Patents Assigned to Hewlett-Packard Indigo B.V.
  • Ink transfer element
    Patent number: 9248641
    Abstract: An ink transfer element for a printing apparatus, the ink transfer element comprising a surface for transferring ink applied thereto to at least one further ink transfer element, wherein the surface is configured to, when an ink comprising pigment particles and a liquid vehicle is applied to the surface, at least partly separate the liquid vehicle from the pigment particles, through the surface. The ink transfer element further relates to printing apparatus and a method of printing.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: February 2, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Ziv Gilan, Michal Kalish, Zeharia Levi, David Levi
  • Roller with non-uniform diameter
    Patent number: 9244388
    Abstract: In an example, rollers are disclosed, wherein one of the rollers has a resilient outer layer, and one of the rollers comprises a coned portion.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: January 26, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Shachar Berger, Zvika Cohen, Oran Levintant
  • AUTOMATIC LOAD BALANCER FOR PRESSES
    Publication number: 20160019012
    Abstract: A press load balancer automatically balances the printing load over a number of presses by taking into account the load on each press and the substrates (i.e., paper types) and inks installed on the presses to improve throughput while minimizing load on the press operators.
    Type: Application
    Filed: September 25, 2015
    Publication date: January 21, 2016
    Applicant: Hewlett-Packard Indigo, B.V.
    Inventors: Steve MORRIS, Philippe MUCHER, Nir GILON
  • Electrostatic ink composition, ink container, printing apparatus and printing method
    Patent number: 9239533
    Abstract: Disclosed is an electrostatic ink composition, comprising a single charge director and a charge control agent that counters the build up of negative optical density memory on the intermediate transfer member of a printing apparatus using the electrostatic ink.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: January 19, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Ilanit Mor, Basile Verdene, Albert Teishev, Roi Liraz, Yaron Grinwald, Nava Klein, Emad Masoud
  • Electrostatic printing
    Patent number: 9223253
    Abstract: Disclosed herein is a method for electrostatic printing, wherein the method comprises (a) providing an ink composition comprising particles comprising a resin, wherein the ink composition contains less than 0.3 mg of charge director per g of solids in the ink composition; (b) passing the ink composition between a first electrode and a developer roller, wherein sufficient potential is applied between the developer roller and the electrode such that the resin particles are charged and adhere to the developer roller; (c) transferring at least some of the particles from the developer roller to a photoimaging plate to form an image on the photoimaging plate; and (d) transferring the image from the photoimaging plate to a print medium. Also disclosed here is an apparatus for carrying out the method, and a print medium printed using the method.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: December 29, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Shai Lior, Mark Sandler, Peter Nedelin
  • METHOD AND APPARATUS FOR FORMING ON A SUBSTRATE A PATTERN OF A MATERIAL
    Publication number: 20150351250
    Abstract: 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: Application
    Filed: October 31, 2012
    Publication date: December 3, 2015
    Applicant: HEWLETT-PACKARD INDIGO B.V.
    Inventors: Dror KELLA, Eyal NEGREANU, Gideon AMIR, Mark SANDLER, Yaron GRINWALD
  • Formation of a Crease and an Image on Media
    Publication number: 20150343762
    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: Application
    Filed: November 13, 2012
    Publication date: December 3, 2015
    Applicant: HEWLETT-PACKARD INDIGO B.V
    Inventors: Itzik Shaul, Gilad Greenberg, George Trendafilov
  • Electrostatic ink composition
    Patent number: 9188896
    Abstract: 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: Grant
    Filed: September 30, 2011
    Date of Patent: November 17, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Gil Bar-Haim, Anatoly Sobolevsky, Yaron Grinwald
  • Method and system for adjusting a gap between rollers of a printer in accordance with a media or image length
    Patent number: 9182706
    Abstract: The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to in a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: November 10, 2015
    Assignee: Hewlett-Packard Indigo B. V.
    Inventors: Uri Lidai, Sagi Daren, Assaf Berman, Martin Chauvin, Michel Assenheimer
  • Convertible buffers for web presses
    Patent number: 9180655
    Abstract: In one example, a web press includes a web press station and a convertible buffer near the web press station, the convertible buffer being configured to convert to a platform for accessing the web press station. A method for performing web press maintenance is also disclosed.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 10, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Eyal Peleg, Itzik Kent, Benji Ruhm, Erez Elias
  • Hybrid photodetector
    Patent number: 9175985
    Abstract: A hybrid photodetector employing both transmissive and reflective detection techniques for detecting objects having differing light transmission and reflection properties are in conveyance.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 3, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Eli Velner, Moshe Porat-Forshlager, Bar-Navi Michael
  • Imaging system and method
    Patent number: 9176432
    Abstract: An intermediate transfer member (34) (ITM) transfers ink solids from an image bearing surface to a substrate. The ITM has an outermost surface having an absorptivity of less than or equal to about 5 percent when measured after 36 hours of immersion in Isopar L at 100 degrees Celsius. An imaging liquid developer system (22) deposits the ink solids and an ink solids carrier onto the outermost surface of the ITM, wherein the imaging liquid developer system (22) is configured to supply the ink solids carrier at a reduced thickness or reduced density as compared to more absorptive ITMs.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: November 3, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Mark Sandler, Shai Lior
  • Automatic load balancer for presses
    Patent number: 9170758
    Abstract: A press load balancer automatically balances the printing load over a number of presses by taking into account the load on each press and the substrates (i.e., paper types) and inks installed on the presses to improve throughput while minimizing load on the press operators.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: October 27, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Steve Morris, Philippe Mucher, Nir Gilon
  • MEDIA TREATMENT APPARATUS
    Publication number: 20150283829
    Abstract: Media treatment apparatus to apply liquid treatment to media, the media treatment apparatus including a roller to receive liquid treatment and to transfer the liquid treatment, and a drop ejector to apply liquid treatment to the roller to transfer liquid treatment to an object.
