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5714292 |
Toner comprising calix arene compound
The present invention relates to a toner for developing an electrostatic latent image, comprising a calix arene compound expressed by the following general formula I!: ##STR1## wherein R 1 and R...
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5714294 |
Toner for electrophotography and reinforcing agent for said toner
A toner for electrophotography including a binder resin, a colorant, and a reinforcing agent, the toner being characterized in that the reinforcing agent is resin particles comprising a core layer...
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5712071 |
Toner for developing electrostatic latent image
A toner produced by pulverizing and classifying a melt and kneaded mixture comprising a binder resin, a colorant and an offset preventing agent, said binder resin comprising a styrene-type...
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5705304 |
Photo-removable electrophotographic toners using phenyl isopropenyl ketone
Electrophotographic toners comprising a resin, a colorant, a charge controlling agent and an offset preventing agent. The resin comprises a copolymer containing at least one of phenyl isopropenyl...
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5700616 |
Developer for developing an electrostatic image and image forming method
A developer for developing an electrostatic image has a toner which contains a particulate toner, a particulate silica A and a particulate silica B. The toner has a weight-average particle size of...
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5683847 |
Toner aggregation latex processes
A process comprising: (i) preparing a pigment dispersion, which dispersion is comprised of a pigment, a cationic surfactant, and optionally a charge control agent; (ii) shearing said pigment...
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5679491 |
Toner used for developing an electrostatic charge image
A toner used for developing an electrostatic charge image containing a coloring agent, a quaternary ammonium salt compound and polyolefin is disclosed. The quaternary ammonium salt compound is...
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5674655 |
Electrostatographic toners containing metal oxides
This invention comprises a toner particle comprising a polymeric binder and a metal oxide; wherein the metal oxide is blended throughout the polymeric binder.
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5667929 |
Toner combination
Toners comprised of a mixture of a cyan toner, a magenta toner, a yellow toner, and an optional black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for...
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5648192 |
Electrophotographic toner
There is disclosed a positive charging type electrophotographic toner comprising a fixing resin, and a colorant and an electric charge controlling material, which are contained in the fixing resin,...
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5641602 |
Block copolymer containing binder composition and electro photographic toner composition derived therefrom
Intermediate binder composition for use in toner compositions, comprising (a) a block copolymer comprising one predominantly poly(monovinyl aromatic) block per molecule and one predominantly...
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5627004 |
Processes for producing negatively charged toner
A process for the preparation of negatively charged toner comprising: (i) preparing a pigment dispersion, which dispersion is comprised of a pigment, an ionic surfactant, and optionally a charge...
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5620826 |
Polymer suspension method for producing toner particles
A method is provided for producing dry toner particles comprising the steps of: (i) dissolving at least one organic polymer (toner resin) in a solvent therefor to form a solution, said solvent...
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5604066 |
Toner compositions with organometallic polymers
A toner composition comprised of pigment, and a metallocene polymer. Also illustrated is a toner composition wherein the metallocene polymer is a metallocene polyester of the formula ##STR1##...
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5597674 |
Toner resin composition and toner
A toner resin composition is provided which is superior in anti-offset properties, anti-smearing properties and low temperature fixability, has superior image stability even when the copier is used...
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5589313 |
Method for nonmagnetic monocomponent development
A method for nonmagnetic monocomponent development is intended for use in an electrophotographic copying machine or electrophotographic printer and is capable of producing highly durable prints of...
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5585215 |
Toner compositions
A toner comprised of color pigment and an addition polymer resin, and wherein said resin is generated by emulsion polymerization of from 70 to 85 weight percent of styrene, from about 5 to about 20...
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5576393 |
Polymer particles, method of producing the same, and toner for use in electrophotography comprising the polymer particles
Polymer particles which are substantially spherical and have protrusions on the surface thereof, with such a particle size distribution that the volume mean diameter dv thereof is 1≤dv≤15...
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5567563 |
Toner binder composition and toner composition
Toner binder compositions for electrophotography, comprising a binder resin (A) and an organic material (B) dispersed therein with an average particle size of not more than 5 μm at roan...
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5565298 |
Method of producing toner for developing latent electrostatic images
A method of producing a toner for developing latent electrostatic images is disclosed, which comprises the steps of dispersing resin particles comprising a resin in an organic solvent in which the...
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5561023 |
Toner with ethylene-vinyl acetate copolymer
The present invention provides a toner resin composition and toner which is superior in terms of low temperature fixation and superior anti-offset, anti-aggregation and anti-smearing properties, by...
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5558809 |
Polymer electrets with improved charge stability
The use of additives to produce polymer electrets with improved charge stability. In particular, the invention relates to the use of specific charge control agents used for toners that are blended...
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5554476 |
Toner particles for use in compositions for developing latent electrostatic images and liquid composition using same
A liquid composition for developing latent electrostatic images comprising toner particles associated with a pigment dispersed in a nonpolar liquid. The salient feature of the invention is that the...
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5549998 |
Polymerization process and toner compositions therefrom
Disclosed is a free radical polymerization process for the preparation of a thermoplastic resin or resins comprising heating a mixture of a free radical initiator, a stable free radical agent, and...
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5547798 |
Toner composition and toner with low and high M.W. vinyl polymers
To provide a toner resin composition and toner which has superior anti-offset properties, low temperature fixability and anti-blocking properties, and gives sufficiently stable high-quality images...
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5547796 |
Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder
A developer for developing an electrostatic image is constituted by an insulating magnetic toner, inorganic fine powder and a flowability-improving agent having a BET specific surface area of at...
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5536782 |
Binder for electrophotographic toner
Disclosed is an electrophotographic toner binder which comprises a silicone-grafted copolymer produced by radical copolymerization of an organopolysiloxane compound represented by the following...
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5529873 |
Toner for developing electrostatic images and process for producing toner
A toner for developing electrostatic images which comprises a toner particle produced by polymerizing a polymerizable monomer composition, wherein the toner particle contains 0.1-9.0% by weight...
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5518848 |
Binder resin for toners
A binder resin for high image quality toners used in copying machines and printers by electrophotography which are excellent in anti-offset property, fixing property, blocking resistance, and image...
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5516619 |
Conductive composite particles and processes for the preparation thereof
A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component, and a chain transfer...
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5514509 |
Electrophotographic developer
An electrophotographic developer includes a toner and a carrier, in which the carrier is provided on the surface of a core material thereof with a resin coating layer. The coating layer is made of...
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5514763 |
Styrene/butadiene toner resins with excellent gloss and fix properties
A toner composition includes a styrene/butadiene resin having a weight average molecular weight of less than about 70,000 and a number average molecular weight of from about 8,000 to about 12,000,...
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5514510 |
Binder resin for electrophotographic toner and toner containing the same
The present invention is concerning a binder resin for an electrophotographic toner, which comprises a mixture of polymers comprising styrenic monomer units with or without acrylic or methacrylic...
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5512408 |
Dry toner with gelled resin for high speed printer
A toner for a two component developer used in a high speed computer output printer has about 20 parts gelled styrene/acrylic resin, 40 parts acrylate resin, about 13 parts hydrogenated wood rosin...
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5504272 |
Magnetic toner having defined particle distribution
An image forming method in which a toner-carrying member for carrying a specific magnetic toner is placed adjacent a latent image-bearing member for carrying an electrostatic latent image so as to...
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5501931 |
Toner for flash fixation
Disclosed is a toner for flash fixation which comprises: (i) a resin containing (a) a low molecular weight compound having the peak of molecular weight in 3,000 to 60,000 by gel permeation...
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5500321 |
Color toner for developing electrostatic image
A color toner for developing electrostatic images is formed of color toner particles each including a binder resin, a polyalkylene, and a colorant. The color toner particles are formed by...
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5496676 |
Toner aggregation processes
A process comprising: (i) preparing a pigment dispersion comprised of pigment, ionic surfactant, and optional charge control agent; (ii) mixing at least two resins in the form of latexes,...
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5494964 |
Polyesters based on hydroxyl-containing prepolymers of olefinically unsaturated monomers and their use as binders for electrophotographic toners
Polyester resins suitable as binders for electrophotographic toners and for acceptor layers for the thermal diffusion printing process based on hydroxyl-containing prepolymers of olefinically...
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5483016 |
Method for producing binder resin and toner for electrophotography using the binder resin
The method of producing a binder resin has the steps of blending in advance (a) a starting material monomer mixture for two polymerization reaction types, (b) a compound which can react with both...
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5476741 |
Toner for heat fixing
A toner for heat fixing comprising a styrene type resin and a colorant and satisfying the following formula: A≤900 ppm and B≥80%, or A≤650 ppm and B≥70% wherein A is a quantity of...
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5472818 |
Polymer particles and process for producing the same
Spherical resin particles having a sharp particle size distribution and a method for producing such particles are disclosed. Resin particles according to this invention contain at least a polyester...
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5470686 |
Image forming apparatus
An image forming apparatus is constituted by an image-bearing member for bearing a latent image, and a developing apparatus for developing the latent image. The developing apparatus is constituted...
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5466556 |
Photosensitive microencapsulated toner
A photosensitive microencapsulated toner includes a radical polymerizable unsaturated group-containing compound, a metal arene compound, a spectral sensitizing dye, and a photosensitizer. The toner...
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5462829 |
Polymer blends and toner compositions comprising same
Polyblends are provided which comprise (a) a major amount of a linear or branched matrix polymer comprising a polyester having a number average molecular weight of at least 2000 or a vinyl polymer...
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5462830 |
Resin composition for a toner for an electrophotography and the toner comprised the same
A resin composition for a toner comprising a polymer made of styrene/(meth)acrylic ester copolymers, a thermoplastic polyesterurethane resin having a weight average molecular weight in a range of...
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5462828 |
Styrene/n-butyl acrylate toner resins with excellent gloss and fix properties
A toner composition includes a styrene/n-butyl acrylate copolymer resin having a number average molecular weight of less than about 5,000, a weight average molecular weight of from about 10,000 to...
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5460914 |
Toner, method for manufacturing same, and imaging apparatus using same
The present invention aims to provide a deformed toner having a narrow toner particle size distribution, a simple manufacturing method of same, and an imaging apparatus using same. The toner...
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5455315 |
Emulsion polymerization processes and toners thereof
An in situ process for the preparation of resin particles comprising: preparing a seed particle latex by aqueous emulsion polymerization of a first mixture comprised of at least one monomer, an...
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5437953 |
Dye-polymer toners for electrophotography
This invention consolidates all of the functions served by the EP toner in one macromolecule. The invention is a macromolecule of dye-polymer comprising a dye colorant copolymerized with a...
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