Patents by Inventor William H. Hollenbaugh
William H. Hollenbaugh 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: 8586271Abstract: Included is an emulsion aggregation toner formulation having at least one latex and a combination of at least two waxes, wherein one wax is a synthetic wax, and another wax is a natural wax, and further including a developer containing a carrier and the just-described toner.Type: GrantFiled: March 6, 2012Date of Patent: November 19, 2013Assignee: Xerox CorporationInventors: Daniel W Asarese, Grazyna E Kmiecik-Lawrynowicz, Eugene F Young, William H Hollenbaugh, Jr., Eunhee Lee
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Patent number: 8293444Abstract: A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a MW less than 1500 is less than about 10%.Type: GrantFiled: June 24, 2009Date of Patent: October 23, 2012Assignee: Xerox CorporationInventors: John L. Pawlak, Timothy L. Lincoln, William H. Hollenbaugh, Jr., Yuhua Tong, Brendan H. Williamson
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Publication number: 20120225378Abstract: Included is an emulsion aggregation toner formulation having at least one latex and a combination of at least two waxes, wherein one wax is a synthetic wax, and another wax is a natural wax, and further including a developer containing a carrier and the just-described toner.Type: ApplicationFiled: March 6, 2012Publication date: September 6, 2012Applicant: XEROX CORPORATIONInventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Eugene F. Young, William H. Hollenbaugh, JR., Eunhee Lee
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Patent number: 7910276Abstract: Disclosed herein are emulsion aggregation toner particles having less than about 15 atomic percent oxygen in relation to a total atomic percent of 100 for all elements on the surface thereof. Such toner particles exhibit lower marks on print defects.Type: GrantFiled: July 12, 2007Date of Patent: March 22, 2011Assignee: Xerox CorporationInventors: Karen A. Moffat, Juan A. Morales-Tirado, Thomas P. Debies, William H. Hollenbaugh, Jr., Emily L. Moore, Nancy S. Hunt
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Publication number: 20100330485Abstract: A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a Mw less than 1500 is less than about 10%.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Applicant: Xerox CorporationInventors: John L. PAWLAK, Timothy L. LINCOLN, William H. HOLLENBAUGH, JR., Yuhua TONG, Brendan H. WILLIAMSON
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Patent number: 7713668Abstract: 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: GrantFiled: December 13, 2006Date of Patent: May 11, 2010Assignee: Xerox CorporationInventors: Karen A. Moffat, Emily L. Moore, Daryl W. Vanbesien, Shigang S. Qui, Vladislav Skorokhod, Edward G. Zwartz, Juan A. Morales-Tirado, William H. Hollenbaugh, Jr.
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Publication number: 20090017393Abstract: Disclosed herein are emulsion aggregation toner particles having less than about 15 atomic percent oxygen in relation to a total atomic percent of 100 for all elements on the surface thereof. Such toner particles exhibit lower marks on print defects.Type: ApplicationFiled: July 12, 2007Publication date: January 15, 2009Applicant: XEROX CORPORATIONInventors: Karen A. MOFFAT, Juan A. MORALES-TIRADO, Thomas P. DEBIES, William H. HOLLENBAUGH, Jr., Emily L. MOORE, Nancy S. HUNT
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Publication number: 20080220362Abstract: Image recording device comprising a development system including toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant, and a fuser member, such as a fluoropolymer coated fuser member, which produces images having improved document offset, vinyl offset and half-tone rub properties.Type: ApplicationFiled: March 6, 2007Publication date: September 11, 2008Applicant: XEROX CORPORATIONInventors: Emily L. MOORE, Patricia A. BURNS, Michael L. GRANDE, William H. HOLLENBAUGH, Edward G. ZWARTZ, Shigang S. QIU, Maria N.V. MCDOUGALL, Daryl W. VANBESIEN, T. Brian MCANENEY
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Publication number: 20080166646Abstract: An electrophotographic image forming apparatus comprising a photoreceptor, a conductive magnetic brush development system, and a housing in association with the conductive magnetic brush development system for a developer comprising a toner composition having emulsion/aggregation toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant, wherein the wear rate of the photoreceptor is improved.Type: ApplicationFiled: January 16, 2007Publication date: July 10, 2008Applicant: Xerox CorporationInventors: Karen A. MOFFAT, Jorge A. ALVAREZ, William H. HOLLENBAUGH, James M. CHAPPELL, Gregory D. GERBASI
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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: 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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Patent number: 7208252Abstract: Magnetic toner compositions, conductive developer compositions, and methods for producing images in a hybrid jumping development system, more specifically, in a magnetic ink character recognition system, are disclosed. The developer compositions contain coated magnetic toner particles and coated carrier particles. The toner compositions include a resin, colorant, wax, magnetic component, and surface additives of coated silica, titania, and zinc stearate.Type: GrantFiled: June 30, 2004Date of Patent: April 24, 2007Assignee: Xerox CorporationInventors: Michael L. Grande, William H. Hollenbaugh, Jr.
