Entries |
Document | Title | Date |
20080199801 | Liquid Developer and Image Forming Apparatus - A liquid developer includes: an insulating liquid having dispersed therein toner particles, the insulating liquid containing a fatty acid monoester that is an ester of a fatty acid and a monohydric alcohol, and the insulating liquid having an aniline point of from 5 to 80° C. | 08-21-2008 |
20080213685 | METHOD OF PROVIDING AN AQUEOUS DISPERSION SUITABLE FOR USE AS A CHEMICALLY PRODUCED TONER - Provided herein are methods of forming an aqueous dispersion suitable for use in a chemically produced toner that include a) dissolving a polyester resin in a volatile organic solvent to form a solution of the polyester in the volatile organic solvent; b) adding a neutralizing agent comprising at least one of an alkali metal hydroxide, an ammonium hydroxide and a tertiary amine, and water to the solution of the polyester in the volatile organic solvent to form a first aqueous dispersion; and c) heating the dispersion to remove solvent to provide a second aqueous dispersion. Also provided are aqueous dispersions formed by methods according to embodiments of the invention and toners resin compositions including an aqueous dispersion according to an embodiment of the invention. | 09-04-2008 |
20080233511 | TONER, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE SAME - A toner including particles including a toner composition including a binder resin and a coloring material, wherein the toner composition includes a laminate compound A in which a cation between layers is modified by an organic cation, and a laminate compound B in which an anion between layers is modified by an organic anion, the laminate compound A is of negative charging property upon particulation of the laminate compound A by dispersion or internal addition in the binder resin and the laminate compound B is of positive charging property upon particulation of the laminate compound B by dispersion or internal addition in the binder resin, and the toner is of a positive charging property. | 09-25-2008 |
20090148785 | Wet developer having specific temperature characteristics of dynamic viscoelasticity and fixing method using the same - The present invention relates to a wet developer comprising:
| 06-11-2009 |
20090239174 | FLUORESCENT MAGNETIC POWDER, METHOD OF MANUFACTURING THE SAME, MAGNETIC INK COMPOSITION, MAGNETIC POLYMER PARTICLE, LIQUID DEVELOPER FOR MAGNETIC LATENT IMAGE, CARTRIDGE, AND IMAGE FORMING APPARATUS - Fluorescent magnetic powder in which a fluorescent dye is attached to the particles of magnetic powder is provided. | 09-24-2009 |
20090274973 | LIQUID DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A liquid developer includes: an aqueous medium; and a magnetic toner which is substantially dispersed in the aqueous medium and includes a polymer compound and a magnetic powder, the amount of the magnetic powder being from about 0.2 volume % to about 5 volume % with respect to the magnetic toner. | 11-05-2009 |
20090305160 | TONER COMPOSITIONS FOR DECREASING BACKGROUND DEVELOPMENT IN LIQUID ELECTROSTATIC PRINTING AND METHODS FOR MAKING AND USING SAME - A toner for use in liquid electrostatic printing, comprising: a carrier liquid; and, a plurality of toner particles, the toner particles being comprised of a pigment; and a mixture of resins, a major portion of the mixture comprising at least a first resin and a minor portion comprising at least one second resin, the second resin having an affinity for the pigment, that is greater than the affinity of the first resin for the pigment, such that the amount of free pigment in the carrier liquid separate from the toner particles is reduced over the amount that would be present in the absence of the at least one second resin of the minor portion. | 12-10-2009 |
20100015546 | Process for Producing Toner for Liquid Developer, Toner for Liquid Developer, Process for Producing Liquid Developer, Liquid Developer, and Image Forming Apparatus - A process for producing a toner for a liquid developer includes: preparing an emulsion liquid containing an aqueous dispersion medium and, dispersed therein, dispersoids containing a resin material which has an acidic group having a salt structure formed with a basic substance and has an acid value of from 5.0 to 20 mg KOH/mg when it is in a form of an acidic substance without forming a salt with the basic substance, a colorant and an organic solvent which dissolves the resin material; coalescing the dispersoids contained in the emulsion liquid to obtain coalescent particles; removing the organic solvent contained in the coalescent particles to obtain colored resin particles; washing the colored resin particles with an aqueous liquid (first washing step); dispersing the washed colored resin particles in an aqueous liquid and performing an acid treatment to obtain an acidic dispersion liquid having a hydrogen ion exponent (pH) adjusted to 3.0 to 6.0; washing the colored resin particles subjected to the acid treatment with an aqueous liquid (second washing step); and drying the colored resin particles subjected to the second washing step. | 01-21-2010 |
