Patents Assigned to Xaar Technology Limited
  • Patent number: 10906316
    Abstract: A method for the manufacture of a microelectromechanical systems (MEMS) device comprising bonded components which together define a chamber in the device, which method comprises forming a bonding material layer on a surface of a first component, patterning the bonding material layer and, optionally, the first component and bonding a second component to the patterned bonding material layer and first component. The forming of the bonding material layer comprises partially curing a curable material and the bonding of the second component to the patterned bonding material layer and the first component comprises fully curing the partially cured material.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 2, 2021
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventor: Bruce Scott
  • Publication number: 20210013394
    Abstract: A piezoelectric thin film element having a first electrode, a second electrode and a piezoelectric thin film between the electrodes, wherein the thin film comprises a laminate having two or more piezoelectric thin film layers and wherein a first thin film layer is doped by one or more dopants and a second film layer is doped by one or more dopants and wherein at least one dopant of the second thin film layer is different from the dopant or dopants of the first thin film layer.
    Type: Application
    Filed: September 8, 2020
    Publication date: January 14, 2021
    Applicant: XAAR TECHNOLOGY LIMITED
    Inventors: Peter MARDILOVICH, Susan TROLIER-MCKINSTRY
  • Patent number: 10889110
    Abstract: A method for depositing droplets onto a medium, utilising a droplet deposition head is provided. The head used in the method includes: an array of fluid chambers separated by interspersed walls, each fluid chamber communicating with an aperture for the release of fluid droplets and each wall separating two neighbouring chambers. Each wall is actuable such that, in response to a first voltage, it will deform so as to decrease the volume of one chamber and increase the volume of the other chamber, and, in response to a second voltage, it will deform so as to cause the opposite effect on the volumes of its neighbouring chambers.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 12, 2021
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Nicholas Marc Jackson, Angus Condie
  • Patent number: 10875302
    Abstract: actuator component for a droplet deposition head made up of a number of patterned layers, each layer extending in a plane normal to a layering direction, with the layers being stacked one upon another in said layering direction. A row of fluid chambers is formed within the layers, with the row extending in a row direction, which is substantially perpendicular to the layering direction. Each fluid chamber is provided with a respective nozzle and a respective actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles. A row of inlet passageways is also formed within the layers of the actuator component, with the row extending in the row direction. Each inlet passageway is fluidically connected so as to supply fluid to a respective one of said fluid chambers.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: December 29, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Robert Errol McMullen, Peter Mardilovich, Peter Boltryk
  • Publication number: 20200369030
    Abstract: A method for the manufacture of a microelectromechanical systems (MEMS) device comprising bonded components which together define a chamber in the device, which method comprises forming a bonding material layer on a surface of a first component, patterning the bonding material layer and, optionally, the first component and bonding a second component to the patterned bonding material layer and first component. The forming of the bonding material layer comprises partially curing a curable material and the bonding of the second component to the patterned bonding material layer and the first component comprises fully curing the partially cured material.
    Type: Application
    Filed: September 10, 2018
    Publication date: November 26, 2020
    Applicant: XAAR TECHNOLOGY LIMITED
    Inventor: Bruce SCOTT
  • Publication number: 20200369054
    Abstract: A droplet deposition head including a datum surface arrangement for alignment of the head relative to an external mounting component in either a vertical mounting mode in which the head is held against a vertical mounting plate or a horizontal mounting mode where the head is held against a horizontal mounting plate. The datum surface arrangement comprising at least seven datum surfaces (x1; y1, y2, y3; z1, z2, z3) provided on the head, wherein five of the seven datum surfaces are provided for alignment in both vertical and horizontal mounting modes, and wherein a sixth datum surface (z3) is provided for alignment exclusively in said horizontal mounting mode and a seventh datum surface (y3) is provided for alignment exclusively in said vertical mounting mode.
    Type: Application
    Filed: June 15, 2020
    Publication date: November 26, 2020
    Applicant: Xaar Technology Limited
    Inventors: Ulrik Manfred NAUNTON, Stephen Mark Jeapes, Richard Hugh Lewis, Jesus Garcia Maza, Arturo Garcia Gomez, Robert John Charles Dunn
  • Patent number: 10843459
    Abstract: A test circuit to determine the capacitance of an actuator element in an actuator element array, wherein the test circuit comprises: a controller; a source to generate test inputs; measurement circuitry to measure one or more test values on a test path between the test circuit and the actuator element; wherein the controller is configured to, for a test period: control a first switch associated with the actuator element to connect the actuator element to the test path; control the source to generate a first test input; and determine a total capacitance of the actuator element from a first test value generated in response to the first test input; and determine the capacitance of the actuator element (CACT) from the total capacitance (CPAR+CACT).
