Patents by Inventor Santokh S. Badesha
Santokh S. Badesha 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: 11318760Abstract: An inkjet printer includes a dryer configured to attenuate the effects of temperature differentials arising in substrates that are caused by holes in a media transport belt and a platen covering a vacuum plenum. The dryer includes a heater, a media transport belt cooler, and a media transport belt. The media transport belt is configured to move substrates past the heater after ink images have been formed on the substrates and the media transport belt cooler is positioned to remove heat energy from the media transport belt after the media transport belt has passed the heater and the substrates have separated from the media transport belt. The substrate cooler is configured to reduce a temperature of the media transport belt to a temperature that attenuates image defects arising from temperature differentials in the media transport belt when the media transport belt is opposite the heater.Type: GrantFiled: December 23, 2019Date of Patent: May 3, 2022Assignee: Xerox CorporationInventors: Linn C. Hoover, Douglas K Herrmann, Paul J. McConville, Jason M. LeFevre, Seemit Praharaj, David A. VanKouwenberg, Michael J. Levy, Chu-heng Liu, Santokh S. Badesha, Christopher Mieney, David S. Derleth
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Patent number: 11298964Abstract: Provided herein is an imaging blanket for variable data lithography comprising (i) a substrate and (ii) a thermally-conductive composition disposed on the substrate comprising a silicone elastomer and a thermally-conductive filler selected from metal oxides, wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.6 W/m2 to about 1.6 W/m2. Further provided herein a method of making the imaging blanket, as well as a printing system comprising the imaging blanket, wherein the imaging blanket has improved thermal conductivity.Type: GrantFiled: March 28, 2019Date of Patent: April 12, 2022Assignee: XEROX CORPORATIONInventors: Varun Sambhy, Joseph Sheflin, Peter Knausdorf, Mark C. Petropoulos, Jack T. LeStrange, Santokh S. Badesha
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Publication number: 20220063317Abstract: A multilayer imaging blanket for a variable data lithography system, including a multilayer base including a sulfur-containing layer; and a cured topcoat layer including a polyurethane in contact with the sulfur-containing layer of the multilayer base.Type: ApplicationFiled: August 26, 2020Publication date: March 3, 2022Applicant: XEROX CORPORATIONInventors: Varun Sambhy, Peter J. Knausdorf, Ngoc-Tram Le, Santokh S. Badesha, Jack T. LeStrange
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Publication number: 20220049123Abstract: Provided herein is a topcoat composition comprising at least one fluorosilicone, at least one infrared-absorbing filler, and silicone dioxide present in an amount ranging from greater than about 5% to about 10%, by weight based on a total weight of the topcoat composition, wherein when the topcoat composition has a shear rate between about 2 s?1 to about 3 s?1, the topcoat composition has a viscosity ranging from about 1500 mPa/s to about 500 mPa/s and the shear rate does not decrease as the viscosity increases or decreases. Further provided herein are methods of making the topcoat composition, as well as an imaging blanket and methods of reducing coating defects on a media coated using the imaging member.Type: ApplicationFiled: August 12, 2020Publication date: February 17, 2022Applicant: XEROX CORPORATIONInventors: Kenny-Tuan T. Dinh, Kyle B. Tallman, Lin Ma, Alexander N. Klymachyov, Angela Schnuerch, Michael L. Mehan, Eric Robert Dudek, Lanhui Zhang, Varun Sambhy, Michael S. Roetker, Santokh S. Badesha
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Patent number: 11248131Abstract: A support material for use in additive manufacturing includes greater than about 30 weight percent up to about 70 weight percent of a C12 to C18 fatty alcohol ethoxylate, about 30 weight percent to about 70 weight percent of a C16 to C22 fatty alcohol, and a tackifier, a transition temperature measured as the temperature immediately before phase change, based on viscosity measurement, is less than about 65° C. A system for additive manufacturing includes such a support material and a build material, the ratio of C12 to C18 fatty alcohol ethoxylate to C16 to C22 fatty alcohol is selected for property matching of the support material to the build material. A method of additive manufacturing includes providing such a system and printing via an inkjet printer the support material and the build material to provide a precursor to a three-dimensional printed article.Type: GrantFiled: October 13, 2016Date of Patent: February 15, 2022Assignee: XEROX CORPORATIONInventors: Naveen Chopra, Baharak Bakhshaei, Carolyn Moorlag, C. Geoffrey Allen, Mandakini Kanungo, Santokh S. Badesha, Seemit Praharaj
