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7524600 Electrophotographic toner  
Provided is a toner not undergoing the effect of change of temperature and humidity, with high charging stability and having good fixing property and releasability. This is an electrophotographic...
7514190 Method for forming an electrophotographic image  
An electrophotographic image forming method is disclosed, which includes the steps of developing an electrostatic image on a electrophotographic photoreceptor by a developer, transferring a toner...
7501218 Electrostatographic toner containing organometallic dimethyl sulfoxide complex charge control agent  
The present invention is an electrostatographic toner that includes an organometallic complex of dimethyl sulfoxide with a metal salt as a charge control agent having the structure; (M+n)x...
7482106 Image forming method and image forming apparatus  
An image forming method comprising steps of forming a toner image by developing by a toner a latent image on a photoreceptor comprised of a layer formed on a substrate, transferring the toner...
7479360 Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the toner  
The charge control agent comprises aggregate particles including an azo-type iron complex salt represented by the following chemical formula [VI] (in the chemical formula [VI], B+ is (H+)x(Na+)...
7452645 Toner for developing electrostatic image, method for producing the same, developer, image forming apparatus, process cartridge, and image forming method  
A toner is disclosed, for developing electrostatic images by means of image forming apparatuses, that comprises toner particles, and an external additive, wherein the toner particles comprise a...
7449273 Toner containing unsaturated polyester in binder resin, method for preparing the toner, and developer including the toner  
A toner including a binder resin comprising a polyester resin in an amount of from 50 to 100% by weight, wherein the polyester resin includes an unsaturated polyester resin which is preferably a...
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...
7402368 Hydrophobic inorganic fine particles, hydrophobic inorganic fine particles production process, and toner  
Hydrophobic inorganic fine particles characterized by being a mixture of at least small-particle-diameter inorganic fine particles having an average primary particle diameter of 5 to 25 nm and...
7399567 Toner for electrostatic latent image development, electrostatic latent image developer containing the toner, and image formation method using the developer  
A toner for electrostatic latent image development containing at least a binder resin and a colorant, wherein [Fe]/[C] satisfies the following formula (1) where [C] indicates the carbon content...
7390603 Image forming apparatus and toner  
The present invention provides An image forming apparatus having: a negatively chargeable spherical toner; an latent image carrier; a charging member for charging a surface of the latent image...
7390604 Negatively chargeable spherical toner, color image forming apparatus, and process for producing negatively chargeable spherical toner  
The present invention provides a negatively chargeable spherical toner having: a toner mother particle having a binder resin and a colorant, which has: a number average particle size of from 4.5...
7387670 Pigment preparations based on phthalocyanine pigments  
A pigment preparation comprising at least one copper phthalocyanine pigment from the group of C.I. Pigment Blue 15, 15:0, 15:1,15:2, 15:3, 15:4, and 15:6, and at least one pigment dispersant of...
7384722 Method for preparing functional particulate organic material, toner using the functional particulate organic material, and image forming method and apparatus using the toner  
A method for preparing a functional particulate organic material, including providing a suspension of a particulate organic material having an acid group on a surface thereof; reacting a metal...
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...
7354688 Toner compositions with surface additives  
A toner composition includes a binder, a colorant, and a surface additive package including a polydimethylsiloxane surface treated silica, a surface treated titania, and calcium sterate. The toner...
7354687 Dry toner blended with wax  
Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic...
7344813 Emulsion aggregation toner having gloss enhancement and toner release  
A toner includes particles of a resin, an optional colorant, a first wax and a second wax, where the toner particles are prepared by an emulsion aggregation process. Additional waxes can also be...
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...
7318987 Dry toner comprising entrained wax  
Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic...
7314696 Electrophotographic toner and development process with improved charge to mass stability  
Toners and developers are disclosed. The toner of the present invention contains at least one toner resin, at least one charge control agent, at least one surface treatment agent, and optionally...
7312010 Particle external surface additive compositions  
A toner having at least one binder, at least one colorant and external additives. The external additives include at least one of silica and titania, and at least two metal stearates. A developer...
7312009 Color toner having low contamination of charging elements  
The present invention relates to a non-magnetic mono-component toner comprising a toner mother particle, and a coating layer formed on the mother particle where the coating layer comprises fatty...
7306886 Dry toner comprising wax  
Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic...
7300734 Toner compositions  
A toner composition comprising a binder, colorant, and a charge control surface additive mixture comprising a mixture of a first titanium dioxide possessing a first conductivity and a second...
7300736 Toner, and developer, image forming method, image forming apparatus and process cartridge using the toner  
A toner contains: (A) a binder resin; (B) a colorant; (C) a charge controlling agent; and (D) an additive. (A) contains: a polyester resin containing no tetrahydrofuran-insoluble component; and...
7288352 Toner compositions with surface additives  
A toner composition including a binder, a colorant, and a surface additive package including a surface treated silica, a surface treated titania, and magnesium stearate.
