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5738966 |
Non-magnetic one-component developer and image forming process
A negatively electrifiable, non-magnetic and single component developer comprising a binder resin, a carbon black and a charge control agent, wherein the carbon black has an average primary...
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5723247 |
Toner and developer compositions with organosiloxane copolymers
The image transfer properties and other properties of a fixable toner composition are made more stable by blending the binder resin of the toner with a multiphase organosiloxane block or graft...
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5721083 |
Dry color toner for electrophotography and production process thereof
A color toner that is able of forming a projected image having excellent color reproducibility when a toner image is produced on an optically transparent film by electrophotography, and a color...
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5719002 |
Process for the preparation of colored toner and developer compositions for enlarged color gamut
A combination of toners containing a cyan toner, a magenta toner, a yellow toner, a violet toner, and a black toner, each toner containing resin and pigment. The pigment for each of the colored...
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5712074 |
Toner for developing electrostatic latent image
A toner for developing an electrostatic latent image including a binder resin, a colorant, and a modified polysiloxane having the general formula (1): ##STR1## In the above general formula, R1 to...
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5710965 |
Developer for developing electrostatic images and image forming method
A developer for developing electrostatic images has a toner and an aggregate of fine particles. The aggregate holds a silicone compound selected from the group consisting of a silicone oil and a...
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5707770 |
Toner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing toner
A toner for developing electrostatic images has toner particles containing a binder resin and a colorant, and fine titanium oxide particles or fine alumina particles. The surfaces of the fine...
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5705305 |
Developer for developing electrostatic latent image
A developer for developing an electrostatic latent image formed on an photosensitive body, including a toner, a fluidity improving material, a cleaning material, and hydrophobic fine particles...
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5705303 |
Toner composition for electrophotography
A toner composition for electrophotography comprising toner particles comprising a binder and a colorant and an additive, wherein the additive is crystalline titanium dioxide fine particles which...
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5700617 |
Toner for developing electrostatic images and charge-controlling agent
A toner for developing an electrostatic image is formed from toner particles containing a binder resin, a colorant, and a charge-controlling agent. The charge-controlling agent comprises an...
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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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5683843 |
Solid colored composition mutable by ultraviolet radiation
A solid colored composition which includes a colorant and an ultraviolet radiation transorber. The colorant, in the presence of the ultraviolet radiation transorber, is adapted, upon exposure of...
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5670289 |
Method of using scavengeless developer compositions
A method of imaging which comprises formulating an electrostatic latent image on an imaging member, affecting development thereof with a toner composition comprised of resin particles, and pigment...
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5663026 |
Magnetic toner, process cartridge and image forming method
A magnetic toner is formed from a binder resin and silicon-containing magnetic iron oxide particles. The magnetic toner has a weight-average particle size of at most 13.5 μm, and the magnetic ...
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5663025 |
Magenta toner and developer compositions
A toner composition comprised of resin particles, first magenta pigment particles of a molydate silicate salt of rhodamine, and second magenta pigment particles of a 2,9-dimethylquinacridone; and...
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5639582 |
Electrophotographic toner composition and process for the preparation thereof
An electrophotographic toner composition which can fix an electrostatic latent image without causing offset in the presence of a small amount of a fuser oil or in the absence of fuser oil in the...
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5637432 |
Toner for developing electrostatic image comprising titanium oxide particles
The present invention provides a toner for developing an electrostatic image, comprising toner particles and external additives, wherein; said external additives comprise (A) titanium oxide...
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5635326 |
Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide
A toner for developing an electrostatic image, which comprises a colorant-containing particulate resin and a treated fine powdery material prepared by treating fine powdery titanium oxide with a...
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5629123 |
Toners for use in developing electrostatic images
A toner for developing electrostatic images is disclosed which comprises a coloring agent, a styrene homopolymer or copolymer with a vinyl monomer or monomers, and polypropylene in an amount...
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5620825 |
Polysiloxane modified resins for toner
There are provided dry toner particles wherein the toner resin comprises more than 10% by weight of one or more polysiloxane modified resins. In this resin the polysiloxane moieties are attached to...
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5616443 |
Substrate having a mutable colored composition thereon
A solid colored composition which includes a colorant and an ultraviolet radiation transorber. The colorant, in the presence of the ultraviolet radiation transorber, is adapted, upon exposure of...
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5607806 |
Toner with organically treated alumina for developing electrostatic image
A toner for developing electrostatic images includes: toner particles and organically treated alumina powder. The organically treated alumina powder has an X-ray diffraction characteristic showing...
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5604071 |
Toner for developing electrostatic image
The toner for developing an electrostatic image, excellent in any environmental conditions, comprises the colorant-containing resin particles and at least one kind of fine titanium oxide powder...
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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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5571654 |
Toner compositions with negative charge enhancing additives
A negatively charged toner composition comprised of toner resins, colorants, optional surface additives, and a metal charge enhancing additive obtained from the reaction of a metal ion with a molar...
