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| Number | Title | Issue Date |
| 5554474 | Conductive substrate bearing a elastomeric polyurethane coating containing a conductivity control agent A member for electrically cooperating with a conductive support surface to attract charged toner particles from the surface towards the member is disclosed. The member comprises a conductive substrate capable of supporting a uniform bias potential thereon... | 09/10/1996 |
| 5547803 | Quaternary phosphonium trihalocuprate salts as charge-control agents for toners and developers New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium trihalocuprate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having from 1 to... | 08/20/1996 |
| 5541001 | Polyurethane biasable transfer members having improved moisture stability The invention provides rolls, belts and other biasable members having at least one layer or coating of an elastomeric resilient polyurethane. The polyurethane is formed by reacting: (a) a polyisocyanate prepolymer;and (b) a hardening mixture comprising: (i) a ... | 07/30/1996 |
| 5516616 | Quaternary ammonium salts as charge-control agents for toners and developers New electrostatographic toners and developers are provided containing charge-control agents comprising certain quaternary ammonium salts having good thermal stability and good charging characteristics. The quaternary ammonium salts are: N-[(3,5-di-te... | 05/14/1996 |
| 5512404 | Developer compositions exhibiting high development speeds Carrier particles for an electrostatographic developer comprising a mixture of particles of a hard, magnetic ferrite material having a hexagonal crystalline structure of the general formula M0.6 Fe2 O3 in which M is strontium, barium... | 04/30/1996 |
| 5512407 | Bis(quaternary phosphonium) tetrahalomanganate salts as charge-control agents New electrostatographic toners and developers are provided containing charge-control agents comprising bis(quaternary phosphonium) tetrahalomanganate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having ... | 04/30/1996 |
| 5508140 | Toners and developers containing quaternary phosphonium 3,5-Di-tertiary-alkyl-4-hydroxybenzenesulfonates as charge-control agents New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium salts having the structure: ##STR1## wherein R1 and R2 are tertiary-alkyl containing from 4 to 8 ... | 04/16/1996 |
| 5500320 | High speed developer compositions with ferrite carriers Carrier particles for an electrostatographic developer comprising particles of a hard, magnetic ferrite material having a hexagonal crystalline structure of the general formula MO.6 Fe2 O3 in which M is strontium, barium or mixtures ... | 03/19/1996 |
| 5491044 | Toners and developers containing quaternary ammonium 3,5-di-tertiary-alkyl-4-hydroxybezenesulfonate salts as charge-control agents New electrostatographic toners and developers are provided containing charge-control agents comprising 3,5-di-tertiary-alkyl-4-hydroxybenzenesulfonate salts having the structure: ##STR1## The substituents are defined in the specification.... | 02/13/1996 |
| 5464719 | Toners and developers containing ammonium tetrahaloferrate salts as charge-control agents New electrostatographic toners and developers are provided containing charge-control agents comprising ammonium tetrahaloferrate salts having the structure: ##STR1## wherein R, R1, R2 and R3 are the same or different ... | 11/07/1995 |
| 5462829 | Polymer blends and toner compositions comprising same Polyblends are provided which comprise (a) a major amount of a linear or branched matrix polymer comprising a polyester having a number average molecular weight of at least 2000 or a vinyl polymer having a number average molecular weight of at least 3000 ... | 10/31/1995 |
| 5459006 | Quaternary phosphonium tetrahaloferrate salts as charge-control agents for toners New electrostatographic toners and developers are provided containing charge-control agents comprising quaternary phosphonium tetrahaloferrate salts having the structure: ##STR1## wherein R is selected from an unsubstituted alkyl group having from 1 ... | 10/17/1995 |
| 5459499 | Hydrophobing agent A hydrophobing agent (30) includes chain-like, cross-linkable, halogen-containing copolymers, a cross-linking agent, where the cross-linking agent enters into cross-linking bonds with the copolymers, and at least two solvents with differing boiling points... | 10/17/1995 |