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Patent number: 7157200Abstract: A black toner of toner particles including at least one binder, at least one black colorant, and a package of external additives is described, wherein the at least one binder includes a styrene acrylate binder and wherein the external additives include each of a first silica having an average particle size of from about 35 to about 45 nm, a second silica having an average particle size of from about 135 to about 160 nm, and a titania having an average particle size of from about 35 to about 45 nm. Also described is a developer that includes the black toner and carrier particles comprising a core of ferrite coated with a coating comprising a polymethyl methacrylate polymer and fluoro-copolymer, carbon black and melamine beads. The black toner and developer are preferably used in a semiconductive magnetic brush development system.Type: GrantFiled: May 6, 2004Date of Patent: January 2, 2007Assignee: Xerox CorporationInventors: Mary L. Mc Stravick, Paul C. Julien, Sue E. Blaszak, William H. Hollenbaugh, Jr.
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Patent number: 6850725Abstract: An apparatus comprised of a charging component, a development component, a transport component, a photoconductive component, and a fusing component, and wherein the development component contains a toner comprising at least one binder in an optional amount of from about 85 to about 99 percent by weight, at least one colorant in an optional amount of from about 0.5 to about 15 percent by weight, and calcium stearate in an optional amount of from about 0.05 to about 2 percent by weight and wherein following triboelectric contact with carrier particles, the toner has a charge Q measured in femtocoulombs per particle diameter D measured in microns (Q/D) of from about ?0.1 to about ?1 fC/?m with a variation during development of from about 0 to about 0.25 fC/?m and wherein the distribution is substantially unimodal and possesses a peak width of from about 0.1 fC/?m to about 0.Type: GrantFiled: June 18, 2004Date of Patent: February 1, 2005Assignee: Xerox CorporationInventors: Scott M. Silence, William H. Hollenbaugh, Jr., Thomas R. Pickering, Amy L. Stamp, Roger N. Ciccarelli, Denise R. Bayley, Samuel Kaplan, Alexander N. Klymachyov, John S. Walters, Padam K. Angra
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Patent number: 6824942Abstract: A toner comprised of resin, colorant and calcium stearate.Type: GrantFiled: September 27, 2002Date of Patent: November 30, 2004Assignee: Xerox CorporationInventors: Scott M. Silence, William H. Hollenbaugh, Jr., Thomas R. Pickering, Amy L. Stamp, Roger N. Ciccarelli, Denise R. Bayley, Samuel Kaplan, Alexander N. Klymachyov, John S. Walters, Padam K. Angra
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Publication number: 20040229144Abstract: An apparatus comprised of a charging component, a development component, a transport component, a photoconductive component, and a fusing component, and wherein the development component contains a toner comprising at least one binder in an optional amount of from about 85 to about 99 percent by weight, at least one colorant in an optional amount of from about 0.5 to about 15 percent by weight, and calcium stearate in an optional amount of from about 0.05 to about 2 percent by weight and wherein following triboelectric contact with carrier particles, the toner has a charge Q measured in femtocoulombs per particle diameter D measured in microns (Q/D) of from about −0.1 to about −1 fC/&mgr;m with a variation during development of from about 0 to about 0.25 fC/&mgr;m and wherein the distribution is substantially unimodal and possesses a peak width of from about 0.1 fC/&mgr;m to about 0.Type: ApplicationFiled: June 18, 2004Publication date: November 18, 2004Applicant: Xerox CorporationInventors: Scott M. Silence, William H. Hollenbaugh, Thomas R. Pickering, Amy L. Stamp, Roger N. Ciccarelli, Denise R. Bayley, Samuel Kaplan, Alexander N. Klymachyov, John S. Walters, Padam K. Angra
