| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 430114000 | Identified toner, i.e., identified resin coated pigment, etc. | 51 |
| 20080311505 | Liquid Developer and Image Forming Device - A liquid developer includes a toner particle mainly composed of a resin material, and a nonvolatile insulating liquid, the resin material including an ethylene copolymer, and the insulating liquid including fatty acid triglyceride. | 12-18-2008 |
| 20080318149 | Marking liquid - A liquid electrostatographic toner or liquid ink jet ink prepared by the steps of heating a marking particle mix of particles of a resin and a colourant blend in a carrier liquid to a temperature between about the first softening point of the resin and about the second softening point of the resin, maintaining the temperature of the heated marking particle mix for a selected period of time, cooling the marking particle mix to room temperature, and mixing the marking particle mix with high shear. The particle mix can be produced by coarse grinding in a ball mill. The resultant toner or ink has an improved Newtonian like flow behaviour, improved electrical properties, reduced sedimentation and agglomeration and significantly improved optical density and reduced background. | 12-25-2008 |
| 20090023088 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulation liquid containing a fatty acid monoester and toner particles comprised of a resin material, the resin material containing a first resin component and a second resin component of which weight-average molecular weight Mw | 01-22-2009 |
| 20090023089 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulation liquid containing a fatty acid monoester and toner particles comprised of a resin material. The resin material is characterized in that a weight-average molecular weight Mw of the resin material is in the range of 20,000 to 200,000, and an amount of a component of which molecular weight M is 10,000 or less contained in the resin material is in the range of 5 to 40 wt %. The liquid developer described above is harmless to the environment. Further, the liquid developer also has superior preservability or storage stability and superior fixing characteristics at a low temperature. An image forming apparatus that can suitably use such a liquid developer is also provided. | 01-22-2009 |
| 20090061346 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulating liquid containing a fatty acid monoester and a toner particle constituted mainly of a resin material, the main toner particle being shaped in a disc form. | 03-05-2009 |
| 20090087773 | LIQUID DEVELOPING AGENT AND PROCESS FOR PRODUCING THE SAME - A liquid developing agent includes a toner particle having a nuclear particle and a covering layer containing a wax, provided on the surface of the nuclear particle in which the wax has at least one of polar groups and aromatic substituent groups, is substantially insoluble in an electric insulation solvent at room temperature, has a melting point below a boiling point of the electric insulation solvent, and is dissolved in the insulation solvent at a temperature higher than the melting point. | 04-02-2009 |
| 20090181318 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulation liquid, toner particles dispersed in the insulation liquid, which at least a part of the surface of each of the toner particles contains a rosin resin and a dispersant improving dispersibility of the toner particles in the insulation liquid, which the dispersant is consisted of a material having a predetermined amine value. The liquid developer described above has superior positive charge property of toner particles and which has superior dispersibility of the toner particles for a long period of time. Further, an image forming apparatus that can suitably use such a liquid developer is also provided. | 07-16-2009 |
| 20090233214 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulating liquid; toner particles constituted by a material containing a polyester resin; and an alkyl diamine and an amide compound having a hydroxy fatty acid skeleton as dispersants. | 09-17-2009 |
| 20090233215 | Liquid Developer and Image Forming Apparatus - A liquid developer includes an insulating liquid; toner particles mainly constituted by a resin material; and a dispersant having an amine value, wherein a power of hydrogen ion concentration pH of the liquid developer at 24° C. is from 4 to 7. | 09-17-2009 |
| 20090246678 | LIQUID DEVELOPER - It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good. | 10-01-2009 |
| 20090253067 | WET DEVELOPER - To provide a wet developer which is capable of improving fixability, while ensuring a sufficient heat-resistant storage property. The wet developer contains toner particles composed of a colorant and a binder resin, which are dispersed in a non-volatile carrier solution by using a dispersant. As the binder resin, a polyester resin, which has an alcohol component containing a mixture of an ethylene oxide adduct of bisphenol A and a propylene oxide adduct of bisphenol A, with a ratio thereof being 1:19 to 10:10 (weight ratio), is used. | 10-08-2009 |
