Patents by Inventor Emma Rose Kerr

Emma Rose Kerr 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: 9579889
    Abstract: A method of ejecting an ink droplet from an inkjet nozzle device having an actuator and a meniscus pinned across a nozzle opening. The method includes the steps of: delivering a sub-ejection pulse to the actuator for perturbing the meniscus from a quiescent state; and subsequently delivering an ejection pulse to the actuator at an instant when the meniscus is perturbed from its quiescent state, the ejection pulse ejecting the ink droplet from the nozzle opening. A time period between a trailing edge of the sub-ejection pulse and a leading edge of the ejection pulse controls a droplet volume of the ejected ink droplet.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: February 28, 2017
    Assignee: Memjet Technology Limited
    Inventors: Vincent Patrick Lawlor, Gregory John McAvoy, Ronan Padraig Sean O'Reilly, Emma Rose Kerr, Misty Bagnat
  • Patent number: 9550359
    Abstract: An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: January 24, 2017
    Assignee: Memjet Technology Limited
    Inventors: Ronan Padraig Sean O'Reilly, Gregory John McAvoy, Emma Rose Kerr, Vincent Patrick Lawlor, Misty Bagnat, Brian Kevin Donohoe, Eimear Ryan
  • Publication number: 20160129688
    Abstract: A method of ejecting an ink droplet from an inkjet nozzle device having an actuator and a meniscus pinned across a nozzle opening. The method includes the steps of: delivering a sub-ejection pulse to the actuator for perturbing the meniscus from a quiescent state; and subsequently delivering an ejection pulse to the actuator at an instant when the meniscus is perturbed from its quiescent state, the ejection pulse ejecting the ink droplet from the nozzle opening. A time period between a trailing edge of the sub-ejection pulse and a leading edge of the ejection pulse controls a droplet volume of the ejected ink droplet.
    Type: Application
    Filed: September 25, 2015
    Publication date: May 12, 2016
    Inventors: Vincent Patrick Lawlor, Gregory John McAvoy, Ronan Padraig Sean O'Reilly, Emma Rose Kerr, Misty Bagnat
  • Publication number: 20160075135
    Abstract: An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 17, 2016
    Inventors: Ronan Padraig Sean O'Reilly, Gregory John McAvoy, Emma Rose Kerr, Vincent Patrick Lawlor, Misty Bagnat, Brian Kevin Donohoe, Eimear Ryan
  • Publication number: 20160075134
    Abstract: An inkjet printhead integrated circuit includes: a silicon-on-insulator substrate having a first layer of silicon, an insulator layer disposed on the first layer of silicon and a second layer of silicon disposed on the insulator layer; a nozzle plate disposed on the second layer of silicon; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber defined in the second layer of silicon, each nozzle chamber having a roof which is part of the nozzle plate; an actuator for ejecting ink through the nozzle opening; and drive circuitry connected to the actuator.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 17, 2016
    Inventors: Ronan Padraig Sean O'Reilly, Gregory John McAvoy, Emma Rose Kerr, Vincent Patrick Lawlor, Misty Bagnat, Brian Kevin Donohoe, Eimear Ryan
  • Patent number: 8793873
    Abstract: A method of providing a printhead assembly having a hydrophilic ink pathway and a hydrophobic ink ejection face. The method includes the steps of: providing a printhead assembly comprising a printhead attached to an ink supply manifold, the printhead comprising a nozzle plate having a hydrophobic coating and a protective metal film disposed on the hydrophobic coating; treating surfaces of an ink pathway in the printhead assembly with a solution comprising an alkoxylated polyethyleneimine; drying the surfaces; and removing the protective metal film so as to reveal the hydrophobic coating.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: August 5, 2014
    Assignee: Memjet Technology Ltd.