    Type: Application
    Filed: October 24, 2012
    Publication date: October 8, 2015
    Applicant: HEWLETT-PACKARD INDIGO B.V.
    Inventor: Alon Gazit
  • METHOD AND APPARATUS FOR TONER APPLICATION
    Publication number: 20150268589
    Abstract: Apparatus is described which, in use, applies a thin film of a wetting agent, such as water or a water-based solution, onto paper or other print medium before applying a liquid toner. The wetting agent is applied at a predetermined distance from an image transfer area. The wetting agent acts to promote adhesion of the liquid toner to the print medium. The adhesion of the liquid toner to the print medium is further improved by supplying the wetting agent at a temperature higher than room temperature.
    Type: Application
    Filed: July 12, 2012
    Publication date: September 24, 2015
    Applicant: HEWLETT-PACKARD INDIGO B.V.
    Inventors: Peter Nedelin, Mark Sandler, Shai Lior
  • MEDIA CUTTING APPARATUS
    Publication number: 20150251458
    Abstract: Media cutting apparatus including a cutter arrangement to cut media along a line perpendicular to the direction of movement of the media, and a first roller to rotate media cut by the cutter arrangement to change the orientation of a longitudinal axis of the media. The cutter arrangement is arranged to cut the media prior to and after rotation by the first roller.
    Type: Application
    Filed: October 29, 2012
    Publication date: September 10, 2015
    Applicant: HEWLETT-PACKARD INDIGO B.V.
    Inventors: Shamai Opfer, Itzik Kent, Ilan Meiri
  • System and method for position calibration of a spot of an optical sensor
    Patent number: 9124754
    Abstract: A method for position calibration of a spot of a known geometry of an optical sensor is disclosed. The method may include providing a position calibration patch on a sheet at a position which is known with respect to a reference position on the sheet, along a scan path of the spot of the optical sensor across the sheet. The patch may include at least two adjacent blocks of different colors. The method may also include obtaining a sampling of the position calibration patch using the optical sensor. The method may further include determining from the sampling a relative coverage of the spot over the color blocks of the position calibration patch, and based on the known geometry of the spot and on the determined relative coverage, determining the position of the spot of the sensor with respect to the reference position.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: September 1, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Nadav Barkai, Lior Katz, Gal Amit
  • Liquid toner composition
    Patent number: 9122206
    Abstract: The present disclosure is drawn to a liquid toner composition comprising: (a) a carrier liquid; (b) particles comprising (i) a first component comprising a polymer having acidic side groups; and (ii) a second component comprising a polymer having ester side groups; and (c) a charge director. Also described herein are a method of producing a liquid toner composition and a method of electrophotographic printing using a liquid toner composition.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: September 1, 2015
    Assignee: HEWLETT-PACKARD INDIGO B.V.
    Inventors: Stella Stolin Roditi, Fernanda Orlik, Haim Cohen, Albert Teishev, Nava Klein
  • Printer with auto-cleaning operation and method thereof
    Patent number: 9113004
    Abstract: A method for performing auto-cleaning in a printer, which is designed for printing on a substrate, may include periodically printing an auto-cleaner print on the substrate in a predetermined frequency. The method may also include scanning the auto-cleaner print to obtain scanned image data of the auto-cleaner print. The method may further include analyzing the scanned image data to determine extent of presence of artifacts indicative of dirt or ink residue. The method may also include based on the extent of presence of the artifacts modifying the frequency.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: August 18, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventor: Yael Kowal
  • Color image data compression
    Patent number: 9113115
    Abstract: Color image data is compressed by determining the number of colors within a cell of an input image, each cell comprising an N×M array of pixels; in response to determining that the number of colors is greater than a first predetermined threshold, compress the cell using lossy compression; and in response to determining that the number of colors is less than the first predetermined threshold, reduce the number of colors.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: August 18, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Noam Shaham, Gideon Amir, Ram Dagan, Michael Melamed