| 20090253068 | Image transfer system and liquid toner for use therewith - A printing method comprising: forming a first image utilizing a liquid toner comprising carrier liquid and pigmented polymer particles having a first color; transferring the first image to an intermediate transfer member; forming at least one additional image utilizing a liquid toner comprising at least one carrier liquid and pigmented polymer particles having a second color, different from the first color; transferring the at least one additional image to the intermediate transfer member overlaid on the first image, to form a composite image on the intermediate transfer member; and further transferring the composite image to a further substrate, wherein said polymer particles in said first liquid toner and in at least one of said additional liquid toners have different compositions, aside from colorants, the differences in composition including at least one of different polymers or blends of polymers, different amounts or types of placticizers, different amounts of solvated liquid and different compositions of solvated liquid. | 10-08-2009 |
| 20100009281 | DEVELOPING AGENT AND METHOD FOR PRODUCING DEVELOPING AGENT - The method for producing a developing agent according to the invention contains subjecting the toner material dispersion liquid to mechanical shearing to make the granular mixture into fine particles, thereby providing a dispersion liquid containing fine particles having a smaller particle diameter than a particle diameter of the granular mixture. The toner material dispersion liquid is subjected to mechanical shearing under a temperature of a glass transition point Tg of the binder resin or more and a pressure of 10 MPa or more, and the resulting dispersion liquid containing the fine particles is depressurized with two or more stages while maintaining the temperature of a glass transition point Tg of the binder resin or more and then cooled to a temperature of a glass transition point Tg of the binder resin or less. | 01-14-2010 |
| 20100055602 | Liquid Developer and Image Forming Method - A liquid developer includes: toner particles containing a rosin resin; an insulating liquid containing an epoxy-modified compound in liquid form; and a cationic photopolymerization initiator. | 03-04-2010 |
| 20100062361 | LIQUID DEVELOPING AGENT AND PROCESS FOR PRODUCING THE SAME - A liquid developing agent for electrophotography or electrostatic recording that can realize a high solid content and has excellent developing properties is characterized in that colored chips produced by heat kneading a pigment with a thermoplastic resin are dispersed by wet pulverization in an electrically insulating hydrocarbon solvent containing at least one pigment dispersant selected from the group consisting of specific modified novolak resins (A) having an aromatic ring and a ring opened structure of an epoxy group by a hydroxycarboxylic acid-derived carboxyl group, and copolymers (B). | 03-11-2010 |
| 20100143837 | AQUEOUS DISPERSIONS FOR USE AS TONERS - A compound that includes an aqueous dispersion, wherein the dispersion includes a thermoplastic resin and at least one stabilizing agent, and at least one selected from the group consisting of a colorant and a magnetic pigment, wherein the dispersion has an average volume diameter particle size from about 0.05 to about 10 microns is described. | 06-10-2010 |
| 20100233614 | LIQUID DEVELOPER AND IMAGE FORMING METHOD - Provided is a liquid developer containing toner particles and an insulating liquid containing an epoxy modified fatty acid alkyl ester. | 09-16-2010 |
| 20100248128 | LIQUID DEVELOPER AND IMAGE FORMING METHOD - Provided is a liquid developer containing toner particles and an insulating liquid containing a hydrogen modified silicon compound. | 09-30-2010 |
| 20110008725 | Marking liquid - A liquid electrostatographic toner or liquid ink jet ink prepared by the steps of heating a marking particle mix of particles of a resin and a colourant blend in a carrier liquid to a temperature between about the first softening point of the resin and about the second softening point of the resin, maintaining the temperature of the heated marking particle mix for a selected period of time, cooling the marking particle mix to room temperature, and mixing the marking particle mix with high shear. The particle mix can be produced by coarse grinding in a ball mill. The resultant toner or ink has an improved Newtonian like flow behaviour, improved electrical properties, reduced sedimentation and agglomeration and significantly improved optical density and reduced background. | 01-13-2011 |
| 20110020748 | TONER PARTICLE FOR LIQUID DEVELOPMENT AND METHOD FOR MANUFACTURING THE SAME, LIQUID DEVELOPER, LIQUID DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE-FORMING APPARATUS - A toner particle for liquid development is provided, the toner particle having a plurality of projections and a coat above at least a part of a surface of the toner particle, the toner particle further containing a crystal that forms at least one of the plurality of projections. | 01-27-2011 |
