Patents by Inventor Maria N. V McDougall
Maria N. V McDougall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6523928Abstract: A method for treating a substrate is disclosed in which a propellant stream is passed through a channel and directed toward a substrate. Substrate pre-marking or post-marking treatment material is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and treatment material allow for high throughput, high resolution in-situ treatment. Marking materials and treatment materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without registration. One example is a single-pass, full-color printer.Type: GrantFiled: September 30, 1998Date of Patent: February 25, 2003Assignee: Xerox CorporationInventors: Eric Peeters, Jaan Noolandi, Raj B. Apte, Philip D. Floyd, Jonathan A. Small, Gregory J. Kovacs, Meng H. Lean, Armin R. Volkel, Steven B. Bolte, An-Chang Shi, Frederick J. Endicott, Gregory B. Anderson, Dan A. Hays, Joel A. Kubby, Warren B. Jackson, Karen A. Moffat, T. Brian McAneney, Richard P. N. Veregin, Maria N. V. McDougall, Danielle C. Boils, Paul D. Szabo
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Patent number: 6521297Abstract: Disclosed is a marking material comprising (a) toner particles which comprise a resin and a colorant, said particles having an average particle diameter of no more than about 7 microns and a particle size distribution of GSD equal to no more than about 1.25, wherein said toner particles are prepared by an emulsion aggregation process, and (b) hydrophobic conductive metal oxide particles situated on the toner particles.Type: GrantFiled: May 22, 2001Date of Patent: February 18, 2003Assignee: Xerox CorporationInventors: Maria N. V. McDougall, Richard P. N. Veregin, Karen A. Moffat
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Patent number: 6503678Abstract: Disclosed is a toner comprising particles of a resin and an optional colorant, said toner particles having coated thereon a polythiophene. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a resin and an optional colorant, said toner particles having coated thereon a polythiophene.Type: GrantFiled: November 28, 2000Date of Patent: January 7, 2003Assignee: Xerox CorporationInventors: Karen A. Moffat, Maria N. V. McDougall, Rina Carlini, Dan A. Hays, Jack T. LeStrange, Paul J. Gerroir
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Patent number: 6492082Abstract: Disclosed is a toner comprising particles of a resin and an optional colorant, said toner particles having coated thereon a polypyrrole. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent, image by contacting the imaging member with charged toner particles comprising a resin and an optional colorant, said toner particles having coated thereon a polypyrrole.Type: GrantFiled: November 28, 2000Date of Patent: December 10, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall, Dan A. Hays, Jack T. LeStrange, James R. Combes
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Patent number: 6485874Abstract: Disclosed is a toner comprising particles of a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process.Type: GrantFiled: November 28, 2000Date of Patent: November 26, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Maria N. V. McDougall, Rina Carlini, Dan A. Hays, Jack T. LeStrange, Paul J. Gerroir
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Patent number: 6467871Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a head structure, said head structure having at least one channel therein, said channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through the channel to form thereby a propellant stream having kinetic energy, said channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material comprises toner particles which comprise a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), said toner particles having an average particle diameter of no more than about 10 microns and a particle size distribution of GSD equal to no more tType: GrantFiled: November 28, 2000Date of Patent: October 22, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall, Paul J. Gerroir
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Patent number: 6439711Abstract: Disclosed is a process for depositing marking material onto a substrate which includes (a) providing a propellant to a head structure, said head structure having at least one channel therein, said channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through the channel to form thereby a propellant stream having kinetic energy, said channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material comprises toner particles which comprise a polyester resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), said toner particles having an average particle diameter of no more than about 10 microns and a particle size distribution of GSD equal to no mType: GrantFiled: November 28, 2000Date of Patent: August 27, 2002Assignee: Xerox CorporationInventors: Rina Carlini, Karen A. Moffat, Maria N. V. McDougall, Danielle C. Boils
