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Class 430/106.3 - Elemental metal or alloy magnetic component


Subclass of Class 430 - Radiation imagery chemistry: process, composition, or product thereof
Definition: Subject matter wherein the magnetic component is a metal
No. of patents: 40
Last issue date: 04/08/2008


NumberTitleIssue Date
7353894Sealed nickel-metal hydride storage cells and hybrid electric having the storage cells
A sealed nickel-metal hydride storage cell includes a positive electrode containing nickel as a positive electrode active material, a negative electrode containing a hydrogen-absorbing alloy as a negative electrode active material, a separator interposed between the...
04/08/2008
7233758Developing apparatus featuring a developer carrying member with an elastic surface layer
A developing device includes a rotatable developer carrying member for carrying a developer to develop an electrostatic image formed on an image bearing member with the developer; non-rotatable magnetic field generating means, disposed inside the developer carrying ...
06/19/2007
6447969Toner and image forming method
A toner is formed of toner particles each comprising a binder resin and iron oxide particles dispersed therein. The toner particles are characterized by uniform but non-surface-exposed dispersion of the iron oxide particles within the toner particles as r...
09/10/2002
6376146Developing agent and image forming apparatus
Added to magnetic toner particles are 0.5 to 5% by weight based on the total weight of the toner particles of a magnetic powder and 0.01 to 0.5% by weight based on the total weight of the toner particles of stearate particles having an average particle di...
04/23/2002
6355194Carrier pelletizing processes
A process for the preparation of microsynthetic carrier comprising the melting of a mixture of binder resin, magnetic component, colorant and optionally charge control additive, thereby forming a polymer melt, and mixing said mixture in a melt mixing devi...
03/12/2002
6338928Negative developing agent and image forming apparatus using the same
A negative conductive silica and an inorganic oxide are added to a negative magnetic toner so as to obtain a developing agent satisfactory in the rise of the charging and in the stability of charging over the entire life of the developing agent and capabl...
01/15/2002
6235442Colored, magnetically attractable powder containing fluorescent dye
A colored powder, particularly a toner powder, containing a thermoplastic resin, a fluorescent dye, possibly a magnetically attractable material and a compound of a metal of which an ion is diagmagnetic. The metal is, for example, calcium, silver, sodium,...
05/22/2001
6165655Toner composition and use thereof for forming sintered pattern on solid surface
A toner composition useful for forming a single or full colored image on a transfer sheet, containing a coloring agent, and a binder resin, wherein the coloring agent contains a plural kinds of metal elements (a) which contribute to the color of the color...
12/26/2000
6063180Use of free-flowing, magnetic iron oxide containing granules with 50 to 73 wt. % iron content
Magnetic iron oxide-containing granules for producing toners or inks, the granules comprising 95.0 to 99.8 wt. % of a magnetic iron oxide-containing compound and 0.2 to 5.0 wt. % of a binder, wherein the magnetic iron oxide-containing compound has an iron...
05/16/2000
5845184Developing 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 a toner accommodating chamber for accommodating magnetic t...
12/01/1998
5460913Toner for developing electrostatic image and process for the preparation thereof
Disclosed is a process for the preparation of a polymerization process toner for developing an electrostatic image which comprises the polymerization of a polymerizable monomer containing finely divided magnetic grains dispersed therein, a compound repres...
10/24/1995
5266458Electrophotographic developer comprising silicon oil on its surface
A developer for electrophotography is disclosed including a magnetic carrier and a magnetic toner having a surface, wherein a silicon oil is caused to adhere to the surface of the magnetic toner is provided....
11/30/1993
5232805Magnetic particles containing iron as the main component and process for producing the same
Disclosed herein is magnetic particles containing iron as the main component which have an average particle diameter of 0.1 to 3.0 μm and a liquid absorption of not more than 18 m.infin.....
08/03/1993
5219695Image forming method
An image forming method comprises the steps of feeding a magnetic toner onto a toner carrying member, wherein the magnetic toner comprises a binder resin and a magnetic powder with a volume average particle diameter ranging from 7 μm to 10 μm, and the m...
06/15/1993
5194356Toner compositions
A colored magnetic toner composition comprised of a polymer resin or resins, an optional waxy, lubricating or low surface energy substance, a colorless or light colored magnetic material, a color pigment, dye or mixture thereof, excluding black, and a whi...
03/16/1993
5188919Particulate toner material containing charge controlling compound
Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net negative charge and contains thermoplastic resin(s) as bin...
02/23/1993
5180650Toner compositions with conductive colored magnetic particles
A toner composition comprised of resin particles, pigments, and a colored highly conductive magnetic composition comprised of a core comprised of a metal, and thereover a coating comprised of a lightly colored metal selected from the group consisting of c...
01/19/1993
5153092Processes for encapsulated toners
A process for the preparation of encapsulated toners which comprises blending core momomer or monomers, free radical initiator, pigment, and an oil soluble shell monomer; dispersing the resulting mixture in a stabilized aqueous suspension; thereafter subj...
10/06/1992
5147744MICR processes with colored encapsulated compositions
A colored magnetic encapsulated toner composition comprised of a core comprised of a polymer binder, magnetic metal particles, whitener, color pigment, dye or mixtures thereof, and which core is encapsulated in a polymeric shell, and wherein the toner sur...
09/15/1992
5071724Method for making colored magnetic particles and their use in electrostatographic toner compositions
The present invention provides for a method for the preparation of colored magnetic particles for multicomponent toner compositions in which colors are produced by means of a chemical reaction of different metallic oxides formed on the surface of the magn...
