Patent application number | Description | Published |
20080233507 | TWO COMPONENT DEVELOPER - A two component developer used in an electrophotographic method composed of a toner containing at least a resin and a colorant, and a carrier, is disclosed. The resin is composed of a polyester resin and a styrene-acryl resin, in which the polyester resin is prepared via condensation-polymerization of a polyvalent carboxylic acid and a polyol in a state where a styrene monomer and an acrylate monomer exist in an aqueous medium containing an acidic compound, followed by formation of the styrene-acryl resin via radical polymerization of the styrene monomer and the acrylate monomer; and the carrier comprises magnetic material powder dispersed in a binder resin, and has a volume based median diameter of 10 μm-100 μm, a shape factor SF-1 of 1.0-1.2, and a shape factor SF-2 of 1.1-2.5. | 09-25-2008 |
20080261141 | MAGENTA TONER FOR DEVELOPING ELECTROSTATIC IMAGE - A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner. | 10-23-2008 |
20090068581 | Magenta Toner for Developing Electrostatic Image - A magenta toner for developing an electrostatic image, the magenta toner comprising at least a binder resin and a magenta colorant, wherein the magenta colorant comprises a compound represented by Formula (1), wherein D is represented by one of Formulas (2) to (4): | 03-12-2009 |
20090075192 | Toner - Disclosed is a toner comprising a resin and a colorant, wherein the colorant comprises a compound represented by formula (I) and a compound represented by formula (II). | 03-19-2009 |
20090162776 | Magenta Toner For Developing Electrostatic Image - Disclosed is a magenta toner, which contains magenta colorants composed of compound A represented by Formulas (1), (2) or (3) in an amount of mA and compound B selected from a group consisting of a mono-azo pigment, a naphthol pigment and rhodamine chelate pigment in an amount of mA, and a ratio of amount mA:mB is 90:10 to 55:45. | 06-25-2009 |
20090208863 | ELECTROPHOTOGRAPHIC TONER, ELECTROPHOTOGRAPHIC DEVELOPER AND PRODUCTION METHOD OF ELECTROPHOTOGRAPHIC TONER - An electrophotographic toner which is thermally stable in storage or as an image after being fixed and exhibits a sufficiently low melt viscosity and a high fluidity when heated during fixing is disclosed, comprising a colorant and a binder resin, wherein the binder resin contains a poly-branched resin composition in an amount of 0.5 to 20% by mass. There is also disclosed a method of producing the electrophotographic toner. | 08-20-2009 |
20090214974 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, FULL COLOR TONER KIT, AND IMAGE FORMATION METHOD - Disclosed is a toner for developing an electrostatic image, a full color toner kit comprising the toner and an image formation method employing the a full color toner kit, the toner comprising at least a resin and a colorant, wherein the colorant includes C.I. Pigment Blue 60 having a powder X-ray diffraction peak (2θ) at 6.3±0.2° and 13.0±0.2°. | 08-27-2009 |
20090239164 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, FULL-COLOR TONER KIT AND IMAGE FORMING METHOD - An electrophotographic toner for electrostatic image development which is capable of obtaining a high chroma full-color image exhibiting clear color without color contamination and excellent light stability is disclosed, comprising a resin and a colorant, wherein the colorant comprises a pigment of C.I. Pigment Blue | 09-24-2009 |
20090239168 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, FULL COLOR TONER KIT, AND IMAGE FORMATION METHOD - Disclosed are a toner for developing an electrostatic image, a full color toner kit and an image formation method layer, the toner comprising at least a resin and a colorant, wherein the colorant includes quinacridone pigment having a number average primary particle size of from 30 to 150 nm and having a ratio of a long axis length to a short axis length of from 1.0 to 2.0. | 09-24-2009 |
20090246656 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, FULL-COLOR TONER KIT AND IMAGE FORMING METHOD - An electrophotographic toner for electrostatic image development which is capable of obtaining a high chroma full-color image exhibiting clear color without color contamination and achieving enhanced lightfastness is disclosed, comprising a resin and a colorant, wherein the colorant comprises a pigment of C.I. Pigment Red 209. There are also disclosed a full-color toner kit and an image forming method by use of the toner. | 10-01-2009 |
20090291375 | FULL COLOR IMAGE FORMATION PROCESS - Disclosed is a process of forming a full color image according to electrophotography, employing a yellow toner, a magenta toner and a cyan colorant, the process comprising the step of forming a yellow toner image, a magenta toner image and a cyan toner image on a recording material, wherein the yellow toner image has reflectance (in terms of %) satisfying formulas (11) through (14) below, the magenta toner image has reflectance (in terms of %) satisfying formulas (21) through (24) below, and the cyan toner image has reflectance (in terms of %) satisfying formulas (31) through (34) below. | 11-26-2009 |
