Patents by Inventor Brian J. Keefe

Brian J. Keefe 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).

  • Publication number: 20200164661
    Abstract: Herein is disclosed a method of transfer inkjet printing comprising jetting a radiation curable inkjet ink onto an intermediate transfer member of an inkjet printer to form an image; irradiating the radiation curable inkjet ink on the intermediate transfer member to form an at least partially cured image; and transferring the at least partially cured image to a substrate to form a printed substrate. Herein is also disclosed a transfer inkjet printing apparatus adapted, in use, to perform the method.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 28, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane, Shao-Wei Li, Brian J. Keefe
  • Patent number: 10654275
    Abstract: A fluid injection module may include a fluid ejection die, a die carrier, a bypass fluid passage in at least one pressure regulator. The fluid ejection die may include nozzle orifices on a front face of the die, first and second fluid passages extending through the die and a microchannel extending from the first fluid passage to the second fluid passage proximate the nozzle orifices to circulate fluid from the first fluid passage to the second fluid passage. Third and fourth fluid passages may extend through the die carrier. The bypass fluid passage may extend from the third fluid passage to the fourth fluid passage while being connected to the first fluid passage and the second fluid passage. The at least one pressure regulator is to induce pressure differential driven fluid flow across the microchannel and across the bypass fluid passage.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 19, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Publication number: 20200140711
    Abstract: Herein is disclosed a method of transfer inkjet printing comprising applying a radiation curable primer onto an intermediate transfer member of an inkjet printer to form a radiation curable primer layer; jetting a radiation curable inkjet ink onto the radiation curable primer layer on the intermediate transfer member to form an image; irradiating the radiation curable inkjet ink and the radiation curable primer on the intermediate transfer member to form an at least partially cured image; and transferring the at least partially cured image to a substrate to form a printed substrate. Herein is also disclosed a transfer inkjet printer adapted, in use, to perform the method.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 7, 2020
    Inventors: Zhang-Lin ZHOU, STRAMEL David Rodney, Gregg A. LANE, Yubai Bl, Brian J. KEEFE
  • Patent number: 10507662
    Abstract: A print module may include a printhead die. The printhead die may include a chamber layer having ink chambers and micro-channels formed in the chamber layer. The print module may further include a die carrier including manifold passages through which ink flows to and from the printhead die and dual pressure regulators to flow fluid through the micro-channels of the printhead die.
    Type: Grant
    Filed: September 9, 2018
    Date of Patent: December 17, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Publication number: 20190111687
    Abstract: A fluid injection module may include a fluid ejection die, a die carrier, a bypass fluid passage in at least one pressure regulator. The fluid ejection die may include nozzle orifices on a front face of the die, first and second fluid passages extending through the die and a microchannel extending from the first fluid passage to the second fluid passage proximate the nozzle orifices to circulate fluid from the first fluid passage to the second fluid passage. Third and fourth fluid passages may extend through the die carrier. The bypass fluid passage may extend from the third fluid passage to the fourth fluid passage while being connected to the first fluid passage and the second fluid passage. The at least one pressure regulator is to induce pressure differential driven fluid flow across the microchannel and across the bypass fluid passage.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Patent number: 10179455
    Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 15, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Publication number: 20190001686
    Abstract: A print module may include a printhead die. The printhead die may include a chamber layer having ink chambers and micro-channels formed in the chamber layer. The print module may further include a die carrier including manifold passages through which ink flows to and from the printhead die and dual pressure regulators to flow fluid through the micro-channels of the printhead die.
    Type: Application
    Filed: September 9, 2018
    Publication date: January 3, 2019
    Applicant: HEWLETI-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Patent number: 9931847
    Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: April 3, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey Allen Wagner, Thomas M Sabo, Ronald A Askeland, Gonzalo Gaston Llado, Alyssa Michelle Siegman, Lawrence H White, Alex Andrea Tallada, Brian J Keefe, Maria Magdalena Martinez Ferrandiz, Daniel Vincent Keane, Yi Hong Tor, Marian Dinares Argemi, Francisco Lopez Moral, Xavier Bruch, Chandrasekhar Nadimpalli
  • Publication number: 20170313088
    Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Patent number: 9724926
    Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: August 8, 2017
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Publication number: 20170217189
    Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.
    Type: Application
    Filed: July 31, 2014
    Publication date: August 3, 2017
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jeffrey Allen Wagner, Thomas M Sabo, Ronald A Askeland, Gonzalo Gaston Llado, Alyssa Michelle Siegman, Lawrence H White, Alex Andrea Tallada, Brian J Keefe, Maria Magdalena Martinez Ferrandiz, Daniel Vincent Keane, Yi Hong Tor, Marian Dinares Argemi, Francisco Lopez Moral, Xavier Bruch, Chandrasekhar Nadimpalli
  • Publication number: 20130169710
    Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.
    Type: Application
    Filed: October 19, 2010
    Publication date: July 4, 2013
    Inventors: Brian J. Keefe, Joseph E. Scheffelin, James W. Ring, Mark A. Devries
  • Patent number: 7048359
    Abstract: An ink-jet printhead is provided having a thin film substrate comprising a plurality of thin film layers; a plurality of ink firing heater resistors defined in said plurality of thin film layers; a polymer fluid barrier layer; and a carbon rich layer disposed on said plurality of thin film layers, for bonding said polymer fluid barrier layer to said thin film substrate.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: May 23, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Brian J. Keefe, Ali Emamjomeh, Roger J. Kolodziej, Michael J. Regan, Harold Lee Van Nice
  • Patent number: 6997540
    Abstract: A fluid ejection assembly includes a substrate and a plurality of fluid ejection devices each mounted on the substrate. The substrate includes a frame formed of a first material and a body formed of a second material such that the body substantially surrounds the frame and forms a first side and a second side of the substrate with each of the fluid ejection devices being mounted on the first side of the substrate.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: February 14, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Janis Horvath, Brian J. Keefe, Joseph E. Scheffelin, Mohammad Akhavin, David K. McElfresh, Noah Carl Lassar
  • Patent number: 6880246
    Abstract: A method of forming a fluid ejection assembly includes providing a substrate including a plurality of layers and having a plurality of fluid passages extending through the plurality of layers, extending a support between opposite sides of each of the fluid passages, and mounting a plurality of fluid ejection devices on the substrate, including communicating each of the fluid ejection devices with one of the fluid passages.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 19, 2005
    Assignee: Hewlett-Packard Development Company, L.P
    Inventors: Janis Horvath, Mohammad Akhavin, Joseph E. Scheffelin, Brian J. Keefe, David McElfresh, Pere Esterri
  • Patent number: 6843552
    Abstract: A printhead assembly includes a carrier having a first side and a second side contiguous with the first side, a plurality of printhead dies each mounted on the first side of the carrier, an electrical circuit including a first portion disposed on the first side of the carrier and a second portion disposed on the second side of the carrier, and a plurality of electrical connectors each electrically coupled to the first portion of the electrical circuit and one of the printhead dies. The electrical circuit has a plurality of openings defined in the first portion thereof such that each of the openings are sized to accommodate one of the printhead dies, and has a first side facing the carrier and a second side opposite the first side thereof such that each of the electrical connectors are electrically coupled to the second side of the electrical circuit and one of the printhead dies.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: January 18, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David McElfresh, Noah Carl Lassar, Mohammad Akhavain, Brian J. Keefe, Joseph E. Scheffelin, Janis Horvath, Dale Dean Timm, Jr.
  • Publication number: 20040100522
    Abstract: A fluid ejection assembly includes a substrate and a plurality of fluid ejection devices each mounted on the substrate. The substrate includes a frame formed of a first material and a body formed of a second material such that the body substantially surrounds the frame and forms a first side and a second side of the substrate with each of the fluid ejection devices being mounted on the first side of the substrate.
    Type: Application
    Filed: October 8, 2003
    Publication date: May 27, 2004
    Inventors: Janis Horvath, Brian J. Keefe, Joseph E. Scheffelin, Mohammad Akhavin, David K. McElfresh, Noah Carl Lassar
  • Patent number: 6705705
    Abstract: A fluid ejection assembly includes a substrate and a plurality of fluid ejection devices each mounted on the substrate. The substrate includes a frame formed of a first material and a body formed of a second material such that the body substantially surrounds the frame and forms a first side and a second side of the substrate with each of the fluid ejection devices being mounted on the first side of the substrate.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: March 16, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Janis Horvath, Brian J. Keefe, Joseph E. Scheffelin, Mohammad Akhavain, David K. McElfresh, Noah Carl Lassar
  • Publication number: 20030231229
    Abstract: A fluid ejection assembly includes a substrate including a plurality of layers and having a plurality of fluid passages extending through the plurality of layers, with each of the fluid passages having a support extending between opposite sides thereof, and a plurality of fluid ejection devices each mounted on the substrate and communicating with a respective one of the fluid passages.
    Type: Application
    Filed: November 12, 2002
    Publication date: December 18, 2003
    Inventors: Janis Horvath, Mohammad Akhavin, Joseph E. Scheffelin, Brian J. Keefe, David McElfresh, Pere Esterri
  • Patent number: 6659596
    Abstract: An ink-jet printhead is provided having a thin film substrate comprising a plurality of thin film layers; a plurality of ink firing heater resistors defined in said plurality of thin film layers; a polymer fluid barrier layer; and a carbon rich layer disposed on said plurality of thin film layers, for bonding said polymer fluid barrier layer to said thin film substrate.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: December 9, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Brian J. Keefe, Ali Emamjomeh, Roger J. Kolodziej, Michael J. Regan, Harold Lee Van Nice