Patents by Inventor John S. Facci
John S. Facci 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: 10350828Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.Type: GrantFiled: August 9, 2018Date of Patent: July 16, 2019Assignee: Xerox CorporationInventors: John S. Facci, David C. Craig, David S. Derleth, Eliud Robles Flores, Varun Sambhy
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Patent number: 10201930Abstract: 3-D printers include a transfuse station having at least one roller on one side of an ITB supporting the ITB, and a transmission device on the same side of the ITB. A charge neutralizer is included on a second side of the intermediate transfer surface. The charge neutralizer outputs an opposite charge to neutralize existing static charge on a layer of the build material and the support material on the ITB, before the layer reaches the transfer station. Additionally, the intermediate transfer surface transfers the layer to a platen each time the platen contacts the second side of the intermediate transfer surface, at the transfer station, to successively form layers of the build material and the support material on the platen. Also, the transmission device outputs acoustic waves to cause the layer to move from the intermediate transfer surface to the platen, or to the layers on the platen.Type: GrantFiled: May 6, 2016Date of Patent: February 12, 2019Assignee: Xerox CorporationInventors: Eliud Robles Flores, David S. Derleth, David C. Craig, John S. Facci, Varun Sambhy
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Publication number: 20180370135Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.Type: ApplicationFiled: August 9, 2018Publication date: December 27, 2018Applicant: Xerox CorporationInventors: John S. Facci, David C. Craig, David S. Derleth, Eliud Robles Flores, Varun Sambhy
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Patent number: 10099421Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.Type: GrantFiled: May 12, 2016Date of Patent: October 16, 2018Assignee: Xerox CorporationInventors: John S. Facci, David C. Craig, David S. Derleth, Eliud Robles Flores, Varun Sambhy
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Patent number: 10005227Abstract: A 3-D printer includes a development station positioned to electrostatically transfer layers of material to an intermediate transfer surface, and a transfuse station adjacent the intermediate transfer surface. The transfuse station is positioned to receive the layers as the intermediate transfer surface moves past the transfuse station. Also, a platen is included that moves relative to the intermediate transfer surface. The intermediate transfer surface transfers a layer of the material to the platen each time the platen contacts one of the layers on the intermediate transfer surface at the transfuse station to successively form a freestanding stack of the layers on the platen. A curing station is positioned to apply ultraviolet light to each layer, after each layer is transferred from the transfuse station to the platen. The curing station selectively applies the ultraviolet light to crosslink polymers only in a portion of the material within the layer.Type: GrantFiled: May 12, 2016Date of Patent: June 26, 2018Assignee: Xerox CorporationInventors: John S. Facci, David C. Craig, Varun Sambhy, Eliud Robles Flores, David S. Derleth
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Patent number: 9857710Abstract: A support material toner particle for use in xerographic additive manufacturing includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.Type: GrantFiled: September 7, 2016Date of Patent: January 2, 2018Assignee: XEROX CORPORATIONInventors: Varun Sambhy, John S. Facci, Eliud Robles-Flores, David S. Derleth, David C. Craig
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Publication number: 20170326794Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.Type: ApplicationFiled: May 12, 2016Publication date: November 16, 2017Applicant: Xerox CorporationInventors: John S. Facci, David C. Craig, David S. Derleth, Eliud Robles Flores, Varun Sambhy
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Publication number: 20170326795Abstract: A 3-D printer includes a development station positioned to electrostatically transfer layers of material to an intermediate transfer surface, and a transfuse station adjacent the intermediate transfer surface. The transfuse station is positioned to receive the layers as the intermediate transfer surface moves past the transfuse station. Also, a platen is included that moves relative to the intermediate transfer surface. The intermediate transfer surface transfers a layer of the material to the platen each time the platen contacts one of the layers on the intermediate transfer surface at the transfuse station to successively form a freestanding stack of the layers on the platen. A curing station is positioned to apply ultraviolet light to each layer, after each layer is transferred from the transfuse station to the platen. The curing station selectively applies the ultraviolet light to crosslink polymers only in a portion of the material within the layer.Type: ApplicationFiled: May 12, 2016Publication date: November 16, 2017Applicant: Xerox CorporationInventors: John S. Facci, David C. Craig, Varun Sambhy, Eliud Robles Flores, David S. Derleth