7276320 Surface particle attachment process, and particles made therefrom  
A method of forming toner particles having surface particles attached thereto includes the steps of aggregating a material of at least one binder material and at least one colorant to produce...
7244537 Toner for developing an electrostatic charge image and method for its production  
To provide a toner for developing an electrostatic charge image, which has a good low temperature fixing property whereby it is useful for an image-forming device of a low temperature heat fixing...
7232632 Color toners and image forming method using the color toners  
A method for forming a full color image including: forming at least yellow, magenta and cyan color toner images on a receiving material to form a full color image thereon; and fixing the full...
7217485 Toner for electrophotography, and image fixing process, image forming process, image forming apparatus and process cartridge using the same  
A toner for electrophotography contains a binder resin, a charge control agent, and a colorant. The colorant is a black iron oxide compound containing 10 to 45% by weight of titanium component...
7208256 Toner for image formation, method of producing the toner, toner container, toner cartridge, process cartridge, and image forming apparatus  
A toner for image formation is provided, which is produced by dispersing in an aqueous solvent a toner composition which includes a composition thermally soluble in an organic solvent and a...
7160662 Electrostatic latent image developing agent and image forming method  
The present invention relates to an image forming method including: a charging step; an electrostatic latent image forming step; a developing step; a transfer step; a fixing step; and a cleaning...
7153353 Carnuba silicone wax  
A carnuba silicone wax which does not contain free silicone oil. This wax is obtained by reacting a silicone compound having a substituent with reactivity to the hydroxyl group in natural carnuba...
7150954 Image forming method and toner for use in the method  
An image forming method, comprising passing a toner image-bearing sheet through a nip defined between two rollers including a heater roller to fix the toner image on the sheet, wherein the toner...
7150953 Developer  
A developer capable of providing an excellent image without causing a charging failure even after a long-term and repeated use contains a toner particle having a binder resin and a colorant, an...
7144628 Spherical silica-titania-based fine particles surface-treated with silane, production process therefor, and external additive for electrostatically charged image developing toner using same  
Spherical silica-titania-based fine particles surface-treated with silane are provided. The fine particles have a titanium atom content of 0.001 to 5% by weight, a frictional electrification with...
7142804 Toner, toner cartridge that holds the toner therein, and image forming apparatus into which the toner cartridge is attached  
A toner is used in an image-forming apparatus that incorporates a toner-collecting member. The toner-collecting member collects residual toner on a surface of an image-bearing body. The toner...
7141185 High conductivity inks with low minimum curing temperatures  
Conductive ink compositions which can be cured to highly conductive metal traces by means of “chemical welding” include additives which reduce the curing temperatures for use with low-temperature...
7135263 Toner  
In a toner having toner particles which have toner base particles having at least a colorant and a binder resin, and an inorganic fine powder; the inorganic fine powder has a primary-particle...
7115349 Toner  
Provided is toner which is excellent in developing property, transferring property, and fixing property, hardly affected by its surrounding, and has good endurance. The toner has a peak...
7083888 External additive for electrostatically charged image developing toner  
An external additive for electrostatically charged image developing toner is provided. The additive includes spherical hydrophobic fine silica particles having primary particles with a particle...
7041420 Emulsion aggregation toner having novel surface morphology properties  
A toner of the invention includes toner particles comprising a styrene acrylate binder and at least one colorant, and wherein the toner particles, in the absence of external additives, have a mean...
6994942 Non-magnetic single-component toner, method of preparing the same, and image forming apparatus using the same  
A non-magnetic single-component toner 8 of the present invention has toner mother particles 8a, and external additives 12 comprising: two hydrophobic silicas 13, 14 of which particle diameters are...
6990306 Developing agent and image forming apparatus  
An image is formed by using in combination a photoreceptor having a surface roughness Rz not larger than 1.0 and a developing agent comprising a toner containing toner particles containing a...
6964835 Toner and image forming method using the toner  
A toner including a at least a binder resin; a colorant; and a zirconium compound including zirconium and at least one of an aromatic oxycarboxylic acid and a salt thereof, wherein the zirconium...
6929894 Toner and fixing method  
A toner is disclosed which is composed of toner particles containing at least a binder resin, a colorant and a wax, and an external additive. The wax has, in its DSC endothermic curve, a maximum...
6929893 Electrostatic image dry toner composition, developer for developing electrostatic latent image and image forming method  
An electrostatic image dry toner composition comprising a binding resin, a colorant, a releasing agent, and two or more kinds of inorganic oxide powders having different volume average primary...
6911289 Toner, method for manufacturing the toner, and image forming method and apparatus using the toner  
A toner including toner particles including a binder resin and a release agent, wherein when the toner is molded into a plate upon application of a pressure of 478 kg/cm2, the toner plate has a...
6838218 Black toner  
A black toner comprises a binder resin and black composite particles having an average particle diameter of 0.005 to 0.30 μm, and comprising: extender pigments as core particles; a gluing...