Patents by Inventor Jeffrey T. Hendricks
Jeffrey T. Hendricks 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: 8727515Abstract: In one embodiment, a fluid ejector assembly includes: a bay for holding a detachable fluid container that includes a fluid outlet at a forward part of the container; a fluid ejector; a fluid inlet at a forward part of the bay through which fluid from the outlet of a fluid container installed in the bay may pass to the fluid ejector; and a stationary guide configured to block an improper installation of a fluid container into the bay without also blocking a proper installation of the fluid container into the bay.Type: GrantFiled: May 31, 2008Date of Patent: May 20, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Daniel D. Dowell, Curt Gonzales, Bruce A. McFadden, Jeffrey T. Hendricks, David Welter, Mark A. Smith
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Patent number: 8430585Abstract: In one embodiment, an assembly includes: a print bar; first and second guide rods oriented parallel to one another; a first bracket slidable along the first guide rod and connected loosely to one end of the print bar; and a second bracket slidable along the second guide rod and connected loosely to the other end of the print bar. In another embodiment, a method includes: directly constraining a print bar in Z and theta Y at a first connection; indirectly constraining the print bar in theta Y at a second connection; and neutralizing the theta Y constraint at the second connection through a third connection between the first connection and the second connection.Type: GrantFiled: September 17, 2010Date of Patent: April 30, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T Hendricks, Kenneth Williams, Joseph E Scheffelin, Dan Dowell
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Patent number: 8403383Abstract: An apparatus and a method retain a print unit in a dock with a retainer that is at least partially below a top of a fluid supply of the print unit.Type: GrantFiled: October 10, 2008Date of Patent: March 26, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Bruce A. McFadden, Jeffrey T. Hendricks
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Patent number: 8360552Abstract: In one embodiment, a carriage for carrying a fluid ejector cartridge includes: a body having a bay therein for holding a fluid ejector cartridge; a pump mounted to the body; a retaining cover connected to the body, the cover movable between an open position in which the cartridge may be installed in or removed from the bay and a closed position in which the cover contacts the cartridge in the bay to help retain the cartridge in place in the bay; and a port disposed within the cover such that the cover port is connected to a port on the cartridge when the cartridge is installed in the bay and the cover is in the closed position, the cover port operatively connected to the pump so that a fluid may be pumped into the cartridge through the cover and cartridge ports.Type: GrantFiled: October 3, 2010Date of Patent: January 29, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Greg K. Justice, Jeffrey T. Hendricks, Michael L. Hilton, Patrick Therien
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Patent number: 8353566Abstract: In one embodiment, an assembly includes a lift and a print bar mounted to the lift. The lift includes first and second guide rods oriented parallel to one another and perpendicular to an axis of the print bar across the print zone. The first end of the print bar is slidably connected to the first guide rod, the second end of the print bar is slidably connected to the second guide rod, and the lift is configured to simultaneously move both ends of the print bar along the guide rods. In another embodiment, an assembly includes a chassis and a lift supported by the chassis. The lift is configured to loosely hold a print bar and to raise and lower the print bar over a print zone such that both ends of the print bar move simultaneously.Type: GrantFiled: September 17, 2010Date of Patent: January 15, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T Hendricks, Kenneth Williams, Joseph E Scheffelin, Dan Dowell
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Patent number: 8231199Abstract: A method of detecting orifice health includes moving a cap support into a drop detect position wherein a light source mounted on the cap support is positioned adjacent an array of fluid ejecting orifices, from the light source, projecting a light beam adjacent to the array of fluid ejecting orifices, ejecting at least one fluid drop from the array and through the light beam, and detecting scattered light from the at least one ejected fluid drop.Type: GrantFiled: May 26, 2009Date of Patent: July 31, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T. Hendricks, Alexander Govyadinov, Prodpran Suetrong
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Patent number: 8177318Abstract: An orifice health detection device includes a fixed array of ink ejecting orifices, the ink ejecting orifices configured to eject at least one ink drop, a light source that produces a light beam configured to scatter light from the at least one ejected ink drop, and a light detector configured to detect light scattered from the at least one ejected ink drop.Type: GrantFiled: March 17, 2009Date of Patent: May 15, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Alexander Govyadinov, Vanessa Verzwyvelt, Prodpran Suetrong, Jeffrey T. Hendricks
