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6218067 Toners containing chargeable modified pigments  
A toner composition is disclosed which contains the product of the mixture of resin particles and chargeable modified pigment particles. The chargeable modified pigment particles comprise at least...
6197470 Toner, image forming method and apparatus unit  
A toner is disclosed which contains toner particles and a hydrophobic fine silica powder. The hydrophobic fine silica powder has the following hydrophobic properties: the transmittance of the...
6187497 Eletrophotographic toner and image forming method  
An electrophotographic toner comprising colored particles comprised of inorganic particles is disclosed.The inorganic particles have a saturated moisture content WL at ambient conditions of 10° C....
6183927 Toner and image forming method  
An electrophotographic toner is formed of toner particles each comprising at least a binder resin, a colorant and a release agent, and a low-crystalline aromatic metal compound present at surfaces...
6136491 Developing agent, image forming apparatus and image forming method  
Titanium oxide, silica having a BET specific surface area of 10 to 50 m2 /g, and metal soap having a volume average grain diameter of 1 to 5 μm are added to toner particles. With such toner, it...
6110634 Electrophotographic toner  
PCT No. PCT/JP98/05375 Sec. 371 Date Jul. 30, 1999 Sec. 102(e) Date Jul. 30, 1999 PCT Filed Nov. 30, 1998 PCT Pub. No. WO99/28792 PCT Pub. Date Jun. 10, 1999The present invention relates to an...
6087059 Toner and developer compositions  
A toner comprised of resin, colorant and a surface additive mixture comprised of two coated silicas, and a coated metal oxide.
6083653 Cyclooligosaccharide-boron complex  
Cyclosaccharide-boron complexes consisting of 1 to 4 cyclodextrin units and one borate radical of the formula (I): ##STR1## have good charge control properties and lend themselves excellently to...
6077640 Fine powder of hydrophobic metal oxide, method for producing it, and toner composition for electrophotography  
A fine powder of a hydrophobic metal oxide is provided which is produced through surface treatment of fine powder of a metal oxide with an epoxy compound and an alkylsilazane or ammonia thereby...
6060615 Positively-chargeable charge control agent and toner for developing electrostatic images  
Positively-chargeable charge control agent and toner for developing electrostatic images that comprises a coloring agent, a resin for toners, and said positively-chargeable charge control agent....
6060202 Toner for developing electrostatic images image forming method and process cartridge  
An electrophotographic toner including a blend of toner particles, and external additive particles, is provided with characteristic particle size distribution conditions, i.e., (i) a particle size...
6057073 Toner for developing electrostatic image, image forming method, developing apparatus unit, and process cartridge  
A toner for developing an electrostatic image has toner particles containing at least a binder resin and a colorant, and an inorganic fine powder. The inorganic fine powder has been treated with a...
6054239 Toner  
A toner comprises toner particles which have been colored with a dye and have a volume mean diameter of several μm, and to which silicone fine particles are externally added. A dry-development...
6030739 Electrostatic image developing toner  
An electrostatic image developing toner containing a polysiloxane having the following repeating units (a) and ##STR1## wherein R1 is a C1 -C6 alkyl group such as a methyl group or a C6 -C12 aryl...
6025103 Highly pure material for electrophotographic printing, and method of manufacturing such highly pure material  
Toner magnetic powder which uses a resin as a binder and contains a dye is coated by a methyl methacrylate resin, thereby forming a carrier. A developer is formed by such a carrier in which those...
6021293 Negatively chargeable developing agent for mono-component development, mono-component developing device using the developing agent, and image-forming apparatus  
The present invention relates to a negatively chargeable developing agent for mono-component development comprising; toner particles containing a binder resin and a colorant; and inorganic fine...
6013405 Developing agent and developing device using the same  
A developing agent comprising toner particles and carrier particles, the toner particles including less than 21% of particles having a roundness of less than 0.93, and containing a binder resin, a...
6010814 Electrophotographic toner composition and image formation method using the composition  
An electrophotographic toner composition is disclosed, including toner particles containing a coloring agent, a binder resin and at least two kinds of additives, wherein these additives satisfy...
6001527 Electrostatic charge image developer, image formation method and image forming device  
The present invention provides an electrostatic image developer comprising a toner and a carrier wherein the toner includes toner particles having an average particle diameter of 3 to 9 μm, a...
5998079 Color toner  
The invention relates to a color toner composition comprising at least a binder resin and a colorant, and further comprising at least two charge control agents, wherein at least one of said charge...
5994016 Dry developer for developing electrostatic latent image  
A color developer is described that contains a toner and a resin-coated carrier, wherein the toner contains a hydrophobic particulate titania and a charge controlling agent, and the charge...
5990332 Metal compound of aromatic hydroxycarboxylic acid, charge control agent, toner, and powdery paint  
Metal compound of formula [I] which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting...
