Patents by Inventor Bene Poelsema

Bene Poelsema 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).

  • Orifice plate for an ink-jet print-head and a method for manufacturing the orifice plate
    Patent number: 8033645
    Abstract: An orifice plate for an ink jet print-head for ejecting drops of an ink, wherein the orifice plate includes an outer surface, which has a wettability with the ink, and at least one orifice arranged in the outer surface, said orifice being configured for ejecting ink drops, each orifice having an edge, the edge defining a transition boundary between the orifice and the outer surface, wherein the wettability of the outer surface is poor near the edge of the at least one orifice and the wettability increases with increasing distance from the edge of the orifice, the increasing wettability with the increasing distance from the edge of the orifice providing a driving force for moving residual ink drops away from the edge towards a wettable region, thereby reducing the risk of disturbing the trajectories of subsequent ejected ink drops.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 11, 2011
    Assignee: OCE-Technologies B.V.
    Inventors: Marcus J Van Den Berg, Evgenij V. Kuznetsov, Bene Poelsema, Ernst S. Kooij
  • ORIFICE PLATE FOR AN INK-JET PRINT-HEAD AND A METHOD FOR MANUFACTURING THE ORIFICE PLATE
    Publication number: 20090237453
    Abstract: An orifice plate for an ink jet print-head for ejecting drops of an ink, wherein the orifice plate includes an outer surface, which has a wettability with the ink, and at least one orifice arranged in the outer surface, said orifice being configured for ejecting ink drops, each orifice having an edge, the edge defining a transition boundary between the orifice and the outer surface, wherein the wettability of the outer surface is poor near the edge of the at least one orifice and the wettability increases with increasing distance from the edge of the orifice, the increasing wettability with the increasing distance from the edge of the orifice providing a driving force for moving residual ink drops away from the edge towards a wettable region, thereby reducing the risk of disturbing the trajectories of subsequent ejected ink drops.
    Type: Application
    Filed: December 22, 2008
    Publication date: September 24, 2009
    Applicant: OCE-TECHNOLOGIES B.V.
    Inventors: Marcus J Van Den Berg, Evgenij V. Kuznetsov, Bene Poelsema, Ernst S. Kooij