Patents by Inventor Mark Jackson Pulver

Mark Jackson Pulver 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).

  • Printer Having Nozzle Displacement Correction
    Publication number: 20090295855
    Abstract: A printer is provided having a carrier, a printhead having a plurality of nozzles, at least one of the nozzles being rotationally displaced relative to the carrier, and a controller for determining and communicating print data to the nozzles. The controller is configured to determine the rotational displacement, determine a correction factor for compensating for a printing error caused by the determined rotational displacement, and alter the print data based on the correction factor to at least partially compensate for the rotational displacement. The correction factor is at least partially based on a thickness of media being printed on.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 3, 2009
    Inventors: Simon Robert Walmsley, John Robert Sheahan, Michael John Webb, Mark Jackson Pulver
  • Method of operating a thermal bend actuator
    Patent number: 7618109
    Abstract: Provided is a method of operating a thermal bend actuator of a printhead nozzle arrangement of a printhead using an open actuator test circuit. The test circuit includes an open actuator test input, a column enable input and a row enable input; a drive transistor operatively linking said thermal actuator to a power supply; a bleed transistor arranged in parallel with the thermal actuator; a sense transistor operatively linking an output of the drive transistor and inputs of the thermal actuator and bleed transistor to a sensing node. The method includes the step of actuating the actuator to facilitate printing by enabling the column and row enable inputs to deactivate the bleed and sense transistors and to activate the drive transistor to link the thermal actuator to the power supply.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: November 17, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
  • Printer with rotated ejection nozzle correction
    Patent number: 7618107
    Abstract: A printer is provided having a printhead and controller. The printhead has a plurality of printhead modules each having a plurality of ejection nozzles. The nozzles of at least one of the printhead modules is rotationally displaced relative to the other printhead modules. The controller communicates ejection data to the ejection nozzles in accordance with a cumulative correction factor for each printhead module, including printhead modules having non-rotationally displaced nozzles, to at least partially compensate for the rotational displacement.
    Type: Grant
    Filed: November 23, 2008
    Date of Patent: November 17, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Kia Silverbrook, Mark Jackson Pulver, John Robert Sheahan, Simon Robert Walmsley, Michael John Webb
  • Printer controller for supplying dot data to at least one printhead module having faulty nozzle
    Patent number: 7607757
    Abstract: A printer controller for supplying dot data to at least one printhead module, the at least one printhead module comprising a plurality of rows, each of the rows comprising a plurality of nozzles for ejecting ink, wherein the printhead module includes at least first and second rows configured to print ink of a similar type or color, the printer controller being configured to supply the dot data to the at least one printhead module such that, in the event a nozzle in the first row is faulty, a corresponding nozzle in the second row prints an ink dot at a position on print media at or adjacent a position where the faulty nozzle would otherwise have printed it.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: October 27, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Kia Silverbrook, Simon Robert Walmsley, Richard Thomas Plunkett, Mark Jackson Pulver, John Robert Sheahan, Michael John Webb
  • Thermal inkjet printhead with de-clog firing mode
    Patent number: 7604321
    Abstract: A printhead IC comprising: an array of nozzles, each with a corresponding heater to form a vapor bubble in printing fluid that causes a drop of the printing fluid to eject through the nozzle; and, drive circuitry for generating drive pulses that energize the heaters, the drive circuitry being configured to operate in two modes, a printing mode in which the drive pulses it generates are printing pulses, and a maintenance mode in which the drive pulses are de-clog pulses; wherein, the de-clog pulse has lower power and a longer duration than the printing pulse.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: October 20, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Angus John North, Kia Silverbrook
  • Printer controller for controlling a printhead module based on thermal sensing
    Patent number: 7600843
