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Match Document Document Title
8142972 Developer for replenishment and image forming method  
Provided is a developer for replenishment capable of forming a high-quality image even upon duration. The developer for replenishment includes at least a toner and a magnetic carrier, and in the...
8101330 Two component developer and image forming method  
A two component developer comprising a toner and a carrier, wherein the toner includes: colored particles; and external additive particles comprising a complex oxide incorporating silicon atoms and...
8080357 External additive for toner and method for producing the same  
When being blended particularly in a color toner, a barium titanate external additive for toner enhances the toner fluidity, electrical properties, and other relevant performance; concurrently...
8043781 Toner, two-component developer and image formation device  
A toner comprising a small-particle diameter external additive having a number average particle diameter of 7 to 20 nm, a large-particle diameter external additive having a number average particle...
8039190 Carrier core material for electrophotographic developer, carrier, and electrophotographic developer using the carrier  
A carrier core material for an electrophotographic developer including Li ferrite, maghemite, and Fe3O4, wherein a part thereof is substituted with Mn, Li content is 1 to 2.5% by weight, Mn content...
8026032 Carrier, supplemental developer, developer in image developer, developer feeding apparatus, image forming apparatus and process cartridge  
A carrier for use in an image forming apparatus in which a toner and a carrier are fed to an image developer thereof and an extra developer including the toner and the carrier in the image...
7939233 Magnetic carrier and two-component developer  
A magnetic carrier and a two-component developer are provided which have remedied blank areas, fog after leaving, carrier sticking during running, and image density variations before and after...
7927775 Magnetic carrier and two component developer  
Provided is a magnetic carrier giving a high quality image free of density variation without the occurrence of fogging or carrier adhesion and having excellent dot reproducibility even during...
7862977 Image forming method using trickle developing system, developer used for the same, manufacturing method thereof, and image forming apparatus  
A method to form an image using a trickle developing system, wherein (a) the toner comprises colorant particles with a volume median diameter of 3 to 8 μm having first inorganic particles on ...
7824833 Resin-coated ferrite carrier for electrophotographic developer, its production method, and electrophotographic developer using the resin-coated ferrite carrier  
A spherical resin-coated ferrite carrier for an electrophotographic developer which can maintain a stable resistance and chargeability, a favorable charge rising property because of an excellent...
7769327 Developing device and image forming apparatus having a developing roller with a grooved sleeve  
A developing device includes a developing roller and a blade. The developing roller includes: a developing sleeve which rotates while holding two-component developer composed of toner and magnetic...
7754408 Synthetic carriers  
A carrier includes at least one magnetic material and a conductive material. The conductive material is at least one carbon nanotube. A developer includes a toner and the carrier.
7632620 Coated carrier  
A carrier comprised of a core, and thereover a polymer coating containing a first polymer and a silicone resin, and which resin possesses an average diameter of from about 300 to about 3,000...
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...
7577377 Developing device, process cartridge and image forming apparatus including the same  
In a developing device of the present invention, the ratio of the volume of a two-ingredient type developer to the capacity of a space storing the developer is selected to range from 40% to 75%. A...
7574164 Developing device and electrophotographic apparatus using the same  
An electrophotographic apparatus includes: a photoconductor; and two developing rollers facing the photoconductor. A developer fed out from between the two developing rollers is supplied to the...
7553597 Carrier core material, coated carrier, and two-component developing agent for electrophotography  
A carrier core material containing at least one metal oxide (MLO) having a melting point of not higher than 1000° C. and at least one metal oxide (MHO) having a melting point of not lower than ...
7547497 Toner, and developer, image developer and image forming apparatus using the toner  
A toner which is negatively charged to develop an electrostatic latent image is provided that contains a colorant; and a binder resin, wherein the toner has an acid value of from 5 to 20 mg KOH/g...
7482104 Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same  
An image forming method, includes: forming a latent electrostatic image on a latent electrostatic image carrier; developing the latent electrostatic image with a toner to thereby form a visible...
7459254 Toner and two-component developer  
Toner includes aggregated and associated particles formed by mixing in an aqueous medium at least a resin particle dispersion in which resin particles are dispersed, a colorant particle dispersion...
7452649 Magnetic toner, and image forming method  
A magnetic toner is provided having at last a binder resin and a magnetic material and having a weight-average particle diameter of 3 μm to 10 μm. The magnetic material has been surface-treated w...
7442483 Ferrite carrier for electrophotographic developer and method for preparing the same, and electrophotographic developer using the same  
A ferrite carrier for the electrophotographic developer containing 40 to 500 ppm of zirconium; a method for preparing a ferrite carrier for the electrophotographic developer, comprising the steps...
7320852 Carrier for developer for developing electrostatic latent image, developer using same and image forming method using same  
A carrier for use with a toner as a two-component type developer for developing an electrostatic image, comprising spherical magnetic core particles, and a resin layer covering each of said core...
7288355 Carrier for electrophotography developers, developer prepared by using the carrier and method for forming image  
Provided are a carrier for electrophotography developers prepared by generating a slight amount of byproducts such as water, alcohol, etc, which carrier is free from release of a magnetic powder,...
6936394 Replenishing developer and developing method  
An electrostatic latent image on an image-bearing member is developed with a two-component developer comprising a toner and a carrier stored in a developer vessel while supplying as required a...
