Polyjet refers to an additive manufacturing procedure used in rapid prototyping. rapid prototyping. Like stereolithography Polyjet also makes use of liquid photopolymers which harden on exposure to an ultra-violet laser. Polyjet printers possess two print heads: one responsible for dispensing the liquid photopolymer and the other which is responsible for activating the laser placed behind the container holding the liquid (the laser is required to harden the liquid in order to create the layers of the object being printed). The process is significantly less complicated compared to stereolithography due to the fact that no receptacle is required when printing the object due to the presence of the two printer heads. As a result Polyjet printers bear a closer resemblance to inkjet printers than SLA printers.
The advantages of Polyjet technology are as follows:
PolyJet technology was created for projects with a focus on precision detail and finish. Its only limitations lie in the size of the objects it produces as it is incapable of producing objects as large as those created using stereolithography.