SELECTIVE ABSORPTION FUSION

3D printers; industrial printing machines; industrial powder bed fusion printing machines and 3D printers; powder delivery apparatus being part of 3D printers for industrial use, namely, powder bed fusion and powder bed binder jetting apparatus; powder delivery apparatus for printing machines for the formation of three-dimensional objects from a powder bed, namely, powder bed fusion and powder bed binder jetting apparatus; powder spreading apparatus for printers and 3D printing machines, namely, rollers, blades and hoppers; additive manufacturing machines; powder applying apparatus for printing machines, namely, powder dosing systems including rotary powder delivery devices and powder hoppers