6841327 Developing assembly, image-forming apparatus and process cartridge  
In a developing assembly including a two-component developer container and a developer-carrying member, the developer-carrying member has at least a substrate and a resin coat layer formed on the...
6740461 Carrier and two-component developer for electrophotography  
A carrier is composed of carrier particles, each carrier particle having a core particle containing at least a magnetic material and a surface coating layer provided on the core particle containing...
6677098 Developer composition for non-interactive magnetic brush development  
An electrographic, two-component dry developer composition including charged toner particles and oppositely charged carrier particles which (a) includes: an combination of a soft magnetic material...
6650858 Developing apparatus featuring first and second developing systems  
A developing apparatus includes a first developing system for developing a latent image formed on an image bearing member with a first developer including magnetic toner. The first developing...
6589703 Electrographic methods using hard magnetic carrier particles  
Disclosed are methods and apparatus for electrographic development which utilize a rotating magnetic core, a toner shell disposed around the rotating magnetic core, and developer compositions...
6464797 Method of separating electrophotographic carrier compositions and recycling the compositions  
A method for use in two-components electrostatic image developers is disclosed, in which secure separation of a carrier coating resinous materials from a core magnetic material is achieved without...
6405007 Magnetic particles for charging, process for producing the magnetic particles, and charging member, process cartridge and image-forming apparatus which have the magnetic particles  
Magnetic particles for charging an image-bearing member electrostatically. The charging magnetic particles have magnetic particles, first surface coat layers containing a first surface coating...
6326118 Surface alloyed cores for electrostatographic carriers and developers  
A carrier and developer material for use in an electrostatographic imaging process comprises a metallic core material which has a diffusion-bonded surface alloy layer on the surface of the particle...
6177221 Carrier and developer providing offset lithography print quality  
A carrier for a developer composition includes a steel core having a shape factor of 6 or more coated with a coating at a coating weight of from 0.1 to 3.0% by weight of a total core weight. The...
6165663 Magnetic coated carrier two-component type developer and developing method  
A magnetic coated carrier suitable for constituting a two-component type developer for use in electrophotography is composed of magnetic coated carrier particles comprising magnetic coated carrier...
6134413 Carrier for magnetic developer and method of electrophotographically forming visual image  
A magnetic carrier for a developer used in electrostatically forming a visual image, comprising a magnetic core material, an electrically-conductive particle-containing resin layer and...
6103437 Magnetic toner particles comprising magnetite particles containing silicon  
Magnetite particles of the present invention have an average particle diameter of 0.05 to 0.50 μm, each of the magnetite particles having a plurality of mountain-shaped protrusions with ...
6051352 Carrier for developing electrostatic image, developer and developing method  
A carrier for developing an electrostatic latent image is disclosed. The carrier comprises a magnetite core and a resin coated on the magnetite core wherein the magnetite core contains FeO and Fe2...
6007956 Carrier and developer for developing electrostatic latent images  
The present invention relates a carrier comprising: a core particle comprising a binder resin and a first magnetic powder dispersed therein; and a second magnetic powder adhered onto the surface of...
6004715 Toner for developing electrostatic images  
A toner for developing an electrostatic latent image, which includes ground toner particles having physical properties meeting with at least one of the following conditions (a) and (b): (a) the...
5888692 Method for coating carrier particles for use in electrostatic developers  
A method for coating carrier particles for use in electrostatic developers is provided comprising the steps of: bringing the carrier particles to be coated in a vessel equipped with means for...
5849452 developing method using an oscillated electric field and including a specified toner and carrier  
A developing method for developing electrostatic latent images comprising: (a) forming a thin layer of a developer comprising a toner and a carrier on a developer transporting member having a...
5845184 Developing unit having improved toner density control  
A developing apparatus is provided for developing an electrostatic latent image on a latent image carrier by supplying the latent image carrier with a developer. This developing apparatus includes...
5789132 Toner for developing electrostatic images containing fine powder fluidity improver and, one-component developer, and two-component developer, containing this toner  
A toner for developing electrostatic images is comprised of toner particles having a number average particle diameter of from 0.5 μm to 5.0 μm, in which toner particles with a particle diameter o...
5786120 Two component developer  
A two-component magnetic developer containing a magnetic iron carrier and a non-magnetic or magnetic toner. The magnetic iron carrier is non-spherical in its shape and has an average particle size...
5683844 Fibrillated carrier compositions and processes for making and using  
A carrier comprised of a core with a coating thereover comprised of at least one polymer resin and wherein the outer surface of the coated carrier is fibrillated.
5683846 Electrophotographic developer having a specific voltage-dependant index  
The present invention provides an electrophotographic developer comprising a magnetic carrier and a toner, wherein a certain voltage-dependent index Y of the developer and a number proportion X (%)...
5665508 Electrophotography carrier having domains dispersed in a matrix resin with a dispersion assistant interposed  
This invention relates to a developer for electrophotography comprising:a domain resin phase containing specified additives,a matrix resin phase containing specified additives anda dispersion...
5643704 Two-component type developer for developing an electrostatic image  
Disclosed is a two-component developer for developing a electrostatic image comprising a toner particle and a carrier particle comprising a substantially spherical magnetic particle coated with a...
5629119 Magnetic carrier for electrophotographic developing agent  
A two-component binder-type magnetic carrier for developing agent comprising a magnetic powder and a binder resin. The carrier particles contain dispersed therein a release agent of the type of a...
Matches 1 - 50 out of 124 1 2 3 >