Patents by Inventor Daniel W. Asarese
Daniel W. Asarese 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: 20140065527Abstract: Method of adjusting the melt flow index of a toner is described, the method including adjusting the pH of the toner after the toner particles have been coalesced and the adjusting alters the melt flow index of the toner.Type: ApplicationFiled: August 29, 2012Publication date: March 6, 2014Applicant: XEROX CORPORATIONInventor: Daniel W. ASARESE
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Patent number: 8663894Abstract: Method of adjusting the melt flow index of a toner is described, the method including adjusting the pH of the toner after the toner particles have been coalesced and the adjusting alters the melt flow index of the toner.Type: GrantFiled: August 29, 2012Date of Patent: March 4, 2014Assignee: Xerox CorporationInventor: Daniel W. Asarese
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Patent number: 8592115Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and two HMDS silicas. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry rheological properties and improved fix properties. These improved properties make this toner composition useful for higher speed printing while using less toner.Type: GrantFiled: November 24, 2010Date of Patent: November 26, 2013Assignee: Xerox CorporationInventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Robert Corleto, Samir Kumar, Juan A. Morales-Tirado, Michael F. Zona
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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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Publication number: 20130280651Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the toner particles are made by a process in which charge control agent is added and adhered to the particle surface through washing steps and is maintained through the drying steps. The process of the present embodiments impart desirable charging characteristics to the toner particles.Type: ApplicationFiled: April 23, 2012Publication date: October 24, 2013Applicant: XEROX CORPORATIONInventors: Robert D. Bayley, Maura A. Sweeney, Grazyna E. Kmiecik-Lawrynowicz, Daniel W. Asarese
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Publication number: 20130260303Abstract: A toner composition including toner particles that have a resin, an optional wax, and an optional colorant; and a surface additive at least partially coating toner particle surfaces. The surface additive includes a mixture of a hexamethyldisilazane (HMDS) surface treated silica, a sol-gel silica that is not surface treated, and a polydimethylsiloxane (PDMS) surface treated silica.Type: ApplicationFiled: April 3, 2012Publication date: October 3, 2013Applicant: XEROX CORPORATIONInventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Brian S. WANG, Robert D. BAYLEY, Maura A. SWEENEY, Daniel W. ASARESE
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Patent number: 8455171Abstract: The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a carboxylic acid may be added to materials utilized to produce a latex and reduce the particle size of the resulting latex particles and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the carboxylic acid.Type: GrantFiled: May 31, 2007Date of Patent: June 4, 2013Assignee: Xerox CorporationInventors: Robert D. Bayley, Timothy L. Lincoln, Kevin F. Marcell, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Chieh-Min Cheng, Zhen Lai
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Patent number: 8394566Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.Type: GrantFiled: November 24, 2010Date of Patent: March 12, 2013Assignee: Xerox CorporationInventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Samir Kumar, Juan A. Morales-Tirado, Michael F. Zona
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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: 8221953Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.Type: GrantFiled: May 21, 2010Date of Patent: July 17, 2012Assignee: Xerox CorporationInventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe
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Publication number: 20120129088Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: XEROX CORPORATIONInventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
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Publication number: 20120129089Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and two HMDS silicas. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry rheological properties and improved fix properties. These improved properties make this toner composition useful for higher speed printing while using less toner.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: XEROX CORPORATIONInventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Robert CORLETO, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
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Publication number: 20110287359Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.Type: ApplicationFiled: May 21, 2010Publication date: November 24, 2011Applicant: XEROX CORPORATIONInventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe
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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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Publication number: 20110086304Abstract: The present disclosure provides toners and methods for their production. In embodiments, the toner may include a core/shell configuration, with a non-crosslinked resin and a crosslinked resin in the core, with a second non-crosslinked resin in the shell, pigment/pigments and a wax possessing both branched and linear carbons.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: Xerox CorporationInventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley
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Patent number: 7781135Abstract: A toner for developing electrostatic images including emulsion aggregation toner particles with a styrene acrylate latex resin, at least one additive, at least one colorant, and a charge control agent comprising 3,5 di-tert-butylsalicyclic acid zinc salt.Type: GrantFiled: November 16, 2007Date of Patent: August 24, 2010Assignee: Xerox CorporationInventors: Daniel W Asarese, Sarah Paulson, Maura A Sweeney, Grazyna E Kmiecik-Lawrynowicz
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Patent number: 7704665Abstract: A method for developing toner for use in a single component development system, wherein the process includes a) contacting a styrene acrylate polymer binder resin having a weight average molecular weight (Mw) of from about 50 to about 100 Kpse, and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant to produce a toner blend, b) aggregating the blend by heating at a temperature at or above the glass transition temperature of the styrene acrylate resin to form an aggregated toner core; c) adding a second binder resin to the aggregated toner core to form a shell over said toner core thereby forming a core-shell toner; d) growing said core-shell toner to a desired size; e) coalescing the core-shell toner by heating at a temperature above the glass transition temperature of the second latex; and f) recovering toner particles, wherein the toner particles have an onset glass transition temperatType: GrantFiled: September 26, 2007Date of Patent: April 27, 2010Assignee: Xerox CorporationInventors: Grazyna E Kmiecik-Lawrynowicz, Daniel W Asarese, Maura A Sweeney, Robert D Bayley
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Patent number: 7704662Abstract: A toner for use in a single component development system, said toner including emulsion aggregation toner particles with a styrene acrylate polymer binder resin having a molecular weight Mw of from about 50 to about 100 Kpse and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant, wherein the toner particles have an onset glass transition temperature of from about 50° C. to about 60° C., and a circularity of from about 0.950 to about 0.990.Type: GrantFiled: September 26, 2007Date of Patent: April 27, 2010Assignee: Xerox CorporationInventors: Grazyna E Kmiecik-Lawrynowicz, Daniel W Asarese, Maura A Sweeney, Robert D Bayley
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Publication number: 20090136863Abstract: A toner for developing electrostatic images including emulsion aggregation toner particles with a styrene acrylate latex resin, at least one additive, at least one colorant, and a charge control agent comprising 3,5 di-tert-butylsalicyclic acid zinc salt.Type: ApplicationFiled: November 16, 2007Publication date: May 28, 2009Applicant: XEROX CORPORATIONInventors: Daniel W. Asarese, Sarah Paulson, Maura A. Sweeney, Grazyna E. Kmiecik-Lawrynowicz
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Publication number: 20090081576Abstract: The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a carboxylic acid may be added to materials utilized to produce a latex in forming a seed resin or a master batch which, in turn, may be utilized to form latex resins and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the carboxylic acid.Type: ApplicationFiled: September 25, 2007Publication date: March 26, 2009Inventors: Robert D. Bayley, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese