The present invention is a printing device using multiple inks and a printing method using thereof, and more specifically, relates to a three-dimensional printing method of a printed product with a cross-sectional pattern comprising a step of providing different inks into each partitioned spaces and applying the same pressure condition to the inks retained in the ink-receiving part, thereby extruding the inks into a single extruding port to prepare and print an extruded ink product, using the printing device comprising an ink extruding member comprising an ink-receiving part receiving the multiple inks in each partitioned space, and an ink-extruding part equipped with a single passage in which the multiple inks received in the ink-receiving part are passed together.

In one example, a system for loading a build material powder supply receptacle for a 3D printer includes a reconditioner having a container and a heater to burn unwanted residue from used build material powder in the container, to form reconditioned build material powder, a conveyor operatively connected to the reconditioner to convey used build material powder to the container, and a dispenser operatively connected to the reconditioner to dispense reconditioned build material powder from the container into the supply receptacle.

In one example, a system for loading a build material powder supply receptacle for a 3D printer includes a reconditioner having a container and a heater to burn unwanted residue from used build material powder in the container, to form reconditioned build material powder, a conveyor operatively connected to the reconditioner to convey used build material powder to the container, and a dispenser operatively connected to the reconditioner to dispense reconditioned build material powder from the container into the supply receptacle.

A printing apparatus is for printing a three-dimensional object. The apparatus includes an operative surface, an energy source for emitting at least one energy beam onto the operative surface and a powder dispensing mechanism for depositing powder onto the operative surface, the powder being adapted to be melted by the or each energy beam. The powder dispensing mechanism is configured to deposit multiple layers of powder onto the operative surface simultaneously.

A device for metering one or more powder(s) (A, B) to produce a flow (23) of powder(s) and of a carrier gas at a given volume flow rate, comprises: ⋅at least a first source (25) suitable for supplying a first flow (27) comprising a first powder (A) and a first carrier gas (G1) substantially at the given volume flow rate, ⋅a source (33) of a carrier gas suitable for supplying an adjustment carrier gas flow (35) substantially at the given volume flow rate, ