Patents Assigned to Memjet Technology Limited
  • Patent number: 11940820
    Abstract: A pressure regulating valve for an inkjet printhead. The valve includes: a fluid flow path defined between a valve inlet and a valve outlet; an orifice positioned in the flow path; a movable valve member configured for regulating a fluid flow rate through the orifice; a regulator chamber having the valve outlet and including a diaphragm operatively connected to the valve member, such that movement of the diaphragm moves the valve member relative to the orifice; and a biasing mechanism for resiliently biasing the diaphragm away from the orifice. An outer surface of the valve member is non-linearly flared away from the diaphragm.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: March 26, 2024
    Assignee: Memjet Technology Limited
    Inventors: Zhenya Yourlo, Mohammadreza Behi, Peter Crichton, Norman Micheal Berry
  • Patent number: 11919074
    Abstract: An additive manufacturing method using an inkjet printhead supplied with a binder fluid, said method comprising the steps of: (a) providing a layer of powdered build material including a monomer; (b) selectively jetting the binder fluid onto predetermined regions of the layer of powdered build material, the binder fluid comprising a catalyst; (c) optionally exposing the layer of powdered build material to an energy source to initiate polymerization of the monomer; and (d) optionally repeating steps (a) to (c).
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: March 5, 2024
    Assignee: Memjet Technology Limited
    Inventor: Simon Fielder
  • Patent number: 11884084
    Abstract: A printing unit includes: three elongate printheads positioned in a staggered overlapping arrangement for spanning across a media feed path, wherein a first printhead and a second printhead are longitudinally spaced apart and positioned in a row across the media feed path and a third printhead is offset from and overlaps with both the first and second printheads; three wipers for longitudinally wiping respective printheads in a direction perpendicular to a media feed direction, each wiper being parked at one longitudinal end of its respective printhead. One of the wipers, in its parked position, is positioned in a space between the first and second printheads.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: January 30, 2024
    Assignee: Memjet Technology Limited
    Inventors: Mark Profaca, David Oliver Burke, Billy Sy, Gilbert Alemana, Christopher Hibbard, Rommel Balala
  • Patent number: 11872823
    Abstract: A thread-coating module includes: a base plate having a printhead opening; an inkjet printhead received in the printhead opening; and a chamber unit having a mouth for engagement with the base plate and an ink-collection slot opposing the printhead. The chamber unit and the base plate are movable relative to each other for opening and closing a coating chamber comprising the base plate and the chamber unit, with the ink-collection slot being positioned opposite the printhead in the coating chamber.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: January 16, 2024
    Assignee: Memjet Technology Limited
    Inventor: Mark Profaca
  • Patent number: 11840098
    Abstract: A printing device includes: an inkjet printhead; a lift mechanism for raising and lowering the printhead through a lift path; and a pivotally movable spit flap positioned in the lift path. The spit flap is configured to swing away from the lift path when the printhead contacts the spit flap during lowering of the printhead.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: December 12, 2023
    Assignee: Memjet Technology Limited
    Inventors: David Burke, Jason Mark Thelander, Dan Baterna, Rommel Balala, Peter Crichton
  • Patent number: 11831841
    Abstract: A method of printing an image using a printing system having first and second printheads supplied with a same ink. The method includes the steps of: allocating first lines of the image to the first printhead; allocating second lines of the image to the second printhead; dithering the first lines of the image using a selected first dither mask; dithering the second lines of the image using a selected second dither mask; printing the dithered first lines of the image using the first printhead; and printing the dithered second lines of the image using the second printhead. The first and second dither masks are selected based on a relative alignment of the first and second printheads.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: November 28, 2023
    Assignee: Memjet Technology Limited
    Inventors: Rodney Hardy, James Lawrence
  • Patent number: 11823943
    Abstract: A wafer assembly for use in a MEMS fabrication process. The wafer package includes: a MEMS wafer having a first side and an opposite second side; a silicone-free peel tape releasably attached to the first side of the wafer; a wafer bonding tape attached to the peel tape; and a carrier substrate releasably attached to the first wafer bonding tape.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: November 21, 2023
    Assignee: Memjet Technology Limited
    Inventors: Nicolas Arnal, Troy Pasiola Quimpo, Angus North
  • Patent number: 11820139