20090291376 | FULL-COLOR IMAGE FORMING METHOD - Disclosed is a full-color image forming method by which an image exhibiting comfortable image quality reliably suitable for a human visual system can be obtained in such a way that a halftone image exhibiting excellent granularity and evenness thereof is acquired. | 11-26-2009 |
20100112473 | PRODUCTION METHOD OF TONER, TONER AND DEVELOPER - A preparation method of a toner comprising a binder resin and a colorant is disclosed, comprising forming resin particles containing a resin formed by allowing a styrene monomer, a (meth)acryl monomer and a polymer represented by the formula (1) to react, and mixing the resin particles with colorant particles which were dispersed and allowing the resin particles and the colorant particle to coagulate and fuse to form toner particles, | 05-06-2010 |
20100178606 | TONER - Disclosed is a toner including: a resin; coloring agent and release agent including compound or compounds represented by the following general formula (1): R | 07-15-2010 |
20100302623 | IMAGE DISPLAY APPARATUS - An image display apparatus including: two substrates at least one of which is transparent; and display particles that are sealed between the substrates in a powder state so that by generating an electric field between the substrates, the display particles are moved to display an image; wherein, of contact surfaces with the display particles in a gap between the substrates, both of the surfaces on the substrate sides have oxide layers of the same metal, and the display particles include positively chargeable display particles and negatively chargeable display particles, and both of the positively chargeable display particles and the negatively chargeable display particles have structures obtained by successively forming oxide layers of the same metal as that of the metal oxide layers possessed by the surfaces on the substrate sides and organic layers on the surfaces of base particles that contain at least a resin and a colorant. | 12-02-2010 |
20100321762 | DISPLAY PARTICLES FOR IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS LOADED WITH THE SAME - Display particles having metal oxide layers formed on the surfaces of base particles containing at least a resin and a colorant, wherein the metal oxide layers comprise a polycondensation product formed by using a compound A represented by the following formula (A) and a compound B indicated by the following formula (B) as materials, and an image display apparatus loaded with the display particles: | 12-23-2010 |
20100321763 | DISPLAY PARTICLES FOR IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS LOADED WITH THE SAME - Display particles for an image display apparatus, wherein the image display apparatus comprises two substrates at least one of which is transparent, with the display particles being sealed between the substrates in a powder state, so that by generating an electric field between the substrates, the display particles are moved to display an image, wherein the display particles are formed through processes in which at least a binder resin and a colorant are kneaded and pulverized to give core particles, resin fine particles are fixed and fused on surfaces of the core particles, and then the core particles on which the resin fine particles are fixed and fused are sphered to give an average degree of roundness of 0.960 or more, and wherein a ratio of use of the resin fine particles is set in the range from 100 to 300% in the rate of the total projection area of the resin fine particles relative to the total surface area of the core particles, as well as an image display apparatus loaded with the display particles. | 12-23-2010 |
20100323290 | TONER AND MANUFACTURING METHOD THEREOF - A toner for an electrophotography and its manufacturing method are disclosed. The toner comprises toner particles containing a cross-linked polymer having two-valent crosslinking group represented by Formula (1), | 12-23-2010 |
20110003242 | TONER AND TONER MANUFACTURING METHOD - Disclosed is a toner comprising at least a resin and a coloring agent, wherein the resin comprises toner particles in which a polyester resin unit is cross-linked by a diatomic cross-linking group expressed by a following general formula (1): | 01-06-2011 |
20110008721 | ELECTROPHOTOGRAPHIC TONER - In the present invention, provided is an eleetrophotographic toner in which low temperature fixing is achieved, and high storage stability is obtained without generating tacking with respect to fixed images to be formed. It is a feature that this electrophotogaphic toner possesses at least a binder resin, a colorant and a releasing agent, wherein the releasing agent comprises an ester compound and an aliphatic hydroxycarboxylic acid compound. | 01-13-2011 |
20110033795 | TONER, PRODUCTION METHOD OF TONER, DEVELOPER AND IMAGE FORMATION METHOD - A toner which can be improved in both low-temperature fixability and offset resistance is disclosed, comprising a colorant and a binder resin containing a polyester ionomer resin which has been reacted with a polyvalent isocyanate compound. | 02-10-2011 |
