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| Number | Title | Issue Date |
| 8187780 | Toner compositions and processes Environmentally friendly toner particles are provided which may, in embodiments, include a biodegradable semi-crystalline polyester resin and a biodegradable amorphous polyester resin. ... | 05/29/2012 |
| 8182973 | Electrostatic-image-developing toner, process for producing electrostatic-image-developing toner, electrostatic image developer, image-forming method, and image-forming apparatus An electrostatic-image-developing toner is obtained by aggregating: resin particles, each of which has a core-shell structure, in which a difference in glass transition temperature between a resin constituting the core and a resin constituting the shell is about 20Â... | 05/22/2012 |
| 8105744 | Image forming method and image forming apparatus An image forming method includes forming an electrostatic latent image on a surface of a latent image carrier; developing the electrostatic latent image with a developing agent including a toner to form a toner image; transferring the toner image onto a surface of a... | 01/31/2012 |
| 8088544 | Core-shell polymer nanoparticles and method of making emulsion aggregation particles using same Nano-sized particles for use in making emulsion aggregation toner particles have a core portion and a shell portion, wherein the core portion of the nano-sized particles includes crystalline resin and the shell portion includes amorphous resin and is substantially t... | 01/03/2012 |
| 8084180 | Toner compositions Toner particles are provided which may, in embodiments, include a core possessing at least one polyester resin in combination with a colorant, optional wax, and optional other additives, and a shell over the core including a high molecular weight amorphous polyester... | 12/27/2011 |
| 8067141 | Electrographic carrier, developer, developing method, image forming apparatus, and process cartridge A carrier is provided including a core and a resin layer located overlying the core, wherein the carrier has a weight average particle diameter (Dw) of from 22 to 50 μm, a ratio (Dw/Dp) of the weight average particle diameter (Dw) to a number average particle diame... | 11/29/2011 |
| 8029962 | Developing agent A developing agent including a core containing an amorphous polyester resin and a fatty acid ester based wax, a shell provided on the surface of the core and containing a copolymer of an aromatic vinyl monomer and acrylic acid or an acrylic ester, and a coloring age... | 10/04/2011 |
| 7981584 | Toner compositions Toner particles are provided which may, in embodiments, include a core possessing an amorphous resin and a crystalline resin in combination with a colorant, optional wax, and optional other additives, and a shell over the core including a branched amorphous resin. T... | 07/19/2011 |
| 7932008 | Hybrid toner and method of preparing the same A hybrid toner and a method of preparing the toner are provided. The hybrid toner is of a core-shell type having improved storage characteristics and a toner blocking phenomenon. The toner prevents image contamination caused by dispersion of waxes or colorants onto ... | 04/26/2011 |
| 7892716 | Method of preparing core-shell toner and toner prepared using the method A method of preparing a toner, includes: preparing a core by mixing a polyester resin and a colorant with at least one material selected from the group consisting of a macromonomer having hydrophilic group, hydrophobic group, and at least one reactive functional gro... | 02/22/2011 |
| 7875413 | Capsulated toner having fine particle cycloolefin copolymer resin shell There is provided a capsulated toner which has low-temperature fixing ability, good storage stability, excellent charge stability, high fixing strength to a sheet paper, and low consumption, and is capable of forming a color image of high-definition, high-gloss, and... | 01/25/2011 |
| 7867682 | Toner for developing electrostatic image, and developer, toner container, image forming apparatus and process cartridge using the toner A toner including a core including at least a colorant, a release agent and a first binder resin; and a shell located overlying the core and including at least a second binder resin, wherein the first binder resin includes a polyester resin including a unit obtained... | 01/11/2011 |
| 7862974 | Toner for electrophotography An embodiment may be an electrophotographic toner which comprises at least one toner particle which comprises an inner layer and an outer layer covering the inner layer, wherein a cross-sectional area ratio of the outer layer to the inner layer is 0.05-0.46, and whe... | 01/04/2011 |
| 7858282 | Toner Provided is a toner including toner particles each containing a binder resin, a colorant, and a wax, and inorganic fine particles, the toner having such a characteristic that a temperature-storage elastic modulus curve at a high frequency shows a characteristic chan... | 12/28/2010 |
| 7846634 | Developing agent A developing agent including a toner particle obtained by using a dispersion containing a solvent, a granular mixed compound having a binder resin and a coloring agent dispersed in the solvent, and, as an additive to disperse a compound, a combination of a surfactan... | 12/07/2010 |
| 7846633 | Toner for developing electrostatic image, method for producing the same, developer for developing electrostatic image, and image forming method A toner for developing an electrostatic image, the toner having a core-shell structure, wherein the toner comprises: a colorant; a binder resin; and a filler, and wherein the toner has a flow tester ½ effluent temperature of from 60 to 100° C., and a shell of the ... | 12/07/2010 |
| 7794908 | Toner Provided is magnetic toner including capsule type toner particles each having a surface layer (B) on a surface of a toner base particle (A) containing at least a binder resin (a) mainly formed of a polyester, a magnetic substance, and a wax, in which, the surface la... | 09/14/2010 |
| 7759039 | Toner containing silicate clay particles for improved relative humidity sensitivity Toner particles, preferably emulsion aggregation toner particles, have improved relative humidity sensitivity through inclusion therein of silicate clay particles such as kaolin clay. The toner particles include a binder, preferably an acrylate-containing binder, at... | 07/20/2010 |
| 7745088 | Non-magnetic toner Provided is anon-magnetic toner including toner particles each containing at least a binder resin, a colorant, and a wax component, and an inorganic fine powder, in which: (1) when a temperature in a temperature range of 50 to 80° C. at which a loss tangent (tan δ... | 06/29/2010 |
