Patents by Inventor Joanne Lai Zen Lee

Joanne Lai Zen Lee 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).

  • Closed loop controls for transfer control in first transfer for optimized image content
    Patent number: 8526835
    Abstract: An electrostatic transfer control method that avoids undesired retransfer effects. A printing device develops and transfers several control patches. The patches are transferred at different electrostatic set points and a control strategy is utilized involving one or more density sensors to measure the transferred toner patches whereby the obtained density information can be used to compute the optimal value of electrostatic transfer bias. Print operators can adjust the bias value based on preferences for predetermined standards.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: September 3, 2013
    Assignee: Xerox Corporation
    Inventors: Joanne Lai Zen Lee, John T. Buzzelli
  • Closed loop controls for transfer control in first transfer for optimized image content
    Publication number: 20120269526
    Abstract: The subject embodiments disclose an electrostatic transfer control method that avoids undesired retransfer effects. A printing device develops and transfers several control patches. The patches are transferred at different electrostatic set points and a control strategy is utilized involving one or more density sensors to measure the transferred toner patches whereby the obtained density information can be used to compute the optimal value of electrostatic transfer bias. Print operators can adjust the bias value based on preferences for predetermined standards.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 25, 2012
    Applicant: Xerox Corporation
    Inventors: Joanne Lai Zen Lee, John T. Buzzelli