20110070535 | TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT AND IMAGE FORMING METHOD - A toner for electrostatic latent image development is disclosed comprising colored particles containing a binder resin and a colorant and external-additive particles attached to the surfaces of the colored particles, wherein the external-additive particles comprise resin particles covered with an inorganic layer, and the resin particles are bound to the inorganic layer by a siloxane bond. A preparation method of the toner is also disclosed. | 03-24-2011 |
20110081611 | TONER MANUFACTURING METHOD - Disclosed is a toner manufacturing method, comprising: dispersing a polyester resin prepared by condensing a polyol and an unsaturated polycarboxylic acid into an aqueous medium and preparing a polyester resin particle dispersion liquid; adding a vinyl polymerizable monomer and a radical polymerization initiator to the polyester resin particle dispersion liquid to cause a radical polymerization reaction, followed by preparing a dispersion liquid of resin particles made of a resin in which vinyl polymerizable monomers react with the polyester resin; and mixing at least the resin particles made of the resin in which the vinyl polymerizable monomers react with the polyester resin, and a dispersion liquid of coloring agent particles, and forming toner particles by making the resin particles and the coloring agent particles cohere. | 04-07-2011 |
20110091806 | TONER MANUFACTURING METHOD - Disclosed is a toner manufacturing method, comprising: dispersing a polyester resin prepared by condensing a polyol and a polycarboxylic acid into an aqueous medium and adjusting a polyester resin particle dispersion liquid, wherein the polyol includes an unsaturated polyol, or the polycarboxylic acid includes an unsaturated polycarboxylic acid; and adding a radical polymerization initiator to the polyester resin particle dispersion liquid to cause a radical polymerization reaction, and adjusting the obtained dispersion liquid of polyester resin particles. | 04-21-2011 |
20110104604 | TONER AND MANUFACTURING METHOD OF TONER - Disclosed is a manufacturing method of a toner including a vinyl series resin being a polymer of a radical polymerizable monomer, and a coloring agent, the method comprising: dispersing a crystalline organic compound having an unsaturated bond in an aqueous medium to prepare a dispersion liquid of the crystalline organic compound; causing a radical polymerization reaction between an unsaturated bond part of the crystalline organic compound and the radical polymerizable monomer after adding the radical polymerizable monomer to the dispersion liquid of the crystalline organic compound, to prepare a dispersion liquid of resin particles including the obtained polymer; and mixing at least the dispersion liquid of the resin particles and a dispersion liquid of coloring agent particles, and aggregating the resin particles and the coloring agent particles to form toner particles. | 05-05-2011 |
20110123754 | STRUCTURAL COLOR DISPLAY MATERIAL AND PRODUCTION METHOD OF THE SAME - Provided is a structural color display material containing a sheet of substrate having: an adhesive layer on a rear surface of the substrate; and a structural color display layer which contains structural color particles and a matrix and exhibits a structural color on a front surface of the substrate, wherein the front surface of the substrate on which is formed the structural color display layer exhibits a water contact angle of 60 to 100°. | 05-26-2011 |
20110123917 | TONER, DEVELOPER, AND METHOD OF MANUFACTURING TONER - In the present invention, provided is a toner suitable for fixing at low temperature, which exhibits excellent performance against thermal stress as well as mechanical stress with no generation of blocking even during storage for a long duration in an unused state, and also with no generation of tacking of toner images after fixing. Also disclosed is a toner comprising at least a binder resin, a colorant and a wax, the toner comprising a fatty acid ester wax comprising a hydroxyl group, and an aliphatic alcohol. | 05-26-2011 |
20110143275 | PRODUCING METHOD OF WATER DISPERSION OF POLYESTER RESIN PARTICLES, RESIN COMPOSITION, PRODUCING METHOD OF RESIN COMPOSITION AND ELECTROPHOTOGRAPHIC TONER - A method of producing a water dispersion of polyester resin particles containing the steps of: emulsifying and dispersing at least a diol, a dicarboxylic acid and at least one polycondensation catalyst selected from a surfactant catalyst and a rare earth metal catalyst in water to form an emulsified dispersion liquid; and irradiating the emulsified dispersion liquid with a microwave to conduct a polycondensation reaction, whereby polyester resin particles are produced. | 06-16-2011 |
