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WO/2010/013635A1 |
The object aims to improve the reproducibility of color and the stability in concentration of a toner. Disclosed is a toner comprising at least a resin and a coloring agent, wherein the coloring agent comprises a compound represented by ...
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WO/2010/013923A2 |
Provided is a method of preparing a toner. The method includes preparing initial polymer latex, and aggregating solid particles, that is, polymer latex particles, included in the initial polymer latex, wherein the aggregating of the poly...
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WO/2010/010752A1 |
Provided is a toner which shows excellent performances concerning static offset and fixation tailing. A toner comprising toner particles, which at least contain a binder resin, a wax and magnetic iron oxide, and inorganic microparticles...
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WO/2010/011079A2 |
Provided are a toner and a method of preparing the same. The toner includes a binder resin, a coloring agent, and at least one additive, and a storage modulus curve of the toner with respect to temperature has multiple inflection points....
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WO/2010/010971A1 |
Provided is an image-forming method, the method including: forming an electrostatic image on an electrostatic image bearing member which has been charged; developing the electrostatic image to form a toner image; transferring the toner i...
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WO/2010/010889A1 |
Disclosed is a toner which can be improved in both low temperature fixing properties and offset resistance. The toner comprises at least a binder resin and a coloring agent, wherein the binder resin comprises a polyester ionomer resin w...
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WO/2010/011297A1 |
Porous particles comprising a polymer binder and at least one additive distinct from any pore stabilizing compound present in the particle, wherein: the polymer binder comprises a solid compositionally continuous phase having an external...
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WO/2010/007905A1 |
A developing agent for electrophotography is provided which is excellent in the ability to be quickly charged and in charge stability even in a high-temperature high-humidity environment or low-temperature low-humidity environment where ...
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WO/2010/006837A2 |
Process for preparing surface-modified silicon dioxide particles with a mean particle diameter of at most 100 nm, comprising the steps of: a) providing a predispersion b) high-pressure grinding of the predispersion to form a dispersion c...
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WO/2010/007963A1 |
Provided is a full color image forming method wherein high color reproducibility especially on a blue system and a green system can be obtained and an excellent gradation property can be obtained in a full color image to be obtained. Th...
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WO/2010/008007A1 |
Disclosed is a method for producing an electrophotographic toner which has excellent dispersibility of a coloring agent and can significantly improve image density. An electrophotographic toner obtained by the method is also disclosed. ...
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WO/2010/004826A1 |
Disclosed is a toner for electrostatic charge development, which contains a polyester resin as a binder resin and has excellent toner properties including low-temperature fixing properties, blocking resistance and off-set resistance. Al...
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WO/2010/005492A1 |
Treated metal oxide particles include metal oxide particles treated with at least a charge modifying agent. The charge modifying agent is represented by the following formula: An-Zc-Yb-Ar(EW)a, wherein Ar represents an aromatic group, EW...
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WO/2010/001770A1 |
The present invention provides an image forming toner including at least a linear polyester resin (b1) as a binder resin, wherein the linear polyester resin (b1) is obtained by reacting a polyester diol (b11) having a polyhydroxycarboxyl...
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WO/2010/001825A1 |
Provided are a toner and a toner manufacturing method with which high image density and a broad range of color reproduction are obtained, and with which high-quality images are also obtained. The toner is formed from toner particles that...
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WO/2010/001826A1 |
Disclosed is an electrophotographic toner which can be fixed at a low temperature, while having high storage stability. Fixed images formed with the electrophotographic toner are free from tacking. The electrophotographic toner contain...
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WO/2009/157582A1 |
A toner for electrostatic-image development, characterized by comprising toner base particles obtained by subjecting fine particles comprising a binder resin, a charge control agent, and a colorant to a thermal crosslinking treatment in ...
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WO/2009/148687A1 |
Core-shell nanoscale pigment particles include a core organic pigment composition including nanoscale particles of organic pigments, and a shell layer of surface-deposited silica, where the organic pigment particles are selected from azo...
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WO/2009/148146A1 |
Provided are a non-spherical fine resin particle aqueous dispersion having excellent storage stability and processability in terms of aggregation and attachment to other materials, a method for producing said dispersion and a method for ...
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WO/2009/148276A2 |
Provided are a method of forming a toner image and an electrophotographic image forming apparatus including a toner. The method of forming a toner image is performed using a first toner having a yellow color and color coordinate values o...
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WO/2009/145425A2 |
The present invention relates to a toner using a resin insoluble in organic solvents and a preparation method thereof. The disclosed method comprises: (a) dry-milling the insoluble resin to prepare microparticles or wet-dispersing the in...
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WO/2009/145866A1 |
Images produced by electrophotography are often subjected to harsh conditions, such as high temperature and high relative humidity conditions. Prints when subjected to face-to-face stacking under these conditions tend to stick and are di...
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WO/2009/145342A1 |
Provided is a toner that fixes well at low temperatures and makes it possible to obtain high image density without blurring even with long-term use. The toner contains, at least, a binding resin, a colorant, an ester compound, and a low-...
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WO/2009/142726A1 |
The use of electrographic printing to prepare prints which have a desired tactile feel or raised information in a controlled manner by utilizing a developer having toner particle size larger than 18 microns volume average diameter and ca...
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WO/2009/142010A1 |
Disclosed is a process for producing a resin particle having both superior heat-resistant storage properties and superior melting properties to those of conventional resin particles. Specifically disclosed is a process for producing a r...
