Patents by Inventor Michael Kokotov

Michael Kokotov 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).

  • Patent number: 11860557
    Abstract: In an example, a print apparatus comprises an intermediate transfer member to receive thermoplastic print agent from a photoconductive surface, a rotatably mounted endless cleaning surface to receive a layer of thermoplastic print agent from the intermediate transfer member and a heater, to heat the endless cleaning surface. The endless cleaning surface may be to engage with the intermediate transfer member when heated to transfer residue from the intermediate transfer member to the layer of thermoplastic print agent on the endless cleaning surface.
    Type: Grant
    Filed: January 21, 2022
    Date of Patent: January 2, 2024
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Elina Ploshnik, Guy Nesher, Alex Feygelman, Eran Shiran, Nadav Shalem, Chen Talmor
  • Publication number: 20230118543
    Abstract: An intermediate transfer member for digital offset printing, comprising a cured silicone release layer formed by curing a curable silicone release formulation comprising a polyalkylsiloxane containing at least two vinyl groups; an at least partially fluorinated polyalkylsiloxane containing at least two vinyl groups; a polyalkylsiloxane cross-linker containing at least two Si-H bonds; and a catalyst or photoinitiator; wherein fluorine atoms provide at least 2.5 wt.% of the total weight of polyalkylsiloxane compounds. There is also described a method of producing an intermediate transfer member, and a curable silicone release formulation for an intermediate transfer member.
    Type: Application
    Filed: April 1, 2020
    Publication date: April 20, 2023
    Inventors: Tony Azzam, Michael Kokotov, Edith Beilis, Sergey Inotaev
  • Patent number: 11573507
    Abstract: In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: February 7, 2023
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Alex Feygelman, Guy Nesher, Nadav Shalem, Michael Vinokur
  • Publication number: 20220291605
    Abstract: An electrostatic printing method for forming a structured image on a print substrate, the method comprising: providing an electrostatic ink composition; contacting the electrostatic ink composition with a latent electrostatic image on a photoconductive surface to create a developed toner image; transferring the developed toner image to an embossed intermediate transfer member to create a structured toner image; and; transferring the structured toner image to a print substrate. The embossed intermediate transfer may comprise a substrate layer, at least part of which is compressible and comprises an electrically conductive species; and; an outer release layer disposed on the substrate layer, the outer release layer comprising a structured surface. Methods of making the embossed intermediate transfer member are also described herein.
    Type: Application
    Filed: January 9, 2020
    Publication date: September 15, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Gideon AMIR, Tony AZZAM, Michael KOKOTOV
  • Publication number: 20220206407
    Abstract: Described herein is a liquid electrostatic ink composition comprising a liquid carrier; and chargeable toner particles comprising a resin and an aluminium-based color-shifting pigment. Also described herein is a method of printing comprising: printing onto a substrate a liquid electrostatic ink composition comprising: a liquid carrier; and chargeable toner particles comprising a resin and an aluminium-based color-shifting pigment, and a printed article comprising a print substrate having printed thereon the electrostatic ink composition.
    Type: Application
    Filed: July 31, 2019
    Publication date: June 30, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Olga Kagan, Vladislav KAPLOUN, Rada NUCHIMOV, Michael KOKOTOV, Yaron GRINWALD, Albert TEISHEV, Ofir BROS, Samer FARRAN
  • Publication number: 20220146964
    Abstract: In an example, a print apparatus comprises an intermediate transfer member to receive thermoplastic print agent from a photoconductive surface, a rotatably mounted endless cleaning surface to receive a layer of thermoplastic print agent from the intermediate transfer member and a heater, to heat the endless cleaning surface. The endless cleaning surface may be to engage with the intermediate transfer member when heated to transfer residue from the intermediate transfer member to the layer of thermoplastic print agent on the endless cleaning surface.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 12, 2022
    Inventors: Amir Kedem, Michael Kokotov, Elina Ploshnik, Guy Nesher, Alex Feygelman, Eran Shiran, Nadav Shalem, Chen Talmor
  • Patent number: 11320766
    Abstract: In an example, a print apparatus comprises an intermediate transfer member to receive thermoplastic print agent from a photoconductive surface, a rotatably mounted endless cleaning surface to receive a layer of thermoplastic print agent from the intermediate transfer member and a heater, to heat the endless cleaning surface. The endless cleaning surface may be to engage with the intermediate transfer member when heated to transfer residue from the intermediate transfer member to the layer of thermoplastic print agent on the endless cleaning surface.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: May 3, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Elina Ploshnik, Guy Nesher, Alex Feygelman, Eran Shiran, Nadav Shalem, Chen Talmor
  • Publication number: 20220004124
    Abstract: In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.
    Type: Application
    Filed: September 16, 2021
    Publication date: January 6, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Alex Feygelman, Guy Nesher, Nadav Shalem, Michael Vinokur
  • Patent number: 11163247
    Abstract: In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 2, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Alex Feygelman, Guy Nesher, Nadav Shalem, Michael Vinokur
  • Publication number: 20210294245
    Abstract: In an example, a print apparatus comprises an intermediate transfer member to receive thermoplastic print agent from a photoconductive surface, a rotatably mounted endless cleaning surface to receive a layer of thermoplastic print agent from the intermediate transfer member and a heater, to heat the endless cleaning surface. The endless cleaning surface may be to engage with the intermediate transfer member when heated to transfer residue from the intermediate transfer member to the layer of thermoplastic print agent on the endless cleaning surface.