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Publication number: 20170320269Abstract: 3-D printers include a transfuse station having at least one roller on one side of an ITB supporting the ITB, and a transmission device on the same side of the ITB. A charge neutralizer is included on a second side of the intermediate transfer surface. The charge neutralizer outputs an opposite charge to neutralize existing static charge on a layer of the build material and the support material on the ITB, before the layer reaches the transfer station. Additionally, the intermediate transfer surface transfers the layer to a platen each time the platen contacts the second side of the intermediate transfer surface, at the transfer station, to successively form layers of the build material and the support material on the platen. Also, the transmission device outputs acoustic waves to cause the layer to move from the intermediate transfer surface to the platen, or to the layers on the platen.Type: ApplicationFiled: May 6, 2016Publication date: November 9, 2017Applicant: Xerox CorporationInventors: Eliud Robles Flores, David S. Derleth, David C. Craig, John S. Facci, Varun Sambhy
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Patent number: 9170518Abstract: Disclosed is a closed-loop control method and system to control the nip width and transfer field uniformity associated with an image marking apparatus. According to an exemplary embodiment, a closed-loop control system senses the uniformity of the image transfer field and applies forces to a transfer nip based on the sensed field to provide a more uniform field.Type: GrantFiled: April 16, 2012Date of Patent: October 27, 2015Assignee: Xerox CorporationInventors: Christopher A. DiRubio, Charles H. Tabb, Michael A. Fayette, John S. Facci, Paul F. Sawicki, Thomas C. Keyes, Edward W. Schnepf, William R. Klimley
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Patent number: 8761623Abstract: An electronic development compensation method which is broadly applicable to SCMB development includes controlling image banding by actively correcting for mechanical development errors by modulating DC bias to a magnetic brush.Type: GrantFiled: June 2, 2011Date of Patent: June 24, 2014Assignee: Xerox CorporationInventors: William H Wayman, John S Facci
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Publication number: 20130272735Abstract: Disclosed is a closed-loop control method and system to control the nip width and transfer field uniformity associated with an image marking apparatus. According to an exemplary embodiment, a closed-loop control system senses the uniformity of the image transfer field and applies forces to a transfer nip based on the sensed field to provide a more uniform field.Type: ApplicationFiled: April 16, 2012Publication date: October 17, 2013Applicant: Xerox CorporationInventors: Christopher A. DiRubio, Charles H. Tabb, Michael A. Fayette, John S. Facci, Paul F. Sawicki, Thomas C. Keyes, Edward W. Schnepf, William R. Klimley
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Publication number: 20120308248Abstract: An electronic development compensation method which is broadly applicable to SCMB development includes controlling image banding by actively correcting for mechanical development errors by modulating DC bias to a magnetic brush.Type: ApplicationFiled: June 2, 2011Publication date: December 6, 2012Applicant: XEROX CORPORATIONInventors: William H. Wayman, John S. Facci
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Publication number: 20120121276Abstract: A method and apparatus can, while operating a printing device in a test mode, supply a changed transfer field to a marking material transfer device. The changed transfer field is less than or more than the standard transfer field. The method and apparatus disable operations of other marking material transfer devices of the printing device to isolate the marking material transfer device. Further, the method and apparatus compare the actual amount and/or spatial distribution of marking material transferred to a recipient surface (to which the first marking material transfer device transfers the marking material) against a predetermined standard. Then, if the actual amount of marking material transferred to the recipient surface is different than the predetermined standard, the method and apparatus can identify the first marking material transfer device as being a potential source of printing defects.Type: ApplicationFiled: November 15, 2010Publication date: May 17, 2012Applicant: XEROX CORPORATIONInventors: Christopher A. DiRubio, Charles H. Tabb, Michael A. Fayette, John S. Facci
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Patent number: 8180231Abstract: A method and apparatus can, while operating a printing device in a test mode, supply a changed transfer field to a marking material transfer device. The changed transfer field is less than or more than the standard transfer field. The method and apparatus disable operations of other marking material transfer devices of the printing device to isolate the marking material transfer device. Further, the method and apparatus compare the actual amount and/or spatial distribution of marking material transferred to a recipient surface (to which the first marking material transfer device transfers the marking material) against a predetermined standard. Then, if the actual amount of marking material transferred to the recipient surface is different than the predetermined standard, the method and apparatus can identify the first marking material transfer device as being a potential source of printing defects.Type: GrantFiled: November 15, 2010Date of Patent: May 15, 2012Assignee: Xerox CorporationInventors: Christopher A. DiRubio, Charles H. Tabb, Michael A. Fayette, John S. Facci
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Patent number: 7869739Abstract: A xerographic marking device includes an intermediate transfer unit, a media transport path and at least one two-color image-on-image (IOI) drum module. Each two-color IOI drum module includes in a process order around a photoreceptor: a) a first charging unit; b) a first exposure unit; c) a first development unit; d) a second charging unit; e) a second exposure unit; and f) a second development unit, wherein the intermediate transfer unit receives a first toned image and a second toned image from the photoreceptor in a single transfer and transfers those toner images to print media to produce a toned image on print media. In various embodiments, specific color pairings are provided.Type: GrantFiled: June 4, 2009Date of Patent: January 11, 2011Assignee: Xerox CorporationInventors: Dale R. Mashtare, Martin E. Banton, Edul N. Dalal, John S. Facci, Steve P. Hoover, John F. Knapp, Robert P. Loce, Michael J. Martin, Karen Ann Moffat, Paul W. Morehouse, William J. Nowak, Richard Philip Nelson Veregin, Thomas C. Hollar
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Publication number: 20100310272Abstract: A xerographic marking device includes an intermediate transfer unit, a media transport path and at least one two-color image-on-image (IOI) drum module. Each two-color IOI drum module includes in a process order around a photoreceptor; a) a first charging unit; b) a first exposure unit; c) a first development unit; d) a second charging unit; e) a second exposure unit; and f) a second development unit, wherein the intermediate transfer unit receives a first toned image and a second toned image from the photoreceptor in a single transfer and transfers those toner images to print media to produce a toned image on print media. In various embodiments, specific color pairings are provided.Type: ApplicationFiled: June 4, 2009Publication date: December 9, 2010Applicant: XEROX CORPORATIONInventors: Dale R. MASHTARE, Martin E. BANTON, Edul N. DALAL, John S. FACCI, Steve P. HOOVER, John F. KNAPP, Robert P. LOCE, Michael J. MARTIN, Karen Ann MOFFAT, Paul W. MOREHOUSE, William J. NOWAK, Richard Philip Nelson VEREGIN, Thomas C. HOLLAR
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Patent number: 7829250Abstract: In accordance with the invention, there are xerographic photoreceptors, image forming apparatus, and methods of forming an image on image. The xerographic photoreceptor can include a substrate and a conductive ground plane having an optical transparency disposed over the substrate, the conductive ground plane including a carbon nanotube layer, such that machine cycling of the xerographic photoreceptor can produce less than approximately a 10% change in the optical transparency of the conductive ground plane after about 100,000 or more machine cycles. The xerographic photoreceptor can also include a photosensitive layer disposed over the conductive ground plane, wherein the photosensitive layer can include a charge generator material and a charge transport material.Type: GrantFiled: December 21, 2007Date of Patent: November 9, 2010Assignee: Xerox CorporationInventors: Kock-Yee Law, John S. Facci, Edward F. Grabowski
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Patent number: 7811737Abstract: The presently disclosed embodiments are directed to release fluids or agents that are useful in release coating in toner-based technologies. More particularly, the embodiments pertain to the addition of metal chelating agents to release fluids to prevent byproduct reactions from the fusing process that would otherwise decrease fuser member life and image quality.Type: GrantFiled: October 29, 2008Date of Patent: October 12, 2010Assignee: Xerox CorporationInventors: John S. Facci, William H. Wayman
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Patent number: RE47920Abstract: A support material toner particle for use in xerographic additive manufacturing includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.Type: GrantFiled: October 23, 2018Date of Patent: March 31, 2020Assignee: XEROX CORPORATIONInventors: Varun Sambhy, John S. Facci, Eliud Robles-Flores, David S. Derleth, David C. Craig