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| Number | Title | Issue Date |
| 8187779 | Toner for electrostatic image development A toner for electrostatic image development containing a resin binder and a charge control agent, wherein the resin binder contains a polyester A obtained by polycondensing a carboxylic acid component containing isophthalic acid and/or an ester thereof, and an alcoh... | 05/29/2012 |
| 8158317 | Azo dye compound, coloring composition, ink sheet for thermal transfer recording, thermal transfer recording method, color toner, ink for inkjet, and color filter An azo dye of the following formula: wherein R1, R2, R3, R4 and R6 each independently represent a hydrogen atom or a substituent; and R5 represent a substitu... | 04/17/2012 |
| 8053153 | Toner for developing electrostatic latent image An electrophotographic toner containing a resin and a colorant is disclosed. The colorant is represented by the formula in the formula, M1 is a silicon atom (Si), a germanium atom (Ge) and a tin atom (Sn); Z is i... | 11/08/2011 |
| 7906263 | Color toner for developing electrostatic latent image The color toner for developing electrostatic latent images comprising a colored resin particle containing at least a binder resin, a colorant, a charge control agent and a parting agent, wherein an extracted liquid with water by means of a hot water extraction metho... | 03/15/2011 |
| 7879520 | Toner for developing electrostatic image and image formation process using it A toner for developing an electrostatic image comprises a binding resin for a toner and a charge control agent including an azo-type iron complex salt represented by the following chemical formula (1) (in the chemical formu... | 02/01/2011 |
| 7855041 | Pigment preparation based on an azo pigment The invention relates to a pigment preparation which contains the monoazo pigment of the formula (I) and 0.1% to 40%, preferably 0.5% to 25%, in particular 1.0% to 17.5% of a pigment dispersant, in relation to the weight of... | 12/21/2010 |
| 7833685 | Coloring compound and yellow toner containing the coloring compound Provided are a coloring compound for color toner which satisfies all of solubility in an organic solvent, a color tone, and lightfastness, and does not inhibit the polymerization of a polymerizable monomer when used in a polymerized toner, and a yellow toner using t... | 11/16/2010 |
| 7700252 | Dual pigment toner compositions Dual pigment compositions are provided that include a first pigment based upon a xanthene dye and a second pigment based upon a monoazo dye. The pigment compositions of the present disclosure may be combined with a binder resin to form a toner, in embodiments a mage... | 04/20/2010 |
| 7608373 | Toner for developing electrostatic latent image, developer using the toner, and process cartridge, image forming apparatus and image forming method using the developer A toner is provided containing a parent particulate material, which contains; a first colorant, a second colorant, and a binder resin, wherein the first colorant contains an organi... | 10/27/2009 |
| 7422832 | Magnetic toner Provided is a magnetic toner comprising magnetic toner particles each comprising at least a binder resin and a magnetic iron oxide, the magnetic toner being excellent in developability and environmental stability, and being capable of reducing a toner consumption. A... | 09/09/2008 |
| 7422834 | Electrostatic latent image developing magenta toner, electrostatic latent image developer, toner manufacturing method, and image forming method An electrostatic latent image developing magenta toner includes at least quinacridone pigment, naphthol pigment, and a release agent. Colorant of the toner satisfies conditions (a) and (b): (a) an average primary particle size D50 of a quinacridone pigment represent... | 09/09/2008 |
| 7419541 | Monoazo pigment preparations based on C.I. Pigment Yellow 74 A pigment preparation comprising C.I. Pigment Yellow 74 of formula (I) as base pigment and C.I. Pigment Yellow 62 of formula (II) as pigment dispersant. ... | 09/02/2008 |
| 7413837 | Charge control agent and toner for electrostatic image development containing the same A charge control agent comprises a monoazo metals-compound including a monoazo compound represented by the following formula [I]: and metals of a metallic element or a metalloid coordinating to the monoazo compound. A toner... | 08/19/2008 |
| 7402369 | Mono azo iron complex compound, and charge controlling agent and toner using the same The present invention is to provide a charge controlling agent and negatively chargeable toner that do not contain any toxic metal, are essentially free from the risk of evoking ignition or explosion, and can exhibit a high charge amount and rapid initial increase i... | 07/22/2008 |
| 7399566 | Color toner and developer compositions and processes for making and using such compositions The invention provides novel colored toner and developer compositions containing polymeric colorants. Such compositions may contain poly(oxyalkylene) or poly(alkylester) substituted color chromophores which are attached to relatively long chained ologomers. The colo... | 07/15/2008 |
| 7384472 | Pigment preparations based on PY 155 The invention concerns a pigment preparation based on C.I. Pigment Yellow 155, containing 0.1% to 50% by weight, based on the weight of C.I. Pigment Yellow 155, of at least one pigment dispersant from the group of monoazo or disazo pigments substituted with at least... | 06/10/2008 |
| 7377974 | Use of a pigment preparation based on C.I. pigment yellow 74 The invention relates to the use of pigment preparations comprising C.I. Pigment Yellow 74 as base pigment and one or more pigment dispersants of the formula (I) wherein R1, R2, R3 | 05/27/2008 |
| 7378207 | Magenta toner and production process thereof The invention relates to a magenta toner having magenta-colored resin particles comprising at least a binder resin and a magenta colorant. The magenta pigment is a magenta pigment composed of a combination of C.I. Pigment Red 31 and C.I. Pigment Red 150. ... | 05/27/2008 |
| 7371494 | Magnetic toner and method of manufacturing magnetic toner The present invention provides a magnetic toner which is hardly influenced by an environment, and with which an image with high quality and excellent resolution can be stably even under low humidity. In the magnetic toner of present invention: ... | 05/13/2008 |
| 7371495 | Toner A toner is formed of toner particles including a polyester resin as a principal component, and at least a colorant and a charge control agent, and externally added inorganic fine particles and organic fine particles. The toner has a volume-average diameter of 4 to 1... | 05/13/2008 |
| 7365039 | Morphology controlled olefin polymerization process A catalyst composition, method of formation and process of use in the polymerization of olefin monomers, said composition comprising a catalyst compound, an activator capable of converting said catalyst compound into an active catalyst for addition polymerization, o... | 04/29/2008 |
| 7361441 | Color toner, and full-color image-forming method A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and rang... | 04/22/2008 |
| 7351509 | Toner A toner is disclosed including toner particles containing a binder resin and a colorant. The binder resin contains a vinyl resin. In the high-temperature GPC-RALLS-viscometer analysis of the o-dichlorobenzene-soluble matter of the toner, a weight-average molecular w... | 04/01/2008 |
| 7342062 | Monoazo metal complex compound containing composition and production method thereof Monoazo metal complex compound containing composition, the incidence of skin sensitization in a skin sensitization potential test based on the maximization method of said composition being not more than 20% and method for producing said composition which comprises a... | 03/11/2008 |
| 7341626 | Pigment compositions consisting of organic and inorganic pigments A pigment composition containing one or more, organic yellow pigments selected from the group C.I. Pigment Yellow (213), Pigment Yellow (214) and disazo pigment of the formula (I) and containing one or more inorganic pigmen... | 03/11/2008 |
| 7333744 | Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage A charge apparatus charges by uniformly superimposing an alternate current bias voltage with a fixed frequency over a direct current bias voltage as the charge bias voltage on a photosensitive member. An exposure apparatus exposes the surface of the charged photosen... | 02/19/2008 |
| 7323282 | Dry toner, method for producing dry toner, and method for forming an image The toner having a significantly improved dispersibility of a colorant in toner particles is provided. The present invention provides a dry toner comprising: (i) a binder resin; (ii) a colorant; (iii) at least one of metallophthalocyanine and a metallophthalocyanine... | 01/29/2008 |
| 7320850 | Magenta toner A magenta toner is provided which contains at least a binder resin, a colorant, and a wax, in which a maximum heat-absorption peak temperature as measured using a differential scanning calorimeter, a reflectance at a predetermined wavelength when measured in a powde... | 01/22/2008 |
| 7318863 | Azo pigment preparations for packaging gravure and flexographic printing The invention relates to an azo pigment preparation containing a) at least one azo pigment, b) a resin based on colophonium or modified colophonium with an acid value equal to or higher than 320 mg KOH/g, and c) an ammonium salt of a sulfonated diaryl yellow pigment... | 01/15/2008 |
| 7316882 | Image forming method The present invention provides an image forming method for obtaining excellent color fixed images with a smaller amount of light energy. This image forming method includes the steps of: forming a toner layer of a color toner containing at least a binder resin, a col... | 01/08/2008 |
| 7311769 | Pigment compositions consisting of a yellow disazo pigment and an organic pigment A pigment composition containing a disazo pigment of formula (I) and at least one pigment from the group of organic orange, red and violet pigments ... | 12/25/2007 |
| 7303846 | Electrophotographic toner, process for producing the same, and process for forming image An electrophotographic toner contains at least a binder resin and a colorant, and log10{[Cu]/[C]} satisfies the following equation (1): −5.0≦log10{[Cu]/[C]}≦−3.5 (1) in which, [C] represents a carbon content (%... | 12/04/2007 |
| 7301012 | Azo dye, image-forming coloring composition, ink for ink jet recording, heat-sensitive recording material, color toner and color filter An azo dye comprising a coupler having a specific structure as a coupling component, an image-forming coloring composition comprising the azo dye, an ink for ink jet recording and an ink jet recording method using the image-forming coloring composition and a heat-se... | 11/27/2007 |
| 7300737 | Process for producing toner The present invention provides a toner that exhibits excellent low-temperature fixing properties, offset resistance, and has excellent storage stability in a developing machine. The toner has, in a DSC curve obtained by measuring the toner with differential scanning... | 11/27/2007 |
| 7288348 | Color toner In a color toner having toner particles which have toner base particles containing a binder resin, a colorant and a wax, and inorganic fine particles, (i) in the toner base particles, particles having a circle-equivalent diameter of 3.00 μm or more as measured with... | 10/30/2007 |
| 7288357 | Cyan toner and method of producing cyan toner A cyan toner is provided which is brighter and more greenish in hue than conventional cyan toners and highly translucency. A cyan toner characterized by comprising toner particles at least having a coloring compound represented by the Formula (1): ... | 10/30/2007 |
| 7288351 | Magenta toner for developing electrostatic images, process for production thereof, developer and image-forming method A magenta toner for developing electrostatic images provided which contains a binder resin and a colorant, wherein the colorant includes a mixed crystal of two or more colorants and when a solid patch is fixed on art paper complying with the ISO standard by using th... | 10/30/2007 |
| 7276319 | Toner for electrostatic latent image development and image forming method A toner for electrostatic latent image development includes a coloring agent and a resin wherein the toner is formed by a polymerization method and a content of aromatic amine contained in the toner is 50 ppm or less, and a volume average particle size of the toner ... | 10/02/2007 |
| 7267919 | Toner A toner of the present invention comprises at least a binder resin comprising as a main component a polyester resin, a wax, and a colorant, in which in case of measuring a wettability of the toner with respect to a mixed solvent of methanol and water in terms of an ... | 09/11/2007 |
| 7264910 | Cyan toner and method of producing cyan toner A cyan toner is provided which is brighter and more greenish in hue than conventional cyan toners and highly translucency. A cyan toner characterized by comprising toner particles at least having a coloring compound represented by the Formula (1): ... | 09/04/2007 |