    Type: Application
    Filed: March 21, 2018
    Publication date: September 23, 2021
    Inventors: Amir Kedem, Michael Kokotov, Elina Ploshnik, Guy Nesher, Alex Feygelman, Eran Shiran, Nadav Shalem, Chen Talmor
  • Publication number: 20210232069
    Abstract: In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 29, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Alex Feygelman, Guy Nesher, Nadav Shalem, Michael Vinokur
  • Patent number: 11067922
    Abstract: The present disclosure relates to a method of producing an intermediate transfer blanket. The method includes spray-coating a blanket body with a release layer composition including a curable polysiloxane polymer and solid particles of an electrically conductive material. The blanket body is subjected to motion during spray-coating, such that the release layer composition is subjected to shear forces as it deposits on the blanket body.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: July 20, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gidi Halaf, Ira Yudovin-Farber, Michael Kokotov, Dina Voloshin Firouz
  • Publication number: 20200371454
    Abstract: The present disclosure relates to a method of producing an intermediate transfer blanket. The method includes spray-coating a blanket body with a release layer composition including a curable polysiloxane polymer and solid particles of an electrically conductive material. The blanket body is subjected to motion during spray-coating, such that the release layer composition is subjected to shear forces as it deposits on the blanket body.
    Type: Application
    Filed: April 20, 2018
    Publication date: November 26, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Gidi HALAF, Ira YUDOVIN-FARBER, Michael KOKOTOV, Dina VOLOSHIN FIROUZ
  • Patent number: 10761445
    Abstract: According to an example, a resin, a carrier liquid, and a pearlescent pigment may be mixed to form a liquid electrophotographic ink.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: September 1, 2020
    Assignee: HP Indigo B.V.
    Inventors: Olga Kagan, Emad Masoud, Yana Reznick, Rada Nuchimov, Danny Feldman, Haim Cohen, Shiran Zabar, Yaron Grinwald, Michael Kokotov
  • Patent number: 10591840
    Abstract: A liquid electrophotographic (LEP) ink can include a liquid ink vehicle, a conductive toner including a conductive pigment and a polymeric binder, and a charge director. The liquid electrophotographic ink can have a conductivity of from 150 to 2000 picoSiemens.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: March 17, 2020
    Assignee: HP Indigo B.V.
    Inventors: Michael Kokotov, Gregory Katz, Yaron Grinwald, Pavel Sandik
  • Publication number: 20200081364
    Abstract: Described herein is a method for priming a polymeric print substrate for subsequently receiving a liquid electrophotographic (LEP) ink in which a surface of a polymeric print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the polymeric print substrate coated with the first primer.
    Type: Application
    Filed: February 1, 2017
    Publication date: March 12, 2020
    Inventors: Hannoch Ron, Michael Kokotov, Yaron Hershman, Shani Maor
  • Patent number: 10416583
    Abstract: The present disclosure is drawn to an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species. Also disclosed herein is a substrate on which is electrostatically printed a conductive trace, wherein the trace comprises a resin having a Mw of 10,000 or less and a conductive species. Further disclosed herein is a method of electrophotographic printing an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: September 17, 2019
    Assignee: HP Indigo B.V.
    Inventors: Gregory Katz, Yaron Grinwald, Michael Kokotov, Regina Guslitzer
  • Patent number: 10222719
    Abstract: A method of electro-photographic printing includes applying a background voltage to a photo imaging plate using a charge roller that moves relative to the photo imaging plate, and varying the applied background voltage as the roller moves relative to the photo imaging plate, wherein the background voltage is varied in a region of the photo imaging plate where no ink is to be transferred.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 5, 2019
    Assignee: HP INDIGO B.V.
    Inventors: Shmuel Borenstain, Michael Kokotov
  • Publication number: 20190064690
    Abstract: A liquid electrophotographic (LEP) ink can include a liquid ink vehicle, a conductive toner including a conductive pigment and a polymeric binder, and a charge director. The liquid electrophotographic ink can have a conductivity of from 150 to 2000 picoSiemens.
    Type: Application
    Filed: April 6, 2016
    Publication date: February 28, 2019
    Applicant: HP Indigo B.V.
    Inventors: Michael Kokotov, Gregory KATZ, Yaron GRINWALD, Pavel SANDIK
  • Publication number: 20190033741
    Abstract: The present disclosure is drawn to an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species. Also disclosed herein is a substrate on which is electrostatically printed a conductive trace, wherein the trace comprises a resin having a Mw of 10,000 or less and a conductive species. Further disclosed herein is a method of electrophotographic printing an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species.
    Type: Application
    Filed: March 4, 2016
    Publication date: January 31, 2019
    Inventors: Gregory Katz, Yaron Grinwald, Michael Kokotov, Regina Guslitzer