12/10/1991
4971879Polymer for toner, process for preparation thereof and toner composition
A polymer binder, in which the content of a residual monomer is not more than 200 ppm, generates a smell only to a very slight extent and provides a toner having an improved blocking resistance and resistance against a plasticizer for polyvinyl chloride. ...
11/20/1990
4877706Single component cold pressure fixable encapsulated toner compositions
A cold pressure fixing toner composition comprised of a core containing a polymer component and magnetic pigment particles, and wherein the core is encapsulated within a shell comrised of the interfacial polycondensation reaction of a first polyisocyanate...
10/31/1989
4876172Imaging method employing photoadhesive microparticles
A process for forming images which comprises forming a continuous layer of photosensitive microparticles, said microparticles being formed from a material which becomes tacky upon exposure to actinic radiation, image-wise exposing said layer to actinic ra...
10/24/1989
4803142Containing magnetic particles having a bulk resistivity of at most 1045 -1012 ohm.cm
A magnetic toner for developing characteristic latent images is disclosed. The magnetic toner has a magnetic material content W (wt. %) of 20-60 wt. %, a saturation magnetization ςs of W emu/g or higher as measured at a magnetic field of 10 k ...
02/07/1989
4803143Colored single-component toners and their preparation
Colored single-component toners essentially consist of a magnetic pigment, a binder based on an organic polymer and/or a wax, a dye or colored pigment homogeneously distributed in the binder, and other assistants, the magnetic pigment being iron powder wh...
02/07/1989
4654287Insulated magnet toner
An insulated magnetic toner comprising a binder resin and a powdery magnetic material, said magnetic material being iron or an alloy thereof having a coercive force of not more than 600e....
03/31/1987
4609608Colloidal size hydrophobic polymer particulate having discrete particles of a metal dispersed therein
Colloidal size particles of a non-oxidized metal (e.g., iron or silver) are encapsulated in a hydrophobic polymer (e.g., a copolymer of styrene and butylacrylate) by a polymerization process wherein a water-immiscible monomer is dispersed in an aqueous co...
09/02/1986
4601967Toner particles having a relatively high specific volume resistivity coating layer
A toner for developing latent electrostatic images is disclosed, which consists of toner particles, with each toner particle consisting of (i) a core particle comprising an electroconductive material and/or magnetic powder and a binder agent, having a spe...
07/22/1986
4569896Resistive single component developer composition
An improved single component magnetic toner composition with a resistivity of from about 1013 to about 1016 ohm/cm, at 1,000 volts, and comprised of: (a) first resin particles of a styrene methacrylate copolymer grafted with or conta...
02/11/1986
4529680Magnetic toner for pressure fixation
A magnetic toner for pressure fixation containing at least a resin and a magnetic powder as the main components, where the resin is a polymer essentially, containing methyl-1-pentene as the main component and having a softening point of at least 80° C. a...
07/16/1985
4520090Magnetic toner
There is disclosed a magnetic toner comprising a magnetic powder and a compound having the following general formula: ##STR1## wherein R1, R2, R3, A and M are the same as defined in the specification. The magnetic ton...
05/28/1985
4515880Reflex imaging process with magnetic images
Method of developing latent magnetic images obtained by reflex thermomagnetic recording. A reflex imaging member is magnetized and a latent magnetic image formed thereon by thermoremanent exposure. The imaging member is developed by contacting it with mag...
05/07/1985
4514484Powder for developing latent images and a method of producing the powder
A powder suitable for developing latent magnetic images comprising magnetic particles coated with a mixture of a thermoplastic resin and a silane. A method for producing the said powder comprising hot-forming a mixture of magnetic particles, a thermoplast...
04/30/1985
4407923One component magnetic developer
Disclosed is a dry magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said composition comprises as the ...
10/04/1983
4395485Dry electrophotographic toner comprising small, polymer coated particles as flow agent
This is one-component type dry developer for an electrophotography which is improved on humidification ability, and consists of mixture of toner with a particle size of 5~50 (μ) and hydrophobic flow agent. The flow agent is made by covering inorganic, or...
07/26/1983
4293627Process of developing magnetic images and dry magnetic toner compositions
This invention is generally directed to toner compositions comprised of a magnetic material and a resin comprising a polymeric esterification product of 1,4-benzenedicarboxylic acid polymerized with 1,2,4-benzenetricarboxylic aicd-cyclic 1,2-anhydride and...
10/06/1981
4271248Magnetic latent image toner material and process for its use in flash fusing developing
A method for developing magnetic latent images comprising forming a latent image on a suitable substrate and contacting said image with a magnetic toner which comprises a magnetic material and a resin comprising a polymeric esterification product of a dic...
06/02/1981
4230787Magnetic toner for developing latent electrostatic images and a process for the preparation thereof
A one-component developer for developing a latent electrostatic image which comprises magnetic particles, thermoplastic resins and electric charge controlling dyestuffs as main components and in which the magnetic particles are substantially coated with t...
10/28/1980
4105572Ferromagnetic toner containing water-soluble or water-solubilizable resin(s)
Ferromagnetic toner which is useful in magnetic printing processes and devices for printing a variety of substrates, including textiles, such as fabric and yarn, film, paper, metal and wood, which toner comprises a ferromagnetic component, a dye and/or ch...
08/08/1978
4082681Magnetic developer for electrostatic photography and process for preparation thereof
A developer for electrostatic photography comprising as indispensable components a fine powder of a magnetic material and a binder resin, said developer consisting essentially of a dry blend of (A) substantially spherical particles of a composition compri...
04/04/1978
 
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