Method for reducing image quality artifacts in three-dimensional printing
First Claim
1. A method for printing a three-dimensional image including pixels in a fast scan dimension x, a slow scan dimension y, and a z dimension that is orthogonal to the x and y dimensions on a printable surface by a printhead including a plurality of marking elements, the method comprising the steps of:
- subdividing the three dimensional image into multiple two-dimensional images defining multiple two-dimensional intermediate layers parallel to the fast scan dimension x and the slow scan dimension y; and
printing the intermediate layers on top of each other in the z dimension by;
moving the printhead and the printable surface relative to each other in the fast scan dimension x to print a first set of pixels along the fast scan dimension x with a first set of marking elements over a first area; and
subsequently printing a second set of pixels in the fast scan dimension x with a second set of marking elements over a second area that partially overlaps with the first area to define an overlapping portion and a non-overlapping portion;
whereinthe second set of marking elements that printed the second set of pixels in the overlapping portion in a second intermediate layer on top of a first intermediate layer is different from the first set of marking elements that printed the first set of pixels in the overlapping portion in the first intermediate layer.
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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.
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Citations
9 Claims
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1. A method for printing a three-dimensional image including pixels in a fast scan dimension x, a slow scan dimension y, and a z dimension that is orthogonal to the x and y dimensions on a printable surface by a printhead including a plurality of marking elements, the method comprising the steps of:
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subdividing the three dimensional image into multiple two-dimensional images defining multiple two-dimensional intermediate layers parallel to the fast scan dimension x and the slow scan dimension y; and printing the intermediate layers on top of each other in the z dimension by; moving the printhead and the printable surface relative to each other in the fast scan dimension x to print a first set of pixels along the fast scan dimension x with a first set of marking elements over a first area; and subsequently printing a second set of pixels in the fast scan dimension x with a second set of marking elements over a second area that partially overlaps with the first area to define an overlapping portion and a non-overlapping portion;
whereinthe second set of marking elements that printed the second set of pixels in the overlapping portion in a second intermediate layer on top of a first intermediate layer is different from the first set of marking elements that printed the first set of pixels in the overlapping portion in the first intermediate layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification