Patents for G03G 9 - Developers (22,748)
04/1981
04/28/1981US4264700 Method of forming magnetic toner particles having a concentration of magnetic particles greater than 45 percent by weight by dispersion polymerization techniques
04/28/1981US4264699 Liquid developer for use in electrophotography
04/28/1981US4264698 Spherical magneto-sensitive material and flowable particles
04/28/1981US4264697 Imaging system
04/28/1981US4264648 Thermally decomposing transition metal carbonyls to impregnate glass beads with metals or metal oxides
04/21/1981US4263389 Electrographic latent imaging, development
04/14/1981US4262078 Light transmitting particle for forming color image
04/14/1981US4262077 Printing plates of extended press life
04/14/1981US4262076 Method for manufacturing magnetically attractive toner particles and particle
04/14/1981CA1099438A1 Method of sizing monomer droplets for suspension polymerization to form small particles
04/14/1981CA1099437A1 Non-aqueous resin dispersion and method of manufacturing thereof
04/08/1981EP0026211A1 A method for dry sensitization of an insulating surface.
04/07/1981CA1098751A1 Electrographic toner and developer composition containing a 4-aza-1-azoniabicyclo-(2.2.2.)-octane salt as a charge control agent
04/01/1981EP0026096A1 Image-receiving sheet and a process of producing a dye image therewith
03/1981
03/31/1981US4259428 Liquid developer for electrostatic latent image
03/31/1981US4259427 Ferromagnetic and dielectric toner particles
03/31/1981US4259426 Narrow range of particle sizes
03/31/1981CA1098357A1 Electrophoretic migration imaging process with neutral density bisazo naphthalenediol pigments
03/24/1981US4258116 Organic semiconductor
03/24/1981US4258112 Sensitizer for electrophoretic migration imaging dispersions
03/17/1981US4256824 Method using positively charged electrophotographic toner containing amido dialkyl hydroxy ammonium compound
03/17/1981US4256818 Magnetic or electrostatographic imaging and high speed fusing method uses polyamide resin in toner
03/11/1981EP0024762A2 Electrophotographic process for forming a visible image
03/05/1981WO1981000628A1 Toner particles for electrophotography and electrophotographic process utilizing same
03/03/1981US4254205 Dry developers
03/03/1981US4254204 Toner, core and secondary particles
03/03/1981US4254203 Dry process developing method employing magnetic toner
03/03/1981US4254201 Pressure sensitive adhesive toner of clustered encapsulated porous particles for use in electrostatic photography
03/03/1981CA1096682A1 Luminescent material dispersion comprising mixed polymers of vinyl pyridines and methacrylates
02/1981
02/25/1981EP0024169A2 Electrically photosensitive particles for electrophoretic migration imaging processes, dispersions of these particles, and processes using such dispersions
02/24/1981US4252921 Images having good wear resistance
02/24/1981US4252882 Developing electrophotographic images using aqueous ink and treating smooth, hydrophobic image surface with cleaning liquid
02/24/1981US4252881 Electrography, toners, steel beads
02/24/1981US4252672 Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds
02/24/1981US4252671 Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds
02/24/1981CA1096222A1 Electrographic liquid developers containing azo dye marking particles derived from 2,3-naphthalenediol or derivatives thereof
02/17/1981US4251616 Magnetic toners and development process
02/17/1981US4251611 Process for formation of permanent image
02/10/1981US4250241 Acrylic graft polymers
02/03/1981US4248954 Surfaces coated with perfluorocarboxylic acids in a polymeric binder; aging resistance
02/03/1981US4248950 Electrostatic developer mix containing either MoS2, TiS2, WS.sub.2
01/1981
01/27/1981US4247597 Electroscopic carrier particles having a carboxylic acid surface treatment
01/27/1981US4247459 Developers in electrography
01/27/1981US4246839 Nonimpact printer
01/22/1981WO1981000156A1 Improved photocopying apparatus
01/21/1981EP0022639A1 Electrostatographic toner composition and electrostatographic developer composition
01/21/1981EP0022638A1 Electrostatographic toner composition and developer composition comprising the same
01/20/1981US4246332 Electrophotographic toner comprising low and high molecular weight blend of binder resins
01/20/1981US4246331 Electrophotographic developers containing sublaminate dyes
01/20/1981US4246208 Dust-free plasma spheroidization
01/20/1981CA1093883A1 Liquid developer containing a dispersed toner comprising a coloured substance bearing a resinous copolymer
01/14/1981EP0022347A1 Electrostatographic developer mixture
