Patents by Inventor Jafar N. Jefferson

Jafar N. Jefferson 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: 20220305795
    Abstract: In some examples, the disclosure describes a device that includes a moveable carriage, a chimney coupled to a first side of the moveable carriage to be positioned to receive a print substance when the moveable carriage is in a particular position, and a reservoir coupled to a second side of the moveable carriage to collect the print substance received at the chimney.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 29, 2022
    Inventors: Michael Joseph Han, Jafar N. Jefferson, Saurabh Shripad Bhide, Jeremy Barker, Keith Jariabka
  • Patent number: 11260665
    Abstract: An example apparatus includes a gear comprising a gear hub; a swing-arm rotationally engaged with the gear hub; and a spring circumferentially engaged with the gear hub and the swing-arm to apply a radial clamping force between the swing-arm and the gear hub. Torque is frictionally coupled from the gear hub to the swing-arm to lock a capped print head assembly (PHA) in a non-printing location.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 1, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keith Jariabka, Jafar N Jefferson, William Fournier
  • Publication number: 20210170750
    Abstract: An example apparatus includes a gear comprising a gear hub; a swing-arm rotationally engaged with the gear hub; and a spring circumferentially engaged with the gear hub and the swing-arm to apply a radial clamping force between the swing-arm and the gear hub. Torque is frictionally coupled from the gear hub to the swing-arm to lock a capped print head assembly (PHA) in a non-printing location.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 10, 2021
    Inventors: Keith Jariabka, Jafar N Jefferson, William Fournier
  • Patent number: 9878545
    Abstract: In an inkjet printer having a small print head assembly and a large print head assembly, a wiper includes a first wiper section having a width approximately equal to a width of an orifice area of the small print head assembly, a decoupler adjacent to the first wiper section, a second wiper section adjacent to the decoupler, where the first and the second wiper sections and the decoupler combined have a width approximately equal to a width of an orifice area of the large print head assembly, and a squared tip at an extremity of the single, segmented wiper to impede wicking action. A tab holds the wiper oriented so as to wipe the print head assemblies in a direction of a printing operation.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: January 30, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
  • Patent number: 9849676
    Abstract: A printer includes a printhead assembly, a spit zone, and a controller. The printhead assembly includes nozzles to eject ink drops. The spit zone is to store maintenance ink. The controller is to move the printhead assembly over the spit zone while ink is ejected from the nozzles during spits.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: December 26, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Randal Morrison, Jafar N. Jefferson, Lisa Michels, Cris Jansson, Bob Davis
  • Publication number: 20170274659
    Abstract: A printer includes a printhead assembly, a spit zone, and a controller. The printhead assembly includes nozzles to eject ink drops. The spit zone is to store maintenance ink. The controller is to move the printhead assembly over the spit zone while ink is ejected from the nozzles during spits.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 28, 2017
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Randal Morrison, Jafar N. Jefferson, Lisa Michels, Cris Jansson, Bob Davis
  • Publication number: 20160339709
    Abstract: In an inkjet printer having a small print head assembly and a large print head assembly, a wiper includes a first wiper section having a width approximately equal to a width of an orifice area of the small print head assembly, a decoupler adjacent to the first wiper section, a second wiper section adjacent to the decoupler, where the first and the second wiper sections and the decoupler combined have a width approximately equal to a width of an orifice area of the large print head assembly, and a squared tip at an extremity of the single, segmented wiper to impede wicking action. A tab holds the wiper oriented so as to wipe the print head assemblies in a direction of a printing operation.
