Patents by Inventor Brad Thomas Dransfield

Brad Thomas Dransfield 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).

  • Charge roller voltage determination
    Patent number: 11320761
    Abstract: An electrophotographic printer includes a charge roller in charge-transferring relation to a photoconductive imaging portion. The printer may determine an AC voltage setpoint of the charge roller.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 3, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Seongsik Chang, Brad Thomas Dransfield, Eric G. Nelson, Bruce J. Jackson, Omer Gila, Anthony William McLennan, Asaf Anufa, Daniel Espinosa
  • CHARGE ROLLER VOLTAGE DETERMINATION
    Publication number: 20210302860
    Abstract: An electrophotographic printer includes a charge roller in charge-transferring relation to a photoconductive imaging portion. The printer may determine an AC voltage setpoint of the charge roller.
    Type: Application
    Filed: December 20, 2018
    Publication date: September 30, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Seongsik Chang, Brad Thomas Dransfield, Eric G. Nelson, Bruce J. Jackson, Omer Gila, Anthony William McLennan, Asaf An ufa, Daniel Espinosa
  • Scanner
    Patent number: D756361
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: May 17, 2016
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Daniel Huang, Brad Thomas Dransfield, Jeffery Patrick, Paul K. Mui