Patents by Inventor David Tyvoll

David Tyvoll 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: 10730304
    Abstract: A method of inhibiting evaporation of water from inkjet nozzles of a printhead. The method includes the steps of: providing a wiping material infused with a liquid composition comprising an evaporation inhibitor; and wiping the wiping material over a nozzle plate of the printhead. The evaporation inhibitor is transferred to the nozzle plate during wiping and thereby inhibits evaporation of water from the inkjet nozzles.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 4, 2020
    Assignee: Memjet Technology Limited
    Inventors: Simon Fielder, David Tyvoll, Jingyi Zhou
  • Publication number: 20200062981
    Abstract: An aqueous-based inkjet ink for a thermal inkjet printhead includes: a pigment; 2 to 90 ppm ammonium ions; and an ink vehicle. The ink has a pH in the range of 8 to 9.5 and exhibits improved lifetime in thermal inkjet printheads with minimal loss of print quality.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Simon Fielder, Alison Chong, David Tyvoll, Tim Hudson, Roger Davey, Ellaine Munton
  • Publication number: 20190061355
    Abstract: A method of inhibiting evaporation of water from inkjet nozzles of a printhead. The method includes the steps of: providing a wiping material infused with a liquid composition comprising an evaporation inhibitor; and wiping the wiping material over a nozzle plate of the printhead. The evaporation inhibitor is transferred to the nozzle plate during wiping and thereby inhibits evaporation of water from the inkjet nozzles.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Inventors: Simon Fielder, David Tyvoll, Jingyi Zhou
  • Patent number: 9546292
    Abstract: An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary ?-carbon atoms.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: January 17, 2017
    Assignee: Memjet Technology Limited
    Inventors: David Tyvoll, Simon Fielder, Michele Gimona, Christopher Barton, Jognandan Prashar, Michele Shepard, Iain Blake, Richard Myors, Luke Grassy
  • Publication number: 20160137861
    Abstract: An inkjet ink for improving printhead lifetimes includes: an aqueous-based ink vehicle; a colorant; an anti-kogation additive; and an anti-corrosion additive having at least one acetylenic group, the acetylenic group being absent any tertiary or quaternary ?-carbon atoms.
    Type: Application
    Filed: October 7, 2015
    Publication date: May 19, 2016
    Inventors: David Tyvoll, Simon Fielder, Michele Gimona, Christopher Barton, Jognandan Prashar, Michele Shepard, Iain Blake, Richard Myors, Luke Grassy
  • Patent number: 9221261
    Abstract: A printer includes: an inkjet printhead assembly; a sled slidably arranged with respect to the printhead assembly, the sled supporting a platen module, a capper module and a wiper module; a sliding mechanism for sliding the sled relative to printhead assembly so as to selectively align one of the platen, capper and wiper modules with the printhead assembly; and a lift mechanism for lifting an aligned module linearly away from the sled and towards the printhead assembly. The platen module is positioned between the capper and wiper modules on the sled, such that the capper and wiper modules are positioned at opposite sides of the printhead assembly during printing.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: December 29, 2015
    Assignee: Memjet Technology Ltd.
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Publication number: 20150314603
    Abstract: A printer includes: an inkjet printhead assembly; a sled slidably arranged with respect to the printhead assembly, the sled supporting a platen module, a capper module and a wiper module; a sliding mechanism for sliding the sled relative to printhead assembly so as to selectively align one of the platen, capper and wiper modules with the printhead assembly; and a lift mechanism for lifting an aligned module linearly away from the sled and towards the printhead assembly. The platen module is positioned between the capper and wiper modules on the sled, such that the capper and wiper modules are positioned at opposite sides of the printhead assembly during printing.
    Type: Application
    Filed: July 15, 2015
    Publication date: November 5, 2015
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Patent number: 9150034
    Abstract: A printing assistance apparatus for a media width printhead, the apparatus having: an elongate platen having a surface for supporting media across the media width during printing on the media by fluid ejection nozzles of the printhead; and a wick element positioned within the platen for wicking fluid ejected by the nozzles from the supporting surface, the wick element having an elongate body positioned within the platen and a plurality of pads projecting from the body along the longitudinal length body toward the printhead, the pads being separated by notches.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: October 6, 2015
    Assignee: Memjet Technology Ltd.
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Patent number: 9038502
    Abstract: A restraining system is configured to secure and release a rider's footwear to a vehicle footrest in response to inputs to a control interface. The vehicle is typically a motorcycle or bicycle. In the case of a motorcycle, a rider's boot is restrained to a motorcycle foot peg by the action of a restraining device. Exemplary restraining device embodiments include an electromagnet or a mechanical latch. The control interface may be located on the motorcycle handlebar or on the rider's helmet. The rider can provide the inputs directly to the control interface. Alternatively, the inputs may be received from a wireless source.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: May 26, 2015
    Assignee: Evolution Racing Products, LLC
    Inventors: Steven Zoumaras, John Emerson, Gustaf Belt, Daniel S. Kline, Adam Livingston, David Tyvoll
  • Patent number: 8833919
    Abstract: Method of shaping media for printing by a media width printhead, the method having transporting media into a print zone defined by a plurality of fluid ejection nozzles of the printhead with input rollers at an angle to a plane parallel with the print zone; transporting media out of the print zone with output rollers at an angle to said parallel plane; and supporting and shaping the media as the media is transported through the print zone with an elongate platen, the platen having a series of upstream ribs disposed upstream of the print zone with respect to the media transport direction and a series of downstream ribs disposed downstream of the print zone with respect to the media transport direction, wherein the ribs are configured so that the transported media is in contact with the ribs in the print zone and adopts a constrained curved path past the nozzles.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 16, 2014
    Assignee: Memjet Technology Ltd.
