Patents by Inventor Vladislav Skorokhod
Vladislav Skorokhod 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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Publication number: 20100015539Abstract: The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat layer positioned on the charge transport layer, and a process for preparing the same, where the overcoat layer includes an aromatic polyol binder, a hole transport molecule, and a melamine formaldehyde curing resin.Type: ApplicationFiled: July 16, 2008Publication date: January 21, 2010Applicant: XEROX CORPORATIONInventors: Yu Qi, Nan-Xing Hu, Vladislav Skorokhod, Yvan Gagnon, Ah-Mee Hor
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Patent number: 7645552Abstract: Toner compositions include a non cross linked resin; a cross linked resin or gel; a wax; and a colorant. Processes for preparing a toner include mixing a non-cross linked resin and a cross-linked resin or gel in the presence of a wax, a colorant, and a coagulant to provide toner size aggregates; adding additional non-cross linked latex to the formed aggregates thereby providing a shell over the formed aggregates; heating the shell covered aggregates to form toner; and, optionally, isolating the toner.Type: GrantFiled: December 3, 2004Date of Patent: January 12, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, Daryl Vanbesien, Enno E. Agur, Edward G. Zwartz, Maria N. V. McDougall, Emily L. Moore, Patricia A. Burns, Kimberly D. Nosella, Ke Zhou, Vladislav Skorokhod, Wafa F. Bashir, Shigang (Steven) Qiu
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Patent number: 7645551Abstract: Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes.Type: GrantFiled: March 6, 2007Date of Patent: January 12, 2010Assignee: Xerox CorporationInventors: Amgad W. Sifain, Emily L. Moore, Anthony Uttaro, Jr., Peter V. Nguyen, Jon T. Owens, Ryan Accetta, Karen A. Moffat, Vladislav Skorokhod, Cuong Vong, Wafa F. Bashir, Richard P. N. Veregin, Shigang S. Qiu
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Publication number: 20090326087Abstract: The presently disclosed embodiments are directed to a method for treating microcapsules for use in an improved imaging member, namely, in the overcoat layer. The overcoat layer is used for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a method for making the overcoat layer using the treated microcapsules is provided.Type: ApplicationFiled: June 27, 2008Publication date: December 31, 2009Applicant: XEROX CORPORATIONInventors: Kathy De Jong, Yvan Gagnon, Johann Junginger, Vladislav Skorokhod, Darren Kazmaier, Naveen Chopra
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Publication number: 20090263737Abstract: The presently disclosed embodiments are directed to an imaging member having an outermost layer formulation that includes wax particles which creates a rough surface morphology for the layer and imparts increased scratch resistance, reduced torque, and improved cleaning performance to the layer. In embodiments, the outermost layer is an overcoat layer used for an improved imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer.Type: ApplicationFiled: April 22, 2008Publication date: October 22, 2009Applicant: XEROX CORPORATIONInventors: Kathy L. De Jong, Nan-Xing Hu, Yvan Gagnon, Yu Qi, Ah-Mee Hor, Cuong Vong, Vladislav Skorokhod
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Publication number: 20090233197Abstract: The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a process for preparing the same including combining a binder, a hole transport molecule, a melamine formaldehyde crosslinking agent and an acid catalyst dissolved in an alcohol solvent to form an overcoat solution, and subsequently providing the overcoat solution onto the charge transport layer to form an overcoat layer.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Applicant: XEROX CORPORATIONInventors: Matthew A. Heuft, Nan-Xing Hu, Jennifer A. Coggan, Vladislav Skorokhod, Yvan Gagnon, Sarah Kavassalis
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Patent number: 7579128Abstract: Toner compositions of toner particles including additive particles upon an external surface of the toner particles, wherein the additive particles include crosslinked styrene containing polymer particles, exhibit reduced sensitivity to relative humidity. The crosslinked styrene containing polymer particles have an average particle size of from about 30 nm to about 300 nm, and may include styrene homopolymer particles, styrene copolymer particles or mixtures thereof. A process of reducing the relative humidity sensitivity of toner using such external surface additive is also described.Type: GrantFiled: June 11, 2008Date of Patent: August 25, 2009Assignee: Xerox CorporationInventors: Maria N. V. McDougall, Daryl Vanbesien, Allan K. Chen, Richard P. N. Veregin, Vladislav Skorokhod
