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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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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)...
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...
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...
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)...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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.
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
5409794 Toner compositions with metal chelate charge enhancing additives  
A toner composition comprised of polymers, pigment particles and/or dyes, optional surface additives, and a charge enhancing additive derived from the reaction of a metal, a metal carbonyl, a...
5393632 Toner compositions with manganese complex charge enhancing additives  
A toner composition comprised of resin, pigment, and a manganese complex charge enhancing additive.
5391453 Toner compositions with aluminum complex composite charge additives  
A negatively charged toner composition comprised of resin, colorants comprised of color pigments and/or dyes, optional surface additives, and an aluminum complex composite charge enhancing...
5380615 Process for producing a toner for development of electrostatic charged image  
A toner composition is produced by bulk- or solution-polymerizing a fixer resin in the presence of toner-characteristic imparting agents such as a colorant and a charge controlling agent....
5378572 Electrophotographic dry toner and process for producing the same  
An electrophotographic dry toner comprising a binder resin and a colorant, having externally added thereto an inorganic compound, preferably spherical silica particles, having been surface treated...
5370962 Toner compositions with blend compatibility additives  
A process for the preparation of colored toners which comprises providing a first toner comprised of resin, pigment particles, internal charge additive, and optional surface additives; adding...
5368971 Electrophotographic toner containing a zinc benzoate compound  
A zinc benzoate compound represented by the following general formula: ##STR1## wherein R1 represents an alkyl or aralkyl group; and R2 and R3, independently from each other, each represent an...