http://www.freepatentsonline.com/y2013/0292881.html A variety of thermochromic build materials are disclosed for use in color-controlled three-dimensional

3D Printing
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#patents #3Dprinting

A variety of thermochromic build materials are disclosed for use in color-controlled three-dimensional printing. By providing materials that exhibit a final color dependent upon heat applied during a melt or extrusion process, objects can be fabricated having a user-controlled color that varies from object to object, or within a single object.