Patents by Inventor Judith Vandewinckel
Judith Vandewinckel 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: 20220380592Abstract: Compositions include polymer filaments compatible with fused filament fabrication, comprising: a thermoplastic polymer; and a bio-based additive admixed with the thermoplastic polymer in an effective amount to decrease total volatile organic compound (TVOC) emissions under additive manufacturing conditions, as determined by gas chromatography and measured relative to the thermoplastic polymer alone, by at least about 10% on a weight basis. Methods for forming a polymer filament compatible with fused filament fabrication may comprise: forming a melt blend comprising a thermoplastic polymer and a bio-based additive; and extruding the melt blend and cooling to form a polymer filament comprising the bio-based additive admixed with the thermoplastic polymer.Type: ApplicationFiled: June 1, 2021Publication date: December 1, 2022Applicant: Xerox CorporationInventors: Judith VANDEWINCKEL, Mark MERCANDETTI, Angela SCHNUERCH, James WINTERS
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Patent number: 11204562Abstract: Methods of making fluorescent pink toners are provided which comprise forming one or more fluorescent latexes which comprise a red fluorescent agent, a yellow fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent pink toner. Fluorescent pink toners and methods of using such toners are also provided.Type: GrantFiled: March 18, 2020Date of Patent: December 21, 2021Assignee: Xerox CorporationInventors: Yu Qi, Judith Vandewinckel, Chunliang Lu, Eliud Robles-Flores, Fan Shi
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Patent number: 11199787Abstract: Methods of making fluorescent metallic toners are provided which comprise forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising aluminum flakes and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent metallic toner. Fluorescent metallic toners and methods of using such toners are also provided.Type: GrantFiled: March 18, 2020Date of Patent: December 14, 2021Assignee: Xerox CorporationInventors: Yu Qi, Jaclyn Janis, Judith Vandewinckel, Chunliang Lu
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Patent number: 11199786Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.Type: GrantFiled: March 18, 2020Date of Patent: December 14, 2021Assignee: Xerox CorporationInventors: Yu Qi, Judith Vandewinckel, Shigeng Li, Chunliang Lu, Chieh-Min Cheng
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Publication number: 20210294231Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.Type: ApplicationFiled: March 18, 2020Publication date: September 23, 2021Inventors: Yu Qi, Judith Vandewinckel, Shigeng Li, Chunliang Lu, Chieh-Min Cheng
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Publication number: 20210294235Abstract: Methods of making fluorescent metallic toners are provided which comprise forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising aluminum flakes and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent metallic toner. Fluorescent metallic toners and methods of using such toners are also provided.Type: ApplicationFiled: March 18, 2020Publication date: September 23, 2021Inventors: Yu Qi, Jaclyn Janis, Judith Vandewinckel, Chunliang Lu
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Publication number: 20210294230Abstract: Methods of making fluorescent pink toners are provided which comprise forming one or more fluorescent latexes which comprise a red fluorescent agent, a yellow fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent pink toner. Fluorescent pink toners and methods of using such toners are also provided.Type: ApplicationFiled: March 18, 2020Publication date: September 23, 2021Inventors: Yu Qi, Judith Vandewinckel, Chunliang Lu, Eliud Robles-Flores, Fan Shi
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Patent number: 7516040Abstract: A system and method for the automated detection of printing defects in an image output device are described, employing an imaging device adjacent a photoresponsive member in the output device, wherein the imaging device generates image signals in response to developed and undeveloped regions on the photoresponsive member to identify defects therein.Type: GrantFiled: April 28, 2005Date of Patent: April 7, 2009Assignee: Xerox CorporationInventors: Gerardo Leute, Judith Vandewinckel, Stephen J. Nichols
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Publication number: 20080107988Abstract: A toner including toner particles of a styrene acrylate binder and at least one colorant, wherein the styrene acrylate binder has a weight average molecular weight of about 20 to about 30 kpse and a molecular peak of about 23 to about 28 kpse, the toner particles have a weight average molecular weight of about 28 to about 130 kpse, a number average molecular weight of about 9 to about 13.4 and a MWD of about 2.2 to about 10, and the toner particles have a cohesion of about 55 to about 98% at a mean circularity of about 0.94 to about 0.98. Also included is a set of toners for forming a color image, comprising a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of they cyan toner, the magenta toner, the yellow toner and the black toner have toner particles of about 70 to about 95% by weight, solids basis, of a styrene acrylate binder, about 5 to about 15% by weight, solids basis, of a wax dispersion, and at least one colorant.Type: ApplicationFiled: November 8, 2007Publication date: May 8, 2008Applicant: Xerox CorporationInventors: Judith VANDEWINCKEL, Vincenzo MARCELLO, Grazyna KMIECIK-LAWRYNOWICZ, Tie NG, Chieh-Min CHENG
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Publication number: 20060119877Abstract: A system and method for the automated detection of printing defects in an image output device are described, employing an imaging device adjacent a photoresponsive member in the output device, wherein the imaging device generates image signals in response to developed and undeveloped regions on the photoresponsive member to identify defects therein.Type: ApplicationFiled: April 28, 2005Publication date: June 8, 2006Inventors: Gerardo Leute, Judith Vandewinckel, Stephen Nichols
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Publication number: 20050136352Abstract: A toner including toner particles of a styrene acrylate binder and at least one colorant, wherein the styrene acrylate binder has a weight average molecular weight of about 20 to about 30 kpse and a molecular peak of about 23 to about 28 kpse, the toner particles have a weight average molecular weight of about 28 to about 130 kpse, a number average molecular weight to about 9 to about 13.4 and a MWD of about 2.2 to about 10, and the toner particles have a cohesion of about 55 to about 98% at a mean circularity of about 0.94 to about 0.98. Also included is a set of toners for forming a color image, comprising a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the cyan toner, the magenta toner, the yellow toner and the black toner have toner particles of about 70 to about 95% by weight, solids basis, of a styrene acrylate binder, about 5 to about 15% by weight, solids basis, of a wax dispersion, and at least one colorant.Type: ApplicationFiled: December 23, 2003Publication date: June 23, 2005Applicant: XEROX CORPORATIONInventors: Judith Vandewinckel, Vincenzo Marcello, Grazyna Kmiecik-Lawrynowicz, Tie Ng, Chieh-Min Cheng
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Publication number: 20050136351Abstract: A toner of the invention includes toner particles comprising a styrene acrylate binder and at least one colorant, and wherein the toner particles, in the absence of external additives, have a mean circularity of from about 0.94 to about 0.98 and a particle size distribution with a lower number ratio geometric standard deviation (GSD) of approximately 1.28 to approximately 1.31 and an upper volume GSD of approximately 1.24 to approximately 1.27. Also included is a set of toners for forming a color image, comprising a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the cyan toner, the magenta toner, the yellow toner and the black toner, wherein each of about 70 to about 95% by weight, dry basis, of a styrene acrylate binder, about 5 to about 15% by weight, dry basis, of a wax dispersion, and at least one colorant.Type: ApplicationFiled: December 23, 2003Publication date: June 23, 2005Applicant: XEROX CORPORATIONInventors: Judith Vandewinckel, Vincenzo Marcello, Grazyna Kmiecik-Lawrynowicz, Tie Ng, Chieh-Min Cheng