Patent application number | Description | Published |
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 |
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 |
20100255415 | TONER - The object aims to improve the reproducibility of color and the stability in density of a toner. Disclosed is a toner comprising at least a resin and a colorant, wherein the colorant comprises a compound represented by general formula (1) and a compound represented by general formula (2). [In general formula (1), R | 10-07-2010 |
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 |
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 |
20130142554 | IMAGE FORMING METHOD - An image forming method that can obtain a high fixing strength and reduce the occurrence of a document offset phenomenon is provided. | 06-06-2013 |
20130202336 | IMAGE FORMING METHOD - In an image forming method of wet fixing system, the fixing solution contains an ester compound represented by at least one of general formula (1) and general formula (2) below: | 08-08-2013 |
20130259550 | FIXING SOLUTION AND IMAGE FORMING METHOD - To provide a fixing solution and an image forming method in which faster fixing rate and faster drying rate can be achieved while the amount of fixing solution supplied is reduced and furthermore, a wet feeling in a formed image is reduced and an image having a high fixing strength can be formed | 10-03-2013 |