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Publication number: 20040063018Abstract: A toner comprised of resin, colorant and calcium stearate.Type: ApplicationFiled: September 27, 2002Publication date: April 1, 2004Applicant: Xerox CorporationInventors: Scott M. Silence, William H. Hollenbaugh, Thomas R. Pickering, Amy L. Stamp, Roger N. Ciccarelli, Denise R. Bayley, Samuel Kaplan, Alexander N. Klymachyov, John S. Walters, Padam K. Angra
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Patent number: 6365316Abstract: A toner for particular use in devices utilizing hybrid scavengeless development includes toner particles of at least one binder, at least one colorant, and optionally one or more additives, the toner exhibiting a charge per particle diameter (Q/D) of from −0.1 to −1.0 fC/&mgr;m with a variation during development of from 0 to 0.25 fC/&mgr;m and the distribution is substantially unimodal and possesses a peak width of less than 0.5 fC/&mgr;m, and the toner has a triboelectric charge of from −25 to −70 &mgr;C/g with a variation during development of from 0 to 15 &mgr;C/g following triboelectric contact with carrier particles. Use of a toner with such properties in a hybrid scavengeless development apparatus enables images to be achieved with properties similar to that achieved in offset lithography.Type: GrantFiled: March 7, 2000Date of Patent: April 2, 2002Assignee: Xerox CorporationInventors: Amy L. Stamp, William H. Hollenbaugh, Jr., Susan J. Lafica, Timothy J. Key, Scott M. Silence, Michael J. Duggan, Merrilee A. Galloway, Dennis A. Mattison, Jr., William T. Delelys, Kenneth D. Henderson, Gerardo Leute
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Patent number: 6326119Abstract: A method of forming a toner having controlled properties for use in a developer composition finding particular use in a hybrid scavengeless development scheme includes feeding at least one binder and at least one colorant into a mixing device at a feed ratio, upon exit of the mixture from the mixing device, monitoring one or more properties of the mixture with at least one monitoring device, wherein if the monitoring indicates that the one or more properties being monitored is out of specification, removing the monitored mixture from the method and adjusting the feed ratio by adjusting the feeding of the at least one binder or of the at least one colorant, thereby retaining in-specification mixture in the method. The in-specification toner is ground, optionally together with a portion of one or more external additives, classified, and mixed with one or more external additives to obtain the toner having controlled properties.Type: GrantFiled: March 7, 2000Date of Patent: December 4, 2001Assignee: Xerox CorporationInventors: William H. Hollenbaugh, Jr., Hui Chang, Samir Kumar, Scott M. Silence, Amy L. Stamp, Susan J. Lafica, Gerardo Leute, Juan A. Morales-Tirado, Dongming Li
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Patent number: 6291121Abstract: Detection of the presence and amount of an external surface additive such as silica upon the surface of a toner is accomplished by treating the external surface additive with a fluorescent material and exposing the toner to ultraviolet light. This permits accurate quality control over the amount of the external surface additive required for the toner. The toner thus includes a binder resin and a colorant, and at least one external surface additive upon the surface of the toner, wherein the at least one external surface additive contains a fluorescent material. The fluorescent material may be a fluorescein dye.Type: GrantFiled: September 22, 2000Date of Patent: September 18, 2001Assignee: Xerox CorporationInventors: William H. Hollenbaugh, Jr., Timothy L. Lincoln, Roger N. Ciccarelli, Thomas R. Pickering, Dwight J. Tshudy, Robin L. Sheppard, Amy L. Stamp