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: November 24, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Neil Christopher Bird, Mujahid-ul Islam
  • Patent number: 10807359
    Abstract: There is provided a droplet deposition apparatus comprising: control circuitry configured to generate a common drive waveform; storage to store data, wherein the storage comprises a buffer to store scheduled image data relating to one or more pixels; a droplet deposition head having one or more actuator elements configured to be driven in response to drive pulses derived from the common drive waveform; and wherein the common drive waveform comprises a plurality of pixel periods comprising a firing phase and a non-firing phase, each firing phase comprising a firing pulse and each non-firing phase comprising a non-firing pulse, wherein the characteristics of each non-firing pulse are defined in response to the data in storage, and wherein, the firing pulse of a first pixel period is applied as a drive pulse to an actuator element based on the scheduled image data relating to a first pixel, and wherein the non-firing pulse of the first pixel period is applied as a drive pulse to the actuator element based on pas
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 20, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Ian Anthony Hurst, Neil Christopher Bird, Stephen Mark Jeapes
  • Publication number: 20200262203
    Abstract: An actuator component for a droplet deposition head, comprising: a plurality of fluid chambers, each fluid chamber being provided with a respective nozzle and a respective piezoelectric actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles by deforming a membrane, which bounds, in part, the chamber in question; wherein each piezoelectric actuating element comprises: a piezoelectric member having a top side and an opposing bottom side, the bottom side being nearest to the membrane, the top and bottom sides being spaced apart in a thickness direction; a lower electrode, disposed adjacent said bottom side of the piezoelectric member; an upper electrode, disposed adjacent said top side of the piezoelectric member; wherein each upper electrode comprises: a first layer, which is formed of a first conductive material; a second layer, which is formed of a second conductive material, the first layer being disposed between the secon
    Type: Application
    Filed: September 11, 2018
    Publication date: August 20, 2020
    Applicant: XAAR TECHNOLOGY LIMITED
    Inventors: Peter MARDILOVICH, Robert Errol MCMULLEN, Subramanian SIVARAMAKRISHNAN
  • Patent number: 10744764
    Abstract: A circuit or a droplet deposition apparatus, the circuit configured to generate a drive waveform having a drive pulse, a first non-ejection pulse and a second non-ejection pulse, and wherein the first non-ejection pulse is inverted with respect to the second non-ejection pulse.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 18, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventor: Mario Massucci
  • Patent number: 10710362
    Abstract: Disclosed is a method of providing adjustment data for a droplet deposition head (such as a printhead), or a data processing component therefor. The method makes use of test data, which has been collected by operating the droplet deposition head (or a test droplet deposition head of substantially the same construction, e.g from the same batch), using a set of test waveforms, at a number of frequencies within a test range, and by recording the volume and velocity of the thus-ejected droplets, with these recorded values (volr, velr) being represented within the test data. Each of the set of test waveforms includes a basic drive waveform and a number of adjusted drive waveforms, each of which corresponds to the basic drive waveform, but with a particular waveform parameter adjusted by a corresponding amount. This waveform parameter is a continuous variable, such as pulse width or pulse amplitude.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 14, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Tony Cruz-Uribe, Subramanian Sivaramakrishan, Raymond Paul Marko Dorrestijn
  • Patent number: 10682853
    Abstract: A droplet deposition head includes: one or more manifold components, providing one or more fluid inlets, each of which is connectable to a fluid supply system so that the head can receive a corresponding droplet fluid; and two or more arrays of fluid chambers, each chamber being provided with a respective actuating element and a respective nozzle, each actuating element being actuable to eject a droplet of fluid in an ejection direction through the corresponding one of the nozzles, each array extending in an array direction. The head extends, in the ejection direction, from a first end, at which the one or more fluid inlets are located, to a second end, at which the arrays of fluid chambers are located.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: June 16, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Athanasios Kanaris, Colin Brook, Alfonso Cameno Salinas, Jesus Garcia Maza, Artur Jedynak
  • Patent number: 10682873
    Abstract: A droplet deposition head including a datum surface arrangement for alignment of the head relative to an external mounting component in either a vertical mounting mode in which the head is held against a vertical mounting plate or a horizontal mounting mode where the head is held against a horizontal mounting plate. The datum surface arrangement comprising at least seven datum surfaces (x1; y1, y2, y3; z1, z2, z3) provided on the head, wherein five of the seven datum surfaces are provided for alignment in both vertical and horizontal mounting modes, and wherein a sixth datum surface (z3) is provided for alignment exclusively in said horizontal mounting mode and a seventh datum surface (y3) is provided for alignment exclusively in said vertical mounting mode.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: June 16, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Ulrik Manfred Naunton, Stephen Mark Jeapes, Richard Hugh Lewis, Jesus Garcia Maza, Arturo Garcia Gomez, Robert John Charles Dunn
  • Patent number: 10654286
    Abstract: Broadly speaking, embodiments of the present technique provide apparatus and methods to print an image using masking techniques that control the operation of a droplet deposition head having at least one faulty nozzle. More specifically, an image is analysed to determine a pixel colour density for each pixel of the image. A masking technique is provided which may distribute the droplets (or sub-droplets) that a faulty nozzle is assigned to print among one or more neighbouring, functioning nozzles.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 19, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Juan Reyero, Stephen Mark Jeapes, Jesus Garcia
  • Patent number: 10583651
    Abstract: A droplet deposition head having a fluid chamber connected to a droplet ejection nozzle and to a reservoir for the fluid, and a piezoelectric actuator element formed at least in part by a fluid chamber wall having an electrode thereon, which element is displaceable in response to a drive voltage to generate a pressure in the chamber to eject a droplet of fluid from the chamber through the nozzle wherein the electrode is provided with a passivation coating which comprises, at least in part, a laminate comprising an inorganic insulating layer nearest to or contacting the electrode and an organic insulating layer overlying the inorganic insulating layer wherein defects in the insulating layers tend to be misaligned at the interface there between and wherein the inorganic insulating layer has thickness less than or equal to 500 nm and the organic insulating layer has a thickness less than 3 ?m.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: March 10, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Song-Won Ko, Peter Mardilovich, John Philip Tatum, Alexandru Cazacu
  • Patent number: 10541360
    Abstract: A piezoelectric thin film element comprising a first electrode, a second electrode and one or more piezoelectric thin films there between wherein the first electrode is a platinum metal electrode having an average grain size greater than 50 nm and wherein a piezoelectric thin film adjacent the platinum metal electrode comprises a laminate having a plurality of piezoelectric thin film layers wherein a piezoelectric thin film layer contacting the platinum metal electrode comprises lead zirconate titanate (PZT) of composition at or about PbZrxTi1-xO3 where 0<x?0.60 and has a degree of pseudo cubic {100} orientation greater than or equal to 90%.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: January 21, 2020
    Assignee: Xaar Technology Limited
    Inventors: Peter Mardilovich, Song-Won Ko, Susan Trolier-McKinstry, Trent Borman
  • Patent number: 10532572
    Abstract: An inkjet printhead having a fluidic chamber substrate, the fluidic chamber substrate having at least two droplet units provided in an array therein, the droplet units comprising: a fluidic chamber, a first fluidic port provided at a first surface of the fluidic chamber substrate, wherein the first fluidic port is in fluidic communication with the fluidic chamber, a nozzle formed in a nozzle layer provided at a second surface of the fluidic chamber substrate; and a vibration plate provided at the first surface of the fluidic chamber substrate, the vibration plate comprising an actuator for effecting pressure fluctuations within the fluidic chamber; and wherein the droplet units are arranged adjacent each other about an axis extending substantially in a width direction of the droplet units, wherein the first fluidic ports of the droplet units are staggered a first stagger offset distance from each other substantially in a length direction of the droplet units, and wherein a wiring layer extends over the first
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 14, 2020
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Robert Errol McMullen, Peter Mardilovich
  • Patent number: 10513113
    Abstract: A printhead circuit for providing pulses for driving two or more actuating elements, the circuit comprising a cold switch drive circuit, for driving an actuating element for a first phase of a first pulse, the cold switch drive circuit having a cold drive switch for selectively coupling a drive waveform to the actuating element during the first phase according to a print signal; and a hot switch drive circuit, for driving the actuating element for a second phase of the first pulse, wherein the hot switch drive circuit is configured to drive the actuating element during the second phase according to an actuating element compensation indication signal.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: December 24, 2019
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Andrew L van Brocklin, Stephen Mark Jeapes, Ian Anthony Hurst
  • Patent number: 10513111
    Abstract: A drive circuit (100) for driving actuators of a printhead (97) from a common drive waveform has a switching circuit (32) for coupling the common drive waveform to an actuator (1,2), and a timing circuit (10) to control the switching circuit to form a drive pulse from the common drive waveform. The drive pulse is trimmed by controlling a duration (TTRIM) of a step at an intermediate level (VHOLD) in the drive pulse. This can improve the trade-off between available range of trimming and thermal efficiency because the voltage drop across the switching circuit can be reduced, compared to trimming only the height. Decoupling during a flat portion of the common drive waveform can enable the timing of the decoupling to be more relaxed compared to decoupling during a slope. Such relaxing can enable costs, complexity and thermal loading to be reduced.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: December 24, 2019
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Anirban Lahiri, Mujahid-ul Islam, Mario Massucci, Ian Anthony Hurst, Stephen Mark Jeapes, Neil Christopher Bird, Anthony Saugey
  • Patent number: 10500854
    Abstract: An actuator component for a droplet deposition head that includes: a plurality of fluid chambers arranged side-by-side in an array, with certain of the fluid chambers being firing chambers, each of which is provided with at least one piezoelectric actuating element for causing droplet ejection from a nozzle for that firing chamber; and a plurality of non-actuable walls, each of which is formed of piezoelectric material and bounds at least one of the firing chambers.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 10, 2019
    Assignee: XAAR TECHNOLOGY LIMITED
    Inventors: Angus Condie, Nicholas Marc Jackson, Simon James Hubbard