| 20120141933 | LIQUID DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - The present invention provides a liquid developer including an insulating carrier liquid and toner particles containing a binder resin, the binder resin including a styrene-based thermoplastic elastomer and a styrene thermoplastic resin, and the toner particles being dispersed in the insulating carrier liquid. | 06-07-2012 |
| 20120315577 | Liquid Developer - A liquid developer includes toner particles, an insulating liquid, and a dispersant, and is characterized in that the toner particles includes a resin and a pigment dispersed in the resin, the resin includes a polyester resin, the dispersant includes a basic polymeric dispersant, and a solid obtained by drying the liquid developer has a melting point of at least 55° C. | 12-13-2012 |
| 20130022907 | POLYMER DERIVED FROM DEHYDROABIETIC ACID AND USES THEREOF - Disclosed is a polymer which has a repeating unit containing a skeleton derived from dehydroabietic acid in the main chain, and has a glass transition point of 80° C. or lower. | 01-24-2013 |
| 20130034809 | NONAQUEOUS DISPERSION OF RESIN PARTICLES - Provided is a nonaqueous dispersion of resin particles, in which the resin particles have uniform particle diameters and shapes and which exhibits excellent fixing properties, particularly when used as a liquid electrophotographic developer. More specifically, provided is a nonaqueous dispersion (X) in which resin particles (C) are dispersed in a nonhydrophilic organic solvent (L) that exhibits a relative permittivity of 1 to 4 at 20° C., the resin particles (C) being core-shell type resin particles each of which comprise a resin particle (B) that contains a resin (b) and fine particles (A) that contain a resin (a) and that either adhere to the surface of the resin particle (B) or form a film on the surface of the resin particle (B), wherein the solubility of (a) in (L) at 25° C. is 10 wt % or less relative to the weight of (a). | 02-07-2013 |
| 20130059249 | REACTOR, TONER PRODUCTION METHOD, AND TONER - A reactor, which heats a slurry raw material including a solid component, including a reaction tube, wherein the slurry raw material is continuously fed from an end of the reaction tube relative to the central axial direction of the reaction tube so as to be flown toward another end of the reaction tube to be heated; and plural perforated plates arranged in the reaction tube so as to separate the inside of the reaction tube into plural compartments. The reactor satisfies the relations (½)·D′≦D| 03-07-2013 | |
| 20130065176 | LIQUID DEVELOPER - A liquid developer includes at least toner particles and an insulating liquid. The toner particles include a resin and a color material dispersed in the resin. 90 mass % or more of the insulating liquid is aliphatic saturated hydrocarbon having a carbon number of 11 to 16, and 20 to 60 mass % of the insulating liquid is aliphatic saturated hydrocarbon having a carbon number of 11 to 12. | 03-14-2013 |
| 20130115552 | LIQUID DEVELOPER - A liquid developer used for wet-type image forming apparatuses includes toner particles and an insulating liquid, the toner particles include a resin, a pigment, and a pigment dispersant, the pigment includes a pigment having an acid group, and the pigment dispersant is a basic polymer dispersant including units derived from ε-caprolactone. | 05-09-2013 |
| 20130302733 | LIQUID ELECTROPHOTOGRAPHIC INK AND METHOD FOR MAKING THE SAME - A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein. | 11-14-2013 |
| 20140030651 | LIQUID TONER COMPOSITION - The present disclosure is drawn to a liquid toner composition comprising:
| 01-30-2014 |
| 20140087302 | LIQUID DEVELOPER AND METHOD FOR MANUFACTURING THE SAME - In a liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin particles further contain a pigment and a dispersant for pigment, and solubility of the dispersant for pigment in the insulating liquid is not higher than 10 mass % at 25° C. | 03-27-2014 |
| 20140087303 | LIQUID DEVELOPER - A liquid developer is obtained by dispersing toner particles containing at least a resin and a coloring agent in an insulating liquid. The toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The coloring agent contains nigrosine. A content of nigrosine in the toner particles is not lower than 1 mass % and not higher than 20 mass %. The second resin satisfies Equations (1) to (2) below. In Equations (1) to (2), x represents a number average molecular weight of the second resin and y represents a urethane group concentration (mass %) in the second resin. | 03-27-2014 |
| 20140087304 | LIQUID DEVELOPER AND METHOD FOR MANUFACTURING THE SAME - Toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. Heat of fusion with differential scanning calorimetry of the second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, H1 and H2 represent heats of fusion (J/g) at initial temperature increase and second temperature increase with differential scanning calorimetry of the second resin, respectively. | 03-27-2014 |
| 20140093821 | LIQUID DEVELOPER AND METHOD OF PRODUCING LIQUID DEVELOPER - A method of producing a liquid developer containing an insulation liquid and toner particles is provided. The method includes: grinding a toner material under the presence of a substance A in the insulation liquid; subjecting a dispersion liquid to a heat treatment at a higher temperature than a glass transition temperature of a resin material while giving shear force to the dispersion liquid: and mixing the dispersion liquid having been subjected to the heat treatment with a substance B. A liquid developer including an insulation liquid, toner particles, and a substance B is also provided. The toner particles are constituted of a substance A, a resin material and a coloring agent. The resin material is a polyester resin and/or a styrene-acrylic resin. The substance A is an acrylic modified silicone sufficiently soluble to the insulation liquid and the substance B is a silanol group-containing polysiloxane and/or a fluorine modified silicone. | 04-03-2014 |
| 20140134536 | LIQUID DEVELOPER - A liquid developer includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the resin includes a crystalline resin, the pigment includes a first pigment, a second pigment, and a third pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, the third pigment is nigrosine, and 20 to 60% by mass of the pigment is included relative to the toner particles. | 05-15-2014 |
| 20140134537 | LIQUID DEVELOPER - A liquid developer is characterized in that it includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the pigment includes a first pigment and a second pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, and 20 to 60% by mass of the pigment is included relative to the toner particles. | 05-15-2014 |
| 20140170556 | LIQUID DEVELOPER AND IMAGE FORMING METHOD - A liquid developer includes a carrier liquid having insulation property, colored particles, and an organic high molecular compound. The organic high molecular compound is dissolved in the carrier liquid. The organic high molecular compound includes elastomer A that is a styrene-butadiene-based elastomer not having an acid group or a basic group and elastomer B that is a styrene-based elastomer having an acid group or a basic group. A content of the elastomer A in the liquid developer is 6% by mass or more and 8% by mass or less, and a content of the elastomer B in the liquid developer is 0.4% by mass or more and 0.8% by mass or less. The colored particles include aniline black. | 06-19-2014 |
| 20140186763 | LIQUID DEVELOPER - A liquid developer containing toner particles containing a resin and a pigment, and an insulating liquid, the toner particles being dispersed in the insulating liquid, wherein the insulating liquid contains an olefin having 12 carbon atoms or more and 18 carbon atoms or less in an amount of 10% by mass or more. The liquid developer of the present invention can be suitably used in developing latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like. | 07-03-2014 |
| 20140186764 | METHOD FOR PRODUCING LIQUID DEVELOPER - A method for producing a liquid developer containing toner particles containing a resin containing a polyester and a pigment, and an insulating liquid, wherein the toner particles are dispersed in the insulating liquid, including: step 1: melt-kneading the resin and the pigment, and pulverizing a melt-kneaded mixture to provide toner particles; step 2: dispersing the toner particles obtained in the step 1 in the insulating liquid in the presence of a basic dispersant to provide a dispersion of toner particles; and step 3: wet-milling the dispersion of toner particles obtained in the step 2 to provide a liquid developer, wherein the basic dispersant is an amide compound obtained by a reaction between a polyethyleneimine and a polyester (D) obtained by self-condensation of 12-hydroxystearic acid. The liquid developer obtained by the method of the present invention can be suitably used in development of latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like. | 07-03-2014 |
| 20140234771 | ELECTROSTATIC INK COMPOSITION - The present invention provides an electrostatic ink composition comprising a carrier liquid, a resin, a pigment and a conductive polymer. Method for producing the electrostatic ink composition and methods for printing the composition are also disclosed. | 08-21-2014 |
| 20140287356 | LIQUID DEVELOPER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, LIQUID DEVELOPER CARTRIDGE, AND PROCESS CARTRIDGE - A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (ΔSP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin. | 09-25-2014 |
| 20140363764 | LIQUID DEVELOPER CONTAINING ELECTRO-CONDUCTIVE PARTICLES AND AN ELECTRO-CONDUCTIVE PATTERN FORMING METHOD USING SAID MATERIAL AND AN ELECTRO-CONDUCTIVE PATTERN FORMING APPARATUS USING SAID MATERIAL - A novel liquid toner development system is disclosed. The liquid development system includes conductive core-shell particles comprising silver-copper or copper-silver. A novel apparatus and method relying on the novel liquid toner development system results in electro-conductive patterning capable of high conductivity with low background fogging, reduced processing time and reduced environmental impact. | 12-11-2014 |