    Type: Application
    Filed: August 8, 2016
    Publication date: November 24, 2016
    Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
  • Patent number: 9409401
    Abstract: In an inkjet printer having a small print head assembly and a large print head assembly, a wiper includes a first wiper section having a width approximately equal to a width of an orifice area of the small print head assembly, a decoupler adjacent to the first wiper section, a second wiper section adjacent to the decoupler, where the first and the second wiper sections and the decoupler combined have a width approximately equal to a width of an orifice area of the large print head assembly, and a squared tip at an extremity of the single, segmented wiper to impede wicking action. A tab holds the wiper oriented so as to wipe the print head assemblies in a direction of a printing operation.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: August 9, 2016
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jafar N. Jefferson, Teressa L Roth, Jennifer Peterson
  • Patent number: 8398205
    Abstract: A wiping device for an inkjet printer includes a wiper mount moveable between a wiping position and a non-wiping position. A slider coupled to the wiper mount, translates between a retracted position and a deployed position. A first translation of the slider to the deployed position causes the wiper mount to move into the wiping position. A trigger, operable between a cocked position and an un-cocked position is coupled to the slider. In the cocked position, the trigger locks the wiper mount in the wiping position. When actuated, the trigger moves to the un-cocked position and the wiper mount moves to the non-wiping position. The wiping device includes logic to control the actuation and non-actuation of trigger.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: March 19, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Teressa L. Roth, Hai-Lung James Hung, Jafar N. Jefferson, Eric Collins, Jennifer Peterson
  • Publication number: 20130021409
    Abstract: In an inkjet printer having a small print head assembly and a large print head assembly, a wiper includes a first wiper section having a width approximately equal to a width of an orifice area of the small print head assembly, a decoupler adjacent to the first wiper section, a second wiper section adjacent to the decoupler, where the first and the second wiper sections and the decoupler combined have a width approximately equal to a width of an orifice area of the large print head assembly, and a squared tip at an extremity of the single, segmented wiper to impede wicking action. A tab holds the wiper oriented so as to wipe the print head assemblies in a direction of a printing operation.
    Type: Application
    Filed: April 30, 2010
    Publication date: January 24, 2013
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
  • Publication number: 20110316928
    Abstract: A wiping device for an inkjet printer includes a wiper mount moveable between a wiping position and a non-wiping position. A slider coupled to the wiper mount, translates between a retracted position and a deployed position. A first translation of the slider to the deployed position causes the wiper mount to move into the wiping position. A trigger, operable between a cocked position and an un-cocked position is coupled to the slider. In the cocked position, the trigger locks the wiper mount in the wiping position. When actuated, the trigger moves to the un-cocked position and the wiper mount moves to the non-wiping position. The wiping device includes logic to control the actuation and non-actuation of trigger.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 29, 2011
    Inventors: Teressa L. Roth, Hai-Lung James Hung, Jafar N. Jefferson, Eric Collins, Jennifer Peterson
  • Patent number: 6814423
    Abstract: A capping system for a printhead comprises a frame including first and second surfaces, said second surface inclined with respect to said first surface, and a sealing member adapted for movement on said frame between a nominal position and a sealing position in contact with the printhead, said sealing member including a first support member adapted for rotational movement with respect to said first surface of the frame, and a second support member adapted for translational movement with respect to said second surface.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: November 9, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jafar N. Jefferson, William T. Stephenson, Jeffrey K. Pew
  • Patent number: 6682167
    Abstract: A method for reducing a servicing noise is provided. In a measuring action, a servicing position is measured using a full pushing force of an actuator applied to a service station. In a disengaging action, the actuator is disengaged from the service station. In a reducing action, the pushing force is reduced to a minimum value. In an engaging action, the service station is engaged with the actuator. In a monitoring action, a position of the actuator is monitored during the engagement. In a comparing action, the actuator position is compared to the stored servicing position. In an increasing action, the pushing force is increased for future engagements if the servicing position has not been reached. A printing mechanism configured to employ such a method is also provided.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: January 27, 2004
    Assignee: Hewlett-Packard Development
    Inventors: Robert D. Davis, Mike Burton, Bruce A. Axten, Jafar N. Jefferson, Daniel J. Magnusson
  • Publication number: 20040001118
    Abstract: A method for reducing a servicing noise is provided. In a measuring action, a servicing position is measured using a full pushing force of an actuator applied to a service station. In a disengaging action, the actuator is disengaged from the service station. In a reducing action, the pushing force is reduced to a minimum value. In an engaging action, the service station is engaged with the actuator. In a monitoring action, a position of the actuator is monitored during the engagement. In a comparing action, the actuator position is compared to the stored servicing position. In an increasing action, the pushing force is increased for future engagements if the servicing position has not been reached. A printing mechanism configured to employ such a method is also provided.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Inventors: Robert D. Davis, Mike Burton, Bruce A. Axten, Jafar N. Jefferson, Daniel J. Magnusson
  • Publication number: 20030231222
    Abstract: A capping system for a printhead comprises a frame including first and second surfaces, said second surface inclined with respect to said first surface, and a sealing member adapted for movement on said frame between a nominal position and a sealing position in contact with the printhead, said sealing member including a first support member adapted for rotational movement with respect to said first surface of the frame, and a second support member adapted for translational movement with respect to said second surface.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Inventors: Jafar N. Jefferson, William T. Stephenson, Jeffrey K. Pew