Patents by Inventor Napoleon Leoni
Napoleon Leoni 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: 20220350284Abstract: A scanning carriage of a printer includes a first emitter to emit first airborne charges, a second emitter to emit second airborne charges, and a fluid ejection device interposed between the first and second emitters to deposit droplets of ink particles within a non-aqueous fluid carrier onto a print medium to form an image. The carriage is movable relative to the print medium in a first direction and an opposite second direction. In the first direction, the first emitter is to electrostatically discharge the medium and the second emitter is to induce electrostatic fixation of the ink particles relative to the medium. In the opposite second direction, the second emitter is to electrostatically discharge the medium and the first emitter is to induce electrostatic fixation of the ink particles relative to the medium.Type: ApplicationFiled: October 15, 2019Publication date: November 3, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Napoleon Leoni, Omer Gila, Rajesh Kelekar
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Patent number: 11295681Abstract: A display device includes a non e-paper portion to display a first pattern element and a passive e-paper display portion to display a second pattern element juxtaposed relative to the first pattern element.Type: GrantFiled: January 22, 2018Date of Patent: April 5, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Rares Vernica, Mark Huber, Omer Gila, Napoleon Leoni, Steven J. Simske
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Publication number: 20200357349Abstract: A display device includes a non e-paper portion to display a first pattern element and a passive e-paper display portion to display a second pattern element juxtaposed relative to the first pattern element.Type: ApplicationFiled: January 22, 2018Publication date: November 12, 2020Applicant: Hewlett-Packard Development Company, L.P.Inventors: Rares Vernica, Mark Huber, Omer Gila, Napoleon Leoni, Steven J. Simske
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Patent number: 10416782Abstract: One example includes a display device. The display device includes an electronic paper display imageable by receiving charges on an imaging surface of the electronic paper display. The display device includes an embedded chip to enable writing to the electronic paper display based on a successful authentication.Type: GrantFiled: July 29, 2014Date of Patent: September 17, 2019Assignee: Hewlett-Packard Development Company, L.P.Inventors: Henryk Birecki, Omer Gila, Boris Balacheff, Napoleon Leoni, Steven J Simske
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Patent number: 9709870Abstract: An electronic paper device includes a ground plane, a charge receiving layer, and a porous stand off layer disposed over the charge receiving layer. An active layer is interposed between the ground plane and the charge receiving layer, the active layer including a plurality of microcapsules containing charged pigments. A system for writing information to electronic paper is also provided.Type: GrantFiled: June 30, 2015Date of Patent: July 18, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Napoleon Leoni, Omer Gila, Henryk Birecki, Richard Fotland
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Publication number: 20170060263Abstract: One example includes a display device. The display device includes an electronic paper display imageable by receiving charges on an imaging surface of the electronic paper display. The display device includes an embedded chip to enable writing to the electronic paper display based on a successful authentication.Type: ApplicationFiled: July 29, 2014Publication date: March 2, 2017Inventors: Henryk Birecki, Omer Gila, BorĂs Balacheff, Napoleon Leoni, Steven J Simske
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Publication number: 20160354800Abstract: A coater assembly includes an array of side-by-side selectively closable slot portions to control pressurized fluid flow onto a substrate during relative movement between the coater assembly and the substrate to form a coating pattern on the substrate. A control module produces the coating pattern via control over selective independent closure of the slot portions based on a mapping matrix of individually addressable coatable elements.Type: ApplicationFiled: April 29, 2013Publication date: December 8, 2016Applicant: Hewlett-Packard Development Company, L.P.Inventors: Henryk Birecki, Napoleon Leoni, Omer Gila
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Patent number: 9346287Abstract: An imaging method includes coating a transfer member with an adhesion promoter in a liquid state, changing the adhesion promoter on the transfer member from the liquid state to at least one of a solid state and a get state, depositing a liquid marking agent on the solidified adhesion promoter corresponding to an image, changing a state of the adhesion promoter from the solid state to the flowable state, and transferring the liquid marking agent and the adhesion promoter in the flowable state from the transfer member to a substrate to form a hard version of the image thereon.Type: GrantFiled: October 2, 2012Date of Patent: May 24, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Henryk Birecki, Napoleon Leoni, Omer Gila, Thomas C Anthony
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Publication number: 20150301426Abstract: An electronic paper device includes a ground plane, a charge receiving layer, and a porous stand off layer disposed over the charge receiving layer. An active layer is interposed between the ground plane and the charge receiving layer, the active layer including a plurality of microcapsules containing charged pigments. A system for writing information to electronic paper is also provided.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Inventors: Napoleon Leoni, Omer Gila, Henryk Birecki, Richard Fotland