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Publication number: 20120070217Abstract: In one embodiment, an assembly includes: a print bar; first and second guide rods oriented parallel to one another; a first bracket slidable along the first guide rod and connected loosely to one end of the print bar; and a second bracket slidable along the second guide rod and connected loosely to the other end of the print bar. In another embodiment, a method includes: directly constraining a print bar in Z and theta Y at a first connection; indirectly constraining the print bar in theta Y at a second connection; and neutralizing the theta Y constraint at the second connection through a third connection between the first connection and the second connection.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Inventors: Jeffrey T. Hendricks, Kenneth Williams, Joseph E. Scheffelin, Dan Dowell
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Publication number: 20120069089Abstract: In one embodiment, an assembly includes a lift and a print bar mounted to the lift. The lift includes first and second guide rods oriented parallel to one another and perpendicular to an axis of the print bar across the print zone. The first end of the print bar is slidably connected to the first guide rod, the second end of the print bar is slidably connected to the second guide rod, and the lift is configured to simultaneously move both ends of the print bar along the guide rods. In another embodiment, an assembly includes a chassis and a lift supported by the chassis. The lift is configured to loosely hold a print bar and to raise and lower the print bar over a print zone such that both ends of the print bar move simultaneously.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Inventors: Jeffrey T. Hendricks, Kenneth Williams, Joseph E. Scheffelin, Dan Dowell
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Patent number: 8128195Abstract: Methods and means for wiping a page-wide print array are provided. An installable and removable cartridge includes a quantity of web material. The web material traverses a serpentine pathway and is driven by a motor such that fresh web material can be provided to a cleaning zone. The web material within the cleaning zone is wiped across the ink discharge surface of an array of printing dies to remove debris. Wiping action is performed perpendicular to a lengthwise aspect of the page-wide print array. Various embodiments of compact and effective cleaning mechanisms are thus provided in modular, replaceable forms.Type: GrantFiled: January 14, 2009Date of Patent: March 6, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T Hendricks, Gene D Jones
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Publication number: 20110205297Abstract: In one embodiment, a fluid ejector assembly includes: a bay for holding a detachable fluid container that includes a fluid outlet at a forward part of the container; a fluid ejector; a fluid inlet at a forward part of the bay through which fluid from the outlet of a fluid container installed in the bay may pass to the fluid ejector; and a stationary guide configured to block an improper installation of a fluid container into the bay without also blocking a proper installation of the fluid container into the bay.Type: ApplicationFiled: May 31, 2008Publication date: August 25, 2011Inventors: Daniel D. Dowell, Curt Gonzales, Bruce A. McFadden, Jeffrey T. Hendricks, David Welter, Mark A. Smith
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Publication number: 20110018948Abstract: In one embodiment, a carriage for carrying a fluid ejector cartridge includes: a body having a bay therein for holding a fluid ejector cartridge; a pump mounted to the body; a retaining cover connected to the body, the cover movable between an open position in which the cartridge may be installed in or removed from the bay and a closed position in which the cover contacts the cartridge in the bay to help retain the cartridge in place in the bay; and a port disposed within the cover such that the cover port is connected to a port on the cartridge when the cartridge is installed in the bay and the cover is in the closed position, the cover port operatively connected to the pump so that a fluid may be pumped into the cartridge through the cover and cartridge ports.Type: ApplicationFiled: October 3, 2010Publication date: January 27, 2011Inventors: Greg K. Justice, Jeffrey T. Hendricks, Michael L. Hilton, Patrick Therien
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Publication number: 20100177141Abstract: Methods and means for wiping a page-wide print array are provided. An installable and removable cartridge includes a quantity of web material. The web material traverses a serpentine pathway and is driven by a motor such that fresh web material can be provided to a cleaning zone. The web material within the cleaning zone is wiped across the ink discharge surface of an array of printing dies to remove debris. Wiping action is performed perpendicular to a lengthwise aspect of the page-wide print array. Various embodiments of compact and effective cleaning mechanisms are thus provided in modular, replaceable forms.Type: ApplicationFiled: January 14, 2009Publication date: July 15, 2010Inventors: Jeffrey T. Hendricks, Gene D. Jones
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Publication number: 20100091068Abstract: An apparatus and a method retain a print unit in a dock with a retainer that is at least partially below a top of a fluid supply of the print unit.Type: ApplicationFiled: October 10, 2008Publication date: April 15, 2010Inventors: Bruce A. McFadden, Jeffrey T. Hendricks
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Publication number: 20090244141Abstract: An orifice health detection device includes a fixed array of ink ejecting orifices, the ink ejecting orifices configured to eject at least one ink drop, a light source that produces a light beam configured to scatter light from the at least one ejected ink drop, and a light detector configured to detect light scattered from the at least one ejected ink drop.Type: ApplicationFiled: March 17, 2009Publication date: October 1, 2009Inventors: Alexander Govyadinov, Vanessa Verzwyvelt, Prodpran Suetrong, Jeffrey T. Hendricks
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Patent number: 6969148Abstract: An on-axis ink reservoir that is pivotally secured to the carriage of an inkjet printer thereby defining an engaged position, in which the ink reservoir is in fluid communication with a printhead secured to the carriage, and an open position, in which the ink reservoir pivots away from the printhead to allow easy access to the printhead without the need to remove the ink reservoir from the carriage. Preferably, the ink reservoir is detachably secured to an ink-reservoir mounting portion, the printhead is detachably secured to a printhead mounting-portion, and these two mounting portions are pivotally secured together. More preferably, the ink-reservoir mounting portion includes a plurality of ink reservoirs, and the printhead mounting-portion includes a plurality of printheads. A latching mechanism is provided to operably secure the two mounting portions together in the engaged position.Type: GrantFiled: July 31, 2001Date of Patent: November 29, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventors: Scott D. Sturgeon, Jeffrey T. Hendricks, David C. Johnson, Charles R. Steinmetz, Daniel W. Petersen
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Patent number: 6786582Abstract: The described embodiments relate to a print cartridge that can be configured to receive ink from one of at least two possible ink paths depending upon a desired printer configuration. In one exemplary embodiment, the print cartridge has a body configurable to receive ink from at least two different ink supply configurations, and a fluid interface that when coupled with the body effectively selects one of the ink supply configurations.Type: GrantFiled: January 28, 2002Date of Patent: September 7, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: James P. Kearns, Jeffrey T. Hendricks, Kris M. English, Norman E. Pawlowski, Jr.
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Patent number: 6779869Abstract: The present invention relates to a carriage for use in a printing device, the carriage including a carriage body with a bearing structure configured to support such carriage body for movement along a reference track. The carriage also includes a printhead anchored to the carriage body, and aligned directly relative to the carriage bearing structure.Type: GrantFiled: January 31, 2002Date of Patent: August 24, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey T. Hendricks, Si-Lam Choy, Ronald A. Hellekson, John M. Altendorf
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Patent number: 6755516Abstract: The present disclosure relates to a replaceable ink container for providing ink to an inkjet printing system. The inkjet printing system has a receiving station for receiving the replaceable ink container. The replaceable ink container includes a handle extending from a trailing end of the ink container for grasping the ink container for insertion into the receiving station. Also included is a latch for securing the replaceable ink container to the receiving station. The latch has an extended position for engaging the receiving station for securing the ink container to the receiving station and a retracted position. The latch is so disposed and arranged on the ink container to be urged from the extended position to the retracted position as the handle is grasped.Type: GrantFiled: May 16, 2002Date of Patent: June 29, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lisa M. Hanson, Curt G. Gonzales, Dion C. Davidson, Charles R. Steinmetz, Scott D. Sturgeon, David C. Johnson, Jeffrey T. Hendricks
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Patent number: 6692102Abstract: The present invention involves a printing device having a frame which defines therein X, Y, and Z operative, orthogonal axes, plural-site, Z-axis datuming structure operatively interposed a printhead assembly and a carriage supporting that assembly within the device, the Z-axis datuming structure, comprising first and second datuming sites spaced generally in an X-axis direction, and a third datuming site spaced from both the first and second sites in a Y-axis direction, and from at least one of the first and second sites in an X-axis direction.Type: GrantFiled: July 17, 2002Date of Patent: February 17, 2004Assignee: Hewlett-Packard Development Company, LPInventor: Jeffrey T. Hendricks