Patents by Inventor Majid Kamel
Majid Kamel 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: 11815851Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles having at least one resin, an optional colorant, an optional wax, and a crosslinked polymer particle on at least a portion of an external surface of the toner particles. The crosslinked polymeric particle on a surface of the toner particles includes at least a hydrophobic monomer comprising a non-fluorinated monomer having a carbon to oxygen (C/O) ratio of 3 or greater or a fluorinated monomer. The crosslinked polymer particle includes a second monomer comprising two or more vinyl groups present in an amount from about 8 wt % to about 40 wt % of the copolymer, a metal oxide and optionally a charge control agent monomer.Type: GrantFiled: March 26, 2021Date of Patent: November 14, 2023Assignee: XEROX CORPORATIONInventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Cuong Vong, Sandra J. Gardner, Majid Kamel
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Patent number: 11795333Abstract: Coating compositions are provided. In embodiments, a coating composition comprises a solvent system comprising water; a crosslinked organic additive in the form of particles and comprising a polymerization product of reactants comprising a multifunctional vinyl monomer comprising two or more vinyl groups; a binder; and optionally, one or more of a colorant and a wax. Methods of making and using the coating compositions are also provided.Type: GrantFiled: May 11, 2021Date of Patent: October 24, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Majid Kamel
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Publication number: 20230159683Abstract: An organic polymeric particle including an optional first monomer comprising a hydrophobic monomer; a second monomer comprising two or more vinyl groups; an optional third monomer comprising an amine; and a vinyl siloxane polymerizable monomer.Type: ApplicationFiled: October 5, 2021Publication date: May 25, 2023Applicant: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Nan-Xing Hu, Majid Kamel, Cuong Vong
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Publication number: 20220363920Abstract: Coating compositions are provided. In embodiments, a coating composition comprises a solvent system comprising water; a crosslinked organic additive in the form of particles and comprising a polymerization product of reactants comprising a multifunctional vinyl monomer comprising two or more vinyl groups; a binder; and optionally, one or more of a colorant and a wax. Methods of making and using the coating compositions are also provided.Type: ApplicationFiled: May 11, 2021Publication date: November 17, 2022Inventors: Richard P.N. Veregin, Kimberly D. Nosella, Majid Kamel
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Publication number: 20220308487Abstract: Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles having at least one resin, an optional colorant, an optional wax, and a crosslinked polymer particle on at least a portion of an external surface of the toner particles. The crosslinked polymeric particle on a surface of the toner particles includes at least a hydrophobic monomer comprising a non-fluorinated monomer having a carbon to oxygen (C/O) ratio of 3 or greater or a fluorinated monomer. The crosslinked polymer particle includes a second monomer comprising two or more vinyl groups present in an amount from about 8 wt % to about 40 wt % of the copolymer, a metal oxide and optionally a charge control agent monomer.Type: ApplicationFiled: March 26, 2021Publication date: September 29, 2022Inventors: Richard Philip Nelson Veregin, Kimberly D. Nosella, Raysa Rodriguez Diaz, Cuong Vong, Sandra J. Gardner, Majid Kamel
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Publication number: 20200308328Abstract: A polymeric composition including a copolymer comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; and, optionally, a third monomer comprising an amine, wherein the third monomer, if present, is present in an amount of from about 0.5 percent by weight to about 5 percent by weight, based on the weight of the copolymer. A toner including the copolymer as a toner surface additive. An emulsion aggregation toner process including the copolymer as a toner surface additive.Type: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Inventors: Richard P. N. Veregin, Padam K. Angra, Maria McCall Barden, Majid Kamel, Cuong Vong, Randy P. Tin, Mark A. Jackson, John J. Ianni
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Patent number: 10358557Abstract: The present disclosure provides polymeric composition for use with toner particles. The polymeric composition of the present disclosure includes a silicone-polyether copolymer and a polymeric additive, wherein the silicone-polyether copolymer comprising a polysiloxane unit and a polyether unit, and the polymeric additive comprising a copolymer possessing at least one monomer having a high carbon to oxygen ratio, a monomer having more than one vinyl group, and at least one amine-functional monomer. The present disclosure also provides method of making thereof.Type: GrantFiled: March 7, 2018Date of Patent: July 23, 2019Assignee: XEROX CORPORATIONInventors: Richard P. N. Veregin, Nan-Xing Hu, Hajir Mokhtari, Majid Kamel, Wafa F. Bashir, Cuong Vong
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Patent number: 9612549Abstract: The present disclosure describes a cartridge with a black toner of reduced dielectric loss and improved tribo charging.Type: GrantFiled: October 10, 2015Date of Patent: April 4, 2017Assignee: XEROX CORPORATIONInventors: Daryl W Vanbesien, Majid Kamel, Cuong Vong, Suxia Yang, Kimberly Nosella, Richard P N Veregin, Tie Hwee Ng