| 5411600 | Ultrathin film thermocouples and method of manufacture Ultrathin film thermocouple devices, which are extremely small in size and thickness and flexible, allow measurement of temperatures during processing of flexible elements which flex during processing. The invention includes temperature measuring devices ... | 05/02/1995 |
| 5403686 | Electrophotographic element and imaging method exhibiting reduced incidence of laser interference patterns Electrophotographic elements including near-infrared radiation absorbing sensitizers and selected near-infrared radiation absorbing additives exhibit a reduced tendency toward the formation of laser interference patterns. These elements can be utilized in... | 04/04/1995 |
| 5358816 | Zinc salt of ortho-benzoic sulfimide as negative charge-controlling additive for toner and developer compositions This invention is directed to dry, negatively charged toner compositions and developer compositions, the toner composition being comprised of resin particles prepared from a polyester having a glass transition temperature of 50° to 100° C. and a weight ... | 10/25/1994 |
| 5358814 | Toner compositions containing as a negative charge-controlling agent a mixture of ortho-benzoic sulfimide and para-anisic acid This invention is directed to dry, negatively charged toner compositions and developer compositions, the toner composition being comprised of resin particles prepared from a polyester having a glass transition temperature of 50° to 100° C. and a weight ... | 10/25/1994 |
| 5358818 | Ortho-benzoic sulfimide as charge-controlling agent This invention is directed to dry, negatively charged toner compositions and developer compositions, the toner composition being comprised of resin particles prepared from a polyester having a glass transition temperature of 50° to 100° C. and a weight ... | 10/25/1994 |
| 5358820 | Thermally assisted transfer process for transferring electrostatographic toner particles to a thermoplastic bearing receiver A method is provided for non-electrostatically transferring dry toner particles which comprise a toner binder and have a particle size of less than 8 micrometers from the surface of an element to a receiver. The element comprises a conductive substrate an... | 10/25/1994 |
| 5358817 | Toner compositions containing as a negative charge-controlling agent the calcium salt of ortho-benzoic sulfimide This invention is directed to dry, negatively charged toner compositions and developer compositions, the toner composition being comprised of resin particles prepared from a polyester having a glass transition temperature of 50° to 100° and a weight ave... | 10/25/1994 |
| 5358815 | Toner compositions containing negative charge-controlling additive This invention is directed to dry, negatively charged toner compositions and developer compositions, the toner composition being comprised of resin particles prepared from a polyester having a glass transition temperature of 50° to 100° C. and a weight ... | 10/25/1994 |
| 5342724 | Toner manufacture using chain transfer polyesters Polymeric electrophotographic toner and developer compositions are produced by methods including conventional as well as limited coalescence manufacturing techniques. The compositions are prepared by heating a diacid and a diol under conditions effective ... | 08/30/1994 |
| 5334435 | Ink-jet recording liquids A recording liquid for ink-jet recording comprising coloring matter, which is an image-forming component, and a liquid medium for dissolving the coloring matter therein. The liquid medium is ethanol and the coloring matter is a dye represented by the foll... | 08/02/1994 |
| 5334477 | Thermally assisted transfer process A method is provided for non-electrostatically transferring dry toner particles which comprise a toner binder and have a particle size of less than 8 micrometers from the surface of an element to a receiver. The element comprises a conductive substrate an... | 08/02/1994 |
| 5332637 | Electrostatographic dry toner and developer compositions with hydroxyphthalimide N-hydroxyphthalimide as a charge-control agent for fusible, dry electrostatographic toners.... | 07/26/1994 |
| 5332645 | Low dusting carriers A method of manufacturing improved strontium or barium ferrite carrier particles for use in two-component electrographic developer compositions for the development of electrostatic charge patterns is provided in which the tendency toward early life dustin... | 07/26/1994 |
| 5330869 | Electrostatographic toner and developer compositions with phthalimide derivatives This invention is directed to dry, negatively charged toner compositions and developer compositions which employ, as a charge-control agent, a compound selected from the group consisting of phthalimide, 4-aminophthalimide and 4-tert-butylphthalimide; as w... | 07/19/1994 |
