Patents by Inventor Eyal Negreanu
Eyal Negreanu 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: 11236248Abstract: A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.Type: GrantFiled: March 4, 2016Date of Patent: February 1, 2022Assignee: HP Indigo B.V.Inventors: Olga Kagan, Yaron Grinwald, Rada Nuchimov, Shiran Zabar, Eyal Negreanu, Guy Nesher
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Patent number: 11206738Abstract: In a method and an apparatus for forming on a substrate (214) a pattern of a material, a material layer is provided on an intermediate carrier (204) and an adhesive layer is provided on the material layer, wherein at least one of the material layer or the adhesive layer comprises a pattern corresponding to the pattern to be formed on the substrate (214). The material is transferred to the substrate (214) with the adhesive fixing the material to a surface (216) of the substrate (214).Type: GrantFiled: December 11, 2019Date of Patent: December 21, 2021Assignee: HP Indigo B.V.Inventors: Dror Kella, Eyal Negreanu, Gideon Amir, Mark Sandler, Yaron Grinwald
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Publication number: 20210373452Abstract: A print agent application assembly is disclosed. The print agent application assembly includes a print agent transfer roller to receive print agent and transfer a portion of the print agent to a photoconductive surface. The print agent application assembly may further include an electrode to provide an electric charge to the print agent transfer roller. The print agent transfer roller and the electrode may define walls of a cavity through which print agent is to pass. The electrode may comprise an aperture via which a portion of the print agent is able to exit the cavity. A method and a print apparatus are also disclosed.Type: ApplicationFiled: February 14, 2019Publication date: December 2, 2021Applicant: Hewlett- Packard Development Company, L.P.Inventors: Tal Eluk, Yaniv Yona, Eyal Negreanu
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Patent number: 10877425Abstract: In one example in accordance with the present disclosure, a fluid application device is described. The device includes an application roller to deposit a fluid containing metallic particles on a surface. A squeegee roller of the device forms a first nip with the roller and a cleaner roller forms a second nip with the application roller. A first resistive coating is disposed on a surface of the application roller.Type: GrantFiled: June 27, 2017Date of Patent: December 29, 2020Assignee: HP Indigo B.V.Inventors: Guang Jin Li, Daniel Tanchangco, Eyal Negreanu
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Publication number: 20200163222Abstract: In a method and an apparatus for forming on a substrate (214) a pattern of a material, a material layer is provided on an intermediate carrier (204) and an adhesive layer is provided on the material layer, wherein at least one of the material layer or the adhesive layer comprises a pattern corresponding to the pattern to be formed on the substrate (214). The material is transferred to the substrate (214) with the adhesive fixing the material to a surface (216) of the substrate (214).Type: ApplicationFiled: December 11, 2019Publication date: May 21, 2020Applicant: HP INDIGO B.V.Inventors: Dror Kella, Eyal Negreanu, Gideon Amir, Mark Sandler, Yaron Grinwald
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Publication number: 20200142347Abstract: In one example in accordance with the present disclosure, a fluid application device is described. The device includes an application roller to deposit a fluid containing metallic particles on a surface. A squeegee roller of the device forms a first nip with the roller and a cleaner roller forms a second nip with the application roller. A first resistive coating is disposed on a surface of the application roller.Type: ApplicationFiled: June 27, 2017Publication date: May 7, 2020Applicant: HP Indigo B.V.Inventors: Guang Jin Li, Daniel Tanchangco, Eyal Negreanu
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Patent number: 10588221Abstract: A method for forming on a substrate (108; 214) a pattern of a material, the method comprising: providing (S100) a material layer (104); providing (S104, S106) an adhesive layer (106), wherein at least one of the material layer (104) or the adhesive layer (106) comprises a pattern corresponding to the pattern to be formed on the substrate (108; 214); and transferring (S108) the material to the substrate (108; 214) with the adhesive fixing the material to a surface (110; 216) of the substrate (108; 214). This solves the problem of forming on a substrate a pattern of a material that, in general, cannot be applied to the substrate directly due to the fact that the material cannot be printed and/or has no or reduced adherence properties with respect to the substrate.Type: GrantFiled: October 31, 2012Date of Patent: March 10, 2020Assignee: HP Indigo B.V.Inventors: Dror Kella, Eyal Negreanu, Gideon Amir, Mark Sandler, Yaron Grinwald
