Patents by Inventor Mark A. Jackson

Mark A. Jackson 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).

  • Inkjet printhead with temperature zones
    Patent number: 7669955
    Abstract: A printhead IC is provided having 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 programmed with a series of temperature thresholds defining a set of temperature zones, each of the zones having a different pulse profile for the drive pulses sent to the nozzles in the region currently operating in that temperature zone.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: March 2, 2010
    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
  • Temperature regulated inkjet printhead
    Patent number: 7669956
    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 sets the duration of the pulse profile to a sub ejection value for any of the nozzles in the row that are not to eject a drop during that firing sequence.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: March 2, 2010
    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
  • Print Engine For Rotated Ejection Nozzle Correction
    Publication number: 20100045717
    Abstract: A print engine is provided having printhead modules and a controller. Each printhead module has 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 4, 2009
    Publication date: February 25, 2010
    Inventors: Kia Silverbrook, Mark Jackson Pulver, John Robert Sheahan, Simon Robert Walmsley, Michael John Webb
  • Inkjet printhead integrated circuit
    Patent number: 7658459
    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, a temperature sensor connected to the drive circuitry to adjust the drive pulse profile in response to the temperature sensor output and open actuator test circuitry for selectively disabling the actuators when they receive a drive signal while comparing the resistance of the resistive heater to a predetermined threshold to assess whether the actuator is defective. During use, the temperature sensor can be de-activated after a period of use.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 9, 2010
    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 IC WITH TEMPERATURE BASED DE-CLOG EJECTION
    Publication number: 20100020120
    Abstract: A printhead IC is provided having an ejection nozzle, drive circuitry for generating drive signals for driving the ejection nozzle, and a temperature sensor connected to the drive circuitry. The drive circuitry adjusts the drive signals in response to output of the temperature sensor so as to generate the drive signals as print signals and de-clog signals. The de-clog signals have a longer duration than the print signals.
    Type: Application
    Filed: September 13, 2009
    Publication date: January 28, 2010
    Inventors: John Robert Sheahan, Mark Jackson Pulver, Brain Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Kia Silverbrook
  • Printhead IC With Non-Ejection Maintenance
    Publication number: 20100002035
    Abstract: A printhead IC is provided having an ejection nozzle having a heater for heating printing fluid, and drive circuitry for generating print pulses and maintenance pulses for driving the heater of the ejection nozzle. The maintenance pulses have a series of sub-ejection pulses preceding a de-clog pulse. The print signals are generated to heat the heater to form a first vapor bubble in printing fluid that causes ejection of the printing fluid from the nozzle. The de-clog pulse is generated to have lower power and longer duration than the print pulses so as to heat the heaters to form a second vapor bubble in the printing fluid which does not cause ejection. The sub-ejection pulses are generated to have lower power than the print pulses and shorter duration than the de-clog pulse so as to heat the heater without sufficient energy to nucleate a vapor bubble in the printing fluid.
    Type: Application
    Filed: September 15, 2009
    Publication date: January 7, 2010
    Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Angus John North, Kia Silverbrook
  • ANTIGEN BINDING PROTEINS TO PROPROTEIN CONVERTASE SUBTILISIN KEXIN TYPE 9 (PCSK9)
    Publication number: 20090326202
    Abstract: Antigen binding proteins that interact with Proprotein Convertase Subtilisin Kexin Type 9 (PCSK9) are described. Methods of treating hypercholesterolemia and other disorders by administering a pharmaceutically effective amount of an antigen binding protein to PCSK9 are described. Methods of detecting the amount of PCSK9 in a sample using an antigen binding protein to PCSK9 are described.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 31, 2009
    Inventors: Simon Mark Jackson, Bei Shan, Wenyan Shen, Joyce Chi Yee Chan, Chadwick Terence King
  • 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
  • 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
  • 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
  • Compositions of Keratin Hydrolysate and Microbes for Pest Control Applications
    Publication number: 20090269308
    Abstract: The combination of keratin hydrolysate with viable cells or infectious propagules of a fungal biological control agent such as Paecilomyces species, Metarhizium species, Beauveria species, and/or Verticillium species, provides effective control of soil-dwelling or subterranean insects, including termites, and particularly those belonging to the family Rhinotermitidae, such as the Formosan subterranean termite and native North American subterranean termites. In use, a foam-forming composition comprising the keratin hydrolysate and an insecticidally effective amount of the fungus are applied to the insects, the locus of the insects, to material susceptible to infestation by said insects, or to the locus of material susceptible to infestation by said insects.
    Type: Application
    Filed: July 2, 2009
    Publication date: October 29, 2009
    Inventors: Christopher A. Dunlap, Mark A. Jackson, Maureen S. Wright
  • 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
  • Conveyor and method for changing the pitch of printed products
    Publication number: 20090217833
    Abstract: A printing press is provided. The printing press includes a print unit printing a stream of printed products, the printed products having a first pitch. The printing press also includes a pitch changing device. The pitch changing device includes an upper roller mounted on an upper axle, a lower roller mounted on a lower axle, the upper and lower rollers forming a roller nip, and a motor driving the upper and lower rollers in opposite directions. The nip receives the stream of printed products. The motor varies the velocity of the nip and the printed products using an electronic cam velocity profile so as to alter the first pitch. A method is also provided.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: Goss International Americas, Inc.
    Inventors: Joseph Adrian St. Ours, Lothar John Schroeder, Barry Mark Jackson, Dieter Theodor Ebert
  • 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