| 7745087 | Electrostatic image developer, process cartridge, and image forming apparatus An electrostatic image developer contains a toner and a carrier having a resin coating layer formed on the surface of a core material containing a ferrite component, wherein a ratio R1/R2 is from 0.88 to 0.92 where R1 is the resistance value (Ω... | 06/29/2010 |
| 7727696 | Toner compositions A toner having its surface functionalized with alkaline resins is provided, and processes for producing the same. ... | 06/01/2010 |
| 7709174 | Toner, method of preparing the toner, and developer, image forming method, image forming apparatus, and process cartridge using the toner A toner is provided including a colorant; a first binder resin; and a second binder resin, wherein an amount of the first binder resin and an amount of the second binder resin are phase separated from each other in the toner, and wherein a phase of the first binder ... | 05/04/2010 |
| 7695884 | Toner compositions and processes An emulsion aggregation toner including a core and a shell wherein the core includes an amorphous polyester, a wax, a crystalline polyester and an optional colorant and wherein the shell includes an amorphous polyester and a wax and is substantially free of crystall... | 04/13/2010 |
| 7691552 | Toner composition A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same. ... | 04/06/2010 |
| 7662531 | Toner having bumpy surface morphology The toner described herein contains toner particles containing polymer, colorant and cross-linked polymer. The cross-linked polymer is incorporated at least in the shell of the toner particles. Incorporating cross-linked polymer in the shell of the toner particles p... | 02/16/2010 |
| 7575842 | Toner and, developer, toner-containing container, process cartridge, image forming apparatus and image forming method A toner producing method is provided, which comprises preparing toner base particles in an aqueous medium, wherein the toner base particles comprise resin fine particles, and forming a coating layer on the surface of the toner base particles, wherein the coating lay... | 08/18/2009 |
| 7569321 | Toner compositions Single component toners having a core with a first latex having a specific glass transition temperature and molecular weight, further having a shell surrounding the core with a second latex having a specific glass transition temperature and molecular weight, and add... | 08/04/2009 |
| 7550242 | Toner, toner manufacturing method, developer, image forming apparatus, and process cartridge for the image forming apparatus A toner having a core containing a colorant, a release agent and a binder resin (A), and a shell containing a binder resin (B), the shell overlying the core, wherein the binder resin (A) contains a resin having a polyester skeleton, the binder resin (B) contains a v... | 06/23/2009 |
| 7517628 | Manufacturing method of electrostatic charge image developing toner, and electrostatic charge image developing toner Disclosed is a toner having a core/shell structure and including a hydrophilic resin and a hydrophobic resin, and a manufacturing method thereof. ... | 04/14/2009 |
| 7476481 | Electrostatic charge image developing toner and production process for the same An electrostatic charge image developing toner comprises core particles formed by flocculating and fusion-bonding at least polyester resin particles containing wax and colorant particles, and a coating layer containing a resin formed over the core particles. ... | 01/13/2009 |
| 7435521 | Toner for developing electrostatic image A toner for developing an electrostatic image which has a small particle size essential for attaining a high-quality image, and can output a high-quality image excellent in frictional charging property and free from scumming. The toner for developing an electrostati... | 10/14/2008 |
| 7425398 | Sulfonated polyester toner A toner of a sulfonated polyester resin and at least one colorant is made to contain from about 0.01% by weigh to about 3% by weight of dry toner in total of lithium, sodium, zinc and calcium. The sulfonated polyester resin may be an alkali metal sulfonated polyeste... | 09/16/2008 |
| 7419754 | Particle having conductive polymer surface additive Particles, preferably toner particles comprised of at least binder and colorant, are described that include a doped conductive polymer material as a surface additive on the external surface of the particle. The presence of the doped external conductive polymer mater... | 09/02/2008 |
| 7416827 | Ultra low melt toners having surface crosslinking Ultra low melt toner compositions with improved non-additive heat cohesion are disclosed. These toner compositions include toner particles comprising amorphous resins containing at least one unsaturated moiety, and when the toner particles are surface treated with a... | 08/26/2008 |
| 7413841 | Toner, process for producing the same, two-component developing agent and method of image formation Toner includes aggregated particles including at least resin particles, pigment particles, and wax particles. A fused film of the resin is formed on the surface of the toner. The wax is at least one selected from A: ester wax that has an iodine value of not more tha... | 08/19/2008 |
| 7396628 | Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus Provided is a toner for electrostatic charge image developing, comprising a core layer which contains a first binder resin and a coloring agent, and a shell layer which contains a second binder resin and covers the core layer, characterized in that the following equ... | 07/08/2008 |
| 7393912 | Polyhydroxyalkanoate containing amide group, sulfonic group, and sulfonate ester group, method for producing the same, and charge control agent, toner, image forming method, and image forming apparatus A polyhydroxyalkanoate containing in a molecule at least one unit represented by the chemical formula (1). The polyhydroxyalkanoate is a biodegradable plastic with enhanced melt-processability and exhibits excellent charging stability, high chargeability, and enhanc... | 07/01/2008 |
| 7390606 | Emulsion aggregation toner incorporating aluminized silica as a coagulating agent The toner includes emulsion aggregation toner particles having a core and a shell. The core includes binder including a first non-crosslinked styrene acrylate polymer and a crosslinked styrene acrylate polymer, at least one colorant, at least one wax, and aluminized... | 06/24/2008 |
| 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 cation with tri- or more-valence with the acid group; and reacting at lea... | 06/10/2008 |
| 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 |