    Abstract: A printer controller for supplying dot data to a printhead module having a plurality of nozzles for expelling ink, the printhead module including a plurality of thermal sensors, each of the thermal sensors being configured to respond to a temperature at or adjacent at least one of the nozzles, the printer controller being configured to modify operation of at least some of the nozzles in response to the temperature rising above a first threshold.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: October 13, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Kia Silverbrook, Simon Robert Walmsley, Michael John Webb, Mark Jackson Pulver, Richard Thomas Plunkett, John Robert Sheahan
  • Printhead Controller For Controlling Printhead On Basis Of Thermal Sensors
    Publication number: 20090244162
    Abstract: A printhead controller is provided for supplying dot data to a printhead module having a plurality of nozzles for expelling ink. The printhead module includes a plurality of thermal sensors. Each of the thermal sensors is configured to respond to a temperature at or adjacent at least one of the nozzles. The printhead controller is configured to modify operation of at least some of the nozzles in response to the temperature rising above a first threshold. The printhead module is a thermal inkjet printhead module and each of the nozzles includes a thermal ink ejection mechanism. Each thermal sensor comprises at least part of one of the thermal inkjet mechanisms.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 1, 2009
    Inventors: Kia Silverbrook, Simon Robert Walmsley, Michael John Webb, Mark Jackson Pulver, John Robert Sheahan
  • Printhead IC with de-activatable temperature sensor and maintenance mode
    Patent number: 7591523
    Abstract: A printhead IC is provided which has an array of nozzles, drive circuitry for receiving print data and sending drive pulses of electrical energy to the array of nozzles in accordance with the print data, and a temperature sensor connected to the drive circuitry to adjust the drive pulse profile in response to the temperature sensor output. During use, the temperature sensor can be de-activated after a period of use. The drive circuitry is configured to operate in two modes, a printing mode in which the drive pulses it generates are printing pulses, and a maintenance mode in which the drive pulses are de-clog pulses, such that, the de-clog pulse has a longer duration than the printing pulse.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: September 22, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Kia Silverbrook
  • PRINTHEAD HAVING SEQUENCED NOZZLE FIRING ON INTEGRATED CIRCUIT
    Publication number: 20090213155
    Abstract: A printhead is provided having an integrated circuit having at least one row comprising a plurality of sets of n adjacent nozzles, each of the nozzles being configured to expel ink in response to fire signals, and a controller for supplying the fire signals to the integrated circuit such that (a) a fire signal is provided to nozzles at a first and nth position in each set of nozzles, then (b) a fire signal is provided to the next inward pair of nozzles in each set, then in the event n is an even number, (b) is repeated until all of the nozzles in each set has been fired, or in the event n is an odd number, (b) is repeated until all of the nozzles but a central nozzle in each set have been fired, and then the central nozzle is fired.
    Type: Application
    Filed: May 7, 2009
    Publication date: August 27, 2009
    Inventors: Simon Robert Walmsley, Mark Jackson Pulver, John Robert Sheahan, Kia Silverbrook, Michael John Webb
  • PRINTHEAD CONTROLLER FOR NOZZLE FAULT CORRECTION
    Publication number: 20090213154
    Abstract: A printhead controller is provided for supplying print data to a printhead having first and second rows of inkjet nozzles configured to print ink of a similar color. The controller is configured to supply the print data to the printhead such that, in the event a nozzle in the first row is faulty, a corresponding nozzle in the second row prints at a position on print media at or adjacent a position where the faulty nozzle would otherwise have printed.
    Type: Application
    Filed: May 7, 2009
    Publication date: August 27, 2009
    Inventors: Kia Silverbrook, Simon Robert Walmsley, Mark Jackson Pulver, John Robert Sheahan, Michael John Webb
  • Printer Having Sequenced Printhead Nozzle Firing
    Publication number: 20090201327
    Abstract: A printer is provided having a printhead having a plurality of sets of n adjacent printing nozzles in at least one nozzle row, and a controller for supplying fire signals to said nozzles, such that, for each set of nozzles, a fire signal is provided by the controller in accordance with the sequence: nozzle position 1, nozzle position n, nozzle position 2, nozzle position (n?1), . . . , nozzle position x.