5981131 Electrostatic toner composition to enhance copy quality by rejection of ghosting and method of manufacturing same  
An electrostatic developer comprising a mixture of (1) a toner component containing image-forming particles, and (2) particles obtained by subjecting inorganic oxide or organic particles to a...
5968689 Image-forming material, process for preparation thereof, and image-receiving medium  
The present invention provides an image-forming material which can be removed easily from image-receiving paper while maintaining the fixability to the image-receiving paper; a preparation process...
5948585 Optimized particulate surface treatment concentration for electrostatographic images produced in an electrostatographic engine that includes a compliant intermediate transfer member  
A method of producing images includes forming an electrostatic latent image on a primary image forming member. A toner image is developed on the primary image forming member using a developer...
5925487 Composition, compound and use  
A toner resin composition comprising a toner resin and the metal salt or complex of a carbocyclic hydroxy caboxylic acid containing at least one methylene group optionally substituted by hydroxy...
5922500 Toner for developing electrostatic image  
A toner for developing an electrostatic image is disclosed which has toner particles and hydrophobic fine titanium oxide particles. The hydrophobic fine titanium oxide particles have, in X-ray...
5905011 Nonmagnetic monocomponent negatively chargeable color developer  
A nonmagnetic monocomponent negatively chargeable color developer which has excellent light transmittancy for overhead projection transparencies, excellent transfer characteristics, charging...
5879848 Toner for full color developing  
A developer contains a set of color toners and black toner for use in a full color image forming apparatus. Each of the color toners contains a color colorant and a first binder resin, and the...
5876894 Toner containing a silicone wax release agent  
An improved toner for use in electrostatic copying processes is described. The toner, which exhibits high fixing ability at low temperatures, includes a binder resin, a colorant, and a silicone...
5851714 Toner for developing electrostatic image and fixing method  
A toner for developing an electrostatic image is formed from toner particles containing at least a binder resin, a colorant and an organometallic compound. The binder resin in the toner particles...
5851715 Process for the silylation of inorganic oxides  
The invention relates to a process for the silylation of very finely divided inorganic oxides, in which the very finely divided inorganic oxides are treated with at least one silylating agent...
5843525 Surface-modified metal oxide fine particles and process for producing the same  
By treating metal oxide fine particles having a specific surface area of 5 to 500 m2 /g with a silane coupling agent and then further treating the fine particles with a reactive group-terminated...
5837414 Toner for developing electrostatic image and method for forming multicolor image  
Disclosed is a toner for developing an electrostatic latent image, comprising colored particles containing a colorant and a binder resin, and fine particles, wherein said fine particles have a...
5837416 Toner particles comprising specified polymeric beads in the bulk of the toner particles  
Toner particles are provided, having an average volume diameter dvt and comprising a binder resin with melting point TSMt, and comprising polymeric beads incorporated in the bulk of the toner...
5837413 Electrophotographic toner, and developer  
The invention provides a magnetic toner for electrophotography in which an ultrafine particle form of titanium oxide (having a specific surface area of 80 to 120 m2 /g, a degree of hydrophobicity...
5827631 Non-magnetic one-component developer and image forming process using the same  
A non-magnetic one-component developer comprising a binder resin, a colorant and a charge controlling agent, the binder resin being a polyester resin which has a number average molecular weight of...
5800602 Use of inclusion compounds of cyclic polysaccharides as charge control agents  
Inclusion compounds consisting of a host compound, which is a cyclically linked polysaccharide having 3 to 100 monomeric saccharide units and forming a cavity in its molecular framework, and of...
5776648 Electrostatic latent image developing method  
An electrostatic latent image developing method using an electrostatic latent image developing apparatus to develop an electrostatic latent image, including providing the electrostatic latent...
5759729 Photochromic electrostatic toner compositions  
Disclosed is a toner composition for the development of electrostatic latent images which comprises particles comprising a mixture of a resin and a photochromic material. Another embodiment of the...
5752151 Image forming apparatus having a cleaning blade with a tensile strength from 80 to 120 kg/cm2  
An image forming apparatus has an image bearing member holding a toner thereon, and a cleaning blade coming into touch with the image bearing member to remove the toner remaining on the image...
5747209 Toner for developing electrostatic images containing aromatic hydroxycarboxylic acid and metal compound of the aromatic hydroxycarboxylic acid  
A toner for developing electrostatic images is formed of toner particles comprising (a) a binder resin, (b) a colorant or magnetic material, (c) an aromatic hydroxycarboxylic acid (A), and (d) a...
5744276 Toner for developing electrostatic image containing higher and lower molecular weight polymer components  
An electrophotographic toner composition suitable for heat-fixation and showing good storage characteristics is constituted by polymer components, a colorant and a metal-containing organic...
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...
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...
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...
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...
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...
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...
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...