Patent application number | Description | Published |
20090004591 | ELECTROSTATIC IMAGE DEVELOPING TONER AND METHOD FOR PRODUCING THE SAME - Disclosed is a toner for developing electrostatic image containing toner particles prepared with a method containing a step of: coagulating resin particle A, resin particle B and a colorant, wherein resin particle A and resin particle B respectively have volume average particle diameters D | 01-01-2009 |
20090086308 | IMAGE DISPLAY DEVICE - Disclosed is an image display device comprising: (i) a pair of substrates facing each other, provided that one of the substrates is transparent; and (ii) charged particles placed in a gap between the substrates, wherein each of the substrates has a layer containing a compound having a silicone structure in the molecule on a surface of the substrates faced with another electrode. | 04-02-2009 |
20090141337 | WHITE PARTICLES FOR IMAGE DISPLAY DEVICE - Disclosed are white particles for an image display device which includes: (i) a pair of substrates facing each other, provided that at least one of the substrates is transparent; and (ii) the white particles enclosed in a gap between the substrates, with which an image is displayed through migration of the white particles by generating an electric field between the substrates, wherein each of the white particles contains: (a) a core particles containing an inorganic oxide having a refractive index of 2.0 or more in an amount of 80 to 99 weight % based on the total weight of the core particle; and (b) a resin layer having a thickness of 10 to 1000 nm on a surface of the core particle. | 06-04-2009 |
20090142684 | Toner - Disclosed is a toner which can be charged at a designated level even when a lot of print is carried out with severity of charging by stirring and when the printing is carried out under the low temperature-low humidity or the high temperature-high humidity condition. A toner comprising (a) a particle comprising a resin and a colorant; and (b) a titanate compound on the surface of the particle, in which the titanate compound contains iron in an amount of from 100 ppm to 1,000 ppm. | 06-04-2009 |
20090153945 | IMAGE DISPLAY DEVICE - An image display device comprising: (i) a pair of substrates facing each other; and (ii) particles placed in a gap between the substrates, wherein at least one of the substrates is a resin substrate which is transparent and exhibits a light transmittance of 50% or more at a wavelength of 300 nm. | 06-18-2009 |
20090189851 | Image Display Medium, Preparation Method Thereof - An image display medium is disclosed, which medium includes a pair of substrates each having an electrode and colored particles between the pair of substrates, and the colored particles have an absolute electric charge of 0.5 to 4.0 μC/g. | 07-30-2009 |
20090251764 | IMAGE DISPLAY DEVICE - An image display device | 10-08-2009 |
20100207868 | DISPLAY PARTICLES FOR IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - Display particles that are used for an image display apparatus in which the display particles are sealed between two substrates at least one of which is transparent, and by generating an electric field between the substrates, the display particles are moved so that an image is displayed, wherein the display particles include positively chargeable display particles and negatively chargeable display particles, and the positively chargeable display particles and the negatively chargeable display particles are formed by allowing inorganic fine particles made of the same constituent materials to be adhered to the surfaces of base particles, and an image display apparatus provided with the display particles. | 08-19-2010 |
20100208330 | IMAGE DISPLAY APPARATUS - An image display apparatus comprising two substrates at least one of which is transparent, ribs for maintaining a distance between the substrates and display particles that are sealed between the substrates in a powder state, and displaying an image by generating an electric field between the substrates so that the display particles are moved, | 08-19-2010 |
20100302622 | DISPLAY PARTICLES FOR IMAGE DISPLAY DEVICE AND IMAGE DISPLAY DEVICE INSTALLED WITH THE SAME - Display particles for use in image display devices with display particles sealed in a powdery form in the space between two substrates, at least one of which is transparent, that display an image while the display particles are moved as electric field is generated between the substrates, characterized in that the display particles contain at least base particles containing at least a resin and a colorant and inorganic fine particles added to the base particle; externally and a separation amount A of the inorganic fine particles having a primary particle size of 5 to 60 nm separated from the display particles when the particles are provided with an ultrasonic energy of 60 μA for 1 minute in aqueous polyoxyethylphenylether solution is 0.1 to 2.5 wt % with respect to the base particles, and an image display device installed with the display particles for image display devices. | 12-02-2010 |
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 |
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 |
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 |
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 |
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 |
20140220488 | IMAGE FORMING METHOD - Provided is an image forming method, in which excellent cleaning properties are obtained for a long period of time even when the process is employed to an image forming apparatus with a charging roller for charging a photoreceptor, and a favorable image can be formed while inhibiting occurrence of a black spots-like image defect even in a high temperature and high humidity environment. In the image forming method, charging of a photoreceptor in a charging step is performed by a charging roller. A toner for electrostatic image development includes toner base particles added with an external additive. The external additive contains at least first external additive particles composed of a polytetrafluoroethylene and second external additive particles composed of at least one selected from a fatty acid metal salt and an amide wax. The number average molecular weight of the polytetrafluoroethylene constituting the first external additive particles is 500 to 20,000, and the second external additive particles are added in a ratio of 0.01 to 0.5 parts by mass per 100 parts by mass of the toner base particles. | 08-07-2014 |
20140349228 | ELECTROSTATIC LATENT IMAGE DEVELOPING TONER, PRODUCTION METHOD OF THE TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT AND ELECTROPHOTOGRAPHIC IMAGE FORMATION METHOD - A toner for electrostatic latent image development of the present invention includes toner particles containing toner mother particles and an external additive. The external additive contains fatty acid metal salt particles, and a volume based particle diameter (size) distribution of the fatty acid metal salt particles has two peaks on a side of smaller size and a side of larger size, respectively. A volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of smaller size is 3.0 μm or smaller and a volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of larger size is larger than a volume based mean particle diameter of the toner mother particles. | 11-27-2014 |