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Patent number: 9042755Abstract: Various methods and devices transfer test patches of marking material from a marking device of a printing apparatus to a transfer surface of the printing apparatus, optically measure the density of the test patches on the transfer surface using an optical sensor of the printing apparatus, and measure the electrostatic differences in charge of the transfer surface as the test patches on the transfer surface move by an electrostatic sensor of the printing apparatus. Such methods and devices adjust settings of the marking device based on output from the electrostatic sensor alone, or based on a combination of the output from the optical sensor and converted output from the electrostatic sensor.Type: GrantFiled: October 4, 2013Date of Patent: May 26, 2015Assignee: Xerox CorporationInventors: Eric Rotberg, Richard Philip Nelson Veregin, Majid Kamel
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Publication number: 20150098718Abstract: Various methods and devices transfer test patches of marking material from a marking device of a printing apparatus to a transfer surface of the printing apparatus, optically measure the density of the test patches on the transfer surface using an optical sensor of the printing apparatus, and measure the electrostatic differences in charge of the transfer surface as the test patches on the transfer surface move by an electrostatic sensor of the printing apparatus. Such methods and devices adjust settings of the marking device based on output from the electrostatic sensor alone, or based on a combination of the output from the optical sensor and converted output from the electrostatic sensor.Type: ApplicationFiled: October 4, 2013Publication date: April 9, 2015Applicant: XEROX CORPORATIONInventors: Eric Rotberg, Richard Philip Nelson Veregin, Majid Kamel
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Publication number: 20150010861Abstract: The present disclosure describes hyperpigmented toner compositions containing a mixture of insulative color pigments, which toners exhibit reduced dielectric loss and improved tribo-charging.Type: ApplicationFiled: September 24, 2014Publication date: January 8, 2015Inventors: Richard P.N. Veregin, Daryl W. Vanbesien, Suxia Yang, Majid Kamel, Cuong Vong
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Patent number: 8846283Abstract: The present disclosure describes hyperpigmented toner compositions containing a mixture of insulative color pigments, which toners exhibit reduced dielectric loss and improved tribo-charging.Type: GrantFiled: November 28, 2012Date of Patent: September 30, 2014Assignee: Xerox CorporationInventors: Richard P N Veregin, Daryl W Vanbesien, Suxia Yang, Majid Kamel, Cuong Vong
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Publication number: 20140147781Abstract: The present disclosure describes hyperpigmented toner compositions containing a mixture of insulative color pigments, which toners exhibit reduced dielectric loss and improved tribo-charging.Type: ApplicationFiled: November 28, 2012Publication date: May 29, 2014Applicant: XEROX CORPORATIONInventors: Richard P.N. Veregin, Daryl W. Vanbesien, Suxia Yang, Majid Kamel, Cuong Vong
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Patent number: 8703377Abstract: Disclosed is a toner which comprises particles comprising: (a) a core comprising: (1) a first resin; and (2) a first conductive colorant; and (b) a shell comprising: (1) a second resin; and (2) a second conductive colorant.Type: GrantFiled: February 4, 2011Date of Patent: April 22, 2014Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D Nosella, Cuong Vong, Abdisamed Sheik-Qasim, Melanie Davis, Suxia Yang, Majid Kamel-Kasmaei, Paul J Gerroir
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Patent number: 8642241Abstract: The present teachings describe an apparatus for mixing developer. The apparatus includes a first loader for dispensing a predetermined amount of toner particles into a container and a second loader for dispensing a predetermined amount and carrier particles in the container. A sealer seals the container. An acoustic mixer is provided for mixing the container, toner particles and carrier particles at a resonant frequency. A method of mixing developer is disclosed.Type: GrantFiled: December 21, 2011Date of Patent: February 4, 2014Assignee: Xerox CorporationInventors: Majid Kamel, Suxia Yang, Richard P. N. Veregin, Michael S. Hawkins, Cuong Vong, Santiago Faucher
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Publication number: 20130164664Abstract: The present teachings describe an apparatus for mixing developer. The apparatus includes a first loader for dispensing a predetermined amount of toner particles into a container and a second loader for dispensing a predetermined amount and carrier particles in the container. A sealer seals the container. An acoustic mixer is provided for mixing the container, toner particles and carrier particles at a resonant frequency. A method of mixing developer is disclosed.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: XEROX CORPORATIONInventors: Majid Kamel, Suxia Yang, Richard P.N. Veregin, Michael S. Hawkins, Cuong Vong, Santiago Faucher
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Publication number: 20120202148Abstract: Disclosed is a toner which comprises particles comprising: (a) a core comprising: (1) a first resin; and (2) a first conductive colorant; and (b) a shell comprising: (1) a second resin; and (2) a second conductive colorant.Type: ApplicationFiled: February 4, 2011Publication date: August 9, 2012Applicant: XEROX CORPORATIONInventors: Richard P. N. Veregin, Kimberly D. Nosella, Cuong Vong, Abdisamed Sheik-Qasim, Melanie Davis, Suxia Yang, Majid Kamel-Kasmaei, Paul J. Gerroir