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Publication number: 20020105568Abstract: A method for treating a substrate is disclosed in which a propellant stream is passed through a channel and directed toward a substrate. Substrate pre-marking or post-marking treatment material is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and treatment material allow for high throughput, high resolution in-situ treatment. Marking materials and treatment materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without re-registration. One example is a single-pass, full-color printer.Type: ApplicationFiled: September 30, 1998Publication date: August 8, 2002Inventors: ERIC PEETERS, JAAN NOOLANDI, RAJ B. APTE, PHILIP D. FLOYD, JONATHAN A. SMALL, GREGORY J. KOVACS, MENG H. LEAN, ARMIN R. VOLKEL, STEVEN B. BOLTE, AN-CHANG SHI, FREDERICK J. ENDICOTT, GREGORY B. ANDERSON, DAN A. HAYS, JOEL A. KUBBY, WARREN B. JACKSON, KAREN A. MOFFAT, T. BRIAN MCANENEY, RICHARD P.N. VEREGIN, MARIA N.V. MCDOUGALL, DANIELLE C. BOILS, PAUL D. SZABO
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Patent number: 6387581Abstract: Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process.Type: GrantFiled: November 28, 2000Date of Patent: May 14, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall, Dan A. Hays, Jack T. LeStrange
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Patent number: 6387442Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a head structure, said head structure having at least one channel therein, said channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through the channel to form thereby a propellant stream having kinetic energy, said channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material comprises toner particles which comprise a polyester resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), said toner particles having an average particle diameter of no more than about 10 microns and a particle size distribution of GSD equal to no moType: GrantFiled: November 28, 2000Date of Patent: May 14, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Rina Carlini, Maria N. V. McDougall
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Patent number: 6383561Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a head structure, said head structure having at least one channel therein, said channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through the channel to form thereby a propellant stream having kinetic energy, said channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material comprises toner particles which comprise a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxythiophene), said toner particles having an average particle diameter of no more than about 10 microns and a particle size distribution of GSD equal to no moreType: GrantFiled: November 28, 2000Date of Patent: May 7, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Maria N. V. McDougall
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Patent number: 6365318Abstract: Disclosed is a process which comprises (a) dispersing into a solvent (i) toner particles comprising a resin and an optional colorant, and (ii) monomers selected from pyrroles, thiophenes, or mixtures thereof; and (b) causing, by exposure of the monomers to an oxidant, oxidative polymerization of the monomers onto the toner particles, wherein subsequent to polymerization, the toner particles are capable of being charged to a negative or positive polarity, and wherein the polarity is determined by the oxidant selected.Type: GrantFiled: November 28, 2000Date of Patent: April 2, 2002Assignee: Xerox CorporationInventors: Karen A. Moffat, Maria N. V. McDougall, James R. Combes
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Publication number: 20020012752Abstract: Disclosed is a marking material comprising (a) toner particles which comprise a resin and a colorant, said particles having an average particle diameter of no more than about 7 microns and a particle size distribution of GSD equal to no more than about 1.25, wherein said toner particles are prepared by an emulsion aggregation process, and (b) hydrophobic conductive metal oxide particles situated on the toner particles.Type: ApplicationFiled: May 22, 2001Publication date: January 31, 2002Applicant: Xerox CorporationInventors: Maria N. V. McDougall, Richard P. N. Veregin, Karen A. Moffat
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Patent number: 6340216Abstract: An apparatus for treating a substrate is disclosed in which a propellant stream is passed through a channel and directed toward a substrate. Substrate pre-marking or post-marking treatment material is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and treatment material allow for high throughput, high resolution in-situ treatment. Marking materials and treatment materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without registration. One example is a single-pass, full-color printer.Type: GrantFiled: September 30, 1998Date of Patent: January 22, 2002Assignee: Xerox CorporationInventors: Eric Peeters, Jaan Noolandi, Raj B. Apte, Philip D. Floyd, Jonathan A. Small, Gregory J. Kovacs, Meng H. Lean, Armin R. Volkel, Steven B. Bolte, An-Chang Shi, Frederick J. Endicott, Gregory B. Anderson, Dan A. Hays, Joel A. Kubby, Warren B. Jackson, Karen A. Moffat, T. Brian McAneney, Richard P. N. Veregin, Maria N. V. McDougall, Danielle C. Boils, Paul D. Szabo
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Patent number: 6328436Abstract: In a ballistic aerosol marking device or the like, marking material flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the provision of electrostatic marking material moving structures in or near the walls of the marking material reservoir. Marking material may be set into a continuous motion past the port and controllably extracted from the reservoir into the channel.Type: GrantFiled: December 29, 1999Date of Patent: December 11, 2001Assignee: Xerox CorporationInventors: Philip D. Floyd, David K. Biegelsen, Eric Peeters, Frederick J. Endicott, Richard P. N. Veregin, Gregory B. Anderson, Karen A. Moffat, Maria N. V. McDougall, Jaan Noolandi, Armin R. Volkel, Tuan Anh Vo, Kaiser H. Wong, Peter M. Kazmaier
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Patent number: 6309042Abstract: Disclosed is an apparatus for depositing a particulate marking material onto a substrate, comprising (a) a printhead having defined therein at least one channel, each channel having an inner surface and an exit orifice with a width no larger than about 250 microns, the inner surface of each channel having thereon a hydrophobic coating material; (b) a propellant source connected to each channel such that propellant provided by the propellant source can flow through each channel to form propellant streams therein, said propellant streams having kinetic energy, each channel directing the propellant stream through the exit orifice toward the substrate; and (c) a marking material reservoir having an inner surface, said inner surface having thereon the hydrophobic coating material, said reservoir containing particles of a particulate marking material, said reservoir being communicatively connected to each channel such that the particulate marking material from the reservoir can be controllably introduced into the pType: GrantFiled: September 30, 1999Date of Patent: October 30, 2001Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Carl P. Tripp, Maria N. V. McDougall, T. Brian McAneney
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Patent number: 6302513Abstract: A process for depositing marking material onto a substrate which includes (a) providing a propellant to a head structure, the head structure having a channel therein, the channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, the propellant flowing through the channel to form thereby a propellant stream having kinetic energy, the channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material includes particles which include a resin and a colorant, the particles having an average particle diameter of no more than about 7 microns and a particle size distribution of GSD equal to no more than about 1.25, wherein the particles are prepared by an emulsion aggregation process.Type: GrantFiled: September 30, 1999Date of Patent: October 16, 2001Assignee: Xerox CorporationInventors: Karen A. Moffat, Richard P. N. Veregin, Maria N.V. McDougall, Philip D. Floyd, Jaan Noolandi, T. Brian McAneney, Danielle C. Boils
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Patent number: 6293659Abstract: A ballistic aerosol marking device includes, marking material which flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the creation of a fluidized bed or aerosol of marking material in the reservoir. Gas flow together with mechanical or electromechanical assistance can be used to assist in the generation of the fluidized bed or aerosol.Type: GrantFiled: December 29, 1999Date of Patent: September 25, 2001Assignee: Xerox CorporationInventors: Philip D. Floyd, David K. Biegelsen, Eric Peeters, Frederick J. Endicott, Richard P. N. Veregin, Gregory B. Anderson, Karen A. Moffat, Maria N. V McDougall, Jaan Noolandi, Armin R. Volkel, Tuan Anh Vo, Kaiser H. Wong, Peter M. Kazmaier
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Patent number: 5962179Abstract: A process for the preparation of toner comprising mixing a colorant dispersion in water, which dispersion is comprised of a colorant and an ionic surfactant with a resin latex; heating the resulting flocculent mixture with stirring at a temperature of from about 25.degree. C. to about 1.degree. C. below the glass transition temperature (Tg) of the latex resin to effect formation of toner sized aggregates; heating the resulting aggregate suspension in the presence of additional anionic surfactant, and which heating is at a temperature of from about 10.degree. C. to about 55.degree. C. above the Tg of the resin; cooling; adding a base component to the resulting slurry; filtering; and thereafter drying said toner.Type: GrantFiled: November 13, 1998Date of Patent: October 5, 1999Assignee: Xerox CorporationInventors: Enno E. Agur, Francisco E. Torres, T. Hwee Ng, Allan K. Chen, Arthur Helbrecht, Maria N. V. McDougall, Richard P. N. Veregin
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Patent number: 5688626Abstract: A process for the preparation of a combination of color toners comprised of a cyan toner, a magenta toner, a yellow toner, and a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment is cyan, magenta, yellow and black, each of the said pigments are dispersed in a nonionic, or neutral charge surfactant, and wherein each toner in the combination is prepared by(i) preparing a pigment dispersion, which dispersion is comprised of a pigment and nonionic water soluble surfactant;(ii) shearing said pigment dispersion with a latex or emulsion blend comprised of resin, a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant and a nonionic surfactant;(iii) heating the above sheared blend below about the glass transition temperature (Tg) of the resin to form electrostatically bound toner size aggregates; and(iv) heating said bound toner size aggregates above about the Tg of the resin.Type: GrantFiled: April 8, 1996Date of Patent: November 18, 1997Assignee: Xerox CorporationInventors: Raj D. Patel, Grazyna E. Kmiecik-Lawrynowicz, Richard P. N. Veregin, Maria N. V. McDougall