Patents Assigned to HP INDIGO B.V.
  • Gap control
    Patent number: 10156805
    Abstract: In one example, a device includes a flexible roller and an actuator to flex the roller while it is rotating to change the gap between the roller and a surface opposite the roller.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: December 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Avichay Mor-Yosef, Ami Halfon
  • Electrostatic printing
    Patent number: 10156816
    Abstract: A method of electrostatic printing may include forming a latent electrostatic image on a surface and transferring a first volume of a charged toner to the latent electrostatic image on the surface. The method may also include transferring a second volume of a charged toner to the surface, such that a toner image including the first volume of charged toner and the second volume of charged toner is formed on the surface, the second volume of charged toner being disposed on the first volume of charged toner. The method may also include transferring the image to a print substrate.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: December 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Uri Lidai, Shmuel Borenstain
  • Liquid electrophotographic printing
    Patent number: 10156817
    Abstract: An example apparatus is provided in accordance with the present disclosure, which may be used for example for liquid electrophotographic printing. The example apparatus includes a photo imaging plate to receive a liquid colorant image, the liquid colorant including a carrier fluid, and to transfer the image to a support, and a rotatable roller to remove carrier fluid from the photo imaging plate and increase the density of solids in the liquid colorant on at least a region of the photo imaging plate, prior to the liquid image being transferred.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: December 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Asaf Anufa, Ilan Romem
  • Color separations on photo drums
    Patent number: 10156804
    Abstract: A photo drum may be to receive a color separation. A controller may be to change a location of the color separation on the photo drum from a first location to a second location when a separation location history for the color separation is outside of a threshold range.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: December 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Vitaly Portnoy, Maya Bar-Sadeh, Michel Assenheimer
  • Image transfer for liquid electro-photographic printing
    Patent number: 10156815
    Abstract: In one example, a system for transferring an ink image from a photoconductor to a print substrate includes a transfer member having a light absorbing exterior surface to receive a liquid LEP ink image from the photoconductor and to release a molten toner layer to a print substrate and a light source to expose a width of the surface carrying the liquid ink image to a light beam delivering enough power to transform the liquid ink image into a molten toner layer.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Mark Sandler, Peter Nedelin, Shai Lior
  • CLEANING OF A SURFACE IN A PRINTING DEVICE
    Publication number: 20180354289
    Abstract: The present disclosure relates to cleaning a surface in a printing device, wherein a steam guiding member directs a steam flow towards the surface; wherein the steam flow interacts with a substance on said surface to clean a portion of the surface.
    Type: Application
    Filed: July 29, 2015
    Publication date: December 13, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Alex Feygelman, Mordechai Arenson, Oran Levintant, Roy Maman, Kai-Kong Iu, Shunit Petachia Halely, Shai Rahamim
  • Formation of a crease and an image on media
    Patent number: 10150285
    Abstract: A method of forming an image and a crease on media by an image forming system includes forming a crease formation pattern on an impression media received by an impression member. The method also includes forming the image on an image forming blanket of an intermediate transfer member by a print unit. The method also includes pressing the media against the impression member by the image forming blanket to transfer the image onto the media and to establish contact with the crease formation pattern to form the corresponding crease on the media.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 11, 2018
    Assignee: HP Indigo B.V.
    Inventors: Itzik Shaul, Gilad Greenberg, George Trendafilov
  • Liquid electrophotographic varnish composition
    Patent number: 10139746
    Abstract: Herein is disclosed a liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a metal catalyst and/or a photo-initiator for catalyzing the cross-linking; and a carrier liquid.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: November 27, 2018
    Assignee: HP Indigo B.V.
    Inventors: Tony Azzam, Ilanit Mor, Albert Teishev, Guy Nesher, Getahun Biadglin, Haim Cohen, Samer Farran, Nurit Carmel-Barnea, Julia Kornilov
  • Electrophotographic varnish composition
    Patent number: 10139742
    Abstract: An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: November 27, 2018
    Assignee: HP Indigo B.V.
    Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Guy Nesher, Getahun Biadglin, Haim Cohen, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
  • TRANSMISSION FOR AN LEP DEVELOPER UNIT
    Publication number: 20180329336
    Abstract: A transmission for a developer unit that includes a developer roller to apply LEP ink to a photoconductor, a cleaner roller to clean the developer roller, and a squeegee roller to squeegee ink on the developer roller. In one example, the transmission includes a mechanical drive train to, with the cleaner roller, simultaneously drive the developer roller at a first surface speed and the squeegee roller at a second surface speed slower than the first surface speed.
    Type: Application
    Filed: January 8, 2016
    Publication date: November 15, 2018
    Applicant: HP Indigo B.V.
    Inventors: Blair A Butler, Andre Garcia, James Kiang, David Sabo
  • PRINTING LIQUIDS CONCENTRATION
    Publication number: 20180321621
    Abstract: An example apparatus includes a conveyor. The apparatus also includes a developer unit. The developer unit is to concentrate printing liquid. The developer unit also is to deliver the printing liquid to the conveyor as a thick layer on the conveyor.
