Patents by Inventor David Gervasi
David Gervasi 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: 9643210Abstract: An inkjet printhead includes a front face having a polymer coating, the polymer coating including an oleophobic grafted polymer having a crosslinked fluoroelastomer and a perfluorinated fluorosilicone grafted to the crosslinked fluoroelastomer. The polymer coating has an ink contact angle of at least about 45 degrees and an ink slide angle of less than about 35 degrees.Type: GrantFiled: May 5, 2016Date of Patent: May 9, 2017Assignee: XEROX CORPORATIONInventors: Mandakini Kanungo, Varun Sambhy, David Gervasi, Santokh Badesha, Matthew Kelly, Peter Michael Gulvin
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Publication number: 20160243587Abstract: An inkjet printhead includes a front face having a polymer coating, the polymer coating including an oleophobic grafted polymer having a crosslinked fluoroelastomer and a perfluorinated fluorosilicone grafted to the crosslinked fluoroelastomer. The polymer coating has an ink contact angle of at least about 45 degrees and an ink slide angle of less than about 35 degrees.Type: ApplicationFiled: May 5, 2016Publication date: August 25, 2016Inventors: MANDAKINI KANUNGO, VARUN SAMBHY, DAVID GERVASI, SANTOKH BADESHA, MATTHEW KELLY, PETER MICHAEL GULVIN
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Patent number: 9353291Abstract: An inkjet printhead includes a front face having a polymer coating, the polymer coating including an oleophobic grafted polymer having a crosslinked fluoroelastomer and a perfluorinated fluorosilicone grafted to the crosslinked fluoroelastomer. The polymer coating has an ink contact angle of at least about 45 degrees and an ink slide angle of less than about 35 degrees.Type: GrantFiled: November 21, 2014Date of Patent: May 31, 2016Assignee: XEROX CORPORATIONInventors: Mandakini Kanungo, Varun Sambhy, David Gervasi, Santokh Badesha, Matthew Kelly, Peter Michael Gulvin
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Publication number: 20160145469Abstract: An inkjet printhead includes a front face having a polymer coating, the polymer coating including an oleophobic grafted polymer having a crosslinked fluoroelastomer and a perfluorinated fluorosilicone grafted to the crosslinked fluoroelastomer. The polymer coating has an ink contact angle of at least about 45 degrees and an ink slide angle of less than about 35 degrees.Type: ApplicationFiled: November 21, 2014Publication date: May 26, 2016Inventors: MANDAKINI KANUNGO, VARUN SAMBHY, DAVID GERVASI, SANTOKH BADESHA, MATTHEW KELLY, PETER MICHAEL GULVIN
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Patent number: 9056958Abstract: A fuser member includes a surface layer comprising a fluoroelastomer-perfluoropolyether composite formed from a reaction mixture comprising a fluoroelastomer and a perfluoropolyether compound. Methods of manufacturing the fuser member and printing systems comprising the fuser member are also disclosed.Type: GrantFiled: June 14, 2012Date of Patent: June 16, 2015Assignee: Xerox CorporationInventors: Mandakini Kanungo, Maryna Ornatska, David Gervasi, Santokh Badesha, Matthew M. Kelly
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Publication number: 20130338293Abstract: A fuser member includes a surface layer comprising a fluoroelastomer-perfluoropolyether composite formed from a reaction mixture comprising a fluoroelastomer and a perfluoropolyether compound. Methods of manufacturing the fuser member and printing systems comprising the fuser member are also disclosed.Type: ApplicationFiled: June 14, 2012Publication date: December 19, 2013Applicant: XEROX CORPORATIONInventors: Mandakini Kanungo, Maryna Ornatska, David Gervasi, Santokh Badesha, Matthew M. Kelly
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Patent number: 7959266Abstract: In accordance with the invention, there are jet stacks, ink jet print heads, and methods of making jet stacks and ink jet print heads. The method of making an ink jet print head can include providing a partial jet stack including a diaphragm, a plurality of port holes, and having an ink outlet side and providing a polymer planarized piezoelectric array. The method can also include bonding the polymer planarized piezoelectric array to a side opposite to the ink outlet side of the partial jet stack using an adhesive, wherein the partial jet stack is aligned such that the planarized polymer covers the plurality of port holes, and using the partial jet stack as a mask to extend the port holes through the polymer by ablating the polymer and an excess portion of the adhesive from the ink outlet side using a laser.Type: GrantFiled: March 28, 2007Date of Patent: June 14, 2011Assignee: Xerox CorporationInventors: John Richard Andrews, Pinyen Lin, David Gervasi, Bradley J. Gerner
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Publication number: 20080239022Abstract: In accordance with the invention, there are jet stacks, ink jet print heads, and methods of making jet stacks and ink jet print heads. The method of making an ink jet print head can include providing a partial jet stack including a diaphragm, a plurality of port holes, and having an ink outlet side and providing a polymer planarized piezoelectric array. The method can also include bonding the polymer planarized piezoelectric array to a side opposite to the ink outlet side of the partial jet stack using an adhesive, wherein the partial jet stack is aligned such that the planarized polymer covers the plurality of port holes, and using the partial jet stack as a mask to extend the port holes through the polymer by ablating the polymer and an excess portion of the adhesive from the ink outlet side using a laser.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Inventors: John Richard ANDREWS, Pinyen Lin, David Gervasi, Bradley J. Gerner
