Patents by Inventor Caitriona Forbes

Caitriona Forbes 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: 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: 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
  • Publication number: 20220072852
    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: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Inventors: Julie Catherine HOGAN, Ronan PALLISER, John SHEAHAN, Brian BROWN, Caitriona FORBES, Pat LEHANE
  • Publication number: 20220072854
    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: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Inventors: Julie Catherine HOGAN, Ronan PALLISER, John SHEAHAN, Brian BROWN, Caitriona FORBES, Pat LEHANE
  • Publication number: 20220072850
    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: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Inventors: Julie Catherine HOGAN, Ronan PALLISER, John SHEAHAN, Brian BROWN, Caitriona FORBES, Pat LEHANE
  • Patent number: 10029458
    Abstract: A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: July 24, 2018
    Assignee: Memjet Technology Ltd.
    Inventors: Julie Hogan, Angus North, Philip Palma, John Sheahan, Brian Brown, David Keeshan, Rodney Hardy, Peter Allworth, Colin Pickup, Caitriona Forbes, Kieran Roughan, William Jacob
  • Publication number: 20170120581
    Abstract: A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead.
    Type: Application
    Filed: December 9, 2016
    Publication date: May 4, 2017
    Inventors: Julie Hogan, Angus North, Philip Palma, John Sheahan, Brian Brown, David Keshan, Rodney Hardy, Peter Allworth, Colin Pickup, Caitriona Forbes, Kieran Roughan, William Jacob
  • Patent number: 9545787
    Abstract: A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 17, 2017
    Assignee: Memjet Technology Limited
    Inventors: Julie Hogan, Angus North, Philip Palma, John Sheahan, Brian Brown, David Keeshan, Rodney Hardy, Peter Allworth, Colin Pickup, Caitriona Forbes, Kieran Roughan, William Jacob
  • Publication number: 20150360465
    Abstract: A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead.
    Type: Application
    Filed: July 10, 2014
    Publication date: December 17, 2015
    Inventors: Julie Hogan, Angus North, Philip Palma, John Sheahan, Brian Brown, David Keeshan, Rodney Hardy, Peter Allworth, Colin Pickup, Caitriona Forbes, Kieran Roughan, William Jacob
  • Publication number: 20150029247
    Abstract: A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 29, 2015
    Inventors: Julie Hogan, Angus North, Philip Palma, John Sheahan, Brian Brown, David Keeshan, Rodney Hardy, Peter Allworth, Colin Pickup, Caitriona Forbes, Kieran Roughan, William Jacob