Patents by Inventor Shawn Edward O'Hara

Shawn Edward O'Hara 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).

  • Electrophotographic printing with column-dependent tonescale adjustment
    Patent number: 8824907
    Abstract: Electrophotographic (EP) streaking compensation is performed. A tonescale is measured for each column and a per-column gain computed to compensate for variations. An adjustment tonescale is determined and a per-column adjustment-tonescale gain computed to correct for remaining error after the per-column gain is applied. The two corrections are used together to provide improved compensation quality.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: September 2, 2014
    Assignee: Eatsman Kodak Company
    Inventors: Chung-Hui Kuo, Stephen J. Farnand, Shawn Edward O'Hara, Stacy M. Munechika
  • ELECTROPHOTOGRAPHIC PRINTING WITH COMPENSATION
    Publication number: 20120269527
    Abstract: Electrophotographic (EP) streaking compensation is performed. A tonescale is measured for each column and a per-column gain computed to compensate for variations. An adjustment tonescale is determined and a per-column adjustment-tonescale gain computed to correct for remaining error after the per-column gain is applied. The two corrections are used together to provide improved compensation quality.
    Type: Application
    Filed: October 10, 2011
    Publication date: October 25, 2012
    Inventors: CHUNG-HUI KUO, Stephen J. Farnand, Shawn Edward O'Hara, Stacy M. Munechika