20110177452 | PRODUCTION METHOD OF TONER FOR DEVELOPING ELECTROSTATIC IMAGE - A production method of a toner for developing an electrostatic image composed of toner parent particles and external additives adhered to a surface the toner parent particles is disclosed. The method includes steps of preparing toner parent particles dispersion liquid in which toner parent particles are dispersed in a medium, first mixing the dispersion liquid with a quaternary ammonium salt compound and a water soluble organic solvent to prepare liquid mixture, and second mixing the liquid mixture with external additive dispersion liquid in which negative charged external additives are dispersed. | 07-21-2011 |
20110212398 | TONER FOR DEVELOPING ELECTROSTATIC LATENT IMAGES AND PRODUCTION METHOD OF THE SAME - A toner for developing electrostatic latent images, including a binder resin, and a colorant, wherein the binder resin includes an amorphous resin obtained from a radical polymerizable monomer unit containing a styrene type monomer and a (meth)acrylic ester type monomer and a crystalline resin, and a ratio (Q | 09-01-2011 |
20110223534 | HYDROPHOBILIZATION METHOD FOR PARTICLES - A hydrophobilization method is disclosed, comprising subjecting particles to a hydrophobilizing treatment in an aqueous medium with a hydrophobilizing agent to hydrophobilize surfaces of the particles, wherein the surfaces of the particles are hydrophobilized with the hydrophobilizing agent in the presence of a phase transfer catalyst. | 09-15-2011 |
20110236819 | ELECTROPHOTOGRAPHIC TONER AND PRODUCTION METHOD OF THE SAME - Provided is a toner containing toner particles containing a polyester resin which has a structure part represented by Formula (1): | 09-29-2011 |
20120021353 | METHOD FOR PRODUCING TONER - Disclosed is a method for producing toner, comprising (1) mixing, with an aqueous medium, a resin solution of an organic solvent in which amorphous polyester resin having unsaturated dicarboxylic acid monomer units is dissolved, and forming an amorphous polyester resin particle dispersion; (2) adding a radical polymerization initiator to the amorphous polyester resin particle dispersion obtained in (1), cross-linking the amorphous polyester resin, and forming a cross-linked amorphous polyester resin particle dispersion; and (3) mixing at least the cross-linked amorphous polyester resin particle dispersion obtained in (2), with a crystalline polyester resin particle dispersion, aggregating cross-linked amorphous polyester resin particles and crystalline polyester resin particles, and forming toner particles. | 01-26-2012 |
20120123075 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE AND MANUFACTURING METHOD OF TONER FOR DEVELOPING ELECTROSTATIC IMAGE - Disclosed are a toner for developing an electrostatic image and its manufacturing method, the toner being comprised of toner particles, wherein the toner particles contain as a resin a polymer having a structural unit represented by the following formula 1, | 05-17-2012 |
20120148845 | HEAT STORAGE MICROCAPSULES AND MANUFACTURING METHOD THEREOF - Disclosed are heat storage microcapsules encapsulating a water-soluble heat storage material stably and certainly, heat storage microcapsules with high durability which prevent phase separation of an inorganic salt hydrate latent heat storage material, heat storage microcapsules which prevent supercooling of a latent heat storage material to exhibit stable heat history and a manufacturing method thereof. The heat storage microcapsules comprise a core covered with a shell, wherein the core contains (a) at least one water-soluble latent heat storage material selected from a salt hydrate and a sugar alcohol and (b) a polymer derived from a water-soluble monomer mixture of a water-soluble monofunctional monomer and a water-soluble multifunctional monomer, and the shell is composed of a hydrophobic resin. | 06-14-2012 |
20130078566 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT AND PRODUCTION PROCESS THEREOF - Disclosed are a low-environmental load toner for electrostatic image development and a production process of the toner. | 03-28-2013 |
20130109826 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT | 05-02-2013 |
20140142267 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - A toner for electrostatic image development having sufficient low-temperature fixing properties, and excellent heat resistant storage stability and crush resistance is provided. In toner particles containing at least a binder resin, the binder resin contains a polymer having a structural unit represented by a general formula (1), wherein R | 05-22-2014 |
20140377700 | TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT - Provided is a toner for electrostatic image development, having both sufficient low-temperature fixability and good post-fixing separability simultaneously. The toner for electrostatic image development includes: a second amorphous polyester resin including a structural unit represented by any of the following general formulas (1) to (3); and a first amorphous polyester resin including no structural units represented by the general formulas (1) to (3). | 12-25-2014 |