Patents by Inventor Timothy Jacob Luedeman

Timothy Jacob Luedeman 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: 20220009250
    Abstract: In some examples, a system can include: a heating device, a Proportional Integral Derivative (PID) controller and a switching mechanism to selectively enable transmission of signals to the heating device based on a real time temperature in proximity to the heating device, wherein the PID controller is to continuously output pulse width modulation (PWM) signals independent of selective transmission of signals by the switching mechanism.
    Type: Application
    Filed: December 21, 2018
    Publication date: January 13, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Daniel James Magnusson, Robert Yraceburu, Timothy Jacob Luedeman
  • Patent number: 11173701
    Abstract: An example of a print system including a dryer to dry a sheet of paper. The print system includes a media feeder to feed the sheet of paper into the dryer and a controller to vary a speed of the media feeder. The print system includes a communication interface to receive data associated with an image to print on the sheet of paper and a processor. The processor is coupled to the controller and the communication interface. The processor is to determine a first density index for a first portion of the image and to determine a second density index for a second portion of the image. The processor is to adjust the speed of the media feeder via the controller based on the first density index and the second density index.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 16, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert Yraceburu, Timothy Jacob Luedeman
  • Patent number: 11155103
    Abstract: A printer including a print bar and a dryer system. The print bar operates to deposit printing material in accordance with a print job. The dryer system operates to intake and heat air from an internal region in which one or more electrical components of the printer are located. The dryer system directs the heated air through multiple outlets that are acutely angled with respect to a location or media of deposited printing material, to dry the printing material while cooling the internal region of the printer.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: October 26, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert Yraceburu, William Winters, Timothy Jacob Luedeman
  • Publication number: 20200180302
    Abstract: An example of a print system including a dryer to dry a sheet of paper. The print system includes a media feeder to feed the sheet of paper into the dryer and a controller to vary a speed of the media feeder. The print system includes a communication interface to receive data associated with an image to print on the sheet of paper and a processor. The processor is coupled to the controller and the communication interface. The processor is to determine a first density index for a first portion of the image and to determine a second density index for a second portion of the image. The processor is to adjust the speed of the media feeder via the controller based on the first density index and the second density index.
    Type: Application
    Filed: September 1, 2017
    Publication date: June 11, 2020
    Inventors: Robert Yraceburu, Timothy Jacob Luedeman
  • Publication number: 20190381812
    Abstract: An example finishing device may include a monoclamp, a carrier body, and a biasing element located between the monoclamp and the carrier body to force the monoclamp away from the carrier body.
    Type: Application
    Filed: June 19, 2018
    Publication date: December 19, 2019
    Inventors: Robert Scott Beale, Bruce G. Johnson, Robert Yraceburu, Bob Reichert, Timothy Jacob Luedeman
  • Patent number: 10449783
    Abstract: In one example, a method for controlling temperature of a print dryer. High power is applied to a heater of the print dryer. A series of temperatures of the print dryer are periodically measured and stored until a target temperature for the print dryer is exceeded. Low power is applied to the heater after the target temperature is exceeded. A rate of temperature change at a time when the target temperature was exceeded is calculated from the stored temperatures. Using the rate, an initial heater duty cycle defining an initial heater power determined. PID control of the heater power is performed, beginning with the initial heater duty cycle, to maintain the print dryer temperature at the target temperature within a predefined accuracy.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 22, 2019
    Assignee: Hewlett-Packard Development Company, L. P.
    Inventors: Timothy Jacob Luedeman, Robert Matthew Yraceburu, Daniel James Magnusson
  • Publication number: 20190202217
    Abstract: A printer including a print bar and a dryer system. The print bar operates to deposit printing material in accordance with a print job. The dryer system operates to intake and heat air from an internal region in which one or more electrical components of the printer are located. The dryer system directs the heated air through multiple outlets that are acutely angled with respect to a location or media of deposited printing material, to dry the printing material while cooling the internal region of the printer.