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Publication number: 20070109383Abstract: A process transfers an image from an intermediate imaging member onto a sheet of recording media while preserving the ability to duplex print on the sheet. The process includes generating an image on an intermediate imaging member as the intermediate imaging member rotates in a first direction, synchronizing a sheet of recording media with the image on the intermediate member as the intermediate imaging member continues to rotate in the first direction, transferring the image from the intermediate imaging member onto the sheet of recording media as the intermediate imaging member continues to rotate in the first direction, and limiting release agent on the intermediate imaging member to a level that preserves duplex printing capability on the sheet of recording media.Type: ApplicationFiled: November 14, 2005Publication date: May 17, 2007Inventors: Jeffrey Folkins, James Larson, Paul McConville, Edward Caruthers, David Gervasi, Roger Leighton, Michael Levy
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Publication number: 20070009682Abstract: Use of release fluids or agents constituting hyperbranched polymers. The three-dimensional structure imparts characteristics that make the hyperbranched polymers useful in xerographic processes. The hyperbranched polymer release fluids or agents may be used with a fuser member having a substrate, an outer layer covering the substrate, and a release coating on the outer layer, wherein the release coating includes a hyperbranched polymer.Type: ApplicationFiled: July 5, 2005Publication date: January 11, 2007Inventors: David Gervasi, George Riehle, Samuel Kaplan
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Publication number: 20060292360Abstract: A coating member includes a substrate and a coating layer over the substrate where the coating layer includes carbon nanotubes dispersed in a polymeric binder. The member, which is suitable for use in an electrostatographic printing process, can be in the form of a fuser member, a fixing member, a pressure roller, or a release agent donor member.Type: ApplicationFiled: June 28, 2005Publication date: December 28, 2006Applicant: XEROX CORPORATIONInventors: Dan Hays, David Gervasi
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Publication number: 20060228567Abstract: A fuser member component to fuse the transferred developed image to the copy substrate, wherein the fuser member includes a substrate, an outer polymeric layer, and a release agent material coating on the outer polymeric layer, and the release agent material coating includes a T-type amino-functional siloxane release agent material having amino-functional groups, and the T-type amino-functional siloxane release agent material has the following Formula I: wherein A represents —R4—X, wherein R4 represents an alkyl group having from about 1 to about 10 carbons, X represents —NH2 or —NHR5NH2 with R5 representing an alkyl group having from about 1 to about 10 carbons; R1 and R2 are the same or different and each is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryl having from about 4 to about 10 carbons, and an arylalkyl; R3 is a substituted diorganosiloxane chain having from about 1 to about 500 siloxane units; b and c are numbers and are the same or different anType: ApplicationFiled: June 5, 2006Publication date: October 12, 2006Inventors: David Gervasi, Alexander Klymachyov, Samuel Kaplan, Santokh Badesha, Douglas Wilkins, George Gibson
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Publication number: 20060110611Abstract: A fuser member having a substrate, a layer thereover including a polymer, and, on the polymeric layer, a coating of a release agent having a mixture of (a) an organosiloxane polymer concentrate containing amino-substituted organosiloxane polymers, wherein there are amino functional groups on at least some of the polymer molecules of the concentrate, the concentrate has a degree of functionality of from about 0.3 to about 0.4 mole percent, the concentrate has a viscosity of from about 800 to about 1,300 centistokes; and (b) a nonfunctional organosiloxane polymer diluent, the diluent has a viscosity of from about 100 to about 2,000 centistokes; the mixture has a degree of functionality of from about 0.05 to about 0.3 mole percent, wherein the mixture has a viscosity of from about 550 to about 1,300 centistokes, and wherein the ratio by weight of concentrate to diluent is from about 1:2 to about 1:30, and an image forming apparatus having the fuser member.Type: ApplicationFiled: November 22, 2004Publication date: May 25, 2006Inventors: Santokh Badesha, David Gervasi, George Gibson, Douglas Wilkins
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Publication number: 20060110543Abstract: A method for optimizing an amino-functional release agent for use in fusing of electrostatic toner particles in an electrostatographic reproducing apparatus, includes identifying a major failure (such as offset life and stripping life) in a fusing system of the electrostatographic reproducing apparatus; selecting an amino-functional release agent including a mixture of an amino-functional fluid diluted with a non-functional polydimethylsiloxanes, wherein the amino-functional fluid includes a functional polytrialkylsiloxanes containing measured amounts of amine functionality from either propylamino or propylamino ethylamino residues; selecting a plurality of variables associated with the amino-functional fluid including number of amines per residue, finished fluid amine concentration, concentrate fluid amine concentration and concentrate viscosity; obtaining performance data of the fusing system for the plurality of variables associated with the identified major failure; correlating the obtained performance daType: ApplicationFiled: November 22, 2004Publication date: May 25, 2006Inventors: David Gervasi, Santokh Badesha, George Gibson, Douglas Wilkins
