Three-dimensional printing apparatus
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Jun 8, 2016
filing date -
Jun 18, 2015
priority date (Note) -
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Abstract
A three-dimensional printing apparatus includes a controller to control first and second projectors that apply equal or substantially equal total amounts of optical energy. The controller performs first and second projecting operations. The first projecting operation involves simultaneously projecting first and second cross-sectional sub-images from the first projector onto first and second areas of an image projecting surface, respectively, and the second and third cross-sectional sub-images from the second projector onto the second and third areas of the image projecting surface, respectively. The second projecting operation involves simultaneously projecting the first cross-sectional sub-image from the first projector onto the first area and the third cross-sectional sub-image from the second projector onto the third area. The controller equalizes the number of times the first to third cross-sectional sub-images are to be respectively projected onto the first to third areas.
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