20100167197 | TONER AND PROCESS FOR PRODUCING THE SAME - A toner includes aggregated particles produced by preparing in an aqueous medium a mixed dispersion including at least a first resin particle dispersion in which first resin particles are dispersed, a colorant particle dispersion in which colorant particles are dispersed, and a wax particle dispersion in which wax particles are dispersed, heating the mixed dispersion so that at least part of the wax particles is melted, and aggregating the first resin particles, the colorant particles, and the wax particles at least part of which is melted by the addition of an aqueous solution containing an aggregating agent. Thus, the toner can have a smaller particle size and a sharp particle size distribution without requiring a classification process. Moreover, the toner can achieve a longer life and suppress transfer voids or scattering during transfer. | 07-01-2010 |
20100209840 | DEVELOPING AGENT AND METHOD FOR PRODUCING THE SAME - As a first dispersion liquid containing first fine particles and a second dispersion liquid containing second fine particles, those satisfy the relationship represented by the following formula (1) are used, and these two dispersion liquids are mixed with each other, and an aggregating agent and a pH adjusting agent are added thereto in sequence, whereby encapsulation is achieved by selective formation of core particles through aggregation of the first fine particles and shells through aggregation of the second fine particles. | 08-19-2010 |
20100248127 | LIQUID DEVELOPER, METHOD FOR PRODUCING LIQUID DEVELOPER, AND IMAGE FORMING APPARATUS - A liquid developer includes: magnetic polymer particles including a magnetic material containing yttrium iron garnet (YIG), a polymer compound having a carboxylate salt structure, and a colorant; and a dispersion medium in which the magnetic polymer particles are dispersed. | 09-30-2010 |
20110045400 | LIQUID DEVELOPER AND IMAGE-FORMING APPARATUS - A liquid developer contains toner, a carrier liquid in which the toner are dispersed, and a graft copolymer of an acrylic polymer and a polysiloxane. | 02-24-2011 |
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 |
20110177448 | Liquid Developer and Image-Forming Apparatus - A liquid developer contains a liquid insulator formed of a liquid hydrocarbon, toner particles formed by chemically modifying surfaces of mother toner particles formed of a material containing a rosin-based resin and a polyester resin with a polyalkyleneimine, and a metal soap dissolved in the liquid insulator. | 07-21-2011 |
20110183254 | PHOTOCURABLE LIQUID DEVELOPER, METHOD FOR PRODUCING THE SAME, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - To provide a photocurable liquid developer including colored resin particles, and an electrically insulating liquid that cures by light, wherein the electrically insulating liquid contains an unsaturated group-containing silicone compound represented by General Formula (1) below, | 07-28-2011 |
20120058426 | MARKING AGENT CONCENTRATION METHODS, MARKING AGENTS, AND HARD IMAGING METHODS - A marking agent concentration method includes concentrating the marking agent by removing at least some liquid carrier between particles without substantially removing retained liquid carrier within the particles and without substantially modifying the particle structure, which is supported by the retained liquid carrier. The concentrated marking agent is supplied to distributors or end users of liquid marking agent. A concentrated marking agent includes solid clumps of agglomerated particles and a liquid carrier retained within the particles' individual structure. The clumps exhibit a median size greater than 90 μm. The concentrated marking agent exhibiting a solids content of from 40 wt % to less than 90 wt %. A hard imaging method includes combining a concentrated marking agent with additional liquid carrier, applying a shear force, dispersing particles from clumps, forming a liquid marking agent, and forming a hard image using the liquid marking agent. | 03-08-2012 |
20120196222 | LIQUID ELECTROPHOTOGRAPHIC INK CONCENTRATES AND METHODS FOR PREPARING THE SAME - Liquid electrophotographic ink concentrates and methods of preparing the same are disclosed herein. An example of the method includes preparing a mixture of ink components using a first predetermined thermal profile. The ink components include a resin, a pigment, and a carrier. The method further includes preparing a microfluidizer with a composition at a temperature within a predetermined range and processing the mixture in the prepared microfluidizer to form the concentrate. Processing the mixture includes pressure-feeding the mixture into the prepared microfluidizer, passing the mixture through the prepared microfluidizer for a predetermined number of times, and utilizing a second predetermined thermal profile while passing the mixture through the prepared microfluidizer. A viscosity modifier is added to the mixture before and/or during the processing of the mixture. | 08-02-2012 |
