Patents by Inventor James P Axtell
James P Axtell 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: 8960860Abstract: A printhead die is provided that includes a substrate and a slot extending through the substrate, the slot including a first slot segment and a discrete second slot segment, the second slot segment being offset from the first slot segment along a major axis and along an orthogonal minor axis.Type: GrantFiled: May 31, 2011Date of Patent: February 24, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Joseph M. Torgerson, Trudy Benjamin
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Publication number: 20140043396Abstract: A printhead die is provided that includes a substrate and a slot extending through the substrate, the slot including a first slot segment and a discrete second slot segment, the second slot segment being offset from the first slot segment along a major axis and along an orthogonal minor axis.Type: ApplicationFiled: May 31, 2011Publication date: February 13, 2014Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: James P. Axtell, Joseph M. Torgerson, Trudy Benjamin
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Patent number: 8172368Abstract: A fluid ejection device includes a plurality of firing cells and a fire line adapted to conduct an energy signal including energy pulses. Each firing cell in the plurality of firing cells includes a firing resistor, a drive switch, a first data switch, and a second data switch. The drive switch is configured to enable the firing resistor to respond to the energy signal. The first data switch is configured to receive data signals that represent an image and to latch the data signals to provide latched data signals. The second data switch is configured to receive the latched data signals and control the drive switch to enable the firing resistor to respond to the energy signal and heat fluid to be ejected based on the latched data signals.Type: GrantFiled: August 28, 2009Date of Patent: May 8, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy Benjamin, James P. Axtell
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Patent number: 8002371Abstract: A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device may further be validated.Type: GrantFiled: July 12, 2009Date of Patent: August 23, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Blair M. Kent, James P. Axtell, Trudy Benjamin, David Lowe, Preston Seu
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Patent number: 7935317Abstract: A fluid-ejection device includes a handheld and/or mountable enclosure, a pneumatic fitting, an electrical connector, and a controller. The pneumatic fitting extends from and/or through the enclosure and is receptive to placement of a tip thereon. The tip contains a supply of fluid, a fluid-ejection mechanism, and an electrical connector for the fluid-ejection mechanism. The electrical connector extends from and/or through the enclosure and is receptive to electrical coupling of the electrical connector of the tip. The controller is situated within the enclosure to cause the tip to eject the fluid via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device.Type: GrantFiled: September 14, 2006Date of Patent: May 3, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Blair M. Kent, Jeffrey A. Nielsen, Manish Giri, Trudy Benjamin, David Lowe, Ronald R. Anderson, Preston Seu
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Patent number: 7794057Abstract: A fluid ejection device having firing cells, signal lines configured to receive a series of pulses, and an address generator configured to receive pulses from the series of pulses and generate a set of address signals in response to the received pulses, wherein the set of address signals is adapted to enable the firing cells for activation.Type: GrantFiled: April 25, 2008Date of Patent: September 14, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy L. Benjamin, James P Axtell
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Patent number: 7722144Abstract: A fluid ejection device includes a first fire line adapted to conduct a first energy signal having energy pulses, a second fire line adapted to conduct a second energy signal having energy pulses, a first address generator configured to provide first address signals, a second address generator configured to provide second address signals, first drop generators and second drop generators. The first drop generators are electrically coupled to the first fire line and configured to respond to the first energy signal to eject fluid based on the first address signals. The second drop generators are electrically coupled to the second fire line and configured to respond to the second energy signal to eject fluid based on the second address signals.Type: GrantFiled: April 19, 2004Date of Patent: May 25, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy L. Benjamin, James P Axtell, Joseph M Torgerson, Michael D. Miller
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Patent number: 7659589Abstract: A device includes a substrate, a first gate, a second gate, and a third gate. The substrate has a first active region and a second active region. The first gate is configured in a first loop structure around the first active region. The second gate is configured in a second loop structure around the second active region, and the third gate is configured in a third loop structure around the first gate and the second gate.Type: GrantFiled: August 17, 2007Date of Patent: February 9, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy L. Benjamin, James P Axtell, Joseph M Torgerson
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Patent number: 7648227Abstract: A fluid ejection device includes a first fire line, a second fire line, data lines, latch circuitry, first drop generators, and second drop generators. The first fire line is adapted to conduct a first energy signal including first energy pulses and the second fire line is adapted to conduct a second energy signal including second energy pulses. The data lines are adapted to conduct data signals that represent an image and the latch circuitry is configured to latch the data signals to provide latched data signals based on at least one clock signal. The first drop generators are configured to respond to the first energy signal to eject fluid based on the latched data signals and the second drop generators are configured to respond to the second energy signal to eject fluid based on the latched data signals.Type: GrantFiled: October 31, 2005Date of Patent: January 19, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy Benjamin, James P. Axtell
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Publication number: 20090315931Abstract: A fluid ejection device includes a plurality of firing cells and a fire line adapted to conduct an energy signal including energy pulses. Each firing cell in the plurality of firing cells includes a firing resistor, a drive switch, a first data switch, and a second data switch. The drive switch is configured to enable the firing resistor to respond to the energy signal. The first data switch is configured to receive data signals that represent an image and to latch the data signals to provide latched data signals. The second data switch is configured to receive the latched data signals and control the drive switch to enable the firing resistor to respond to the energy signal and heat fluid to be ejected based on the latched data signals.Type: ApplicationFiled: August 28, 2009Publication date: December 24, 2009Inventors: Trudy Benjamin, James P. Axtell
