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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 Fe 2...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 (%)...
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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.
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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 and a dispersion...
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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...
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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...
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5614346 |
Metal oxide- and metal-coated carriers for electrophotography
Carriers for electrophotography, based on magnetic cores coated with metal oxide and with metal or magnetite, and their preparation and their use for electrophotographic two-component developers.
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5593806 |
Two-component developer and image-forming method for which the developer is adapted
A two-component developer suitable for use with an image-forming apparatus which permits the removal and recovery of a toner remaining on a photoconductive drum after the transfer of the toner to a...
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5582951 |
Carrier processes
A process for the preparation of carrier particles which comprises mixing a dispersion of water, submicron magnetic particles, and ionic surfactant with a latex comprised of resin particles...
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5573880 |
Carrier for electrophotography, process for its production, two-component type developer, and image forming method
A carrier for use in electrophotography has carrier particles. The carrier particles each comprise a carrier core particle and a resin for coating the carrier core particle and having a resistivity...
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5567561 |
Coating agents for electrophotography and electrophotography carriers prepared by using them
Coating agents for electrophotography carriers are disclosed which are resistant to wear, peel-off, cracks, and prevent the occurrence of a spent phenomenon, and which possess a durability for a...
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5545501 |
Electrostatographic developer composition
This invention provides an electrostatographic developer composition comprising carrier particles and toner particles with a toner particle size distribution having a volume average particle size...
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5534378 |
Carriers doubly coated with metal oxide and intended for electro-photography
Carriers for electrophotography, based on magnetic cores coated with different metal oxides, have A) a first layer which essentially consists of electrically insulating metal oxide and B) a second...
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5516613 |
Binary developer
A binary developer is composed of a carrier and a magnetic toner. The carrier consists of nonspherically formed magnetic particles having an average diameter of 5 to 100 μm, preferably 5 to 50...
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5496674 |
Particles suitable as carriers for electrophotography
Particles (I) which are suitable as carriers for electrophotography consist of a) a magnetic core and b) a shell of alumina, chromium oxide, molybdenum oxide, tungsten oxide, silica, tin...
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5496673 |
Carrier for developer of electrostatic latent images
A carrier for the developer of electrostatic latent images which is designed to reduce the fouling of the photosensitive member in the developer unit and to lower the volume resistivity of the...
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5442425 |
Developing apparatus
A twin magnetic pole type developing apparatus of the present invention includes a rotatable sleeve enclosing a non-rotatable magnetic member therein. The magnetic member has two magnetic poles of...
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5424160 |
Conductive carrier coatings and processes for the perfection thereof
A carrier composition comprised of a core with a coating thereover comprised of a composite comprised of a conductive aromatic or heteroaromatic polymer comprised of a monomer or monomers selected...
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5422219 |
Method and apparatus for forming toner image
In an image forming method wherein a toner image formed on a photoreceptor by the sequence of a charging step, an imagewise exposure step and a development step is transferred and fixed on a...
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5391451 |
Developer comprising toner composed of specified resin and carrier coated with polyolefinic resin
The present invention relates to a developer for developing electrostatic latent images, which comprises: a toner containing a binder resin being a thermoplastic resin composed of a copolymer of...
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5385801 |
Method of developing electrostatic latent image
This invention relates to a method of developing electrostatic latent images which comprises the steps of; mixing a developer including toners having a mean particle size of 3 to 20 μm and...
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5359147 |
Electrostatic latent image developer
An electrostatic latent image developer is composed of 10 to 70 parts by weight of a magnetic toner including at least a magnetic powder and a resin, the toner having an average particle size of 5...
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5336580 |
Carrier composition for electrophotography
According to the present invention magnetic carrier particles are provided for use in magnetic brush toner-carrier development of electrostatic charge patterns, said particles incorporating finely...
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5318873 |
Electroconductive magnetic carrier, developer using the same and image formation method
An electroconductive magnetic carrier which is composed of basic particles, each of the basic particles comprising a binder resin and a magnetic material dispersed in the binder resin, and an...
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5316882 |
Ferrite green beads and method of producing carrier particles
A green bead composite for the manufacture of magnetic carrier particles for electrophotography is disclosed. The composite comprises a synthetic polyester or polyurethane as the binder for metal...
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5272037 |
Polyolefinic resin-coated uneven carrier
The present invention provides a polyolefinic resin-coated carrier having a rough surface and containing a core material in a quantity of 90 or more % by weight. Said resin-coated layer may contain...
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5260159 |
Developer for full color copy containing light-transmittable toner and resin-coated carrier having pores
This invention relates to a two-component developer for full color copy in the combination of small toner particles which are light-transmittable and composed of a specified resin with carrier...
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5217835 |
Two-component developer for use in dry development of electrostatic pattern
A two-component developer for use in dry development of electrostatic charge pattern, comprising a mixture of magnetic carrier particles and electroscopic toner particles, characterized in that...
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