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).
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Publication number: 20220305795Abstract: 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: ApplicationFiled: March 23, 2021Publication date: September 29, 2022Inventors: Michael Joseph Han, Jafar N. Jefferson, Saurabh Shripad Bhide, Jeremy Barker, Keith Jariabka
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Patent number: 11260665Abstract: 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: GrantFiled: December 14, 2017Date of Patent: March 1, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keith Jariabka, Jafar N Jefferson, William Fournier
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Publication number: 20210170750Abstract: 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: ApplicationFiled: December 14, 2017Publication date: June 10, 2021Inventors: Keith Jariabka, Jafar N Jefferson, William Fournier
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Patent number: 9878545Abstract: 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: GrantFiled: August 8, 2016Date of Patent: January 30, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
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Patent number: 9849676Abstract: 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: GrantFiled: March 28, 2016Date of Patent: December 26, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Randal Morrison, Jafar N. Jefferson, Lisa Michels, Cris Jansson, Bob Davis
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Publication number: 20170274659Abstract: 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: ApplicationFiled: March 28, 2016Publication date: September 28, 2017Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Randal Morrison, Jafar N. Jefferson, Lisa Michels, Cris Jansson, Bob Davis
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Publication number: 20160339709Abstract: 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: ApplicationFiled: August 8, 2016Publication date: November 24, 2016Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
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Patent number: 9409401Abstract: 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: GrantFiled: April 30, 2010Date of Patent: August 9, 2016Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jafar N. Jefferson, Teressa L Roth, Jennifer Peterson
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Patent number: 8398205Abstract: 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: GrantFiled: June 25, 2010Date of Patent: March 19, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Teressa L. Roth, Hai-Lung James Hung, Jafar N. Jefferson, Eric Collins, Jennifer Peterson
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Publication number: 20130021409Abstract: 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: ApplicationFiled: April 30, 2010Publication date: January 24, 2013Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jafar N. Jefferson, Teressa L. Roth, Jennifer Peterson
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Publication number: 20110316928Abstract: 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: ApplicationFiled: June 25, 2010Publication date: December 29, 2011Inventors: Teressa L. Roth, Hai-Lung James Hung, Jafar N. Jefferson, Eric Collins, Jennifer Peterson
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Patent number: 6814423Abstract: 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: GrantFiled: June 18, 2002Date of Patent: November 9, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jafar N. Jefferson, William T. Stephenson, Jeffrey K. Pew
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Patent number: 6682167Abstract: 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: GrantFiled: June 27, 2002Date of Patent: January 27, 2004Assignee: Hewlett-Packard DevelopmentInventors: Robert D. Davis, Mike Burton, Bruce A. Axten, Jafar N. Jefferson, Daniel J. Magnusson
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Publication number: 20040001118Abstract: 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: ApplicationFiled: June 27, 2002Publication date: January 1, 2004Inventors: Robert D. Davis, Mike Burton, Bruce A. Axten, Jafar N. Jefferson, Daniel J. Magnusson
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Publication number: 20030231222Abstract: 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: ApplicationFiled: June 18, 2002Publication date: December 18, 2003Inventors: Jafar N. Jefferson, William T. Stephenson, Jeffrey K. Pew