Patents by Inventor Jeffrey D. Langford
Jeffrey D. Langford 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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Publication number: 20230405998Abstract: Fluidic usage data over time is received from a printing device. A profile governing servicing maintenance of fluidic printhead nozzles of the printing device is determined based on the received fluidic usage data over time. The profile is transmitted to the printing device. The printing device performs spit-wipe-prime operations on the fluidic printhead nozzles according to the profile.Type: ApplicationFiled: November 20, 2020Publication date: December 21, 2023Inventors: JEFFREY D LANGFORD, DEAN H OUCHIDA, KRIS M ENGLISH
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Patent number: 8282203Abstract: One method of ink formulation may include providing a shipping material in a reservoir of a printing mechanism, placing a concentrated ink in communication with the reservoir, and mixing the shipping material and the concentrated ink together to create a print-ready ink.Type: GrantFiled: March 25, 2011Date of Patent: October 9, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: James M Brenner, Harold F Mantooth, Jeffrey D Langford
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Patent number: 8002395Abstract: An ink recirculation system includes a printhead adapted for printing an ink image on a media, a printhead reservoir fluidly connected to the printhead, a pump, a valve fluidly connected to the pump and the printhead reservoir, and an ink supply container including cleaning fluid therein. The ink supply container is fluidly connected to the pump.Type: GrantFiled: July 14, 2008Date of Patent: August 23, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Carrie E. Harris
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Patent number: 7997698Abstract: An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The on-axis printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the on-axis printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.Type: GrantFiled: October 30, 2008Date of Patent: August 16, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeremy A Davis, Melissa S. Gedraitis, Marc A. Baldwin, Louis Barinaga, Daniel D Dowell, Ashley E Childs, Mark A. Smith, Charles R. Steinmetz, Ralph L. Stathem, Jeffrey D. Langford, Michael L. Hilton
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Publication number: 20110168052Abstract: One method of ink formulation may include providing a shipping material in a reservoir of a printing mechanism, placing a concentrated ink in communication with the reservoir, and mixing the shipping material and the concentrated ink together to create a print-ready ink.Type: ApplicationFiled: March 25, 2011Publication date: July 14, 2011Inventors: James M. BRENNER, Harold F. Mantooth, Jeffrey D. Langford
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Patent number: 7922314Abstract: One method of ink formulation may include providing a shipping material in a reservoir of a printing mechanism, placing a concentrated ink in communication with the reservoir, and mixing the shipping material and the concentrated ink together to create a print-ready ink.Type: GrantFiled: July 30, 2004Date of Patent: April 12, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: James M Brenner, Harold F Mantooth, Jeffrey D Langford
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Patent number: 7628475Abstract: In one embodiment, a printhead assembly includes: an ink reservoir; a printhead; a passage for carrying ink from the ink reservoir to the printhead; and a port from the passage to a source of air pressure. The port is operable between a closed position in which the passage is not pressurized with air and an open position in which the passage is exposed to pressurized air. In another embodiment, an ink supply includes: a reservoir for holding ink; a printhead; a standpipe connecting the reservoir and the printhead such that ink may flow from the reservoir to the printhead through the standpipe; and a valve operatively connected to the standpipe. The valve is operative between a first position in which the standpipe is pressurized with air and a second position in which of the standpipe is not pressurized with air.Type: GrantFiled: October 29, 2007Date of Patent: December 8, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Ross E Friesen, Carrie E. Harris, Harold F Mantooth, Donald L. Michael
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Patent number: 7556367Abstract: An ink delivery system having a fluid supply and a printhead assembly, separate from and in fluid communication with the fluid supply. A primary flow path is configured to facilitate the delivery of fluid from the fluid supply to the printhead assembly, and a return flow path, at least partially separate from the primary flow path, is configured to facilitate the evacuation of fluid from the printhead assembly.Type: GrantFiled: December 20, 2007Date of Patent: July 7, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Harold F Mantooth, Carrie E Harris
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Patent number: 7543908Abstract: Systems, methodologies, media, and other embodiments associated with clearing silicate based kogation from heating resistors employed in ink jet printing are described. One exemplary system embodiment includes a silicate kogation clearing logic configured to pulse the heating resistor at a high frequency and low pulse width to heat the resistor surface to a temperature below that required to form an ink bubble and thus below that required to eject a drop of ink. Heating the resistor facilitates breaking bonds between the silicate based kogation and the heating resistor.Type: GrantFiled: August 23, 2005Date of Patent: June 9, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Morgan G. Jones, Satya Prakash, Jeffrey D. Langford
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Patent number: 7510274Abstract: An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube.Type: GrantFiled: January 21, 2005Date of Patent: March 31, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeremy A Davis, Melissa S. Gedraitis, Marc A. Baldwin, Louis Barinaga, Daniel D Dowell, Ashley E Childs, Mark A. Smith, Charles R. Steinmetz, Ralph L. Stathem, Jeffrey D. Langford, Michael L. Hilton
