Patents by Inventor Joanne L. Lee
Joanne L. Lee 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: 20230264428Abstract: Systems and methods for manufacturing objects are provided herein. In some embodiments, a method for producing an additively manufactured object includes determining a viscosity of a curable material to be used to form the additively manufactured object. The method can include determining a temperature of the curable material, based on the viscosity. The method can further include adjusting one or more heat sources configured to heat the curable material, based on the temperature. The method can include applying energy to the curable material to form a portion of the additively manufactured object, after adjusting the one or more heat sources.Type: ApplicationFiled: February 23, 2023Publication date: August 24, 2023Inventors: Paramjot Singh, Joanne L. Lee, Viswanath Meenakshisundaram
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Publication number: 20230264427Abstract: Systems and methods for manufacturing objects are provided herein. In some embodiments, a method for producing an additively manufactured object includes applying energy to a curable material according to a set of print parameters to form a cured material layer on a build platform or on an object on the build platform. The method can also include conveying remaining material away from the build platform. The method can further include detecting, via one or more sensors, that the remaining material includes a portion of the cured material layer that has separated from the build platform or from the object. The method can subsequently include determining an adjusted set of print parameters configured to improve adhesion of cured material to the build platform or to the object.Type: ApplicationFiled: February 23, 2023Publication date: August 24, 2023Inventors: Paramjot Singh, Joanne L. Lee, Viswanath Meenakshisundaram
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Patent number: 11691435Abstract: A method and system for enabling a patterned liquid, can involve creating a heat image on an imaging blanket by selectively heating the imaging blanket with a digitally controlled energy source, and subjecting the heat image to a selective deposition of a fountain solution material to enable vapor condensation on unheated areas and vapor rejection from heated areas to generate a fountain material image.Type: GrantFiled: March 5, 2021Date of Patent: July 4, 2023Assignee: Xerox CorporationInventors: Janos Veres, David K. Biegelsen, Gregory B. Anderson, Joerg Martini, Joanne L. Lee
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Patent number: 11679556Abstract: Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets deposited on the substrate, an area proximal the substrate, or combinations thereof.Type: GrantFiled: December 8, 2020Date of Patent: June 20, 2023Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Patrick Y. Maeda, Joanne L. Lee
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Patent number: 11518086Abstract: Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets in a flight path interposed between the printhead and the substrate.Type: GrantFiled: December 8, 2020Date of Patent: December 6, 2022Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Patrick Y. Maeda, Joanne L. Lee
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Publication number: 20220281228Abstract: A method and system for enabling a patterned liquid, can involve creating a heat image on an imaging blanket by selectively heating the imaging blanket with a digitally controlled energy source, and subjecting the heat image to a selective deposition of a fountain solution material to enable vapor condensation on unheated areas and vapor rejection from heated areas to generate a fountain material image.Type: ApplicationFiled: March 5, 2021Publication date: September 8, 2022Inventors: Janos Veres, David K. Biegelsen, Gregory B. Anderson, Joerg Martini, Joanne L. Lee
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Publication number: 20220227117Abstract: Ink-based digital printing systems useful for ink printing include a secondary roller having a rotatable reimageable surface layer configured to receive fountain solution. The fountain solution layer is patterned on the secondary roller and then partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate. To achieve a very high-resolution (e.g., 1200-dpi, over 900-dpi) print with these secondary roller configurations, an equivalent very high-resolution fountain solution image needs to be transferred from the secondary roller onto the imaging blanket. To increase the resolution of the image on the secondary roller, examples include a textured surface layer added to the secondary roller for contact angle pinning the fountain solution on the roll. Approaches to introduce a micro-structure onto the surface layer of the secondary roller, and also superoleophobic surface coatings are described.Type: ApplicationFiled: January 19, 2022Publication date: July 21, 2022Inventors: Anne PLOCHOWIETZ, Robert A. STREET, David K. BIEGELSEN, Gregory B. ANDERSON, Joanne L. LEE, Joerg MARTINI, Kathryn F. MURPHY, Thomas WUNDERER
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Publication number: 20220176618Abstract: Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets in a flight path interposed between the printhead and the substrate.Type: ApplicationFiled: December 8, 2020Publication date: June 9, 2022Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Patrick Y. Maeda, Joanne L. Lee
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Publication number: 20220176630Abstract: Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets deposited on the substrate, an area proximal the substrate, or combinations thereof.Type: ApplicationFiled: December 8, 2020Publication date: June 9, 2022Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Patrick Y. Maeda, Joanne L. Lee
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Patent number: 10737483Abstract: In a digital inking system having an anilox member that carries a patterned metered layer of ink to a digital imaging member, and a doctor blade that removes excess ink from the surface of the anilox member resulting in the patterned metered layer, an overfill form roller in rolling contact with the anilox member adds an overcoat layer of ink on the patterned metered layer for transfer of both layers of ink to the digital imaging member. The overcoat layer of ink uniformly covers all regions of the anilox member and the mattered metered layer of ink, including lands of the anilox cell walls to make the combined layers of ink pattern-free.Type: GrantFiled: February 19, 2018Date of Patent: August 11, 2020Assignees: Xerox Corporation, Palo Alto Research Center IncorporatedInventors: Jack T. Lestrange, Gregory B. Anderson, Peter J. Knausdorf, Joanne L. Lee