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WO/2009/142432A2 |
Provided are a toner containing a resin having wax properties and a method of preparing the toner. The toner includes a binder resin into which at least one residue of the group consisting of a C8-C60 higher fatty acid residue and a C8-C...
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WO/2009/142338A1 |
A toner including at least one polyester resin serving as a binder resin, a colorant, a releasing agent, and a fixing aid, wherein the fixing aid includes a fatty acid amide-based compound, and the fatty acid amide-based compound is at l...
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WO/2009/139850A1 |
A method and system for printing adjustable gloss image documents using a variety of toners where some toners have a relatively low melt viscosity and others have a relatively high melt viscosity. These toners are co-printed prior to fix...
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WO/2009/139502A1 |
Hydrophobic inorganic fine particles are provided which prevent a toner from fusing to a photoreceptor or fouling a contact charging member and which enable the toner to be excellent in flowability, electrification characteristics, and d...
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WO/2009/136634A1 |
Provided are a charge controlling agent comprising, as the active ingredient, a metal compound of a cyclic phenol sulfide represented by the general formula (1) (wherein at least one of a plural number of Y’s is a metal atom), and a to...
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WO/2009/126388A1 |
Colorant loaded nanocapsules include a polymeric capsule shell, and a colorant loaded inside the polymeric capsule shell Such colorant loaded nanocapsules can be made by providing colorant particles and a block copolymer having a minor n...
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WO/2009/125856A1 |
An image formation device includes a charging device that charges an image carrier, an exposing device that exposes the image carrier to form an electrostatic image, a developing device that includes a developing agent carrier that carri...
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WO/2009/122687A1 |
Provided are: a toner excellent in low-temperature fixability and nonblocking properties; and a toner binder. The toner binder contains a crystalline resin (A) which has a maximum-peak temperature for heat of fusion (Ta) of 40-100°C, a ...
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WO/2009/122832A1 |
Disclosed is a carrier core for electrophotographic developers, which is of a spherical form, while having excellent strength. The true density and/or apparent density of the carrier core for electrophotographic developers can be control...
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WO/2009/123329A1 |
Disclosed is a toner with excellent transferability, with which the occurrence of blurring is controlled, and that has excellent lasting stability, even when many sheets are printed. At least a silica fine powder is mixed in with the ton...
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WO/2009/119055A1 |
Disclosed are resin particles having a sufficiently narrow particle size distribution, which can be obtained by using a supercritical fluid. Also disclosed is a method for producing resin particles having a sufficiently narrow particle s...
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WO/2009/116746A2 |
The present invention relates to an electrostatic image developing toner and a preparation method thereof. The electrostatic image developing toner is prepared by the method comprising: (1) preparing an inorganic dispersion medium; (2) d...
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WO/2009/113700A1 |
Provided is a two-component developer containing: a magnetic carrier obtained by coating a magnetic core with a resin; and toner, in which: the magnetic core contains at least a ferrite component and at least one kind of an oxide selecte...
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WO/2009/113488A1 |
Disclosed is a capsule-type toner which has excellent low-temperature fixing properties, high offset resistance and excellent electrically charging properties, can form thin characters, fine lines and fine dots, can produce high-quality ...
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WO/2009/110522A1 |
The present invention provides an image of high image quality by using a magnetic carrier coated with a novel coating resin composition. Further, the present invention stably provides a good image which is hardly influenced by environmen...
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WO/2009/107829A1 |
A toner is provided which is excellent in development stability in both a low-temperature, low-humidity environment and a high-temperature, high-humidity environment over a long time period. The toner includes toner particles containing ...
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WO/2009/107683A1 |
Disclosed is a method for emulsifying a substance of interest without using any organic solvent to produce an O/W emulsion and further drying and powderizing the O/W emulsion. Specifically disclosed is a method for producing an O/W emuls...
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WO/2009/107830A1 |
A toner is provided which has satisfactory development stability even when improved in low-temperature fixability, and which can form a high-quality image satisfactory in non-infiltrating performance and color gamut performance. The tone...
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WO/2009/107867A1 |
An arylidene-pyrazolone dye of the following formula (1): wherein R1, R2, R3, R4 and R5 each independently represent a monovalent substituent; n indicates an integer of from 0 to 4; when n is 2 or more, plural R3's may be the same or dif...
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WO/2009/107831A1 |
Disclosed is a toner that can realize good running stability while improving low-temperature fixability and can realize the formation of high-definition images having good anti-blocking properties, low-temperature fixation, gloss propert...
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WO/2009/104571A1 |
Provided are an electrophotographic-photosensitive element and an electrophotographic device, which are used in a high speed/resolution color machine of a positively charging type and which are excellent in dot-reproducibility and gradua...
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WO/2009/104628A1 |
Provided is a method for producing toner, wherein wet coloring resin particles are fed to a rotor-type stirrer having a structure in which stirring vanes secured to a rotation drive shaft penetrating the bottom wall of a stirring tank is...
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WO/2009/104501A1 |
Disclosed is a developing apparatus that, even in a discontinuous printing mode having a rest period, can suppress a fluctuation in image density. The developing apparatus comprises at least a developing agent for developing an electrost...
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WO/2009/093592A1 |
The invention provides a resin composition for electro- photographic toners which can give electrophotographic toners excellent in low-temperature fixing properties and hot-offset resistance and such electrophotographic toners. A resin c...
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WO/2009/091893A1 |
The present invention provides a process for producing a colored toner comprising the steps of: providing a polymer composition comprising at least one polymer wherein the at least one polymer has a softening temperature from about 30°C...
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