Patents by Inventor Rudi Lenders

Rudi Lenders 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).

  • Method for reducing image quality artifacts in three-dimensional printing
    Patent number: 8848233
    Abstract: A relief print master, such as a flexographic print master or sleeve is created by printing a sequence of intermediate layers on top of each other with an inkjet printing system. The top layer corresponds with the halftoned image that is to be printed by the print master and the lower intermediate layers are supporting layers. The pixels of the intermediate layers that are stacked on top of each other are printed with different nozzles to reduce image quality artifacts. Both a method and a system are described.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: September 30, 2014
    Assignee: Agfa Graphics NV
    Inventors: Chris Gullentops, Rudi Lenders
  • Image processing method for three-dimensional printing
    Patent number: 8705144
    Abstract: A relief print master is created by printing a sequence of layers on top of each other by an inkjet printing system. The top layer corresponds with the binary halftoned image that is to be printed by the print master and the lower intermediate layers are supporting layers. The features in a lower supporting layer have an area that is larger than the corresponding features in a higher supporting layer. A circular spread function is applied on the features of a higher intermediate layer to increase the area of the features in a lower intermediate layer. By using a sequence of two non-circular spread functions, the circular spread function is approximated and the number of required calculations can be reduced.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 22, 2014
    Assignee: Agfa Graphics NV
    Inventors: Chris Gullentops, Rudi Lenders
  • IMAGE PROCESSING METHOD FOR THREE-DIMENSIONAL PRINTING
    Publication number: 20110249048
    Abstract: A relief print master is created by printing a sequence of layers on top of each other by an inkjet printing system. The top layer corresponds with the binary halftoned image that is to be printed by the print master and the lower intermediate layers are supporting layers. The features in a lower supporting layer have an area that is larger than the corresponding features in a higher supporting layer. A circular spread function is applied on the features of a higher intermediate layer to increase the area of the features in a lower intermediate layer. By using a sequence of two non-circular spread functions, the circular spread function is approximated and the number of required calculations can be reduced.
    Type: Application
    Filed: December 1, 2009
    Publication date: October 13, 2011
    Applicant: AGFA GRAPHICS NV
    Inventors: Chris Gullentops, Rudi Lenders
  • METHOD FOR REDUCING IMAGE QUALITY ARTIFACTS IN THREE-DIMENSIONAL PRINTING
    Publication number: 20110249298
    Abstract: A relief print master, such as a flexographic print master or sleeve is created by printing a sequence of intermediate layers on top of each other with an inkjet printing system. The top layer corresponds with the halftoned image that is to be printed by the print master and the lower intermediate layers are supporting layers. The pixels of the intermediate layers that are stacked on top of each other are printed with different nozzles to reduce image quality artifacts. Both a method and a system are described.
    Type: Application
    Filed: December 2, 2009
    Publication date: October 13, 2011
    Applicant: AGFA GRAPHICS NV
    Inventors: Chris Gullentops, Rudi Lenders