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5561013 |
Magenta toner and imaging processes
An imaging process which comprises (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3)...
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5557393 |
Process and apparatus for achieving customer selectable colors in an electrostatographic imaging system
An electrostatographic imaging process includes forming an electrostatic latent image on an image forming device, developing the electrostatic latent image on the image forming device with at least...
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5547802 |
Image formation materials and image fading prevention method
An image formation material for forming images including color images, such as a toner or developer for use in image formation methods such as electrophotography, electrostatic recording, and in an...
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5536608 |
Imaging processes using cyan and black toners
An imaging process which comprises (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3)...
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5534981 |
Image forming apparatus and developer for developing electrostatic images
An image forming apparatus includes a member to be charged for carrying an electrostatic image, a contact-charging means for charging the member to be charged in contact with the member to be...
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5518851 |
Toner
The present specification discloses a toner for electrophotography.This toner comprises two or more kinds of binder resins, and is characterized in that the surface tension of each of the binder...
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5516614 |
Insulative magnetic brush developer compositions
An insulating developer composition comprised of resin particles, pigment particles, wax component particles, compatibilizer, and a surface additive mixture comprised of metal salts of fatty acids,...
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5510223 |
Image forming method comprising electrostatic transfer of developed image and corresponding image forming apparatus
An image forming method, including the steps of: developing an electrostatic image formed on an electrostatic image-bearing member with a developer to form thereon thereon a developed image, the...
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5510220 |
Conductive developer compositions with surface additives
A developer composition comprised of negatively charged toner particles comprised of crosslinked polyester resin particles, pigment particles, and a surface additive mixture comprised of metal...
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5506083 |
Conductive developer compositions with wax and compatibilizer
A developer composition comprised of a negatively charged toner composition comprised of crosslinked polyester resin particles, pigment particles, wax component particles, a compatibilizer and a...
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5502118 |
Polyester salts and their use as charge control agents
Polymer salts whose anionic component is a polyester which comprises the product of reaction of the individual components a), b) and c) and if desired d) and if desired e), where a) is a...
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5494768 |
Toner composition containing ethylene bisamide compounds
A toner composition is disclosed capable of developing electrostatically charged images formed on an electrophotographic member, comprising styrene-based resin particles, pigment particles, a...
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5486443 |
Magnetic toner compositions with silica, strontium titanate and polyvinylidene fluoride
A toner comprised of resin particles, magnetite, carbon black, rhodamine charge additive, wax, and a surface mixture of silica, strontium titanate and polyvinylidene fluoride.
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5484678 |
Toner compositions with charge additive mixture
A toner composition comprised of resin, pigment and a charge additive mixture of components of the formulas ##STR1## wherein R1 is an alkoxy group, R2 is an alkyl group, and n is an integer of 1 to 3.
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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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5480755 |
Magnetic toner, image forming method, surface-modified fine silica powder and process for its production
A magnetic toner has magnetic resin particles containing at least a binder resin, a charge control agent and a magnetic powder. The surface-modified fine silica powder being a fine silica powder...
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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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5447815 |
Developer for developing electrostatic image and image forming method
A developer for developing an electrostatic image, comprising a toner and treated fine powder which has been treated with silicone oil or silicone varnish, wherein the treated fine powder has a...
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5429902 |
Electrophotographic toner composition and image formation method using the same
An electrophotographic toner composition comprising toner particles containing at least a colorant, a binder resin and an additive, and an image formation method using the toner composition are...
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5429899 |
Magnetic materials
Herein are disclosed a resin magnet excellent in flow characteristics and magnetic properties comprising a surface modified magnetic powder in respect of which the surface of the magnetic powder...
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5424129 |
Composite metal oxide particle processes and toners thereof
A composite metal oxide charge enhancing additive composition comprised of a first metal oxide forming a core particle, and a second metal oxide forming an outer layer on the first metal oxide core...
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5424161 |
Toner composition
The present invention is directed to a toner composition containing a polyester resin having an OHV/AV value of 1.2 or more as a major component of a binder resin wherein AV is an acid value of...
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5422218 |
Electrophotographic toner compositions
A toner composition for use in electrophotographic processes containing a resin binder which about 10 to 40% of THF-insoluble gel portion and about 60 to 90% of THF-soluble portion. The THF-soluble...
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5415936 |
Surface-modified pyrogenically produced titanium dioxide
Surface-modified, pyrogenically produced titanium dioxide which has the following physico-chemical properties: TBL ______________________________________ Surface (m2 /g) 5 to 120 Stamping density...
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5411833 |
Electrophotographic toner and developer compositions and color reproduction processes using same
Toner and liquid developer compositions for use in color electrophotographic processes are described. The developer compositions display high particle-mediated conductivity and charge and thus give...
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