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8137879 |
Ferromagnetic nanoparticles with high magnetocrystalline anisotropy for MICR toner applications
A toner including stabilized magnetic single-crystal nanoparticles, wherein the value of the magnetic anisotropy of the magnetic nanoparticles is greater than or equal to 2×104 J/m3. The magnetic ...
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8124306 |
Magnetic toner
The object of the present invention is to provide a magnetic toner enabling an image with high image density and excellent image reproducibility to be obtained, which is excellent in fluidity,...
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8101326 |
Secure document printing method and system
A method and system for printing documents with one or more embedded security features is provided. Security features are embedded in the document by co-printing magnetic and non-magnetic toner on...
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8084174 |
Toner
An object of the present invention is to provide a toner excellent in ability to prevent electrostatic offset and fixation tailing. Provided is a toner including toner particles each containing at...
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8057976 |
Method for producing toner
A toner which can efficiently induce high-frequency magnetic induction heating by Neel relaxation and/or Brown relaxation is provided. A toner including a core particle containing a thermoplastic...
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7939231 |
Magnetic toner
A magnetic toner is disclosed having magnetic toner particles containing a binder resin and a magnetic iron oxide. The magnetic toner has a specific saturation magnetization and a specific residual...
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7906266 |
Magnetic toner
A magnetic toner is disclosed including magnetic toner particles containing at least a binder resin and a magnetic powder. The magnetic powder contains a specific amount of phosphorus elements, and...
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7796926 |
Developing apparatus and electrophotographic image-forming apparatus
A developing apparatus is provided which can suppress a fluctuation in image density in a discontinuous printing mode provided with a pause period. The developing apparatus includes a developer for...
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7740998 |
Positively chargeable developer
A positively chargeable developer is provided which is capable of providing stable image quality without causing any image defect even in long-term use. The developer includes at least positively...
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7666562 |
Image forming media containing reflecting pigment
The invention relates to an image forming media composition including an infrared reflecting pigment. The infrared reflecting pigment may be one that substantially absorbs light in the visible...
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7598011 |
Irregular shaped ferrite carrier and electrophotographic developer using the ferrite carrier
It is contemplated to provide irregular shaped ferrite carrier which has a lower resistance, a high specific surface area, a low specific gravity and a longer operational life, and an...
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7582400 |
Magnetic toner and image forming method using the same
Magnetic toner involves magnetic powder 1 having the particle shape of an octahedron 2 that is a convex polyhedron surrounded by eight triangles as a basis, each of the vertexes and edges of the...
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7560212 |
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...
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7550241 |
Positive chargeable magnetic toner composition
The present invention relates to a magnetic mono-component toner composition with positive charge comprising i) a magnetic toner particle containing a charge control agent with positive charge; ii)...
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7544455 |
Magnetic toner
A magnetic toner having magnetic toner particles each containing at least a binder resin and a magnetic iron oxide particle, in which: when a solution is prepared by dissolving the magnetic iron...
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7537874 |
Toner with high strength magnetite
A toner having a high strength magnetite in an amount of from about 10 to about 40 weight percent, wherein the magnetite includes a material selected from the group consisting of FeO, Fe2O3, Fe3O4,...
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7527907 |
Toner for electrostatic latent image development and method of magnetic monocomponent development
The present invention provides a toner for electrostatic latent image development and a method of magnetic monocomponent development using the toner which can prevent the toner adhesion to a...
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7439003 |
Magnetic black toner for electrophotography having Mn-containing hematite compound and magnetic two-component developer for electrophotography containing the same
A magnetic black toner for electrophotography comprising a binding resin, a magnetic substance, and a pigment, wherein the pigment is at least one of phthalocyanine pigment and Mn containing...
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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...
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7252915 |
Magnetic mono-component toner composition
The present invention relates to a magnetic mono-component toner composition, and more particularly to a mono-component toner composition that comprises magnetic toner particle comprising a binder...
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7208252 |
Magnetic toner and conductive developer compositions
Magnetic toner compositions, conductive developer compositions, and methods for producing images in a hybrid jumping development system, more specifically, in a magnetic ink character recognition...
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7144626 |
Magnetic iron oxide particles and magnetic toner using the same
There are provided magnetic iron oxide particles having an average particle diameter (Dp50) of primary particles of 0.05 to 0.3 μm, an average particle diameter (Da50) of secondary particles of ...
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7122286 |
Toner for development of electrostatic latent images, method of forming images, image formation apparatus, toner container containing the toner therein, and image formation apparatus equipped with the toner container
A toner for developing a latent electrostatic image to a toner image, including a binder resin, and a magnetic material which is blackened by coating the surface of a magnetic powder with a...
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7123862 |
Image forming apparatus
In an image forming apparatus having at least an amorphous silicon photosensitive member, a magnetic toner developing means and a color developer developing means, the magnetic toner has a...
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7070895 |
Magnetic toner composition having superior electrification homogeneity
The present invention relates to a magnetic toner composition, and more particularly to a magnetic toner composition having an improved chargeability and excellent uniform chargeability, and that...
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7043175 |
Image forming method and apparatus
In an image forming system, an image-bearing member having a photoconductor layer comprising an Si-based non-single crystal material is charged at a relatively low potential of 250 to 600 volts by...