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Patent number: 11230135Abstract: The present disclosure is directed to a multilayer imaging blanket for a variable data lithography printing system, including: a multilayer base having a lower contacting surface configured to wrap around or to be mounted on a cylinder core of the variable data lithography printing system; and a platinum catalyzed fluorosilicone surface layer opposite the lower contacting surface; wherein the multilayer base is a sulfur-free carcass including: a top layer including a sulfur-free rubber substrate such as an ethylene propylene diene monomer (EPDM) rubber substrate, a bottom layer including the lower contacting surface; and a compressible layer disposed between the top layer and the bottom layer, the compressible layer being attached to a surface of the top layer opposite the platinum catalyzed fluorosilicone surface layer and a surface of the bottom layer opposite the lower contacting surface, optionally the top layer further comprises a reinforcing fabric layer, the reinforcing fabric layer attached to a surfaType: GrantFiled: May 7, 2019Date of Patent: January 25, 2022Assignee: XEROX CORPORATIONInventors: Varun Sambhy, Lin Ma, Kyle B. Tallman, Santokh S. Badesha, Michael S. Roetker, Mark C. Petropoulos, Jack T. LeStrange, Joseph C. Sheflin, Peter J. Knausdorf, Jorge A. Alvarez
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Publication number: 20210187968Abstract: An inkjet printer includes a dryer configured to attenuate the effects of temperature differentials arising in substrates that are caused by holes in a media transport belt and a platen covering a vacuum plenum. The dryer includes a heater, a media transport belt cooler, and a media transport belt. The media transport belt is configured to move substrates past the heater after ink images have been formed on the substrates and the media transport belt cooler is positioned to remove heat energy from the media transport belt after the media transport belt has passed the heater and the substrates have separated from the media transport belt. The substrate cooler is configured to reduce a temperature of the media transport belt to a temperature that attenuates image defects arising from temperature differentials in the media transport belt when the media transport belt is opposite the heater.Type: ApplicationFiled: December 23, 2019Publication date: June 24, 2021Inventors: Linn C. Hoover, Douglas K. Herrmann, Paul J. McConville, Jason M. LeFevre, Seemit Praharaj, David A. VanKouwenberg, Michael J. Levy, Chu-heng Liu, Santokh S. Badesha, Christopher Mieney, David S. Derleth
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Publication number: 20210069972Abstract: Nozzles for an additive manufacturing device and methods for improving wettability of the nozzles are disclosed. The method may include subjecting the nozzle to a surface treatment. The surface treatment may include contacting a surface of the nozzle with one or more surface modifying agents. The surface modifying agents may include one or more of an oxidizing agent, an acid, a base, or combinations thereof. The one or more surface modifying agents may increase an oxygen content of the surface of the nozzle. An inner surface of the nozzle may have a water contact angle of greater than 1° and less than about 90°. The inner surface of the nozzle may be free or substantially free of a coating.Type: ApplicationFiled: September 10, 2020Publication date: March 11, 2021Applicant: XEROX CORPORATIONInventors: Santokh S. Badesha, Varun Sambhy, Chu-Heng Liu, Peter M. Gulvin, Mark A. Cellura, George Shannon, Gary D. Redding, Lyle G. Dingman
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Patent number: 10928754Abstract: Disclosed herein is a release fluid, a fuser member and an image forming apparatus. The release fluid is a blend an amino functional silicone fluid and a non-functional silicone fluid. The amount of the amino functional silicone fluid is from about 10 weight percent to about 90 weight percent of the release fluid. The amount of the non-functional silicone fluid is from about 10 weight percent to about 90 weight percent of the release fluid. The amount of silanol (Si—OH) is less than 200 ppm in the release fluid.Type: GrantFiled: April 13, 2018Date of Patent: February 23, 2021Assignee: Xerox CorporationInventors: Varun Sambhy, Santokh S. Badesha, Alexander N. Klymachyov, David S. Derleth, Mark A. Arnould, John R. Lambie, James E. Quigley
