Patents by Inventor Marcelle Louisa Gannon
Marcelle Louisa Gannon 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).
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Patent number: 7891748Abstract: Provided is a print engine controller for an inkjet printhead with a plurality of nozzle arrangements operatively actuated by thermal actuators. The controller has controller circuitry with an open actuator test circuit to test each respective actuator. The controller circuitry includes an open actuator test input, a column enable input and a row enable input, as well as a drive transistor operatively linking said thermal actuator to a power supply. The circuitry also includes a bleed transistor arranged in parallel with the thermal actuator, and 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 controller circuitry is configured so that when only the column enable and row enable inputs are activated the bleed and sense transistors are deactivated and the drive transistor is activated to link the thermal actuator to the power supply.Type: GrantFiled: July 29, 2008Date of Patent: February 22, 2011Assignee: Silverbrook Research Pty LtdInventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Patent number: 7874631Abstract: Provided is a printhead integrated circuit for an inkjet printer that has a nozzle and a corresponding actuator for ejecting ink through the nozzle. The Printhea IC also has drive circuitry for controlling the operation of the actuator. The drive circuitry has an open actuator test circuit comprising an open actuator test input, a column enable input and a row enable input, a drive transistor operatively linking said actuator to a power supply, a bleed transistor arranged in parallel with the actuator, a sense transistor operatively linking an output of the drive transistor and inputs of the actuator and bleed transistor to a sensing node. Actuating the actuator to eject ink by enabling the column and row enable inputs, deactivates the bleed transistor and activates the drive transistor to link the actuator to the power supply.Type: GrantFiled: November 3, 2009Date of Patent: January 25, 2011Assignee: Silverbrook Research Pty LtdInventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Patent number: 7819494Abstract: A printhead IC comprising: an array of nozzles; drive circuitry for receiving print data and fire commands from a print engine controller; wherein during use, the drive circuitry receives the print data for the array in a plurality of sequential portions with a fire command at the end of each portion.Type: GrantFiled: October 10, 2006Date of Patent: October 26, 2010Assignee: Silverbrook Research Pty LtdInventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Publication number: 20100053255Abstract: Provided is a printhead integrated circuit for an inkjet printer that has a nozzle and a corresponding actuator for ejecting ink through the nozzle. The Printhea IC also has drive circuitry for controlling the operation of the actuator. The drive circuitry has an open actuator test circuit comprising an open actuator test input, a column enable input and a row enable input, a drive transistor operatively linking said actuator to a power supply, a bleed transistor arranged in parallel with the actuator, a sense transistor operatively linking an output of the drive transistor and inputs of the actuator and bleed transistor to a sensing node. Actuating the actuator to eject ink by enabling the column and row enable inputs, deactivates the bleed transistor and activates the drive transistor to link the actuator to the power supply.Type: ApplicationFiled: November 3, 2009Publication date: March 4, 2010Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Patent number: 7618109Abstract: 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: GrantFiled: July 29, 2008Date of Patent: November 17, 2009Assignee: Silverbrook Research Pty LtdInventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Publication number: 20080278545Abstract: 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: ApplicationFiled: July 29, 2008Publication date: November 13, 2008Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Publication number: 20080278529Abstract: Provided is a print engine controller for an inkjet printhead with a plurality of nozzle arrangements operatively actuated by thermal actuators. The controller has controller circuitry with an open actuator test circuit to test each respective actuator. The controller circuitry includes an open actuator test input, a column enable input and a row enable input, as well as a drive transistor operatively linking said thermal actuator to a power supply. The circuitry also includes a bleed transistor arranged in parallel with the thermal actuator, and 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 controller circuitry is configured so that when only the column enable and row enable inputs are activated the bleed and sense transistors are deactivated and the drive transistor is activated to link the thermal actuator to the power supply.Type: ApplicationFiled: July 29, 2008Publication date: November 13, 2008Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook
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Patent number: 7425047Abstract: A printhead IC for an inkjet printer, the inkjet printer having a PEC for sending print data to the printhead IC in accordance with a predetermined data transmission protocol, the printhead IC comprising: an array of nozzles for ejecting drops of printing fluid onto a media substrate; and, drive circuitry for driving the array of nozzles; wherein, the circuitry is configured to receive print data in any one of a plurality of different data transmission protocols.Type: GrantFiled: October 10, 2006Date of Patent: September 16, 2008Assignee: Silverbrook Research Pty LtdInventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Richard Thomas Plunkett, Kia Silverbrook
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Publication number: 20080094451Abstract: A printhead IC for an inkjet printer, the inkjet printer having a PEC for sending print data to the printhead IC in accordance with a predetermined data transmission protocol, the printhead IC comprising: an array of nozzles for ejecting drops of printing fluid onto a media substrate; and, drive circuitry for driving the array of nozzles; wherein, the circuitry is configured to receive print data in any one of a plurality of different data transmission protocols.Type: ApplicationFiled: October 10, 2006Publication date: April 24, 2008Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Richard Thomas Plunkett, Kia Silverbrook
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Publication number: 20080084438Abstract: A printhead IC comprising: an array of nozzles; drive circuitry for receiving print data and fire commands from a print engine controller; wherein during use, the drive circuitry receives the print data for the array in a plurality of sequential portions with a fire command at the end of each portion.Type: ApplicationFiled: October 10, 2006Publication date: April 10, 2008Inventors: John Robert Sheahan, Mark Jackson Pulver, Brian Christopher Morahan, Alireza Moini, Timothy Peter Gillespie, Michael John Webb, Marcelle Louisa Gannon, Kia Silverbrook