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Patent number: 9104082Abstract: An electronic paper device includes a ground plane, a charge receiving layer, and a porous stand off layer disposed over the charge receiving layer. An active layer is interposed between the ground plane and the charge receiving layer, the active layer including a plurality of microcapsules containing charged pigments. A system for writing information to electronic paper is also provided.Type: GrantFiled: June 29, 2011Date of Patent: August 11, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Napoleon Leoni, Omer Gila, Henryk Birecki, Richard Fotland
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Patent number: 8714703Abstract: Apparatus, articles of manufacture, and image forming apparatus for capturing aerosols are disclosed. An example apparatus includes a corona wire, and an excitation source to provide to the corona wire a composite signal having a direct current component and an alternating current component, the alternating current component having a cycle, a first portion of the cycle being sufficient to cause the composite signal to exceed an inception voltage at which ions are generated by the corona wire and a second portion to cause the composite signal to fall beneath the inception voltage, the excitation source to avoid causing the corona wire to substantially charge a substrate.Type: GrantFiled: April 29, 2011Date of Patent: May 6, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Napoleon Leoni, Omer Gila
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Patent number: 8493319Abstract: An electronic paper device includes a ground plane, a semi-conducting layer in electrical communication with the ground plane, and an active layer interposed between the ground plane and semiconducting layer. The active layer includes a plurality of microcapsules containing charged pigments. A method for writing to electronic paper is also presented.Type: GrantFiled: June 15, 2011Date of Patent: July 23, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Omer Gila, Napoleon Leoni, Henryk Birecki, Richard Fotland
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Publication number: 20130003162Abstract: An electronic paper device includes a ground plane, a charge receiving layer, and a porous stand off layer disposed over the charge receiving layer. An active layer is interposed between the ground plane and the charge receiving layer, the active layer including a plurality of microcapsules containing charged pigments. A system for writing information to electronic paper is also provided.Type: ApplicationFiled: June 29, 2011Publication date: January 3, 2013Inventors: Napoleon Leoni, Omer Gila, Henryk Birecki, Richard Fotland
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Publication number: 20120320001Abstract: An electronic paper device includes a ground plane, a semi-conducting layer in electrical communication with the ground plane, and an active layer interposed between the ground plane and semiconducting layer. The active layer includes a plurality of microcapsules containing charged pigments. A method for writing to electronic paper is also presented.Type: ApplicationFiled: June 15, 2011Publication date: December 20, 2012Inventors: Omer Gila, Napoleon Leoni, Henryk Birecki, Richard Fotland
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Publication number: 20120274681Abstract: Apparatus, articles of manufacture, and image forming apparatus for capturing aerosols are disclosed. An example apparatus includes a corona wire, and an excitation source to provide to the corona wire a composite signal having a direct current component and an alternating current component, the alternating current component having a cycle, a first portion of the cycle being sufficient to cause the composite signal to exceed an inception voltage at which ions are generated by the corona wire and a second portion to cause the composite signal to fall beneath the inception voltage, the excitation source to avoid causing the corona wire to substantially charge a substrate.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Inventors: Napoleon Leoni, Omer Gila
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Publication number: 20110050764Abstract: An imaging method includes coating a transfer member with an adhesion promoter in a liquid state, changing the adhesion promoter on the transfer member from the liquid state to at least one of a solid state and a gel state, depositing a liquid marking agent on the solidified adhesion promoter corresponding to an image, changing a state of the adhesion promoter from the solid state to the flowable state, and transferring the liquid marking agent and the adhesion promoter in the flowable state from the transfer member to a substrate to form a hard version of the image thereon.Type: ApplicationFiled: August 26, 2009Publication date: March 3, 2011Inventors: Henryk Birecki, Napoleon Leoni, Omer Gila, Thomas C. Anthony
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Patent number: 7760217Abstract: Imaging methods and imaging devices are described according to some aspects. According to one aspect, an imaging method includes defining a plurality of first portions of a layer of a marking agent corresponding to an image to be formed, removing the second portions of the marking agent after the defining, increasing a charge density of the first portions of the marking agent after the removing, and transferring the first portions of the marking agent after the increasing.Type: GrantFiled: April 28, 2006Date of Patent: July 20, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Richard A. Fotland, Robert A. Moore, Napoleon Leoni
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Publication number: 20080180510Abstract: A print head includes a first electrode layer including a plurality of generator electrodes, a second electrode layer including a plurality of discharge electrodes, and an insulating layer disposed between the generator electrodes of the first electrode layer and the discharge electrodes of the second electrode layer. The discharge electrodes include at least one discharge aperture extending therethrough. Each discharge aperture has an undercut region defining a discharge surface spaced from and substantially parallel to an opposed surface of the insulating layer.Type: ApplicationFiled: January 29, 2007Publication date: July 31, 2008Inventors: Richard Fotland, Eric Hanson, Napoleon Leoni, Paul McClelland