| 20150086919 | LIQUID DEVELOPER AND IMAGE FORMATION METHOD - A resin in a liquid developer contains 80 mass % or more of a urethane-modified polyester resin. A component derived from a polyester resin contains a constitutional unit derived from an acid component and a constitutional unit derived from an alcohol component. A ratio of a constitutional unit derived from an aliphatic monomer occupied in the constitutional unit derived from the acid component and the constitutional unit derived from the alcohol component is not lower than 90 mass %. Relation of |T | 03-26-2015 |
| 20150093700 | LIQUID DEVELOPER SET - A liquid developer set of the present invention includes a first liquid developer including an insulating liquid and first toner particles and a second liquid developer including an insulating liquid and second toner particles, the first toner particles include carbon black and a first resin, the second toner particles include a coloring agent other than carbon black and a second resin, without including carbon black, the first resin and the second resin each include a hydrocarbon long chain which is a hydrocarbon group having a carbon number of 8 to 30, and a mass ratio of the hydrocarbon long chain to the first toner particles is higher than a mass ratio of the hydrocarbon long chain to the second toner particles. | 04-02-2015 |
| 20150147692 | LIQUID DEVELOPER, PARTICLES FOR LIQUID DEVELOPER, AND LIQUID DEVELOPER ACCOMMODATION CONTAINER - A liquid developer includes a carrier liquid having silicone oil, and toner particles including a polyester resin and having a value of ammonium ions contained therein measured by underwater extraction in a range of 0.005 ppm to 1 ppm. | 05-28-2015 |
| 20150316868 | LIQUID ELECTROPHOTOGRAPHIC INK - A liquid electrophotographic ink includes a non-polar carrier fluid, a metallic pigment particle, and resin particles. The metallic pigment particle includes a non-functionalized aluminum pigment, and a latex layer directly contacting a surface of the non-functionalized aluminum pigment to encapsulate the non-functionalized aluminum pigment. The resin particles are i) present as discrete particles in the non-polar carrier fluid or ii) associated with the latex layer. | 11-05-2015 |
| 20150370190 | LIQUID DEVELOPING AGENT - The object of the present invention is to provide a liquid developing agent for electrophotography or electrostatic recording obtained by utilizing the coacervation method, wherein such liquid developing agent has good abrasion resistance. To this end, a liquid developing agent is provided which is obtained by utilizing the coacervation method, comprising insulating liquid in which colored resin particles formed by at least pigment, pigment dispersant, acid-group-containing resin, binder resin, and resin whose glass transition temperature is −120 to −60° C. are dispersed, wherein the resin whose glass transition temperature is −120 to −60° C. is contained in the colored resin particle by 1.0 to 5.0 percent by mass. | 12-24-2015 |
| 20160026106 | POSITIVELY CHARGEABLE TONER, LIQUID DEVELOPER, DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD - A positively chargeable toner includes at least a binder resin, and toner particles of which surfaces are modified by a polyvinylamine compound. | 01-28-2016 |
| 20160085170 | LIQUID DEVELOPER - A liquid developer contains an insulating liquid and toner particles dispersed in the insulating liquid. The toner particles have a resin and a coloring agent. The resin contains at least 10 mass % and at most 40 mass % of an aliphatic polyester resin and at least 60 mass % and at most 90 mass % of an aromatic polyester resin. The resin has an acid value not less than 20 mgKOH/g and not more than 100 mgKOH/g. A difference in acid value between the aliphatic polyester resin and the aromatic polyester resin is not less than 0 mgKOH/g and not more than 10 mgKOH/g. | 03-24-2016 |
| 20160085171 | LIQUID DEVELOPER - A liquid developer contains an insulating liquid and toner particles dispersed in the insulating liquid. The toner particles have a resin and a coloring agent. The resin contains at least 5 mass % and at most 30 mass % of an aliphatic polyester resin and at least 70 mass % and at most 95 mass % of an aromatic polyester resin. A difference in acid value between the aliphatic polyester resin and the aromatic polyester resin is not less than 15 mgKOH/g and not more than 100 mgKOH/g. | 03-24-2016 |
| 20160378006 | TONER, DEVELOPER, TONER HOUSING UNIT AND IMAGE FORMING APPARATUS - A toner includes a binder resin; a release agent; and two or more inorganic fine particles as external additives. At least one of the inorganic fine particles is silica. When an ultrasonic oscillation is applied to a dispersion including the toner and a dispersant and a rate of the silica releasing from the toner is 20% based on total silica, an application energy of the ultrasonic oscillation is from 8 to 14 kJ, and from 70 to 130 kJ when the rate of the silica releasing from the toner is 50%. | 12-29-2016 |
| 20170235245 | LIQUID TONER CONTAINING A LOW SYMMETRY ELECTRICALLY CONDUCTING MATERIAL FOR PRINTING CONDUCTIVE TRACES | 08-17-2017 |
