerization of a polyester skeleton A in which at least a constituent unit in which CH | 09-18-2008 |
20080280224 | CARRIER AND METHOD FOR PRODUCING THE SAME, DEVELOPER AND IMAGE FORMING METHOD - To provide a method for producing a carrier including treating a coating layer on a surface of a core material with a polymer precursor in a supercritical fluid and/or a subcritical fluid so as to add the polymer precursor to the coating layer, and subjecting the coating layer to oxidation treatment so as to form a polymer from the polymer precursor in the coating layer, and a carrier produced by the method. | 11-13-2008 |
20090003885 | TONER, DEVELOPER, AND IMAGE FORMING APPARATUS - A toner including a colorant and a binder resin is provided. The binder resin includes a first resin comprising a block X comprising a resin comprising a racemic mixture of optically active monomers of a D-form compound and an L-form compound, and a block Y comprising another resin. The weight ratio of the D-form compound to the L-form compound is from 48/52 to 52/48, and the weight ratio of the block Y to the block X is from 1/3 to 3/1. The toner is obtained by dispersing or emulsifying a toner constituent liquid, in which the colorant and the binder resin are dissolved or dispersed in an organic solvent, in an aqueous medium. | 01-01-2009 |
20090186292 | CARRIER, PRODUCTION METHOD THEREOF, DEVELOPER AND IMAGE FORMING METHOD - There is provided a method for producing a carrier, which includes depositing a resin coating layer on the surface of a magnetic material; adding a treatment agent for a conductor precursor to the resin coating layer so as to treat the resin coating layer with the treatment agent; and exposing the treatment agent-added resin coating layer to a conductor precursor in a supercritical or subcritical fluid so as to form a conductor in the resin coating layer. | 07-23-2009 |
20090202935 | CARRIER, TWO-COMPONENT DEVELOPER CONTAINING CARRIER AND TONER, AND IMAGE FORMING METHOD - A carrier including magnetic core particles and a coating layer, wherein the coating layer is formed by applying a coating liquid containing at least colloidal silica, a condensate of alkoxysilane represented by General Formula (1) and a solvent onto the core particles; an amount of colloidal silica contained in the coating layer is less than 60% by mass; and a ratio (h/Dw) of a thickness (h) of the coating layer to a weight average particle diameter (Dw) of the carrier is more than 0.01, wherein the carrier is used in a two-component developer together with a toner produced through aqueous granulation and containing at least a colorant, a binder resin and a releasing agent, and wherein an amount of the releasing agent present in a region from a surface of the toner to a depth of 0.3 μm is less than 4% by mass as measured through FTIR-ATR spectroscopy. | 08-13-2009 |