Patents by Inventor Susan J. LaFica
Susan J. LaFica 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: 9541851Abstract: A low energy consumption monochrome particle includes a core latex having a core a glass transition temperature and a weight average molecular weight. A shell encapsulates the core and includes a shell latex having a shell glass transition temperature and a weight average molecular weight. The glass transition temperature of the shell latex is higher than the glass transition temperature of the core latex. The weight average molecular weight of the shell latex is lower or higher than the weight average molecular weight of the core latex. The low energy consumption monochrome particles are suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.Type: GrantFiled: December 3, 2013Date of Patent: January 10, 2017Assignee: XEROX CORPORATIONInventors: Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Daniel A. Asarese, Susan J. Lafica
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Patent number: 9329512Abstract: Bio-based toner compositions that exhibit excellent performance and provide high print quality. More specifically, the present bio-based toner compositions comprise greater than 20% bio-resins but avoid the moisture sensitivity issues that bio-resins are prone to by also including one or more oil additives.Type: GrantFiled: December 9, 2014Date of Patent: May 3, 2016Assignee: XEROX CORPORATIONInventors: Varun Sambhy, Juan A. Morales-Tirado, Santokh S. Badesha, Susan J. LaFica
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Publication number: 20150153672Abstract: A low energy consumption monochrome particle includes a core latex having a core a glass transition temperature and a weight average molecular weight. A shell encapsulates the core and includes a shell latex having a shell glass transition temperature and a weight average molecular weight. The glass transition temperature of the shell latex is higher than the glass transition temperature of the core latex. The weight average molecular weight of the shell latex is lower or higher than the weight average molecular weight of the core latex. The low energy consumption monochrome particles are suitable for high speed printing in SCD systems while decreasing minimum fusing temperature, maintaining excellent hot offset and storage, and exhibiting a matte finish.Type: ApplicationFiled: December 3, 2013Publication date: June 4, 2015Applicant: XEROX CORPORATIONInventors: Grazyna E. Kmiecik-Lawrynowicz, Robert D. Bayley, Maura A. Sweeney, Daniel A. Asarese, Susan J. Lafica
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Publication number: 20150086916Abstract: Toner compositions that having spherical particles and provide stable density. The toner compositions also comprise and deliver a silicone oil to the cleaning subsystem in the image forming apparatus by incorporating an inorganic fine powder additive package that has been mixed with silicone oil in a manner such that the toner is blended with the inorganic fine powder and silicone oil.Type: ApplicationFiled: September 20, 2013Publication date: March 26, 2015Applicant: XEROX CORPORATIONInventors: JUAN A. MORALES-TIRADO, Mark E. Mang, Michael F. Zona, Samir Kumar, Susan J. LaFica
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Patent number: 8974999Abstract: Toner compositions that having spherical particles and provide stable density. The toner compositions also comprise and deliver a silicone oil to the cleaning subsystem in the image forming apparatus by incorporating an inorganic fine powder additive package that has been mixed with silicone oil in a manner such that the toner is blended with the inorganic fine powder and silicone oil.Type: GrantFiled: September 20, 2013Date of Patent: March 10, 2015Assignee: Xerox CorporationInventors: Juan A. Morales-Tirado, Mark E. Mang, Michael F. Zona, Samir Kumar, Susan J. LaFica
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Patent number: 8900787Abstract: A process includes forming particles in a latex by emulsion polymerization of a mixture including one or more monomers in an emulsion, and about 4 percent or less by weight of the mixture of a non-surfactant-based charge control agent, the non-surfactant-based charge control agent is distributed within a matrix of the particles, and forming toner particles from the particles in the latex, the toner particles supporting a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.Type: GrantFiled: May 16, 2013Date of Patent: December 2, 2014Assignee: Xerox CorporationInventors: Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Susan J. LaFica
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Publication number: 20130252162Abstract: A process includes forming particles in a latex by emulsion polymerization of a mixture including one or more monomers in an emulsion, and about 4 percent or less by weight of the mixture of a non-surfactant-based charge control agent, the non-surfactant-based charge control agent is distributed within a matrix of the particles, and forming toner particles from the particles in the latex, the toner particles supporting a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.Type: ApplicationFiled: May 16, 2013Publication date: September 26, 2013Applicant: XEROX CORPORATIONInventors: Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Susan J. LaFica
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Publication number: 20110086306Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the charge control agents include copolymers formed by an emulsion polymerization process.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: XEROX CORPORATIONInventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Susan J. LaFica, Mark E. Mang
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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: 6194117Abstract: A process including: blending carrier particles in a fluidized bed jet mill and continuously separating fine particles formed therein from the resulting blended carrier particles.Type: GrantFiled: August 26, 1999Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Lewis S. Smith, Juan M. Tirado, William H. Hollenbaugh, Jr., Scott M. Silence, K. Derek Henderson, Susan J. LaFica, Amy L. Stamp