    Type: Application
    Filed: April 13, 2009
    Publication date: August 13, 2009
    Inventors: Mark Jackson Pulver, Simon Robert Walmsley, John Robert Sheahan, Michael John Webb, Kia Silverbrook
  • Inkjet printer having nozzle displacement correction
    Patent number: 7556331
    Abstract: An inkjet printer is provided which has a printhead module and printer controller. The printhead module has a plurality of inkjet nozzles, with at least one of the nozzles being rotationally displaced relative to a carrier of the printhead module. The printer controller determines and communicates ink dot data to the inkjet nozzles, and is configured to determine the rotational displacement, determine at least one correction factor that at least partially compensates for an error in ink dot displacement caused by the determined rotational displacement, and alter the output of the ink dots based on the correction factor to at least partially compensate for the rotational displacement. The correction factor is at least partially based on a thickness of media being printed on.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: July 7, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Simon Robert Walmsley, John Robert Sheahan, Michael John Webb, Mark Jackson Pulver
  • Printhead module having operation controllable on basis of thermal sensors
    Patent number: 7549718
    Abstract: A printhead module having a plurality of nozzles for expelling ink, the printhead module including a plurality of thermal sensors, each of the thermal sensors being configured to respond to a temperature at or adjacent at least one of the nozzles, the printhead module being configured to modify operation of the nozzles in response to the temperature rising above a first threshold.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: June 23, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Kia Silverbrook, Simon Robert Walmsley, Michael John Webb, Mark Jackson Pulver, Richard Thomas Plunkett, John Robert Sheahan
  • Printer controller for causing expulsion of ink from nozzles in groups, starting at outside nozzles of groups
    Patent number: 7549715
    Abstract: A printer controller for supplying one or more control signals to a printhead module, the printhead module including at least one row that comprises a plurality of sets of n adjacent nozzles, each of the nozzles being configured to expel ink in response to a fire signal, such that: (a) a fire signal is provided to nozzles at a first and nth position in each set of nozzles; (b) a fire signal is provided to the next inward pair of nozzles in each set; (c) in the event n is an even number, step (b) is repeated until all of the nozzles in each set has been fired; and (d) in the event n is an odd number, step (b) is repeated until all of the nozzles but a central nozzle in each set have been fired, and then the central nozzle is fired.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: June 23, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Simon Robert Walmsley, Mark Jackson Pulver, Richard Thomas Plunkett, John Robert Sheahan, Kia Silverbrook, Michael John Webb
  • INKJET PRINTER HAVING PRINTHEAD WITH MULTIPLE CONTROLLERS
    Publication number: 20090122091
    Abstract: An inkjet printer is provided having a printhead having inkjet nozzles and a plurality of controllers configured to process print data for printing and to output the processed data to the printhead. The plurality of controllers are connected to a common input of the printhead.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 14, 2009
    Inventors: Kia Silverbrook, Simon Robert Walmsley, John Robert Sheahan, Mark Jackson Pulver, Michael John Webb
  • Printhead having sequenced nozzle firing
    Patent number: 7524007
    Abstract: A printhead is provided having at least one row that comprises a plurality of sets of n adjacent printing nozzles. Each nozzle is configured to expel ink in response to a fire signal, such that, for each set of nozzles, a fire signal is provided in accordance with the sequence: [nozzle position 1, nozzle position n, nozzle position 2, nozzle position (n?1), . . . , nozzle position x].
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: April 28, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Mark Jackson Pulver, Simon Robert Walmsley, John Robert Sheahan, Michael John Webb, Richard Thomas Plunkett, Kia Silverbrook
  • Printer With Rotated Ejection Nozzle Correction
    Publication number: 20090096822
    Abstract: A printer is provided having a printhead and controller. The printhead has a plurality of printhead modules each having a plurality of ejection nozzles. The nozzles of at least one of the printhead modules is rotationally displaced relative to the other printhead modules. The controller communicates ejection data to the ejection nozzles in accordance with a cumulative correction factor for each printhead module, including printhead modules having non-rotationally displaced nozzles, to at least partially compensate for the rotational displacement.
    Type: Application
    Filed: November 23, 2008
    Publication date: April 16, 2009
    Inventors: Kia Silverbrook, Mark Jackson Pulver, John Robert Sheahan, Simon Robert Walmsley, Michael John Webb
  • Printhead module capable of printing a maximum of channels of print data
    Patent number: 7517036
    Abstract: A printhead module capable of printing a maximum of n of channels of print data, the printhead being configurable into: a first mode, in which the printhead is configured to receive print data for a first number of the channels; and a second mode, in which the printhead is configured to receive print data for a second number of the channels, wherein the first number is greater than the second number.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: April 14, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Simon Robert Walmsley, Michael John Webb, John Robert Sheahan, Mark Jackson Pulver, Kia Silverbrook, Richard Thomas Plunkett
  • PRINTER CONTROLLER FOR CORRECTION OF ROTATIONALLY DISPLACED PRINTHEAD
    Publication number: 20090085941
    Abstract: A printer controller is provided for supplying ejection data to a printhead mounted to a carrier and having a plurality of ejection nozzles. The printer controller is configured to determine a rotational displacement of the printhead relative to the carrier, determine a correction factor at least partially based on a thickness of media being printed on so as to at least partially compensate for the determined rotational displacement, and alter the supply of the ejection data based on the correction factor.
    Type: Application
    Filed: November 26, 2008
    Publication date: April 2, 2009
    Inventors: Simon Robert Walmsley, Mark Jackson Pulver, Michael John Webb, John Robert Sheahan
  • PRINTHEAD HAVING DISPLACED NOZZLE ROWS
    Publication number: 20090073225
    Abstract: A printhead is provided having a plurality of nozzle rows which have displaced row portions.
    Type: Application
    Filed: November 17, 2008
    Publication date: March 19, 2009
    Inventors: Mark Jackson Pulver, John Robert Sheahan, Simon Robert Walmsley, Kia Sliverbrook, Michael John Webb