Patents by Inventor Steven Alan Seng

Steven Alan Seng 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).

  • Maintaining consistent darkness levels produced by a photoconductive drum during the life of the photoconductive drum
    Patent number: 10481497
    Abstract: An imaging device has a photoconductive drum with a surface that is charged and selectively discharged to create a latent electrostatic image of an image to-be-printed for attracting toner for transfer to a media. A memory of the imaging device stores energy density values for use by the laser beam that can be accessed by a controller according to a predetermined number of media imaged by the photoconductive drum. During imaging, the controller controls the laser beam based on the stored energy density values. The energy density of the laser beam is increased or decreased when the laser beam is scanned along the photoconductive drum.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: November 19, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Michael Wesley Brown, Mark Edwin Kirtley Lund, Steven Alan Seng
  • MAINTAINING CONSISTENT DARKNESS LEVELS PRODUCED BY A PHOTOCONDUCTIVE DRUM DURING THE LIFE OF THE PHOTOCONDUCTIVE DRUM
    Publication number: 20190171110
    Abstract: An imaging device has a photoconductive drum with a surface that is charged and selectively discharged to create a latent electrostatic image of an image to-be-printed for attracting toner for transfer to a media. A memory of the imaging device stores energy density values for use by the laser beam that can be accessed by a controller according to a predetermined number of media imaged by the photoconductive drum. During imaging, the controller controls the laser beam based on the stored energy density values. The energy density of the laser beam is increased or decreased when the laser beam is scanned along the photoconductive drum.
    Type: Application
    Filed: August 23, 2018
    Publication date: June 6, 2019
    Inventors: MICHAEL WESLEY BROWN, MARK EDWIN KIRTLEY LUND, STEVEN ALAN SENG
  • Maintaining consistent darkness levels produced by a photoconductive drum during the life of the photoconductive drum
    Patent number: 10197938
    Abstract: An imaging device has a photoconductive drum with a surface that is charged and selectively discharged to create a latent electrostatic image of an image to-be-printed for attracting toner for transfer to a media. A memory of the imaging device stores energy density values for use by the laser beam that can be accessed by a controller according to a predetermined number of media imaged by the photoconductive drum. During imaging, the controller controls the laser beam based on the stored energy density values. The energy density of the laser beam is increased or decreased when the laser beam is scanned along the photoconductive drum.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: February 5, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Michael Wesley Brown, Mark Edwin Kirtley Lund, Steven Alan Seng