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Publication number: 20090186287Abstract: Disclosed is an electrophotographic photoreceptor having a protective overcoat layer including a polyol binder; a hole transport material; a curing agent; and a surface-treated tin oxide particle filler. Also disclosed is a process for forming a photoreceptor that includes providing a photoreceptor substrate; applying a charge generating layer; applying a charge transport layer; and applying a protective overcoating layer over the substrate; such that the protective overcoat layer includes a polyol binder; a hole transport material; a curing agent; and a surface-treated tin oxide particle filler. Also included is a method of forming an image, including the disclosed photoreceptor.Type: ApplicationFiled: January 23, 2008Publication date: July 23, 2009Applicant: XEROX CORPORATIONInventors: Kathy L. DE JONG, Yu QI, Vladislav SKOROKHOD, Nan-Xing HU, Johann JUNGINGER, Markus SILVESTRI, John F. YANUS, Kenny-Tuan DINH
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Patent number: 7485400Abstract: A developer includes a carrier and a toner, wherein the toner contains toner particles of at least one binder, at least one colorant, and external additives, wherein the developer has a trimmer clogging value in relation to toner triboelectric charge and toner cohesion expressed according to the equation (?0.80+0.039×(% toner cohesion)+0.026×(toner triboelectric charge) (?C/g)) of less than or equal to about 3.2.Type: GrantFiled: April 5, 2006Date of Patent: February 3, 2009Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Cuong Vong, Vladislav Skorokhod, Jackie B. Parker, David J. Sanders
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Publication number: 20080241724Abstract: Toner compositions of toner particles including additive particles upon an external surface of the toner particles, wherein the additive particles include crosslinked styrene containing polymer particles, exhibit reduced sensitivity to relative humidity. The crosslinked styrene containing polymer particles have an average particle size of from about 30 nm to about 300 nm, and may include styrene homopolymer particles, styrene copolymer particles or mixtures thereof. A process of reducing the relative humidity sensitivity of toner using such external surface additive is also described.Type: ApplicationFiled: June 11, 2008Publication date: October 2, 2008Applicant: XEROX CORPORATIONInventors: Maria N.V. MCDOUGALL, Daryl Vanbesien, Allan K. Chen, Richard P.N. Veregin, Vladislav Skorokhod
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Publication number: 20080220359Abstract: Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes.Type: ApplicationFiled: March 6, 2007Publication date: September 11, 2008Applicant: XEROX CORPORATIONInventors: Amgad W. SIFAIN, Emily L. MOORE, Anthony UTTARO, Peter V. NGUYEN, Jon T. OWENS, Ryan ACCETTA, Karen A. MOFFAT, Vladislav SKOROKHOD, Cuong VONG, Wafa F. BASHIR, Richard P. N. VEREGIN, Shigang S. QIU
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Publication number: 20080171279Abstract: A method of predicting a Lewis acid-base relative humidity (RH) ratio in a two-component developer comprised of at least a toner and a carrier including selecting a candidate toner, selecting a candidate carrier, and determining the Lewis acid and Lewis base constants for the candidate toner and candidate carrier. In addition, calculating the Lewis acid-base RH ratio wherein the calculated Lewis acid-base RH ratio is related to charge RH ratio.Type: ApplicationFiled: January 17, 2007Publication date: July 17, 2008Applicant: XEROX CORPORATIONInventors: Richard P.N. VEREGIN, Maria N.V. MCDOUGALL, Michael S. HAWKINS, Cuong VONG, Vladislav SKOROKHOD
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Publication number: 20080166649Abstract: A toner composition having toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant. The gel latex is present in an amount of from about 3 weight percent to about 30 weight percent of the toner composition, the high Tg latex is present in an amount of from about 50 weight percent to about 95 weight percent of the toner composition, the wax is present in an amount of from about 2 weight percent to about 40 weight percent of the toner composition, and the colorant is present in an amount of from about 1 weight percent to about 25 weight percent of the toner composition.Type: ApplicationFiled: December 13, 2006Publication date: July 10, 2008Applicant: Xerox CorporationInventors: Karen A. Moffat, Emily L. Moore, Daryl W. Vanbesien, Shigang S. Qiu, Vladislav Skorokhod, Edward G. Zwartz, Juan A. Morales-Tirado, William H. Hollenbaugh