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Publication number: 20190255833Abstract: In a digital inking system having an anilox member that carries a patterned metered layer of ink to a digital imaging member, and a doctor blade that removes excess ink from the surface of the anilox member resulting in the patterned metered layer, an overfill form roller in rolling contact with the anilox member adds an overcoat layer of ink on the patterned metered layer for transfer of both layers of ink to the digital imaging member. The overcoat layer of ink uniformly covers all regions of the anilox member and the mattered metered layer of ink, including lands of the anilox cell walls to make the combined layers of ink pattern-free.Type: ApplicationFiled: February 19, 2018Publication date: August 22, 2019Inventors: Jack T. LESTRANGE, Gregory B. ANDERSON, Peter J. KNAUSDORF, Joanne L. LEE
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Patent number: 9884480Abstract: Functional amine release agents displaying improved wetting as compared to standard silicone oils comprise a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl, in which the concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0006 meq/g and the release agents have a viscosity of 20 cSt and 10 cSt. In an in-line tandem print system, the 20 cSt release agent is used in the upstream print engine while the 10 cSt release agent is used in the downstream print engine.Type: GrantFiled: October 19, 2016Date of Patent: February 6, 2018Assignee: Xerox CorporationInventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Publication number: 20170036440Abstract: Functional amine release agents displaying improved wetting as compared to standard silicone oils comprise a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl, in which the concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0006 meq/g and the release agents have a viscosity of 20 cSt and 10 cSt. In an in-line tandem print system, the 20 cSt release agent is used in the upstream print engine while the 10 cSt release agent is used in the downstream print engine.Type: ApplicationFiled: October 19, 2016Publication date: February 9, 2017Inventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Patent number: 9481164Abstract: Functional amine release agents displaying improved wetting as compared to standard silicone oils comprise a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl, in which the concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0006 meq/g and the release agents have a viscosity of 20 cSt and 10 cSt. In an in-line tandem print system, the 20 cSt release agent is used in the upstream print engine while the 10 cSt release agent is used in the downstream print engine.Type: GrantFiled: April 24, 2014Date of Patent: November 1, 2016Assignee: Xerox CorporationInventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Patent number: 9296219Abstract: A functional amine release agent displaying reduced coefficient of friction as compared to standard silicone oils, comprises a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl. The concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0001 meq/g. According to certain embodiments, the functional amine release agent is operable to impart a coefficient of friction of about 0.5 or more to the print media, resulting in improved finishing and converting equipment interaction. The release agent may have a viscosity of about 50 cSt.Type: GrantFiled: November 11, 2015Date of Patent: March 29, 2016Assignee: Xerox CorporationInventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Publication number: 20160067956Abstract: A functional amine release agent displaying reduced coefficient of friction as compared to standard silicone oils, comprises a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl. The concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0001 meq/g. According to certain embodiments, the functional amine release agent is operable to impart a coefficient of friction of about 0.5 or more to the print media, resulting in improved finishing and converting equipment interaction. The release agent may have a viscosity of about 50 cSt.Type: ApplicationFiled: November 11, 2015Publication date: March 10, 2016Inventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Patent number: 9228102Abstract: An ink includes a C10 to C26 fatty acid and a microcrystalline wax, the ink exhibiting greater scratch resistance than a conventional ink as measured by scratch and fold testing.Type: GrantFiled: April 3, 2014Date of Patent: January 5, 2016Assignee: XEROX CORPORATIONInventors: Srinivasa R. Deshiikan, Jeffrey J. Folkins, Paul J. McConville, Joanne L. Lee
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Patent number: 9223124Abstract: A system is disclosed for measuring the crystallization of crystalline-amorphous mixtures. The system includes a sample holder. and a heating apparatus to melt a ink composition and to keep the melted ink composition at a first specified temperature for a first period of time. The system includes a cooling apparatus to receive the melted ink composition, to cool the melted ink composition and to maintain the cooled ink composition at a second specified temperature. The system includes a microscope and a video recording device to capture images of the cooled ink composition for a second period of time A video processing computer includes a memory, a processor and software instructions and the software instructions causes the computer to extract crystallization parameters about the cooled ink composition from the captured images. The crystallization parameters identify fast solidifying crystalline inks that have a short time duration from onset of crystallization until crystallization.Type: GrantFiled: April 26, 2012Date of Patent: December 29, 2015Assignee: XEROX CORPORATIONInventors: Gabriel Iftime, Jennifer L. Belelie, Peter G. Odell, Paul S. Bonino, Joanne L. Lee, Naveen Chopra
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Patent number: 9221245Abstract: A functional amine release agent displaying reduced coefficient of friction as compared to standard silicone oils, comprises a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl. The concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0001 meq/g. According to certain embodiments, the functional amine release agent is operable to impart a coefficient of friction of about 0.5 or more to the print media, resulting in improved finishing and converting equipment interaction. The release agent may have a viscosity of about 50 cSt.Type: GrantFiled: April 24, 2014Date of Patent: December 29, 2015Assignee: Xerox CorporationInventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha
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Publication number: 20150307727Abstract: Functional amine release agents displaying improved wetting as compared to standard silicone oils comprise a polydimethylsiloxane oil and a functional amine selected from the group consisting of pendant propylamines and pendant N-(2-aminoethyl)-3-aminopropyl, in which the concentration of functional amine to polydimethylsiloxane oil is approximately less than 0.0006 meq/g and the release agents have a viscosity of 20 cSt and 10 cSt. In an in-line tandem print system, the 20 cSt release agent is used in the upstream print engine while the 10 cSt release agent is used in the downstream print engine.Type: ApplicationFiled: April 24, 2014Publication date: October 29, 2015Applicant: Xerox CorporationInventors: Jason M. LeFevre, Paul J. McConville, James M. Chappell, Joanne L. Lee, Rachael L. McGrath, Santokh S. Badesha