Patents by Inventor Vincenzo G. Marcello
Vincenzo G. Marcello 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: 10067434Abstract: A continuous flow process for producing coalesced toner particles from aggregated toner particles includes continuously flowing a slurry of aggregated toner particles having a size of from about 5 microns to about 7 microns through one or more heat exchangers, wherein a residence time in the one or more heat exchangers is from about 1 second to about 15 minutes, thereby producing coalesced toner particles having a circularity of from about 0.930 to about 0.990. The aggregated toner particles comprise a polymer resin, a colorant, an aggregating agent, and an optional wax.Type: GrantFiled: March 24, 2017Date of Patent: September 4, 2018Assignee: XEROX CORPORATIONInventors: Juan A. Morales-Tirado, David John William Lawton, Vincenzo G. Marcello
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Patent number: 9798257Abstract: A method for removing volatile organic compounds (VOC's) from toner slurries is described, including the isolated toner particles generated by that method.Type: GrantFiled: December 3, 2015Date of Patent: October 24, 2017Assignee: Xerox CorporationInventors: Matthew W Croteau, Mark A Jackson, Roger B B Keeble, Harold R Judd, Munir Salman, Vincenzo G Marcello, Chieh-Min Cheng, Steven M Malachowski, Grazyna Kmiecik-Lawrynowicz, Linda S Schriever
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Publication number: 20170199472Abstract: Toner compositions comprising toner particles are described, where the toner particles have an elastic modulus in the range of about 100 Pa to about 1050 Pa and/or have a viscous modulus in the range of about 100 Pa to about 1000 Pa.Type: ApplicationFiled: March 24, 2017Publication date: July 13, 2017Inventors: Juan A. MORALES-TIRADO, David John William LAWTON, Vincenzo G. MARCELLO
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Publication number: 20170160659Abstract: A method for removing volatile organic compounds (VOC's) from toner slurries is described, including the isolated toner particles generated by that method.Type: ApplicationFiled: December 3, 2015Publication date: June 8, 2017Inventors: Matthew W Croteau, Mark A Jackson, Roger BB Keeble, Harold R Judd, Munir Salman, Vincenzo G Marcello, Chieh-Min Cheng, Steven M Malachowski, Grazyna Kmiecik-Lawrynowicz, Linda S Schriever
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Patent number: 9639015Abstract: Disclosed is toner particles having controlled and tailorable fusing characteristics. In particular, there is provided toner particles comprising styrene acrylate which have specific shape characteristics that allow for tailorable fusing characteristics without generating a detrimental effect on the blocking characteristics of such toners.Type: GrantFiled: December 10, 2013Date of Patent: May 2, 2017Assignee: XEROX CORPORATIONInventors: Juan A. Morales-Tirado, David J. W. Lawton, Edward G. Zwartz, Vincenzo G. Marcello, Yolanda E. Maldonado, David R. Kurceba
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Publication number: 20150160574Abstract: Disclosed is toner particles having controlled and tailorable fusing characteristics. In particular, there is provided toner particles comprising styrene acrylate which have specific shape characteristics that allow for tailorable fusing characteristics without generating a detrimental effect on the blocking characteristics of such toners.Type: ApplicationFiled: December 10, 2013Publication date: June 11, 2015Applicant: XEROX CORPORATIONInventors: Juan A. Morales-Tirado, David J.W. Lawton, Edward G. Zwartz, Vincenzo G. Marcello, Yolanda E. Maldonado, David R. Kurceba
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Publication number: 20150104742Abstract: Toner compositions comprising toner particles are described, where the toner particles have an elastic modulus in the range of about 100 Pa to about 1050 Pa and/or have a viscous modulus in the range of about 100 Pa to about 1000 Pa.Type: ApplicationFiled: October 11, 2013Publication date: April 16, 2015Applicant: XEROX CORPORATIONInventors: Juan A. MORALES-TIRADO, David John William LAWTON, Vincenzo G. MARCELLO
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Patent number: 8080360Abstract: A method of making toner particles, includes: mixing a latex emulsion, a colorant emulsion, an optional was emulsion, and optional additives in a first reactor to form a slurry; discharging the slurry from the first reactor to a second reactor through a homogenizer; heating the slurry in the second reactor to form aggregated particles in said slurry; discharging the aggregated particles and slurry from the second reactor to a third reactor; heating the aggregated particles and slurry in the third reactor to coalesce the aggregated particles into toner particles; discharging the toner particles and slurry from the third reactor to a fourth reactor; cooling the toner particles; optionally classifying said toner particles to remove coarse particles; and optionally washing and drying said toner particles, wherein the first reactor, second reactor, third reactor, and fourth reactor are at least two different reactors.Type: GrantFiled: July 22, 2005Date of Patent: December 20, 2011Assignee: Xerox CorporationInventors: Vincenzo G Marcello, Steven M Malachowski, Tie Hwee Ng, Chieh-Min Cheng
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Patent number: 7851116Abstract: Toner including toner particles having a calcium-containing material at least in a surface portion of the toner particle, wherein the toner particles contain calcium in an amount of from 20 ppm to about 300 ppm of calcium by dry weight of the toner. Developer including a carrier and a toner, wherein the toner includes toner particles having a calcium-containing material at least in a surface portion of the toner particles. In an emulsion aggregation process for making toner particles, the toner particles are treated with calcium. The addition of calcium to the toner particles improves toner performance by lowering cohesion and charging, thereby generating an image of high gloss.Type: GrantFiled: October 30, 2006Date of Patent: December 14, 2010Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Allan K. Chen, Cuong Vong, Vladislav Skorokhod, Eric M. Strohm, Michael S. Hawkins, Christine D. Anderson, Richard Fong, Nancy S. Hunt, Vincenzo G. Marcello
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Patent number: 7691552Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same.Type: GrantFiled: August 15, 2006Date of Patent: April 6, 2010Assignee: Xerox CorporationInventors: Vincenzo G. Marcello, Dennis A. Mattison, Jr., Steven A. VanScott, Nancy S. Hunt, Cuong Vong, Vladislav Skorokhod, Richard P. N. Veregin, Michael S. Hawkins, Tie Hwee Ng, Daryl W. Vanbesien, Christine Deborah Anderson, Liam S. Cummings, Louis V. Isganitis, Allan Chen
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Patent number: 7569321Abstract: Single component toners having a core with a first latex having a specific glass transition temperature and molecular weight, further having a shell surrounding the core with a second latex having a specific glass transition temperature and molecular weight, and additives added thereto, and processes for producing the same. In embodiments, the toner is a non-magnetic single component toner produced by emulsion aggregation methods.Type: GrantFiled: September 7, 2006Date of Patent: August 4, 2009Assignee: Xerox CorporationInventors: Dennis A. Mattison, Jr., Vincenzo G. Marcello, Steven A. VanScott, Nancy S. Hunt, Chieh-Min Cheng, Dawn M. Jacobs
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Publication number: 20080166648Abstract: Toner including toner particles having a calcium-containing material at least in a surface portion of the toner particle, wherein the toner particles contain calcium in an amount of from 20 ppm to about 300 ppm of calcium by dry weight of the toner. Developer including a carrier and a toner, wherein the toner includes toner particles having a calcium-containing material at least in a surface portion of the toner particles. In an emulsion aggregation process for making toner particles, the toner particles are treated with calcium. The addition of calcium to the toner particles improves toner performance by lowering cohesion and charging, thereby generating an image of high gloss.Type: ApplicationFiled: October 30, 2006Publication date: July 10, 2008Applicant: XEROX CORPORATIONInventors: Richard P. N. VEREGIN, Allan K. CHEN, Cuong VONG, Vladislav SKOROKHOD, Eric M. STROHM, Michael S. HAWKINS, Christine D. ANDERSON, Richard FONG, Nancy S. HUNT, Vincenzo G. MARCELLO
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Publication number: 20080063966Abstract: Single component toners having a core with a first latex having a specific glass transition temperature and molecular weight, further having a shell surrounding the core with a second latex having a specific glass transition temperature and molecular weight, and additives added thereto, and processes for producing the same. In embodiments, the toner is a non-magnetic single component toner produced by emulsion aggregation methods.Type: ApplicationFiled: September 7, 2006Publication date: March 13, 2008Inventors: Dennis A. Mattison, Vincenzo G. Marcello, Steven A. VanScott, Nancy S. Hunt, Chieh-Min Cheng, Dawn M. Jacobs
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Publication number: 20080044754Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same.Type: ApplicationFiled: August 15, 2006Publication date: February 21, 2008Inventors: Vincenzo G. Marcello, Dennis A. Mattison, Steven A. VanScott, Nancy S. Hunt, Cuong Vong, Vladislav Skorokhod, Richard P.N. Veregin, Michael S. Hawkins, Tie Hwee Ng, Daryl W. Vanbesien, Christine Deborah Anderson, Liam S. Cummings, Louis V. Isganitis, Allan Chen
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Publication number: 20080044755Abstract: Toner compositions, in embodiments, having excellent charging characteristics and excellent dispensing performance are provided.Type: ApplicationFiled: August 15, 2006Publication date: February 21, 2008Inventors: Vincenzo G. Marcello, Dennis A. Mattison, Steven A. VanScott, Kevin F. Marcell, Timothy L. Lincoln, Angela Schnuerch
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Patent number: 7041420Abstract: A toner of the invention includes toner particles comprising a styrene acrylate binder and at least one colorant, and wherein the toner particles, in the absence of external additives, have a mean circularity of from about 0.94 to about 0.98 and a particle size distribution with a lower number ratio geometric standard deviation (GSD) of approximately 1.28 to approximately 1.31 and an upper volume GSD of approximately 1.24 to approximately 1.27. Also included is a set of toners for forming a color image, comprising a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the cyan toner, the magenta toner, the yellow toner and the black toner, wherein each of about 70 to about 95% by weight, dry basis, of a styrene acrylate binder, about 5 to about 15% by weight, dry basis, of a wax dispersion, and at least one colorant.Type: GrantFiled: December 23, 2003Date of Patent: May 9, 2006Assignee: Xerox CorporationInventors: Judith M. Vandewinckel, Vincenzo G. Marcello, Grazyna E. Kmiecik-Lawrynowicz, Tie Hwee Ng, Chieh-Min Cheng
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Patent number: 6931950Abstract: A system for analyzing particles including: a source of solid particles; a sampler apparatus attached to and integral with the source of solid particles which apparatus is adapted to enable removal of small amounts of sample material from the source; a sonication cell connected to the sampling apparatus which sonication cell receives, optionally conditions, and sonicates the small amounts of sample material; a sample analysis apparatus connected to the sonication cell which sample analysis apparatus is adapted to receive, optionally further condition, and analyze the resulting sonicated sample received from the sonication cell; and a liquid pump and liquid carrying lines adapted to: withdraw aliqouts from the source; convey a withdrawn aliqout to the sonication cell and sample analysis apparatus; and flush the system free of residual aliqout contamination.Type: GrantFiled: December 13, 2001Date of Patent: August 23, 2005Assignee: Xerox CorporationInventors: Steven M. Malachowski, Vincenzo G. Marcello
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Publication number: 20030110871Abstract: A system for analyzing particles including: a source of solid particles; a sampler apparatus attached to and integral with the source of solid particles which apparatus is adapted to enable removal of small amounts of sample material from the source; a sonication cell connected to the sampling apparatus which sonication cell receives, optionally conditions, and sonicates the small amounts of sample material; a sample analysis apparatus connected to the sonication cell which sample analysis apparatus is adapted to receive, optionally further condition, and analyze the resulting sonicated sample received from the sonication cell; and a liquid pump and liquid carrying lines adapted to: withdraw aliqouts from the source; convey a withdrawn aliqout to the sonication cell and sample analysis apparatus; and flush the system free of residual aliqout contamination.Type: ApplicationFiled: December 13, 2001Publication date: June 19, 2003Applicant: Xerox CorporationInventors: Steven M. Malachowski, Vincenzo G. Marcello