| 5316882 | Ferrite green beads and method of producing carrier particles A green bead composite for the manufacture of magnetic carrier particles for electrophotography is disclosed. The composite comprises a synthetic polyester or polyurethane as the binder for metal oxide and other metal salt particles. The dried, nonmagneti... | 05/31/1994 |
| 5306592 | Method of preparing electrographic magnetic carrier particles Carrier particles of substantially uniform particle size and substantially spherical shape comprising hard magnetic ferrite material having a single-phase hexagonal crystalline structure of the formula: MO.cndot.(Fe2 O3)x (A) w... | 04/26/1994 |
| 5298356 | Toner composition with elastomeric thermoplastic polymer and process of preparing A method is described for the preparation of electrostatographic toner particles which involves the surface treatment of a pigment by depositing thereon a coating of an elastomeric thermoplastic polymer. The method involves preparing a polymer solution by... | 03/29/1994 |
| 5298355 | Toner composition with semi-crystalline polyester wax and method of preparation A method is described for the preparation of electrostatographic toner particles which involves the surface treatment of a pigment by depositing thereon a coating of a low melting point hydrophobic semi-crystalline polyester wax. The method involves prepa... | 03/29/1994 |
| 5296568 | Addition-cured silicone elastomers and coated fusing rolls using such elastomers Toner fusing rolls with improved properties are formed with an outer layer comprising an addition-cured silicone elastomer. Such as elastomer is formed by crosslinking hydride substituted organopolysiloxanes and polyimides substituted with unsaturated hyd... | 03/22/1994 |
| 5292621 | Electrostatographic toner containing yellow pigment Electrostatographic toner materials are disclosed which contains a yellow pigment which is a metal coordination complex having the formula: ##STR1## wherein R is preferably hydrogen, or SO2 NHR2 (R2 being alkyl or ary... | 03/08/1994 |
| 5288582 | Photoelectrographic method for printing A photoelectrographic element for electrostatic imaging, containing a conductive layer and a photosensitive layer, is produced using photosensitive layer materials which form a barrier to charge injection where exposed to ultraviolet radiation. As a resul... | 02/22/1994 |
| 5286592 | Electrostatographic toner containing cyan pigment Electrostatographic toner materials containing a cyan pigment which is a metal coordination complex of a substituted 6-heterocycloazo-3-pyridinol compound are disclosed. These pigments are formulated with fusible polymeric binders to provide a toner which... | 02/15/1994 |
| 5284731 | Method of transfer of small electrostatographic toner particles A method is provided for transferring electrostatically charged thermoplastic toner particles having a particle size less than about 8 micrometers from an element to a receiver within a transfer zone. The receiver is heated and contacted with the electros... | 02/08/1994 |
| 5283150 | Electrostatographic toner and method for the preparation thereof A method is described for the preparation of electrostatographic toner particles which involves the surface treatment of pigments using a low melting point highly reactive wax. The method involves preparing a melt dispersion comprising a pigment, a polyme... | 02/01/1994 |
| 5283149 | Electrostatographic toner including a wax coated pigment and method for the preparation thereof A method is described for the preparation of electrostatographic toner particles which involves the surface treatment of a pigment by depositing thereon a coating of a low melting point wax. The method involves preparing a mixture of a wax solution and a ... | 02/01/1994 |
| 5283147 | Electrostatographic toner containing magenta pigment Electrostatographic toner materials containing a magenta pigment which is a metal coordination complex of a substituted 6-arylazo-3-pyridinol compound are disclosed. These pigments are formulated with fusible polymeric binders to provide a toner which exh... | 02/01/1994 |
| 5283151 | Method for the preparation of electrostatographic toner of controlled shape by evaporative limited coalescence A method is described for the preparation of electrostatographic toner particles which involves the use of carnauba wax for treating the surface of a pigment employed The method involves recrystallizing carnauba wax from its natural state by dissolution i... | 02/01/1994 |
