Patents by Inventor Gil Bar-Haim
Gil Bar-Haim 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: 10042277Abstract: Herein is disclosed a magenta liquid electrostatic ink composition comprising chargeable particles comprising a resin, a pigment, a liquid carrier in which the chargeable particles are dispersed, and a charge director, wherein the resin is formable from polymerizing alkylene monomers and methacrylic or acrylic acid monomers, the pigment is selected from pigment violet 19 type ?I pigment violet 19 type ?II pigment violet 19 type ?, pigment violet 19 type ?, pigment red 177, pigment red 208, pigment red 122 and pigment violet 32, and the liquid electrostatic ink composition lacks any other types of pigment. Also disclosed herein is a method of electrostatic printing and a print substrate having printed thereon the magenta liquid electrostatic ink composition.Type: GrantFiled: June 9, 2014Date of Patent: August 7, 2018Assignee: HP Indigo B.V.Inventors: Gil Bar-Haim, Alexey S. Kabalnov, Albert Teishev, Alina Grishman, Vladislav Kaploun, Danny Feldman, Eyal Bachar
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Patent number: 10042278Abstract: Herein is disclosed a magenta liquid electrostatic ink composition comprising a carrier liquid; and ink particles comprising a resin, a magenta pigment and a black pigment, wherein the black pigment is present in the composition in an amount of 0.01 to 0.5 wt % by total solids of the composition.Type: GrantFiled: April 28, 2015Date of Patent: August 7, 2018Assignee: HP Indigo B.V.Inventors: Adi Vinegrad, Yaron Grinwald, Gil Bar-Haim, Mirta Perlman, Alina Grishman, Danny Feldman, Eyal Shelef
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Patent number: 10042276Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin, a charge director comprising a sulfosuccinate salt, and a non-polymeric, non-fatty acid having a pKa, when measured in water at 20° C., of at least 1. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.Type: GrantFiled: April 30, 2014Date of Patent: August 7, 2018Assignee: HP Indigo B.V.Inventors: Gil Bar-Haim, Alina Grishman, Ilanit Mor, Albert Teishev
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Publication number: 20180155565Abstract: Herein is disclosed an electrostatic ink composition. In some examples, the electrostatic ink compositions comprise: a carrier liquid; a first resin; and a fluorescent pigment.Type: ApplicationFiled: July 17, 2015Publication date: June 7, 2018Applicant: HP Indigo B.V.Inventors: Biana Noikas, Dror Kella, Adi Vinegrad, Regina Guslitzer, Yaron Grinwald, Gil Bar-Haim, Tehila Ben-Ezra, Avishai Moshel, Emad Masoud, Yelena Litichevski, Roi Liraz, Noam Parvin
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Publication number: 20180120718Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin comprising a polymer having acidic side groups, and a cyclic anhydride. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.Type: ApplicationFiled: December 6, 2017Publication date: May 3, 2018Applicant: HP Indigo B.V.Inventors: Gil Bar-Haim, Alina Grishman
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Patent number: 9921512Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin comprising a polymer having acidic side groups, and a cyclic anhydride. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.Type: GrantFiled: January 30, 2014Date of Patent: March 20, 2018Assignee: HP Indigo B.V.Inventors: Gil Bar-Haim, Alina Grishman
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Publication number: 20180074424Abstract: Herein is disclosed magenta liquid electrostatic ink compositions. In some examples, the electrostatic ink compositions comprise a magenta pigment, a basic dispersant, a resin comprising a polymer having acidic side groups, a carrier liquid and a charge director, wherein the dispersant comprises a compound comprising a succinimide group linked to a primary, secondary or tertiary amine.Type: ApplicationFiled: July 17, 2015Publication date: March 15, 2018Inventors: Gil Bar-Haim, Tal Rosenthal, Albert Teishev, Marc Klein
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Patent number: 9899124Abstract: The present disclosure is drawn to an electrostatic ink composition comprising a resin and an elongate conductive species. Also disclosed herein is a substrate on which is electrostatically printed a conductive trace, wherein the trace comprises a resin and an elongate conductive species. Further disclosed herein is a method of electrophotographic printing an electrostatic ink composition comprising a resin and an elongate conductive species.Type: GrantFiled: July 23, 2012Date of Patent: February 20, 2018Assignee: Hewlett-Packard Indigo B.V.Inventors: Yaron Grinwald, Gideon Amir, Rita Reznikov, Reut Avigdor, Haim Gefen, Gil Bar-Haim, Mark Sandler, Dror Kella
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Publication number: 20180031994Abstract: Herein is disclosed a cyan electrostatic ink composition, the cyan electrostatic ink composition comprising: a cyan pigment, a basic dispersant, a phthalocyanine having acid groups, a resin and a charge director.Type: ApplicationFiled: January 30, 2015Publication date: February 1, 2018Inventors: Tal ROSENTHAL, Marc KLEIN, Albert TEISHEV, Gil BAR-HAIM
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Publication number: 20180031995Abstract: Herein is disclosed a magenta liquid electrostatic ink composition comprising a carrier liquid; and ink particles comprising a resin, a magenta pigment and a black pigment, wherein the black pigment is present in the composition in an amount of 0.01 to 0.5 wt % by total solids of the composition.Type: ApplicationFiled: April 28, 2015Publication date: February 1, 2018Applicant: HP Indigo B.V.Inventors: Adi Vinegrad, Yaron Grinwald, Gil Bar-Haim, Mirta Perlman, Alina Grishman, Danny Feldman, Eyal Shelef
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Publication number: 20170205724Abstract: There is provided an electrostatic ink composition comprising chargeable particles comprising a resin and a conductive pigment; a charge director comprising a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula [R1—O—C(O)CH2CH(SO3)C(O)—O—R2] wherein each of R1 and R2 is an a Ikyl group; and a dispersant being or comprising a succinimide linked to a basic group. A method of manufacturing an electrostatic ink composition and a print medium are also described.Type: ApplicationFiled: July 18, 2014Publication date: July 20, 2017Inventors: Yaron Grinwald, Rada Nuchimov, Gil Bar-Haim
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Publication number: 20170157974Abstract: The present disclosure relates to a system for electrostatic printing. The system comprises a UV colorant comprising a rare earth diketonate, a thermoplastic resin and an additive selected from at least one of an acid having a pKa of 1 to 5 and a hydroxide. The system may be used to print a security feature on a print substrate.Type: ApplicationFiled: April 7, 2014Publication date: June 8, 2017Inventors: Alexey S. Kabalnov, Sarah Olakemi Akinlabi, Gil Bar-Haim, Albert Teishev
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Publication number: 20170146919Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin, a charge director comprising a sulfosuccinate salt, and a non-polymeric, non-fatty acid having a pKa, when measured in water at 20° C., of at least 1. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.Type: ApplicationFiled: April 30, 2014Publication date: May 25, 2017Inventors: Gil Bar-Haim, Alina Grishman, Ilanit Mor, Albert Teishev
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Publication number: 20170146920Abstract: Herein is disclosed a magenta liquid electrostatic ink composition comprising chargeable particles comprising a resin, a pigment, a liquid carrier in which the chargeable particles are dispersed, and a charge director, wherein the resin is formable from polymerising alkylene monomers and methacrylic or acrylic acid monomers, the pigment is selected from pigment violet 19 type ?I pigment violet 19 type ?II pigment violet 19 type ?, pigment violet 19 type ?, pigment red 177, pigment red 208, pigment red 122 and pigment violet 32, and the liquid electrostatic ink composition lacks any other types of pigment. Also disclosed herein is a method of electrostatic printing and a print substrate having printed thereon the magenta liquid electrostatic ink composition.Type: ApplicationFiled: June 9, 2014Publication date: May 25, 2017Inventors: Gil Bar-Haim, Alexey S. Kabalnov, Albert Teishev, Alina Grishman, Vladislav Kaploun, Danny Feldman, Eyal Bachar
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Publication number: 20170139339Abstract: Herein is disclosed method of producing an electrostatic ink composition, the method comprising: mixing a pigment and a dispersant to form a pigment dispersion; wherein the pigment is acidic and the dispersant is basic or the pigment is basic and the dispersant is acidic; and then grinding the pigment dispersion with a resin, and wherein a charge director is combined with the pigment and dispersant before, during or after the grinding of the pigment dispersion with the resin to form the electrostatic ink composition.Type: ApplicationFiled: April 30, 2014Publication date: May 18, 2017Applicant: Hewlett-Packard Indigo, B.V.Inventors: Tal ROSENTHAL, Albert TEISHEV, Gil BAR-HAIM, Marc KLEIN
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Publication number: 20160342099Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin comprising a polymer having acidic side groups, and a cyclic anhydride. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.Type: ApplicationFiled: January 30, 2014Publication date: November 24, 2016Applicant: Hewlett-Packard Indigo B.V.Inventors: Gil Bar-Haim, Alina Grishman
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Patent number: 9428655Abstract: Described herein is a method for electrostatic printing including: (i) providing an ink composition having: a hydrocarbon carrier liquid and particles includes a resin and a colorant, and wherein the ink composition contains less than 0.3 mg of charge director per g of solids in the ink composition; (ii) adding a charge director to the ink composition, such that the total amount of charge director in the ink composition is at least 0.6 mg per g of solids in the ink composition, and, (iii) within a predetermined time of adding the charge director, printing the ink onto a print medium in an electrostatic printing process, wherein the predetermined time is 90 minutes or less.Type: GrantFiled: January 16, 2012Date of Patent: August 30, 2016Assignee: Hewlett-Packard Indigo B.V.Inventors: Gil Bar-Haim, Amir Ofir, Ilanit Mor, Alina Grishman, Albert Teishev
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Patent number: 9188896Abstract: The present invention provides an electrostatic ink composition comprising a carrier liquid, a resin, a pigment and a conductive polymer. Method for producing the electrostatic ink composition and methods for printing the composition are also disclosed.Type: GrantFiled: September 30, 2011Date of Patent: November 17, 2015Assignee: Hewlett-Packard Indigo B.V.Inventors: Gil Bar-Haim, Anatoly Sobolevsky, Yaron Grinwald
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Publication number: 20150220010Abstract: The present disclosure is drawn to an electrostatic ink composition comprising a resin and an elongate conductive species. Also disclosed herein is a substrate on which is electrostatically printed a conductive trace, wherein the trace comprises a resin and an elongate conductive species. Further disclosed herein is a method of electrophotographic printing an electrostatic ink composition comprising a resin and an elongate conductive species.Type: ApplicationFiled: July 23, 2012Publication date: August 6, 2015Applicant: Hewlett-Packard Indigo B.V.Inventors: Yaron Grinwald, Gideon Amir, Rita Reznikov, Reut Avigdor, Haim Gefen, Gil Bar-Haim, Mark Sandler, Dror Kella
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Patent number: 8936896Abstract: The present disclosure provides for liquid electrophotographic inks having charge stabilizers and associated methods. In one example, a liquid electrophotographic ink can comprise a carrier liquid, a resin, a pigment, a negative charge director, and a charge stabilizer having a reduction potential of 0.16 v to 3.0 v.Type: GrantFiled: December 16, 2010Date of Patent: January 20, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Gil Bar-Haim, Gregory Katz, Anatoly Sobolevsky, Ilanit Mor