    Type: Application
    Filed: February 8, 2016
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Peter Nedelin, Shai Lior, Mark Sandler
  • PRINTING LIQUIDS CONCENTRATION
    Publication number: 20180321620
    Abstract: An example method includes concentrating first printing liquid on a conveyor. Concentrating the first printing liquid produces liquid carrier having a low non-volatile solid concentration. The method also includes concentrating the liquid carrier having the low non-volatile solid concentration on a developer roller. Concentrating the liquid carrier having the low non-volatile solid concentration produces liquid carrier substantially free of non-volatile solids. The method also includes delivering the liquid carrier substantially free of non-volatile solids to a storage vessel.
    Type: Application
    Filed: February 8, 2016
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Peter Nedelin, Shai Lior, Mark Sandler
  • COLOR MAPPING WITH PHOSPHORESCENT MATERIALS
    Publication number: 20180324328
    Abstract: In an example, processing apparatus includes an interface to receive input data comprising color data, a color mapping module to map at least one color of the input data to a print apparatus color space according to at least one mapping, and a preview module to generate a representation of a printed output of the print apparatus according to the mapping. The print apparatus color space may be defined based on print materials to be used by a print apparatus, wherein at least one print material comprises phosphorescent material. The preview module may generate a first image representing an externally illuminated printed output of the print apparatus, and a second image representing a phosphorescing printed output of the print apparatus in a low light environment.
    Type: Application
    Filed: March 18, 2016
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Biana Noikas, Dror Kella, Yaron Grinwald, Emad Masoud, Adi Vinegrad, Regina Guslitzer
  • CLEANING A SILICON PHOTOCONDUCTOR
    Publication number: 20180321630
    Abstract: In an example implementation, a method of cleaning a silicon photoconductor includes contacting the silicon photoconductor with a base-peroxide solution, rinsing the silicon photoconductor with a liquid, and heating the silicon photoconductor to evaporate the liquid.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Applicant: HP Indigo, B.V.
    Inventors: Reut DIAMANT, Sasi MOALEM, Boaz TAGANSKY
  • IN-LINE PRINTING
    Publication number: 20180319163
    Abstract: In one example of the disclosure, a first print engine is to print a first image in a first area of a web substrate, and is to leave blank a second area of the web substrate. The printed first image includes a set of fiducials 1-n. For each of fiducials 1-n, a fiducial position error is determined based upon a comparison of the detected position and a predicted position for a subject fiducial. A substrate advancement error is calculated based upon an average of the determined fiducial position errors. An insertion point is determined based upon the substrate advancement error. The insertion point is a point at which a second print engine in-line with the first print engine is to begin printing a second image in the second area.
    Type: Application
    Filed: June 28, 2018
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Yoav Landau, On Mashiach
  • GENERATING HALFTONES
    Publication number: 20180324322
    Abstract: A halftone comprises a first halftone screen and a second halftone screen. The first halftone screen comprises a first plurality of amplitude modulated dots arranged according to a first plurality of rows, the first plurality of rows being orientated according to a first direction and comprising a first dot spacing. The second halftone screen comprises a second plurality of amplitude modulated dots arranged according to a second plurality of rows, the second plurality of row being orientated in a second direction and comprising a second dot spacing. The first direction and the second direction define an angle of 45 degrees or less and a ratio of the second dot spacing to the first dot spacing is less than one.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Tal Frank, Dror Kella, Boaz Tagansky, Oren Haik, Yotam Ben-Shoshan, Marina Limonov, Ram Dagan
  • ELECTROPHOTOGRAPHIC PRINTING
    Publication number: 20180321629
    Abstract: A cleaning solution is used to at least substantially remove colorant from the photoconductive drum as the photoconductive drum rotates. A wiper wipes the cleaning solution from the photoconductive drum while purposefully maintaining a layer of the cleaning solution on the drum. The wiper has an edge that is purposefully rounded.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 8, 2018
    Applicant: HP INDIGO B.V.
    Inventors: Boaz Tagansky, Shahar Tal, Sasi Moalem, Reut Diamant
  • Cross-talk effect in a laser diode array
    Patent number: 10118405
    Abstract: An electric cross-talk, ECT, effect of laser-diode array is measured by capturing a first image of a first laser spot of a first laser diode with a second laser diode being turned off (10) and a second image of a second laser spot of the first laser diode while switching on the second laser diode (20). A spot-energy ratio is determined (30) by processing the images, and an ECT-coupling coefficient on the first laser diode is calculated (40) by switching the second laser diode. Compensating for the ECT effect includes determining a signal for predicting the ECT effect on the first laser diode by switching the second laser diode, and generating a driving signal based on a desired current profile and the ECT-prediction signal.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: November 6, 2018
    Assignee: HP Indigo B.V.
    Inventors: Oron Ambar, Yuval Yunger, Haim Vladomirski
  • Manufacture of a charge director
    Patent number: 10120298
    Abstract: Herein is described a method for the manufacture of a charge director comprising a barium salt. The method comprises reacting barium alkoxide with an acid in a reaction medium comprising ethanol, and separating ethanol from the reaction mixture to recover the barium salt produced.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: November 6, 2018
    Assignee: HP Indigo B.V.
    Inventors: Hanit Marom Tchaicheeyan, Eyal Bachar, Julia Kornilov, Albert Teishev
  • Sealing
    Patent number: 10118380
    Abstract: Certain examples of seals that can move along a slit are disclosed. The seals can comprise a first leaf, a second leaf, and a biasing member to push the first leaf away from the second leaf. Also, apparatus for applying a fluid, and printing systems are described.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 6, 2018
    Assignee: HP Indigo B.V.
    Inventor: Alex Feygelman