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Publication number: 20060105177Abstract: A fuser member with a supporting substrate having an outer surface layer of a fluoroelastomer, and the fluoroelastomer outer surface layer is prepared by: a) dissolving a fluoroelastomer; b) adding and reacting a biphenyl compound and an amino silane having amino functionality to form a homogeneous fluoroelastomer solution; and c) subsequently providing a surface layer of the resulting homogeneous fluoroelastomer solution to the supporting substrate.Type: ApplicationFiled: November 15, 2004Publication date: May 18, 2006Inventors: David Gervasi, George Riehle, Laurence Lynd, Theodore Lovallo
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Publication number: 20060104679Abstract: A fuser member with a supporting substrate having an outer surface layer of a fluoroelastomer, and the fluoroelastomer outer surface layer is prepared by: a) dissolving a fluoroelastomer; b) adding and reacting a biphenyl compound and a monofunctional amine hydrocarbon compound to form a homogeneous fluoroelastomer solution; and c) subsequently providing a surface layer of the resulting homogeneous fluoroelastomer solution to the supporting substrate.Type: ApplicationFiled: November 15, 2004Publication date: May 18, 2006Inventors: David Gervasi, George Riehle, Laurence Lynd, Theodore Lovallo
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Publication number: 20060008727Abstract: A fuser member having a substrate, an outer polymeric layer, an outer polymeric layer, and a release agent material coating on the outer polymeric layer, wherein the release agent material coating includes a copolymer having the following formula: wherein A and B are the same or different, and each represents —R4—X, wherein R4 represents an alkyl group having from about 1 to about 10 carbons, X represents —NH2 or —NHR6NH2 with R6 representing an alkyl group having from about 1 to about 10 carbons; R1 and R2 are the same or different and each is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryl having from about 4 to about 10 carbons, and an arylalkyl; R3 and R5 are the same or different and each is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryl having from about 4 to about 10 carbons, an arylalkyl, and a substituted diorganosiloxane chain having from about 1 to about 500 siloxane units; b and c are numbers andType: ApplicationFiled: June 25, 2004Publication date: January 12, 2006Inventors: David Gervasi, Alexander Klymachyov, Samuel Kaplan, Santokh Badesha, Douglas Wilkins, George Gibson
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Publication number: 20050287375Abstract: A fuser member component to fuse the transferred developed image to the copy substrate, wherein the fuser member includes a substrate, an outer polymeric layer, and a release agent material coating on the outer polymeric layer, and the release agent material coating includes a T-type amino-functional siloxane release agent material having amino-functional groups, and the T-type amino-functional siloxane release agent material has the following Formula I: wherein A represents —R4—X, wherein R4 represents an alkyl group having from about 1 to about 10 carbons, X represents —NH2 or —NHR5NH2 with R5 representing an alkyl group having from about 1 to about 10 carbons; R1 and R2 are the same or different and each is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryl having from about 4 to about 10 carbons, and an arylalkyl; R3 is a substituted diorganosiloxane chain having from about 1 to about 500 siloxane units; b and c are numbers and are the same or different anType: ApplicationFiled: June 25, 2004Publication date: December 29, 2005Inventors: David Gervasi, Alexander Klymachyov, Samuel Kaplan, Santokh Badesha, Douglas Wilkins, George Gibson
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Publication number: 20050286940Abstract: A fuser member component to fuse the transferred developed image to the copy substrate, wherein the fuser member includes a substrate, an outer polymeric layer, and a release agent material coating on the outer polymeric layer, and the release agent material coating includes a blend of at least two different amino-functional siloxane release agent materials having amino-functional groups, and the at least two different amino-functional siloxane release agent materials have the following Formula I: wherein A represents —R4—X, wherein R4 represents an alkyl group having from about 1 to about 10 carbons, X represents —NH2 or —NHR5NH2 with R5 representing an alkyl group having from about 1 to about 10 carbons; R1 and R2 are the same or different and each is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryl having from about 4 to about 10 carbons, and an arylalkyl; R3 is selected from the group consisting of an alkyl having from about 1 to about 25 carbons, an aryType: ApplicationFiled: June 25, 2004Publication date: December 29, 2005Inventors: David Gervasi, Alexander Klymachyov, Samuel Kaplan, Santokh Badesha, Douglas Wilkins, George Gibson
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Patent number: D578811Type: GrantFiled: June 8, 2006Date of Patent: October 21, 2008Inventor: David Gervasi