    Abstract: A print chip includes: an elongate silicon substrate defining nominal leading and trailing longitudinal sides of the print chip; circuitry layers positioned on the silicon substrate; and a MEMS layer positioned on the circuitry layers. The MEMS layer includes a plurality of parallel nozzle rows, each nozzle row having a plurality of inkjet nozzle devices arranged in a main row portion and a dropped row portion offset from the main row portion. The circuitry layers include data latches configured to provide dot data for the inkjet nozzle devices. A first row of data latches is positioned adjacent a leading row of the main row portion, and a second row of data latches is positioned adjacent a trailing row of the dropped row portion.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: November 21, 2023
    Assignee: Memjet Technology Limited
    Inventors: Julie Catherine Hogan, Ronan Palliser, John Sheahan, Brian Brown, Caitriona Forbes, Pat Lehane
  • Patent number: 11813861
    Abstract: A method of printing an image from a printhead module having a plurality of horizontal nozzle rows. Each nozzle row has a main row portion and a corresponding dropped row portion vertically offset from the main row portion. The method includes the steps of: determining a predetermined delay for the dropped row portions based on the offset, a print speed and a print resolution; allocating dot data for image lines to respective nozzle rows based on the print speed and print resolution, sending first dot data for each main row portion and second dot data for each dropped row portion to the printhead module; and firing nozzles from the main row portions and dropped row portion in a predetermined sequence. Each dropped row portion is fired independently of its corresponding main row portion and delayed relative to its corresponding main row portion by the predetermined delay.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: November 14, 2023
    Assignee: Memjet Technology Limited
    Inventors: Julie Catherine Hogan, Ronan Palliser, John Sheahan, Brian Brown, Caitriona Forbes, Pat Lehane
  • Patent number: 11807006
    Abstract: A printhead assembly includes: an ink manifold comprised of a first metal; printhead chips mounted on the ink manifold and receiving ink therefrom, each printhead chip having a plurality of bond pads; a PCB mounted on the ink manifold, the PCB having a plurality of contact pads; a plurality of wirebonds interconnecting the bond pads and the contact pads, the wirebonds being comprised of a second metal; an encapsulant material encapsulating the wirebonds, the bond pads and the contact pads; and a voltage source. The ink manifold and the wirebonds are electrically connectable to the voltage source to provide cathodic protection of the wirebonds.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: November 7, 2023
    Assignee: Memjet Technology Limited
    Inventor: Glenn Horrocks
  • Patent number: 11809929
    Abstract: A method of printing onto a planar box substrate used for assembling a box having predetermined box dimensions. The method includes the steps of: determining box dimensions based on the planar box substrate; retrieving generic instructions for image content to be printed on the box substrate; preparing box-specific transformations using the generic instructions and the box dimensions; applying the box-specific transformations on design components to generate image content portions commensurate with image content regions; generating image data based on the image content portions; and printing onto the box substrate using the image data.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: November 7, 2023
    Assignee: Memjet Technology Limited
    Inventor: Terry Wozniak
  • Patent number: 11789473
    Abstract: An ink delivery system for supplying ink to an inkjet printhead at a predetermined backpressure. The ink delivery system includes: a pressure regulating valve connected to a printhead inlet port; an ink tank connected to a valve inlet of the pressure regulating valve; and a pump connected to a printhead outlet port. The backpressure of ink supplied to the printhead is controlled by: a height h1 of ink in the ink tank relative to a valve orifice, a height h2 of the valve orifice relative to the printhead, a position of a valve member relative to the orifice and a pump speed of the pump.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: October 17, 2023
    Assignee: Memjet Technology Limited
    Inventors: Zhenya Yourlo, Mohammadreza Behi, Peter Crichton, Norman Micheal Berry
  • Patent number: 11787182
    Abstract: A method of printing an image from a printhead module having a plurality of horizontal nozzle rows, the method including the steps of: allocating first dot data for an image line of the image to nozzles of a main row portion of a first nozzle row; allocating second dot data for the image line to nozzles of a dropped row portion of a second nozzle row; and sending the first and second dot data to the printhead module and firing respective droplets. Each nozzle row of the printhead module has a same number of nozzles N; and the first nozzle row and the second nozzle row are non-corresponding nozzle rows, such that a number of nozzles contained in the main portion of the first nozzle row and a number of nozzles contained in the dropped row portion of the second nozzle row is greater or fewer than N nozzles.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: October 17, 2023
    Assignee: Memjet Technology Limited
    Inventors: Brian Brown, Julie Hogan, Ronan Palliser, Keshu Nazneen, Juliette Le Hir, Rodney Hardy
  • Patent number: 11782463