20130078568 | LIQUID DEVELOPER, DEVELOPER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: | 03-28-2013 |
20130224649 | LIQUID ELECTROPHOTOGRAPHIC INK - The present disclosure provides for liquid electrophotographic inks having charge stabilizers and associated methods. In one example, a liquid electrophotographic ink can comprise a carrier liquid, a resin, a pigment, a negative charge director, and a charge stabilizer having a reduction potential of 0.16 v to 3.0 v. | 08-29-2013 |
20130288175 | LIQUID ELECTROPHOTOGRAPHIC INKS - A liquid electrophotographic ink is disclosed. The liquid electrophotographic ink includes a carrier liquid, a polymer resin, and a pearlescent pigment particle. | 10-31-2013 |
20130288176 | LIQUID ELECTROPHOTOGRAPHIC INKS - An ink is disclosed. The ink includes a carrier fluid; an encapsulated metallic pigment particle further including a metallic pigment particle and a polymer, wherein the polymer covers between 70% and 100%, inclusive, of the surface area of the metallic pigment particle and wherein the morphology of the metallic pigment particle by itself is substantially the same as the morphology of the metallic pigment particle covered by the polymer; and a polymer resin. | 10-31-2013 |
20140065537 | CONTINUOUS PROCESS FOR MANUFACTURING TONERS - The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary. | 03-06-2014 |
20140127623 | LIQUID DEVELOPER AND IMAGE FORMING METHOD - A liquid developer includes an insulating carrier liquid, colored particles, an organic macromolecular compound, and a dispersant. The organic macromolecular compound is dissolved in the carrier liquid. The organic macromolecular compound is formed of a copolymer resin selected from cyclic olefin copolymers and styrene-based elastomers. The colored particles are dispersed in the carrier liquid. Each of the colored particles includes a binder resin and carbon black. A mass ratio (V/OP) of a content (V) of the dispersant in the liquid developer to a content (OP) of the organic macromolecular compound in the liquid developer is 0.2 or larger and 0.8 or smaller. | 05-08-2014 |
20140234769 | LIQUID DEVELOPER - A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a median size not smaller than 1 μm and not greater than 3 μm as a whole. In the plurality of toner particles, average circularity is not smaller than 0.90 and not greater than 0.96, and a standard deviation of circularity is not smaller than 0.02 and not greater than 0.10. | 08-21-2014 |
20140234770 | LIQUID DEVELOPER - A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a volume-based median size not smaller than 0.5 μm and not greater than 3 μm as a whole, and a volume-based coefficient of variation not lower than 40% and not higher than 130%. The plurality of toner particles includes a first toner particle group of the toner particles having a particle size not greater than 1 μm. The number of toner particles constituting the first toner particle group occupies not lower than 20% of the total number of toner particles. The toner particles in the first toner particle group have an average circularity not smaller than 0.945. | 08-21-2014 |
20140242512 | LIQUID DEVELOPER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, LIQUID DEVELOPER CARTRIDGE, AND PROCESS CARTRIDGE - There is provided a liquid developer containing a toner that has a ratio G′ (65)/G′(90) of a storage modulus G′ (65) at 65° C. to a storage modulus G′ (90) at 90° C. of from 1×10 | 08-28-2014 |
20140242513 | LIQUID DEVELOPER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, LIQUID DEVELOPER CARTRIDGE, AND PROCESS CARTRIDGE - There is provided a liquid developer containing a toner that has a ratio G′(65)/G′(90) of a storage modulus G′(65) at 65° C. to a storage modulus G′(90) at 90° C. of from 1×10 to 1×10 | 08-28-2014 |
20140295343 | LIQUID DEVELOPER, METHOD FOR CONTROLLING CHARGING PROPERTIES OF TONER, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, PROCESS CARTRIDGE, AND LIQUID DEVELOPER CARTRIDGE - A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 μC/m | 10-02-2014 |
20150072288 | LIQUID DEVELOPER - A liquid developer is obtained by dispersing toner particles containing a core resin, a shell resin different from the core resin, and a coloring agent in an insulating liquid. The core resin contains a crystalline urethane-modified polyester resin. A solid content of the liquid developer corresponding to a portion of the liquid developer excluding the insulating liquid has a storage elastic modulus at 80° C., not lower than 1×10 | 03-12-2015 |
20160202626 | LIQUID DEVELOPER, DEVELOPER CARTRIDGE, AND IMAGE FORMING APPARATUS | 07-14-2016 |