There are many existing technologies to produce 3D parts by means of “digital systems”. These
systems are often referred to 3D printers or additive manufacturing technologies, and parts are built
by adding successive layers of material (liquid, powder, or sheet material) from a series of cross
sections, that are joined together or automatically fused to create the final shape.
In some 3D printers, IR lamps are used to fuse the parts. To make the system more efficient, these
lamps use a combined reflector to maximize the radiation that is being delivered to the printed parts.
However, the aim of maximizing the system efficiency requires a large surface reflector. As it is
explained in the next section, that produces a negative effect, affecting the temperature of the printed
parts, and producing a negative impact in part quality
A new concept consisting of a parabolic reflector and a honeycomb to eliminate the effect of back
reflection on to the printed parts, allowing a much better temperature control and improving the
robustness, in terms of part quality, of all printed elements.
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INC, HP, "THE USE OF A HONEYCOMB TO ELIMINATE THE IMPACT OF BACK REFLECTION", Technical Disclosure Commons, (July 18, 2019)