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Publication number: 20210016590Abstract: An imaging blanket for variable data lithography. The imaging blanket comprises a substrate. A foam layer is disposed on the substrate. An elastomeric layer is disposed on the foam layer, the elastomeric layer comprising a silicone elastomer. The elastomeric layer has a Shore A hardness ranging from about 50 Shore A to about 100 Shore A.Type: ApplicationFiled: July 18, 2019Publication date: January 21, 2021Applicant: XEROX CORPORATIONInventors: Varun Sambhy, Kyle B. Tallman, Lin Ma, Santokh S. Badesha, Michael S. Roetker
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Publication number: 20200353770Abstract: The present disclosure is directed to a multilayer imaging blanket for a variable data lithography printing system, including: a multilayer base having a lower contacting surface configured to wrap around or to be mounted on a cylinder core of the variable data lithography printing system; and a platinum catalyzed fluorosilicone surface layer opposite the lower contacting surface; wherein the multilayer base is a sulfur-free carcass including: a top layer including a sulfur-free rubber substrate such as an ethylene propylene diene monomer (EPDM) rubber substrate, a bottom layer including the lower contacting surface; and a compressible layer disposed between the top layer and the bottom layer, the compressible layer being attached to a surface of the top layer opposite the platinum catalyzed fluorosilicone surface layer and a surface of the bottom layer opposite the lower contacting surface, optionally the top layer further comprises a reinforcing fabric layer, the reinforcing fabric layer attached to a surfaType: ApplicationFiled: May 7, 2019Publication date: November 12, 2020Applicant: XEROX CORPORATIONInventors: Varun Sambhy, Lin Ma, Kyle B. Tallman, Santokh S. Badesha, Michael S. Roetker, Mark C. Petropoulos, Jack T. LeStrange, Joseph C. Sheflin, Peter J. Knausdorf, Jorge A. Alvarez
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Patent number: 10821747Abstract: A printer includes a drying unit that has a vacuum plenum and a drying belt with an exterior surface along which the media is transported through the drying unit. The drying belt has a plurality of holes extending through the drying belt, each hole in the plurality of holes having a diameter that is less than 300 microns. The drying unit further includes a heater configured to heat the media transported through the drying unit and a vacuum blower operably connected to the vacuum plenum. The vacuum blower is configured to generate a negative pressure in the vacuum plenum that holds the media on the exterior surface of the drying belt by the negative pressure acting through the plurality of holes without producing temperature differentials in the media on the belt that result in noticeable image quality defects.Type: GrantFiled: June 10, 2019Date of Patent: November 3, 2020Assignee: Xerox CorporationInventors: Christopher Mieney, David S. Derleth, Santokh S. Badesha
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Publication number: 20200307293Abstract: Provided herein is an imaging blanket for variable data lithography comprising (i) a substrate and (ii) a thermally-conductive composition disposed on the substrate comprising a silicone elastomer and a thermally-conductive filler selected from metal oxides, wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.6 W/m2 to about 1.6 W/m2. Further provided herein a method of making the imaging blanket, as well as a printing system comprising the imaging blanket, wherein the imaging blanket has improved thermal conductivity.Type: ApplicationFiled: March 28, 2019Publication date: October 1, 2020Applicant: XEROX CORPORATIONInventors: Varun Sambhy, Joseph Sheflin, Peter Knausdorf, Mark C. Petropoulos, Jack T. LeStrange, Santokh S. Badesha
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Patent number: 10773506Abstract: A process for applying a release agent and pressure sensitive adhesive to cut sheet media to thereby eliminate a separate release liner. A silicone oil plus additive release layer is applied during fusing on a top surface of cut media and then UV cured. A pressure sensitive adhesive layer is applied next. The cut sheets are then stacked and a compressive force is applied that transfers the pressure sensitive adhesive from one sheet to another and helps hold the stack together.Type: GrantFiled: April 30, 2018Date of Patent: September 15, 2020Assignee: XEROX CORPORATIONInventors: Douglas K Herrmann, Santokh S Badesha
