Patents by Inventor Edward Zwartz
Edward Zwartz 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).
-
Patent number: 8685605Abstract: Toners containing encapsulated crystalline resin have lower minimum fix temperatures without charge degradation.Type: GrantFiled: April 11, 2012Date of Patent: April 1, 2014Assignee: Xerox CorportionInventors: Guerino Sacripante, Ke Zhou, Jordan Wosnick, Edward Zwartz, Michael Hawkins
-
Publication number: 20130273471Abstract: Toners containing encapsulated crystalline resin have lower minimum fix temperatures without charge degradation.Type: ApplicationFiled: April 11, 2012Publication date: October 17, 2013Applicant: Xerox CorporationInventors: Guerino Sacripante, Ke Zhou, Jordan Wosnick, Edward Zwartz, Michael Hawkins
-
Patent number: 8557368Abstract: A document comprising a substrate with a surface having cellulose hydroxy groups, an adhesion promoter present on at least a first portion of the substrate surface, and a magnetic ink image formed over the first portion of the substrate surface. The adhesion promoter comprises a silane component including at least one amino functional group and at least one of a second type of functional group that is configured to bond with cellulose hydroxyl groups in the substrate. The magnetic ink image has a magnetic signal strength of at least 80%. A corresponding printing system and a method of printing also are disclosed.Type: GrantFiled: November 2, 2007Date of Patent: October 15, 2013Assignee: Xerox CorporationInventors: Kurt I. Halfyard, T. Brian McAneney, Xan-Xing Hu, Edward Zwartz, GuiQin Song, Santokh Singh Badesha, Gordon Sisler
-
Patent number: 8067142Abstract: Disclosed herein is a xerographic print comprising a substrate having a printed image thereon comprising a low melt temperature toner, and a polyolefin wax coating formed over the printed image having a dry thickness in the range of about 0.5 to about 5 microns. The wax coating substantially prevents toner offset at temperatures up to at least 70° C. A printing system and coating method also are disclosed. The prints, printing system and method are useful for making brochures and books that will be subjected to high temperatures, pressures, and/or humidity levels, such as manuals stored in automobile glove compartments.Type: GrantFiled: December 20, 2007Date of Patent: November 29, 2011Assignee: Xerox CorporationInventors: Kurt I. Halfyard, Christine D. Anderson, Edward Zwartz, T. Brian McAneney
-
Publication number: 20090162555Abstract: Disclosed herein is a xerographic print comprising a substrate having a printed image thereon comprising a low melt temperature toner, and a polyolefin wax coating formed over the printed image having a dry thickness in the range of about 0.5 to about 5 microns. The wax coating substantially prevents toner offset at temperatures up to at least 70° C. A printing system and coating method also are disclosed. The prints, printing system and method are useful for making brochures and books that will be subjected to high temperatures, pressures, and/or humidity levels, such as manuals stored in automobile glove compartments.Type: ApplicationFiled: December 20, 2007Publication date: June 25, 2009Inventors: Kurt I. Halfyard, Christine D. Anderson, Edward Zwartz, T. Brian McAneney
-
Publication number: 20090117340Abstract: A document comprising a substrate with a surface having cellulose hydroxy groups, an adhesion promoter present on at least a first portion of the substrate surface, and a magnetic ink image formed over the first portion of the substrate surface. The adhesion promoter comprises a silane component including at least one amino functional group and at least one of a second type of functional group that is configured to bond with cellulose hydroxyl groups in the substrate. The magnetic ink image has a magnetic signal strength of at least 80%. A corresponding printing system and a method of printing also are disclosed.Type: ApplicationFiled: November 2, 2007Publication date: May 7, 2009Inventors: Kurt I. Halfyard, T. Brian McAneney, Nan-Xing Hu, Edward Zwartz, GuiQin Song, Santokh Singh Badesha, Gordon Sisler
-
