Patents by Inventor Roman Katz

Roman Katz 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).

  • Establishing distances between developer roller surfaces and electrodes
    Patent number: 11340536
    Abstract: In one example of the disclosure, a developer system includes a housing and a developer roller. A first electrode and a second electrode are disposed in the housing, the first and second electrodes to create an electrical charge to cause transfer of printing fluid to a developer roller surface. The developer roller is rotatably connected to the housing. The developer includes a surface, a bearing to support and enable rotation of an axle attached to the developer roller, and a plurality of stop pins. The plurality of stop pins are connected to the housing. The stop pins are to support the bearings and to establish target distances between the developer roller surface and the first electrode and second electrodes.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: May 24, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shachar Berger, Sagie Shanun, Roman Katz, Shai Rahamim, Hay Arbeli, Eyal Elbaz, Alon Froom, Lavi Cohen
  • Print agent application assembly cleaning tools
    Patent number: 11307526
    Abstract: A print agent application assembly cleaning tool is disclosed. The print agent application assembly cleaning tool may include a handle and a flexible blade. The flexible blade may be inserted into a gap between a pair of electrodes of a print agent application assembly. The blade may protrude from a distal end of the handle in a lengthwise direction. The blade may have a width that varies to define a curved profile. The width may reduce and subsequently increase along a length of the blade so as to define a recess in an edge of the blade.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: April 19, 2022
    Assignee: HP Indigo B.V.
    Inventors: David Sabo, Barak Rosenstein, Ilan Ben-Basat, Roman Katz
  • PRINT AGENT APPLICATION ASSEMBLY CLEANING TOOLS
    Publication number: 20210325815
    Abstract: A print agent application assembly cleaning tool is disclosed. The print agent application assembly cleaning tool may include a handle and a flexible blade. The flexible blade may be inserted into a gap between a pair of electrodes of a print agent application assembly. The blade may protrude from a distal end of the handle in a lengthwise direction. The blade may have a width that varies to define a curved profile. The width may reduce and subsequently increase along a length of the blade so as to define a recess in an edge of the blade.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 21, 2021
    Inventors: David Sabo, Barak Rosenstein, Ilan Ben-Basat, Roman Katz
  • ESTABLISHING DISTANCES BETWEEN DEVELOPER ROLLER SURFACES AND ELECTRODES
    Publication number: 20210325797
    Abstract: In one example of the disclosure, a developer system includes a housing and a developer roller. A first electrode and a second electrode are disposed in the housing, the first and second electrodes to create an electrical charge to cause transfer of printing fluid to a developer roller surface. The developer roller is rotatably connected to the housing. The developer includes a surface, a bearing to support and enable rotation of an axle attached to the developer roller, and a plurality of stop pins. The plurality of stop pins are connected to the housing. The stop pins are to support the bearings and to establish target distances between the developer roller surface and the first electrode and second electrodes.
    Type: Application
    Filed: February 14, 2018
    Publication date: October 21, 2021
    Inventors: Shachar Berger, Sagie Shanun, Roman Katz, Shai Rahamim, Hay Arbeli, Eyal Elbaz, Alon Froom, Lavi Cohen
  • Anti-friction ring for a developer roller in a liquid electrophotographic printer
    Patent number: 10698342
    Abstract: In one example, a sealing system for a developer roller in a liquid electrophotographic printer includes a pair of arcuate seals each with an annular sealing surface to seal one end of the developer roller; a pair of washers each having a low friction surface to contact one of the sealing surfaces; and a pair of retainers each to hold one of the washers flat against the end of the roller.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 30, 2020
    Assignee: HP Indigo B.V.
    Inventors: David Sabo, Yehonatan Lugassy, Roman Katz
  • ANTI-FRICTION RING FOR A DEVELOPER ROLLER IN A LIQUID ELECTROPHOTOGRAPHIC PRINTER
    Publication number: 20190346791
    Abstract: In one example, a sealing system for a developer roller in a liquid electrophotographic printer includes a pair of arcuate seals each with an annular sealing surface to seal one end of the developer roller; a pair of washers each having a low friction surface to contact one of the sealing surfaces; and a pair of retainers each to hold one of the washers flat against the end of the roller.
    Type: Application
    Filed: January 31, 2017
    Publication date: November 14, 2019
    Inventors: David Sabo, Yehonatan Lugassy, Roman Katz