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Publication number: 20200282759Abstract: An imaging blanket comprises a base comprising an elastic polymer and sulfur. A barrier layer is on the base and a surface layer is on the barrier layer. The surface layer comprises an elastomer and a platinum catalyst.Type: ApplicationFiled: March 7, 2019Publication date: September 10, 2020Applicant: XEROX CORPORATIONInventors: Varun Sambhy, Gary D. Redding, Santokh S. Badesha, Peter J. Nystrom, Lina Bian
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Patent number: 10710367Abstract: The present teachings describe a printhead assembly. The printhead assembly includes a first plate and a second plate stacked together. The printhead assembly includes a first adhesive between the first plate and the second plate for bonding the plates together. The printhead assembly includes a second adhesive surrounding an outer edge of the first adhesive wherein the second adhesive has an oxygen migration rate lower than an oxygen migration rate of the first adhesive. An oxygen sensitive component is contained within the outer edge of the first adhesive.Type: GrantFiled: April 22, 2019Date of Patent: July 14, 2020Assignee: Xerox CorporationInventors: Pratima Gattu Naga Rao, Sean Campbell Hunter, Christopher Jon Laharty, Jonathan Robert Brick, John Milton Brookfield, Tony Russell Rogers, Michael Joel Edwards, Hong Zhao, Mandakini Kanungo, Yanjia Zuo, Daniel R. Hahn, Santokh S. Badesha, John R. Andrews
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Publication number: 20190322098Abstract: An apparatus and method of manufacturing a fluorosilicone composite for a variable data lithography imaging member surface layer. Examples of the fluorosilicone composite include a first part and a second part, the first part having fluorosilicone, carbon black, silica and butyl acetate, the second part having a platinum catalyst, a crosslinker, butyl acetate and an inhibitor. The first part may also include a dispersant (e.g., a polyoxyalkylene amine derivative) that removes a need for shaking the dispersion by paint shaker and instead allows a more manufacture friendly roll ball milling process. The dispersant will also help in stabilizing the fluorosilicone composite for scaled up production.Type: ApplicationFiled: July 3, 2019Publication date: October 24, 2019Inventors: Santokh S. BADESHA, Mandakini KANUNGO, Kevin H. TAFT, Yu QI, Chenyu LIN
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Publication number: 20190322114Abstract: The present teachings include a transfer member, a multilayer imaging blanket and a variable data lithography system. The transfer member includes a fluorosilicone surface layer. The surface layer includes mixing a first part and a second part. The first part includes a vinyl terminated trifluoropropyl methylsiloxane, an IR absorbing filler, silica and a first solvent. The second part includes an organo platinum complex having vinyl groups, a methyl hydrosiloxanetrifluoropropyl methyl siloxane having hydrosilane groups an inhibitor and a second solvent. The molar ratio of vinyl groups to hydrosilane groups is 0.7:1.0 to about 1.3:1.0 in the mixture. The mixture of the first part and second is coated on a substrate to form the fluorosilicone surface layer.Type: ApplicationFiled: April 23, 2018Publication date: October 24, 2019Inventors: Varun Sambhy, Amy C. Porter, Lin Ma, Kyle B. Tallman, Santokh S. Badesha, Michael S. Roetker
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Publication number: 20190317438Abstract: Disclosed herein is a release fluid, a fuser member and an image forming apparatus. The release fluid is a blend an amino functional silicone fluid and a non-functional silicone fluid. The amount of the amino functional silicone fluid is from about 10 weight percent to about 90 weight percent of the release fluid. The amount of the non-functional silicone fluid is from about 10 weight percent to about 90 weight percent of the release fluid. The amount of silanol (Si—OH) is less than 200 ppm in the release fluid.Type: ApplicationFiled: April 13, 2018Publication date: October 17, 2019Inventors: Varun Sambhy, Santokh S. Badesha, Alexander N. Klymachyov, David S. Derleth, Mark A. Arnould, John R. Lambie, James E. Quigley
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Publication number: 20190317421Abstract: An emulsion aggregation (EA) toner particle for use in a xerographic apparatus having an oiled fusing system, the EA toner particle including a core including a resin, a branched ester wax having substantially no solubility in fuser oil, a coagulant, and an optional colorant. Such toners may be part of a toner composition and are useful in printing procedures such as image-on-image printing.Type: ApplicationFiled: April 13, 2018Publication date: October 17, 2019Inventors: Varun Sambhy, Alexander N. Klymachyov, Padam K. Angra, Santokh S. Badesha, Jacob W. Myers, II, Dennis A. Mattison, JR.