Publication number: 20070211124Abstract: An ink set is made up of at least three differently colored phase change inks, for example cyan, magenta and yellow, wherein at least one of the colored phase change inks is a photochromic ink that contains a photochromic material. Upon exposure to activating radiation such as ultraviolet light, the at least one photochromic ink changes to a color different from the color of the photochromic ink prior to exposure to the activating radiation.Type: ApplicationFiled: March 9, 2006Publication date: September 13, 2007Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Christopher Wagner, C. Allen, Paul Smith, Edward Zwartz, Peter Odell, Peter Kazmaier
-
Publication number: 20070141494Abstract: A process for making toner particles comprising: (a) forming an emulsion comprising a disperse phase including a first aqueous composition and a continuous phase including molten one or more ingredients of a toner composition, wherein there is absent a toner resin solvent in the continuous phase; (b) performing a phase inversion to create a phase inversed emulsion comprising a disperse phase including toner-sized droplets comprising the molten one or more ingredients of the toner composition and a continuous phase including a second aqueous composition; and (c) solidifying the toner-sized droplets to result in toner particles.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventors: Ke Zhou, Guerino Sacripante, Edward Zwartz
-
Publication number: 20070141496Abstract: A toner composition that includes a resin substantially free of cross linking, a cross linked resin, a polyester resin as a crystalline polyester resin, and a colorant.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Applicant: Xerox CorporationInventors: Daryl VANBESIEN, Raj Patel, Karen Moffat, Edward Zwartz, Cuong Vong
-
Publication number: 20070111129Abstract: A toner composition includes a resin substantially free of cross linking and having a weight average molecular weight of from about 50,000 to about 1,000,000, a wax, a colorant, and a coagulant.Type: ApplicationFiled: November 15, 2005Publication date: May 17, 2007Applicant: XEROX CORPORATIONInventors: Raj Patel, Daryl Vanbesien, Edward Zwartz, Rosa Duque
-
Publication number: 20070111130Abstract: A toner composition includes a reactive resin substantially free of cross linking, a wax, and a colorant. The reactive resin can include reactive epoxy and carboxylic acid functional groups.Type: ApplicationFiled: November 15, 2005Publication date: May 17, 2007Applicant: XEROX CORPORATIONInventors: Daryl Vanbesien, Edward Zwartz, Guerino Sacripante, Karen Moffat, Raj Patel
-
Publication number: 20070087280Abstract: The toner includes emulsion aggregation toner particles having a core and a shell. The core includes binder including a first non-crosslinked styrene acrylate polymer and a crosslinked styrene acrylate polymer, at least one colorant, at least one wax, and aluminized silica. The shell includes a second non-crosslinked styrene acrylate polymer that is preferably the same as the non-crosslinked styrene acrylate polymer of the core. The aluminized silica is advantageously used as a coagulant in the emulsion aggregation formation of the toner. A developer containing the toner and a method of forming an image using the toner are also described.Type: ApplicationFiled: October 17, 2005Publication date: April 19, 2007Applicant: XEROX CORPORATIONInventors: Raj Patel, Edward Zwartz, Biritawit Asfaw
-
Publication number: 20070065745Abstract: The toner described herein contains toner particles containing polymer, colorant and cross-linked polymer. The cross-linked polymer is incorporated at least in the shell of the toner particles. Incorporating cross-linked polymer in the shell of the toner particles provide bumps in the surface of the toner particles. These bumps can behave as spacers. Such toner can be formed by aggregating at least polymer particles and colorant particles to form core particles; aggregating at least cross-linked polymer particles to the surface of the core particles; and coalescing the resulting particles to form toner particles.Type: ApplicationFiled: September 19, 2005Publication date: March 22, 2007Applicant: Xerox CorporationInventors: Paul Gerroir, Daryl Vanbesien, Vladislav Skorokhod, Maria McDougall, Eric Strohm, Edward Zwartz
-
Publication number: 20070057387Abstract: Various venturi configurations are described that are particularly significant for ballistic aerosol marking (BAM) applications. The specific venturi geometries enable the printing of lines having sharp edges and particular widths, using relatively low pressures.Type: ApplicationFiled: September 13, 2005Publication date: March 15, 2007Inventors: Karen Moffat, Subajinie Sathiyavanthan, Maria McDougall, Edward Zwartz, Richard Veregin, Caroline Turek
-
Publication number: 20060222991Abstract: A toner composition is provided which contains a polyester resin with hydrophilic groups and hydrophobic end groups and a colorant, wherein said polyester resin is of the formula: wherein R is an alkylene group; X is an aromatic hydrocarbon; Y is selected from the group consisting of an alkali and an alkaline earth metal salt of an arylenesulfonate or an alkylenesulfonate; R? is a hydrophobic group, and m and n represent the number of random segments of from about 50 to about 300 for n, and from about 20 to about 2,000 for m, and m is less than 20 times n.Type: ApplicationFiled: March 31, 2005Publication date: October 5, 2006Inventors: Guerino Sacripante, Ke Zhou, Richard Veregin, Edward Zwartz, Maria McDougall
-
Publication number: 20060216626Abstract: A toner having an amorphous resin, a crystalline resin, and a colorant, wherein the crystalline resin has a melting temperature of at least 70° C. and a recrystallization point of at least 47° C. exhibits improved document offset properties and improved heat cohesion. Annealing the toner further improves the heat cohesion and morphology of the toner.Type: ApplicationFiled: March 25, 2005Publication date: September 28, 2006Applicant: Xerox CorporationInventors: Guerino Sacripante, Ke Zhou, Michael Hawkins, Kimberly Nosella, Edward Zwartz, Nicoleta Mihai, Valerie Farrugia, Stephan Drappel, Paul Gerroir
-
Publication number: 20060166121Abstract: A toner process that includes a first heating of a colorant dispersion, a first polyester resin free latex emulsion, a second polyester latex emulsion, and a wax dispersion in the presence of a coagulant containing a metal ion; adding a third polyester free latex; adding an organic sequestering compound or a silicate salt sequestering compound, followed by a second heating.Type: ApplicationFiled: January 27, 2005Publication date: July 27, 2006Inventors: Raj Patel, Guerino Sacripante, Edward Zwartz, Enno Agur, Allan Chen, T. Ng, Kimberly Nosella, Cuong Vong, Karen Moffat
-
Publication number: 20060160010Abstract: A toner is disclosed that includes a toner binder of crystalline sulfonated polyester, wherein the crystalline sulfonated polyester is 90% by weight or more of the toner binder, and a colorant. In other embodiments, the toner includes a crystalline sulfonated polyester and a linear amorphous sulfonated polyester, and a colorant. In these embodiments, the crystalline sulfonated polyester is from about 20% to about 60% by weight of the toner binder and the linear amorphous sulfonated polyester is from about 40% to about 80% by weight of the toner binder. The toners possess excellent miniumum fixing temperatures in the range of from about 80° C. to about 130° C. Processes for preparing the toners are also described.Type: ApplicationFiled: January 19, 2005Publication date: July 20, 2006Applicant: XEROX CORPORATIONInventors: Raj Patel, Edward Zwartz, Guerino Sacripante, Allan Chen
-
Publication number: 20060154162Abstract: 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: ApplicationFiled: January 13, 2005Publication date: July 13, 2006Applicant: XEROX CORPORATIONInventors: Ke Zhou, Enno Agur, Wafa Bashir, Maria McDougall, Emily Moore, Shigang Qiu, Vladislav Skorokhod, Daryl Vanbesien, Edward Zwartz, Joseph Bartel, Patricia Burns, T. McAneney, Richard Veregin, Paul Gerroir
-
Publication number: 20060135650Abstract: Polymer particles comprising a cross-linked polymer core and a linear non-cross-linked polymer shell may be formed by emulsion polymerization. The polymer particles may be used in forming toner.Type: ApplicationFiled: December 16, 2004Publication date: June 22, 2006Applicant: XEROX CORPORATIONInventors: Karen Moffat, Daryl Vanbesien, Ke Zhou, Paul Gerroir, Valerie Farrugia, Maria McDougall, Edward Zwartz