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Publication number: 20140218453
    Abstract: A system for guiding media past a media width printhead. The system includes: a media width printhead having printhead ICs defining respective print zones; input and output rollers; and an elongate platen for guiding the media as the media is transported through the print zone. The platen has a series of upstream ribs and downstream ribs configured for contacting the media and guiding the media through the print zone. The platen has an aperture such that each printhead IC of the printhead is positioned opposite the aperture, and the print media is suspended between the upstream and downstream ribs across an entire width of the print zone of each printhead IC.
    Type: Application
    Filed: April 4, 2014
    Publication date: August 7, 2014
    Applicant: Zamtec Limited
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Patent number: 8764141
    Abstract: A system for shaping media for printing by a media width printhead is provided having a media width printhead of fluid ejection nozzles defining a media width print zone, input rollers disposed for transporting media into the print zone at an angle to a plane parallel with the print zone, output rollers for transporting media out of the print zone at an angle to a plane parallel with the print zone, and an elongate platen for supporting and shaping the media as the media is transported through the print zone. The platen has a series of ribs disposed upstream of the print zone and a series of ribs disposed downstream of the print zone. The ribs are configured so that the transported media adopts a constrained curved path past the nozzles through contact with the ribs in the print zone.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 1, 2014
    Assignee: Zamtec Ltd
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Patent number: 8727484
    Abstract: A maintenance apparatus for a printhead, the apparatus having a first porous member for contacting the printhead to absorb fluid from the printhead; and a second porous member for contacting the first porous member to absorb fluid from the first porous member.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: May 20, 2014
    Assignee: Zamtec Ltd
    Inventors: John Christian Love, Biagio Agostinelli, Antoni Murcia, David Tyvoll, Jeffrey Johnson, Jeffrey D. Lueschen, Antonio Joao Ubach
  • Patent number: 8641167
    Abstract: A maintenance apparatus for a printhead, the apparatus having a rotatable shaft; a porous material about the shaft; and a mechanism for rotating the shaft so that the porous material rotates against the printhead, the porous material being configured to absorb fluid from the printhead during the rotation.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: February 4, 2014
    Assignee: Zamtec Ltd
    Inventors: John Christian Love, Biagio Agostinelli, Antoni Murcia, David Tyvoll, Jeffrey Johnson, Jeffrey D. Lueschen, Antonio Joao Ubach
  • Patent number: 8540340
    Abstract: A printer having a media width printhead a sled slidably arranged with respect to the printhead a media platen module supported by the sled a capper module supported by the sled a wiper module supported by the sled and a selection mechanism for selectively sliding the sled to align one of the platen, capper and wiper modules with the printhead, and for moving the aligned module to a position in proximity of the printhead.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 24, 2013
    Assignee: Zamtec Ltd
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll, Paul Daniel Faucher, Jeffrey Johnson, Jeffrey D. Lueschen, David Petersen, Antonio Joao Ubach
  • Patent number: 8523316
    Abstract: A maintenance system for a printhead, the system having a sled slidably arranged with respect to the printhead a media platen module supported by the sled a capper module supported by the sled a wiper module supported by the sled; and a selection mechanism for selectively sliding the sled to align one of the platen, capper and wiper modules with the printhead, and for moving the aligned module to a position in proximity of the printhead.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 3, 2013
    Assignee: Zamtec Ltd
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll, Paul Daniel Faucher, Jeffrey Johnson, Jeffrey D. Lueschen, David Petersen, Antonio Joao Ubach
  • Patent number: 8481323
    Abstract: The present invention is drawn to a method of measuring glycated hemoglobin, which can comprise steps of establishing multiple age-specific groups of red blood cells, and measuring HbA1c levels of at least one of said groups. In another embodiment, a system for measuring glycated hemoglobin can comprise a separating device configured to separate red blood cells into multiple age-specific groups, and a measuring device configured to measure HbA1c levels of at least one of said groups.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: July 9, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David A. Tyvoll, Bryan J. Johnson, Kevin F. Peters
  • Publication number: 20110279618
    Abstract: A system for shaping media for printing by a media width printhead is provided having a media width printhead of fluid ejection nozzles defining a media width print zone, input rollers disposed for transporting media into the print zone at an angle to a plane parallel with the print zone, output rollers for transporting media out of the print zone at an angle to a plane parallel with the print zone, and an elongate platen for supporting and shaping the media as the media is transported through the print zone. The platen has a series of ribs disposed upstream of the print zone and a series of ribs disposed downstream of the print zone. The ribs are configured so that the transported media adopts a constrained curved path past the nozzles through contact with the ribs in the print zone.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 17, 2011
    Inventors: John Christian Love, Biagio Agostinelli, Javier Escobedo, Antoni Murcia, David Tyvoll
  • Publication number: 20110279526
    Abstract: A maintenance apparatus for a printhead, the apparatus having a rotatable shaft; a porous material about the shaft; and a mechanism for rotating the shaft so that the porous material rotates against the printhead, the porous material being configured to absorb fluid from the printhead during the rotation.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 17, 2011
    Inventors: John Christian Love, Biagio Agostinelli, Antoni Murcia, David Tyvoll, Jeffrey Johnson, Jeffrey D. Lueschen, Antonio Joao Ubach
  • Publication number: 20110279523
    Abstract: A maintenance apparatus for a printhead, the apparatus having a seal for sealing against a surface of the printhead which has fluid ejection nozzles, the seal being configured to form a sealed space about the nozzles; and a porous material positioned within the seal to be in proximity of the nozzles in the sealed space, fluid egested by the nozzles contacting, and being transferred to, the porous material in the sealed space.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 17, 2011
    Inventors: John Christian Love, Biagio Agostinelli, Antonio Murcia, David Tyvoll, Paul Daniel Faucher