01/13/1981US4245026 Production of low density coated magnetic polymer carrier particulate materials
01/13/1981US4245024 Development process for an electrophotographic duplicator employing magnetic toner
01/13/1981US4245022 Comprising abrasive particles exhibiting no frictional charging
01/08/1981WO1981000024A1 Dry magnetic pressure-fixable developing powder
01/07/1981EP0021851A1 Electrostatographic toner composition
01/06/1981US4243736 Liquid developer and copolymer polarity control agent for use therewith
12/1980
12/30/1980US4242434 Magnetic carrier, measurement of conductivity
12/23/1980US4241161 Applying two separate charges
12/23/1980US4241159 Electrophotographic liquid developer comprising acrylic or methacrylic acid ester of hydrogenated abietyl alcohol polymer
12/23/1980CA1091970A1 Magnetic non-conductive one component toner with a lubricant coating and method of preparation
12/16/1980US4239845 Electrophotographic copying method using two toners on magnetic brush
12/16/1980CA1091497A1 Process for electrophotographic image formation by toner transfer using a corona
12/10/1980EP0020181A1 Process for preparing coated carrier particles for electrostatographic developers
12/09/1980US4238562 Transparent resin binder, spirobenzopyran indole, coloring agent
12/09/1980US4238558 Low density magnetic polymer carrier materials produced by metal carbonyl thermal decomposition
12/09/1980CA1091001A1 Ferromagnetic toner
12/02/1980CA1090864A1 Magnetic interpositive method
11/1980
11/11/1980US4233388 Method for making toner particles
11/11/1980US4233387 Magnetic metal cores with fused thermoplastic resin coating
11/11/1980CA1089276A1 Hybrid liquid toners including an amphipathic polymer, a charge director, a thermoplastic fixer and a dispersant
11/04/1980US4232323 Magnetographic apparatus
11/04/1980CA1088798A1 Electrostatographic developing material containing toner particles and a polystyrene additive
10/1980
10/28/1980US4230787 Magnetic toner for developing latent electrostatic images and a process for the preparation thereof
10/28/1980US4230784 Electrostatic image forming process and particles comprising reactive sublimable dye, subliming developer and conductive substance
10/21/1980US4229513 Chlorinated polyethylene, and copolymer of polar monomer and solubilizing monomer
10/21/1980US4229512 Which decomposes, becoming colorless, to leave an image the color of the permanent colorant
10/16/1980WO1980002222A1 A method for drysensitization of an insulating surface and a powder for use with the method
10/07/1980US4226843 Process and apparatus for production of spherical grain ferrite powder
10/07/1980CA1087014A1 Liquid developer for color electrophotography and process for preparation of the same
10/07/1980CA1087013A1 ELECTROPHOTOGRAPHIC CARRIER OF MAGNETICALLY ATTRACTABLE CARRIER COATED WITH A METAL ION-LINKED CARBOXYLIC ACID .alpha.-OLEFIN COPOLYMER
09/1980
09/30/1980US4225660 Treated toner carrier and method of making the same
09/23/1980US4224396 Magnetic toner materials containing quaternary ammonium polymers as charge control agents
09/17/1980EP0015744A1 Process of preparing coated carrier particles for electrostatographic developers
09/16/1980US4223086 Electrostatic process using liquid developer comprising polymeric phosphonate dispersant
09/16/1980US4223085 Semi-conductive nickel carrier particles
09/16/1980US4222982 Process for preparing toner of improved mechanical properties
09/09/1980US4221856 Electrographic toner containing resin-compatible quaternary ammonium compound
09/09/1980US4221554 Method and apparatus for forming spherical particles of thermoplastic material
09/03/1980EP0014933A1 Device for supplying toner to an electrophoretic developing apparatus
09/02/1980US4220698 Direct imaging pressure fixable magnetic toners
08/1980
08/26/1980CA1084325A1 Dry developer particle of resistivity higher than 10 su14 xx ohm-cm comprising thermoplastic resin and magnetic material
08/19/1980US4218530 Single component magnetic toner
08/19/1980US4218362 Powder marking agent and marking method
08/12/1980US4217406 Cross-linking reaction during melt kneading produces resinous electrophotographic toner
08/05/1980CA1082973A1 Carrier with coating of resin and copper tetra-4- (octadecylsulfonamido) phthalocyanine and use thereof in colour electrophotographic development
08/05/1980CA1082971A1 X-ray system with electrophoretic imaging
07/1980
07/29/1980US4215193 Comprising a colorless spheroidal-shaped polymer/ d to ion exchange membrane
07/22/1980US4213872 Sludge resistant liquid developer for electrostatic images containing a metal-dithiooxamide pigment or coating