Patents by Inventor Tesfalem Zewdneh

Tesfalem Zewdneh 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).

  • Phase change ink reservoir for a phase change inkjet printer
    Patent number: 8864293
    Abstract: A phase change inkjet printer including a heated phase change ink reservoir configured to reduce or prevent improper jetting of ink from a printhead. The reservoir includes a vent to atmosphere to provide substantially consistent and accurate jetting of the heated ink. A selective barrier, such as a filter, disposed adjacent to the vent substantially prevents ink from entering the vent while still enabling the vent to direct a pressure into the reservoir during printing and during purging.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: October 21, 2014
    Assignee: Xerox Corporation
    Inventors: David Paul Platt, David L. Knierim, Tesfalem Zewdneh
  • Phase Change Ink Reservoir for a Phase Change Inkjet Printer
    Publication number: 20140071205
    Abstract: A phase change inkjet printer including a heated phase change ink reservoir configured to reduce or prevent improper jetting of ink from a printhead. The reservoir includes a vent to atmosphere to provide substantially consistent and accurate jetting of the heated ink. A selective barrier, such as a filter, disposed adjacent to the vent substantially prevents ink from entering the vent while still enabling the vent to direct a pressure into the reservoir during printing and during purging.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: David Paul Platt, David L. Knierim, Tesfalem Zewdneh