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Publication number: 20180371279Abstract: A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.Type: ApplicationFiled: March 4, 2016Publication date: December 27, 2018Applicant: HP Indigo B.V.Inventors: Olga KAGAN, Yaron GRINWALD, Rada NUCHIMOV, Shiran ZABAR, Eyal NEGREANU, Guy NESHER
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Patent number: 10001729Abstract: A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the surface of a photo imaging member presented to the development unit with a location of a transition between an image portion and a portion of the surface of the photo imaging member not in the image portion.Type: GrantFiled: July 31, 2014Date of Patent: June 19, 2018Assignee: HP Indigo B.V.Inventors: Uri Lidai, Shmuel Borenstain, Eyal Negreanu
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Patent number: 9745488Abstract: The application relates to a method of producing an electrostatic ink composition, the method comprising: mixing a resin and a conductive pigment in a continuous mixer to form a compounded mixture comprising particles comprising the resin and the pigment; adding a liquid carrier to the compounded mixture, such that the particles comprising the resin and the conductive pigment are dispersed in the liquid carrier; and, before, during or after adding the liquid carrier to the compounded mixture: imparting a charge on the particles comprising the resin and the pigment.Type: GrantFiled: May 31, 2012Date of Patent: August 29, 2017Assignee: Hewlett-Packard Indigo B.V.Inventors: Adi Vinegrad, Ruslan Tovberg, Eyal Negreanu, Olga Kagan, Yaron Grinwald, Reut Avigdor
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Publication number: 20170205732Abstract: A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the surface of a photo imaging member presented to the development unit with a location of a transition between an image portion and a portion of the surface of the photo imaging member not in the image portion.Type: ApplicationFiled: July 31, 2014Publication date: July 20, 2017Inventors: Uri Lidai, Shmuel Borenstain, Eyal Negreanu
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Patent number: 9657189Abstract: There is provided a method of producing an electrostatic ink composition, the method comprising: mixing a resin, a liquid carrier, and a conductive metallic pigment having a coating of surfactant thereon, to form an electrostatic ink composition comprising the resin and the conductive metallic pigment dispersed in the liquid carrier. An electrostatic ink composition and a substrate are also described.Type: GrantFiled: May 31, 2012Date of Patent: May 23, 2017Assignee: Hewlett-Packard Indigo B.V.Inventors: Eyal Negreanu, Rada Nuchimov, Vladislav Kaploun, Gregory Katz, Inbar Adi, Yaron Grinwald, Reut Avigdor
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Publication number: 20150351250Abstract: A method for forming on a substrate (108; 214) a pattern of a material, the method comprising: providing (S100) a material layer (104); providing (S104, S106) an adhesive layer (106), wherein at least one of the material layer (104) or the adhesive layer (106) comprises a pattern corresponding to the pattern to be formed on the substrate (108; 214); and transferring (S108) the material to the substrate (108; 214) with the adhesive fixing the material to a surface (110; 216) of the substrate (108; 214). This solves the problem of forming on a substrate a pattern of a material that, in general, cannot be applied to the substrate directly due to the fact that the material cannot be printed and/or has no or reduced adherence properties with respect to the substrate.Type: ApplicationFiled: October 31, 2012Publication date: December 3, 2015Applicant: HEWLETT-PACKARD INDIGO B.V.Inventors: Dror KELLA, Eyal NEGREANU, Gideon AMIR, Mark SANDLER, Yaron GRINWALD
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Publication number: 20150129811Abstract: The application relates to a method of producing an electrostatic ink composition, the method comprising: mixing a resin and a conductive pigment in a continuous mixer to form a compounded mixture comprising particles comprising the resin and the pigment; adding a liquid carrier to the compounded mixture, such that the particles comprising the resin and the conductive pigment are dispersed in the liquid carrier; and, before, during or after adding the liquid carrier to the compounded mixture: imparting a charge on the particles comprising the resin and the pigment.Type: ApplicationFiled: May 31, 2012Publication date: May 14, 2015Inventors: Inbar Adi, Ruslan Tovberg, Eyal Negreanu, Olga Kagan, Yaron Grinwald, Reut Avigdor
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Publication number: 20150064424Abstract: There is provided a method of producing an electrostatic ink composition, the method comprising: mixing a resin, a liquid carrier, and a conductive metallic pigment having a coating of surfactant thereon, to form an electrostatic ink composition comprising the resin and the conductive metallic pigment dispersed in the liquid carrier. An electrostatic ink composition and a substrate are also described.Type: ApplicationFiled: May 31, 2012Publication date: March 5, 2015Inventors: Eyal Negreanu, Rada Nuchimov, Vladislav Kaploun, Gregory Katz, Inbar Adi, Yaron Grinwald, Reut Avigdor