    Inventors: Simon Fielder, Lewis Matich, Kia Silverbrook, Gregory John McAvoy, Rónán Pádraig Seán O'Reilly, Emma Rose Kerr
  • Patent number: 8714677
    Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. The printhead is comprised of a plurality of printhead modules having first and second opposite ends butted across a width of a page. Each butting pair of printhead modules defines a common join region, wherein a nozzle pitch across the join region exceeds one nozzle pitch, one nozzle pitch being defined as a minimum longitudinal distance between a pair of nozzles in a same nozzle row. A first nozzle positioned at the first end of a first printhead module in a butting pair is configured to fire ink droplets into a respective join region.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: May 6, 2014
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8672454
    Abstract: An inkjet printhead includes a ceramic nozzle plate having a plurality of movable portions defined therein and a polymeric material covering the nozzle plate and the plurality of movable portions.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: March 18, 2014
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Kia Silverbrook, Emma Rose Kerr, Misty Bagnat, Vincent Patrick Lawlor
  • Patent number: 8540344
    Abstract: A stationary pagewidth inkjet printhead is comprised of a plurality of printhead integrated circuits butted end-on-end across the pagewidth. The printhead includes one or more nozzle rows extending along a longitudinal axis of the printhead, each nozzle row comprising a plurality of nozzles. One or more of the nozzles are configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: September 24, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8529005
    Abstract: A method of compensating for a dead nozzle in a stationary pagewidth printhead. The method includes the steps of: (i) identifying the dead nozzle; (ii) selecting a functioning nozzle in a same nozzle row as the dead nozzle; and firing ink droplets from the selected functioning nozzle at a primary dot position associated with the dead nozzle.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: September 10, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8506052
    Abstract: An inkjet nozzle assembly having: a nozzle chamber for containing ink, the nozzle chamber including a floor and a roof having a nozzle opening defined therein; and a plurality of moveable paddles defining part of the roof. The plurality of paddles are actuable to cause ejection of an ink droplet from the nozzle opening. Each paddle includes a thermal bend actuator, and each actuator is independently controllable via respective drive circuitry such that a direction of droplet ejection from the nozzle opening is controllable by independent movement of each paddle.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 13, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8491803
    Abstract: A method of hydrophobizing a frontside surface of an integrated circuit. The method includes the steps of: (a) depositing a hydrophobic polymeric layer onto the frontside surface; (b) depositing a protective metal film onto the hydrophobic polymeric layer; (c) depositing a sacrificial material onto the metal film; (d) patterning the sacrificial material; (e) etching through the metal film, the hydrophobic polymeric layer and the frontside surface; (f) performing MEMS processing steps on a backside of the integrated circuit; (g) subjecting the integrated circuit to an oxidizing plasma, wherein the metal film protects the hydrophobic polymeric layer from the oxidizing plasma; and (h) removing the protective metal film to provide an integrated circuit having a relatively hydrophobic patterned frontside surface.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: July 23, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Kia Silverbrook
  • Patent number: 8485623
    Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, such that a printed dot density exceeds a nozzle density of the printhead.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: July 16, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8434844
    Abstract: A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configurable to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, and each nozzle has an associated primary dot position. The printhead is configured to compensate for a dead nozzle by printing from a selected functioning nozzle positioned in a same nozzle row as the dead nozzle. The selected functioning nozzle is configured to fire some ink droplets at the primary dot position associated with the dead nozzle and to fire some ink droplets at its own primary dot position.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: May 7, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8425004
    Abstract: A printhead having an ink ejection face, wherein at least part of the ink ejection face is coated with a polymeric material. The polymeric material is comprised of a polymerized siloxane incorporating nanoparticles. The printhead may be compatible with various printhead maintenance operations, ink characteristics and inkjet nozzle types.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: April 23, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Rónán Pádraig Seán O'Reilly, Emma Rose Kerr
  • Patent number: 8388111
    Abstract: A method of printing at a dot density exceeding a nozzle density in a stationary pagewidth printhead. The method includes the steps of: (i) advancing a print medium transversely past the stationary printhead at a rate of one line per one line-time; and (ii) firing droplets of ink from predetermined nozzles in a nozzle row to create successive lines of print. Some or all of the predetermined nozzles fire droplets of ink at a plurality of predetermined different dot positions along a longitudinal axis of the printhead during one line-time, such that the printed dot density in each line of print exceeds the nozzle density.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: March 5, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8353577
    Abstract: A method of controlling a direction of droplet ejection from an inkjet nozzle having a plurality of moveable paddles, the method includes the steps of: (i) actuating a first thermal bend actuator via respective first drive circuitry such that a respective first paddle bends towards a floor of the nozzle chamber; (ii) actuating a second thermal bend actuator via respective second drive circuitry such that a respective second paddle bends towards a floor of the nozzle chamber; and (iii) thereby ejecting a droplet of ink. Actuation of the first and second thermal bend actuators is independently controlled via the first and second drive circuitry so as to control the direction of droplet ejection.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 15, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8348388
    Abstract: A printhead integrated circuit (IC) for a stationary pagewidth printhead, includes nozzle rows extending along a longitudinal axis thereof. A length of a printable zone corresponding to the nozzle row is longer than a length of the nozzle row.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 8, 2013
    Assignee: Zamitec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8342643
    Abstract: A printhead integrated circuit includes one or more nozzle rows extending along a longitudinal axis thereof. The printhead IC has first and second ends for butting engagement with other printhead ICs so as to define a pagewidth printhead. Each nozzle has an associated primary dot position, wherein a first nozzle positioned at the first end is configured to fire some ink droplets skewed towards the first end in addition to firing some ink droplets at its own primary dot position.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 1, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Emma Rose Kerr, Rónán Pádraig Seán O'Reilly, Vincent Patrick Lawlor, Misty Bagnat
  • Patent number: 8342650
    Abstract: A printhead having an ink ejection face coated with a hydrophobic polymeric material. The polymeric material is comprised of a polysilsesquioxane, such as poly(methylsilsesquioxane) or poly(phenylsilsesquioxane). The printhead is compatible with various printhead maintenance operations requiring contact with the ink ejection face.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: January 1, 2013
    Assignee: Zamtec Ltd
    Inventors: Gregory John McAvoy, Rónán Pádraig Seán O'Reilly, Emma Rose Kerr