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Publication number: 20090295848Abstract: A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device may further be validated.Type: ApplicationFiled: July 12, 2009Publication date: December 3, 2009Inventors: Blair Kent, James P. Axtell, Trudy Benjamin, David J. Lowe, Preston D. Seu
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Patent number: 7578591Abstract: A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device my further be validated.Type: GrantFiled: September 14, 2006Date of Patent: August 25, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Blair M. Kent, James P. Axtell, Trudy Benjamin, David Lowe, Preston Seu
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Publication number: 20080204493Abstract: A fluid ejection device having firing cells, signal lines configured to receive a series of pulses, and an address generator configured to receive pulses from the series of pulses and generate a set of address signals in response to the received pulses, wherein the set of address signals is adapted to enable the firing cells for activation.Type: ApplicationFiled: April 25, 2008Publication date: August 28, 2008Inventors: Trudy L. Benjamin, James P. Axtell
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Patent number: 7384113Abstract: A fluid ejection device having firing cells, signal lines configured to receive a series of pulses, and an address generator configured to receive pulses from the series of pulses and generate a set of address signals in response to the received pulses,. wherein the set of address signals is adapted to enable the firing cells for activation.Type: GrantFiled: April 19, 2004Date of Patent: June 10, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy L. Benjamin, James P Axtell
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Publication number: 20080068434Abstract: A fluid-ejection device includes a handheld and/or mountable enclosure, a pneumatic fitting, an electrical connector, and a controller. The pneumatic fitting extends from and/or through the enclosure and is receptive to placement of a tip thereon. The tip contains a supply of fluid, a fluid-ejection mechanism, and an electrical connector for the fluid-ejection mechanism. The electrical connector extends from and/or through the enclosure and is receptive to electrical coupling of the electrical connector of the tip. The controller is situated within the enclosure to cause the tip to eject the fluid via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Inventors: James P. Axtell, Blair M. Kent, Jeffrey A. Nielsen, Manish Giri, Trudy Benjamin, David Lowe, Ronald R. Anderson, Preston Seu
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Publication number: 20080068435Abstract: A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device my further be validated.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Inventors: Blair M. Kent, James P. Axtell, Trudy Benjamin, David Lowe, Preston Seu
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Patent number: 7278715Abstract: A fluid ejection device comprising a first transistor having a first gate configured in a first loop structure, a second transistor having a second gate configured in a second loop structure, and a third transistor having a third gate configured in a third loop structure disposed around the first transistor. The second transistor and the third transistor share a first active region.Type: GrantFiled: April 19, 2004Date of Patent: October 9, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Trudy L. Benjamin, James P Axtell, Joseph M Torgerson
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Patent number: 7090338Abstract: Devices, methodologies, and other embodiments associated with fluid ejection devices are described. One exemplary embodiment includes a fluid ejection device that comprises a plurality of firing cells configured to eject fluid when activated. The firing cells can be grouped into firing groups of firing cells including a first fire group and a second fire group. A circuit can be provided that is configured to activate selected firing cells where the circuit is configured to respond to activation signals including a first fire pulse to activate the firing cells of the first fire group and a second fire pulse to activate the firing cells of the second fire group. The circuit can also be configured to activate the first fire group and the second fire group to eject fluid overlapping in time.Type: GrantFiled: July 15, 2005Date of Patent: August 15, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Trudy L. Benjamin
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Patent number: 7036914Abstract: A dynamic memory based integrated circuit ink jet firing cell that includes a heater resistor, a drive transistor, and a dynamic memory circuit for storing firing data only for such heater resistor. Also disclosed is an integrated circuit firing array that includes a plurality of dynamic memory based firing cells divided into a plurality of fire groups of firing cells, each fire group having a plurality of subgroups; data lines for providing energizing data to the firing cells; control lines for providing control information to the firing cells wherein all firing cells within a subgroup are connected to a common subset of the control lines so as to be controlled to concurrently store energizing data; and a plurality fire lines for supplying energizing energy to the firing cells, wherein all firing cells of a fire group receive energizing energy from only one fire line.Type: GrantFiled: March 4, 2003Date of Patent: May 2, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Trudy L. Benjamin
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Patent number: 6932460Abstract: A dynamic memory based integrated circuit ink jet firing cell that includes a heater resistor, a drive transistor, and a dynamic memory circuit for storing firing data only for such heater resistor. Also disclosed is an integrated circuit firing array that includes a plurality of dynamic memory based firing cells divided into a plurality of fire groups of firing cells, each fire group having a plurality of subgroups; data lines for providing energizing data to the firing cells; control lines for providing control information to the firing cells wherein all firing cells within a subgroup are connected to a common subset of the control lines so as to be controlled to concurrently store energizing data; and a plurality fire lines for supplying energizing energy to the firing cells, wherein all firing cells of a fire group receive energizing energy from only one fire line.Type: GrantFiled: May 11, 2004Date of Patent: August 23, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Axtell, Trudy L. Benjamin