3d printer and generative manufacturing process

Abstract

Described is a 3D printer, which is configured to build up at least one three-dimensional component in layers in a construction space by forming construction material layers lying one upon the other, of particulate construction material, and selectively solidifying several adjoining construction material layers in a respective partial region thereof. The 3D printer comprises a coating devicewhich is movable in a first direction Hacross the construction space Bto supply construction material to the construction space Bin the form of a uniform construction material layer of the construction material to be solidified, a printing devicewhich is movable in a second direction Hacross the construction space B, in order to output in a controlled manner a flowable treatment agent to a partial region of a previously applied construction material layer, which treatment agent contributes to a selective solidification thereof, and a control device C, which is configured to control the coating deviceand the printing devicein such a way that they travel across the construction space Bin a way to overlap in time and/or that they, in an overlapping manner, supply construction material to the construction space Band dispense flowable treatment agent in a controlled manner to a partial region of a previously applied construction material layer, respectively.