    Abstract: A pressure regulating valve for an inkjet printhead. The valve includes: a valve inlet connect to a valve outlet; via a flow path; a first orifice positioned in the flow path having a sealable first seat; a movable first valve member configured for sealing engagement with the first seat; a second orifice positioned in the flow path; a movable second valve member configured for regulating a fluid flow rate through the second orifice; a regulator chamber having the valve outlet and comprising a diaphragm operatively connected to the second valve member, such that movement of the diaphragm moves the second valve member relative to the second orifice; and a biasing mechanism for resiliently biasing the diaphragm away from the second orifice.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: October 10, 2023
    Assignee: Memjet Technology Limited
    Inventors: Zhenya Yourlo, Mohammadreza Behi, Peter Crichton, Norman Micheal Berry
  • Patent number: 11772376
    Abstract: A method of printing an image from a printhead module having a plurality of horizontal ink planes M supplied with a same ink. Each ink plane has a nozzle row and the nozzles rows of all ink planes have vertically aligned nozzles. The method includes the steps of: defining contiguous span groups along each nozzle row, each span group containing N nozzles; allocating dot data for each image line of the image to a predetermined number of nozzles P in each span group of each nozzle row; sending the dot data to the printhead module and firing nozzles sequentially from the ink planes to print the image line. Only one nozzle from each span group in a same nozzle row is fired simultaneously, N is an integer multiple of M, and P is N divided by M.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: October 3, 2023
    Assignee: Memjet Technology Limited
    Inventors: Julie Catherine Hogan, Ronan Palliser, John Sheahan, Brian Brown, Caitriona Forbes, Pat Lehane
  • Patent number: 11760094
    Abstract: A printhead module for a modular pagewide inkjet printhead. The printhead module has only four rows of print chips configured for printing four different inks, each print chip having multiple nozzle rows for redundant monochrome printing of one respective ink. A print zone of the printhead module has a width of less than 100 mm across the four rows of print chips.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: September 19, 2023
    Assignee: Memjet Technology Limited
    Inventors: Jason Mark Thelander, David Oliver Burke
  • Patent number: 11724502
    Abstract: A method of printing an image from a printhead module having a plurality of horizontal nozzle rows. The method includes the steps of: allocating first dot data for an image line of the image to nozzles in a main row portion of a first nozzle row; allocating second dot data for the image line to nozzles in a dropped row portion of the first nozzle row; sending the first and second dot data to the printhead module and firing respective droplets. Some bits of the first dot data correspond to pixels of the image line aligned with the dropped row portion, and some bits of the second dot data correspond to pixels of the image line aligned with the main row portion.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: August 15, 2023
    Assignee: Memjet Technology Limited
    Inventors: Brian Brown, Julie Hogan, Ronan Palliser, Keshu Nazneen, Juliette Le Hir, Rodney Hardy
  • Patent number: 11718096
    Abstract: A printhead module includes: a monolithic substrate having alternate longitudinal slots and longitudinal ink supply channels defined through a thickness of the substrate and extending parallel with each other along a length of the substrate; and a plurality of rows of print chips mounted on a front face of the substrate, each row of print chips receiving ink only from a respective one of the ink supply channels. Each one of the longitudinal slots is configured to supply power and data only to a respective one of the rows of print chips.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: August 8, 2023
    Assignee: Memjet Technology Limited
    Inventors: Jason Mark Thelander, David Oliver Burke
  • Patent number: 11712905
    Abstract: An integrated inkjet module includes: a support chassis configured for fixedly mounting over a media feed path; a maintenance chassis mounted on the support chassis; a print bar chassis liftably mounted on the maintenance chassis, the print bar chassis having a plurality of print modules mounted thereon, each print module comprising a respective printhead; and an aerosol collector fixed to the support chassis and positioned for collecting ink mist generated during printing.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: August 1, 2023
    Assignee: Memjet Technology Limited
    Inventor: Mark Profaca
  • Patent number: 11701883
    Abstract: An electronic assembly includes a substrate having a die and PCB mounted thereon. Wirebonds interconnect bond pads of the die with contact pads of the PCB, each wirebond having a first end portion bonded to a respective bond pad, an opposite second end portion bonded to a respective contact pad and an intermediate section extending between the first and second end portions. A dam encapsulant encapsulates each of the first and second end portions, a first fill encapsulant contacts the substrate and the dam encapsulant; and a second fill encapsulant overlies the first fill encapsulant. The first fill encapsulant has a lower modulus of elasticity than the second fill encapsulant and the dam encapsulant.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: July 18, 2023
    Assignee: Memjet Technology Limited
    Inventors: Elmer Dimaculangan Perez, See-Huat Tan, Glenn Horrocks, Mohammad Hossain, Michael John Webb, Pascal Blanquer, Erik Coolen