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6953504 |
Black pigment powder having a low value of magnetization, process for producing the same, and applications thereof
A black pigment powder having a low value of magnetization according to the present invention is characterized in that it consists of a composite oxide containing Fe2TiO4 as a main component,...
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6875549 |
Dry toner, toner production process, image forming method and process cartridge
A toner showing a high transferability and suitable for use in cleanerless image forming system is formed of toner particles comprising at least a binder resin and magnetic iron oxide. The toner is...
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6858365 |
Toner for developing electrostatic latent image, developing method and developing apparatus
A toner, a developing method and apparatus is provided to satisfy both the low temperature fixation property and the hot offset property and that has a wide range of fixing temperature. The toner...
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6806010 |
Toner containing magnetite particles
The invention relates to a toner containing low-silicon magnetite particles.
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6803164 |
Magnetic black toner
A magnetic black toner comprising magnetic black toner particles containing at least a binder resin and a magnetic material. The toner has a weight-average particle diameter of from 5 μm to 12 ...
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6764797 |
Toner for MICR
A toner for MICR comprises at least a binder resin, magnetite particles comprising a mixture of granular magnetite and acicular magnetite, and a wax, wherein a ratio by weight of said acicular...
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6756170 |
Electrostatic image developing toner and image-forming method using the same
An electrostatic image developing toner comprising at least a binder resin and a releasant, wherein the binder resin comprises a petroleum resin and a styrene-based copolymer or styrene-based...
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6733940 |
Toner for magnetic ink character recognition system and non-magnetic monocomponent development method
The present invention provides a toner for MICR suitable for use in a printer for a non-magnetic monocomponent developing system, which does not produce scratches on a developing sleeve when used...
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6677093 |
Electrophotographic black toner, electrophotographic developer and image forming method
An electrophotographic black toner comprising a colorant and a binder resin, wherein the toner has a metal oxide as the colorant of 20% by weight or less, said metal oxide having magnetization of...
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6670086 |
Coupled alcohol ethoxylates for improved thermal properties
Coupled alcohol ethoxylates made by reacting alcohol ethoxylates with a diisocyanate have been found to improve the thermal properties of toner compositions and powder coatings. The alcohol...
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6656658 |
Magnetite toner processes
A toner process comprising heating an acidified dispersion of an acicular magnetite, a carbon black colorant dispersion, an optional wax dispersion, and an acicular latex.
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6653037 |
Toner for developing latent electrostatic images, and image forming method and device
A toner for developing latent electrostatic images is provided which contains, in a binder resin, at least a coloring agent formed from a metal material. A saturation magnetization of the toner is...
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6653036 |
Magnetic toner and image forming method
A magnetic toner includes a magnetic toner particle containing a binding resin and a magnetic material. The magnetic material includes a magnetic iron oxide containing 0.10% to 4.00% by weight of...
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6638675 |
Black magnetic toner
Black magnetic toner comprising: a binder resin, andblack magnetic composite particles comprising:magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 μm;a coating ...
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6589701 |
Dry toner, image forming method and process cartridge
A dry magnetic toner is formed of magnetic toner particles comprising a binder resin and magnetic iron oxide particles. The magnetic toner is provided with excellent developing performances and...
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6562533 |
Magnetites and their use in producing toners
This invention relates to magnetite particles with a mean particle size of 0.1 to 0.3 μm, a specific surface area of 6 to 9 m2/g, a coercive force of 80 to 110 Oe, a residual magnetization of 13 ...
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6562532 |
Black magnetic toner and black magnetic composite particles therefor
Black magnetic toner comprising: a binder resin; andblack magnetic composite particles having an average particle diameter of 0.06 to 1.0 μm comprising:magnetic iron oxide particles,a coating ...
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6475687 |
Magnetic composite particles for black magnetic toner and black magnetic toner using the same
Magnetic composite particles having an average particle diameter of 0.06 to 1.0 μm and a coercive force value of less than 39.790 kA/m, comprising: magnetic core particles,a coating formed on ...
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6451495 |
Toner and developer compositions with charge enhancing additives
A toner comprised of resin, colorant, and a potassium stearate charge enhancing additive.
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6447968 |
Magnetic toner, process for producing magnetic toner, and image forming method
A magnetic toner for developing an electrostatic latent image has magnetic toner particles containing at least a binder resin, a magnetic powder and a wax component. The magnetic powder has...
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6426169 |
Toner containing azo iron compound
A toner having a stable chargeability in various environments, a stable fixability over a wide temperature range and a resistance to sticking on an image-bearing member, is formed of a binder...
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6355194 |
Carrier pelletizing processes
A process for the preparation of microsynthetic carrier comprising the melting of a mixture of binder resin, magnetic component, colorant and optionally charge control additive, thereby forming a...
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6258501 |
Developing agent and image forming apparatus
Disclosed is a two-component developing agent comprising toner which includes a second magnetic powder added in an amount of 4 wt % or less with respect to the weight of toner particles which...
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6183925 |
Two component developer comprising specific magnetic toner and specific magnetic carrier
This invention provides a two-component developer comprising magnetic carrier particles and toner particles which contain magnetic particles at a specified content, being excellent in high speed...
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