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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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Patent number: 7374849Abstract: A carrier comprised of a core, and thereover a polymer coating containing antimony tin oxide with an average diameter of from about 5 to about 90 nanometers.Type: GrantFiled: January 26, 2005Date of Patent: May 20, 2008Assignee: Xerox CorporationInventors: Vladislav Skorokhod, Maria N V. McDougall, Richard P N. Veregin, Cuong Vong, Jackie B. Parker
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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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Patent number: 7320851Abstract: Toner particles comprise resin, wax and optionally colorants, and the wax is substantially excluded from the interior core of the toner particles. Processes for preparing such toner particles comprise providing an aqueous dispersion of resin particles and optionally colorants, mixing the aqueous dispersion in presence of a coagulant, aggregating to form particles, coalescing to form fused particles, and removing the fused particles from the aqueous dispersion. Wax dispersions can be added either after mixing or during aggregation, so that wax is excluded from the core of the toner particles.Type: GrantFiled: January 13, 2005Date of Patent: January 22, 2008Assignee: Xerox CorporationInventors: Ke Zhou, Enno Eric Agur, Wafa Faisul Bashir, Maria N. V. McDougall, Emily Louise Moore, Shigang Steven Qiu, Vladislav Skorokhod, Daryl W. Vanbesien, Edward Graham Zwartz, Joseph August Bartel, Patricia Ann Burns, T. Brian McAneney, Richard P. N. Veregin, Paul Joseph Gerroir
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Patent number: 7309556Abstract: A developer includes black toner particles and carrier particles, the black toner particles including at least one binder, at least one black colorant and one or more external additives, wherein the toner particles comprise from about 7 to about 15 pph of the developer, and wherein the toner particles exhibit a triboelectric charge of from about ?25 to about ?50 ?C/g at toner particle concentrations of about 7 to about 15 pph of the developer. The developer is ideally suited for use in a high speed (greater than 100 prints per minute) semiconductive magnetic brush development apparatus. Preferably, the black toner particles include a styrene acrylate binder, and the external additives include from about 1.3 to about 2.1% by weight of the toner particles of a first silica having an average particle size of from about 35 to about 45 nm, from about 0.5 to about 1.0% by weight of the toner particles of a second silica having an average particle size of from about 135 to about 160 nm, and from about 0.Type: GrantFiled: March 21, 2005Date of Patent: December 18, 2007Assignee: Xerox CorporationInventors: Maria N. V. Mc Dougall, Richard P. N. Veregin, Vladislav Skorokhod, Mary L. Mc Stravick, Deepak R. Maniar, Paul W. Morehouse, Jr., Rachael L. Mc Grath, Jackie Parker, Shigang Qui, Mary B. Schlitzer, Michael D. Thompson, Christopher M. Pattison, Thomas C. Dombroski
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Publication number: 20070254230Abstract: A process for toner preparation includes forming toner particles by mixing an emuslion comprising at least binder resin and a colorant, aggregating the toner particles, and blending external additives with the toner particles in a blender to form a toner, wherein the blender has a blend intensity of from about 90.5 to about 100.5 W/lb, a specific blend energy of from about 20.3 to about 35.3 W-h/lb and a blender loading density of from about 0.25 to about 0.55 lb/L.Type: ApplicationFiled: June 26, 2006Publication date: November 1, 2007Applicant: XEROX CORPORATIONInventors: Juan A. Morales-Tirado, Daniel A. Harrington, William H. Hollenbaugh, Vladislav Skorokhod, Wafa F. Bashir, Jackie B. Parker, Robert E. Grace, James M. Chappell, Karen A. Moffat, Richard P.N. Veregin, Cuong Vong
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Publication number: 20070238040Abstract: A developer includes a carrier and a toner, wherein the toner contains toner particles of at least one binder, at least one colorant, and external additives, wherein the developer has a trimmer clogging value in relation to toner triboelectric charge and toner cohesion expressed according to the equation (?0.80+0.039×(% toner cohesion)×0.026×(toner triboelectric charge) (?C/g)) of less than or equal to about 3.2.Type: ApplicationFiled: April 5, 2006Publication date: October 11, 2007Applicant: XEROX CORPORATIONInventors: Richard VEREGIN, Cuong Vong, Vladislav Skorokhod, Jackie Parker, David Sanders