    Type: Application
    Filed: September 12, 2016
    Publication date: July 4, 2019
    Inventors: Robert Yraceburu, William Winters, Timothy Jacob Luedeman
  • Patent number: 10144228
    Abstract: In one example, a media guide for use in a printer having a print bar and a print zone adjacent to the print bar includes a movable blocker downstream from the print zone along a media path and movable though a range of motion to block print media from leaving the media path when exiting the print zone.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: December 4, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Timothy Jacob Luedeman, Kevin Lo, Wesley R. Schalk
  • Patent number: 10086633
    Abstract: In an example, a printing device can include a pivot point, a bias arm formed of a rigid member to rotate about the pivot point, the bias arm comprising a first end to extend into a print zone and a second end opposite the first end, and a spring in communication with the second end of the bias arm to bias the first end to contact the platen.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: October 2, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert Yraceburu, Timothy Jacob Luedeman
  • Publication number: 20180236788
    Abstract: In one example, a method for controlling temperature of a print dryer. High power is applied to a heater of the print dryer. A series of temperatures of the print dryer are periodically measured and stored until a target temperature for the print dryer is exceeded. Low power is applied to the heater after the target temperature is exceeded. A rate of temperature change at a time when the target temperature was exceeded is calculated from the stored temperatures. Using the rate, an initial heater duty cycle defining an initial heater power determined. PID control of the heater power is performed, beginning with the initial heater duty cycle, to maintain the print dryer temperature at the target temperature within a predefined accuracy.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 23, 2018
    Inventors: Timothy Jacob Luedeman, Robert Matthew Yraceburu, Daniel James Magnusson
  • Patent number: 9975351
    Abstract: In one example, a method for controlling temperature of a print dryer. High power is applied to a heater of the print dryer. A series of temperatures of the print dryer are periodically measured and stored until a target temperature for the print dryer is exceeded. Low power is applied to the heater after the target temperature is exceeded. A rate of temperature change at a time when the target temperature was exceeded is calculated from the stored temperatures. Using the rate, an initial heater duty cycle defining an initial heater power determined. PID control of the heater power is performed, beginning with the initial heater duty cycle, to maintain the print dryer temperature at the target temperature within a predefined accuracy.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: May 22, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Timothy Jacob Luedeman, Robert Matthew Yraceburu, Daniel James Magnusson
  • Patent number: 9731518
    Abstract: In one example, a media guide for use in a printer having a print bar and a print zone adjacent to the print bar includes a movable blocker downstream from the print zone along a media path and movable though a range of motion to block print media from leaving the media path when exiting the print zone.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: August 15, 2017
    Inventors: Timothy Jacob Luedeman, Kevin Lo, Wesley R Schalk
  • Publication number: 20170100944
    Abstract: In one example, a media guide for use in a printer having a print bar and a print zone adjacent to the print bar includes a movable blocker downstream from the print zone along a media path and movable though a range of motion to block print media from leaving the media path when exiting the print zone,
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Timothy Jacob Luedeman, Kevin Lo, Wesley R. Schalk
  • Patent number: 9211718
    Abstract: In one example, a shroud to protect a printhead in a print bar includes: an elongated body having an opening therein through which a printhead may dispense liquid past the shroud when the shroud is affixed to the print bar; and a bump on an exterior surface of the body next to the opening. The bump is configured to guide a leading edge of print media away from the printhead during printing when the shroud is affixed to the print bar and the print bar is installed in a printer.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: December 15, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Timothy Jacob Luedeman, James D. Plymale
  • Publication number: 20150231898
    Abstract: In one example, a media guide for use in a printer having a print bar and a print zone adjacent to the print bar includes a movable blocker downstream from the print zone along a media path and movable though a range of motion to block print media from leaving the media path when exiting the print zone.
    Type: Application
    Filed: April 10, 2012
    Publication date: August 20, 2015
    Inventors: Timothy Jacob Luedeman, Kevin Lo, Wesley R. Schalk
  • Publication number: 20150124022
    Abstract: In one example, a shroud to protect a printhead in a print bar includes: an elongated body having an opening therein through which a printhead may dispense liquid past the shroud when the shroud is affixed to the print bar; and a bump on an exterior surface of the body next to the opening. The bump is configured to guide a leading edge of print media away from the printhead during printing when the shroud is affixed to the print bar and the print bar is installed in a printer.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 7, 2015
    Inventors: Timothy Jacob Luedeman, James D. Plymale