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Publication number: 20090058956Abstract: An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube. A method for controlling effects of accumulated air in a printhead assembly. The printhead assembly has at least one ink reservoir and one standpipe separated by a particle filter. The printhead assembly is fluidicly connected to at least one off-axis ink supply container by at least one tube. The method includes drawing air from said printhead assembly through said standpipe into the tube.Type: ApplicationFiled: October 30, 2008Publication date: March 5, 2009Inventors: JEREMY A. DAVIS, Melissa S. Gedraitis, Marc A. Baldwin, Louis Barinaga, Daniel D. Dowell, Ashley E. Childs, Mark A. Smith, Charles R. Steinmetz, Ralph L. Stathem, Jeffrey D. Langford, Michael L. Hitton
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Publication number: 20090051742Abstract: An ink delivery system having at least one off-axis ink supply container and an on-axis printhead assembly. The printhead assembly includes at least one reservoir and a corresponding standpipe separated by a particle filter. At least one tube connects the off-axis ink supply container to the printhead assembly. A first valve is configured to selectively open a flow path between the tube and the reservoir. A second valve is configured to selectively open a flow path between the standpipe and the tube. A method for controlling effects of accumulated air in a printhead assembly. The printhead assembly has at least one ink reservoir and one standpipe separated by a particle filter. The printhead assembly is fluidicly connected to at least one off-axis ink supply container by at least one tube. The method includes drawing air from said printhead assembly through said standpipe into the tube.Type: ApplicationFiled: October 30, 2008Publication date: February 26, 2009Inventors: JEREMY A. DAVIS, Melissa S. Gedraitis, Marc A. Baldwin, Louis Barinaga, Daniel D. Dowell, Ashley E. Childs, Mark A. Smith, Charles R. Steinmetz, Ralph L. Stathem, Jeffrey D. Langford, Michael L. Hilton
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Publication number: 20080273069Abstract: One embodiment of a method of storing a printhead includes opening a valve to a vent of an ink reservoir, operating a pump in a first direction to pull ink from the ink reservoir through said valve, and pumping the ink pulled from the ink reservoir to an ink supply container.Type: ApplicationFiled: July 14, 2008Publication date: November 6, 2008Inventors: Jeffrey D. Langford, Donald L. Michael, Kris M. English, Carrie E. Harris
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Publication number: 20080252706Abstract: An ink delivery system having a fluid supply and a printhead assembly, separate from and in fluid communication with the fluid supply. A primary flow path is configured to facilitate the delivery of fluid from the fluid supply to the printhead assembly, and a return flow path, at least partially separate from the primary flow path, is configured to facilitate the evacuation of fluid from the printhead assembly.Type: ApplicationFiled: December 20, 2007Publication date: October 16, 2008Inventors: Jeffrey D. Langford, Harold F. Mantooth, Carrie E. Harris
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Patent number: 7416293Abstract: One embodiment of a method of storing a printhead includes opening a valve to a vent of an ink reservoir, operating a pump in a first direction to pull ink from the ink reservoir through said valve, and pumping the ink pulled from the ink reservoir to an ink supply container.Type: GrantFiled: February 18, 2005Date of Patent: August 26, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Donald L Michael, Kris M. English, Carrie E Harris
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Patent number: 7331664Abstract: An ink delivery system having a fluid supply and a printhead assembly, separate from and in fluid communication with the fluid supply. A primary flow path is configured to facilitate the delivery of fluid from the fluid supply to the printhead assembly, and a return flow path, at least partially separate from the primary flow path, is configured to facilitate the evacuation of fluid from the printhead assembly.Type: GrantFiled: October 29, 2004Date of Patent: February 19, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Harold F Mantooth, Carrie E Harris
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Patent number: 7296881Abstract: A valve mechanism and a method for preparing an inkjet print cartridge and printer for inactivity is herein disclosed. Pressurized fluid is introduced to a standpipe volume to create a pressure differential that forces ink within the standpipe into an ink reservoir.Type: GrantFiled: January 21, 2005Date of Patent: November 20, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Ross E Friesen, Carrie E. Harris, Harold F Mantooth, Donald L Michael
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Patent number: 7237879Abstract: An inkjet printhead and a method for increasing the shelf life thereof are herein disclosed. The inkjet printhead has one or more nozzles for dispensing a colorant. These nozzles are fluidically connected to a reservoir. A first colorant substantially fills the nozzles while a second colorant is reserved in the reservoir.Type: GrantFiled: July 30, 2004Date of Patent: July 3, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey D Langford, Donald L. Michael, Harold F Mantooth
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Patent number: 6655794Abstract: Methods and apparatus are provided for forming a seal between two or more components using a thermally cured sealing material. One exemplary method includes selectively applying an electrical signal to a heating trace on a first component, applying a sealing material between at least a portion of the first component and at least a portion of a second component, and at least partially thermally curing the sealing material using thermal energy generated by the application of the electrical signal to the heating trace.Type: GrantFiled: January 31, 2002Date of Patent: December 2, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: Mark R. Natterer, Jeffrey D. Langford, Leo Clarke, Jr.
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Publication number: 20030142182Abstract: Methods and apparatus are provided for forming a seal between two or more components using a thermally cured sealing material. One exemplary method includes selectively applying an electrical signal to a heating trace on a first component, applying a sealing material between at least a portion of the first component and at least a portion of a second component, and at least partially thermally curing the sealing material using thermal energy generated by the application of the electrical signal to the heating trace.Type: ApplicationFiled: January 31, 2002Publication date: July 31, 2003Inventors: Mark R. Natterer, Jeffrey D. Langford, Leo Clarke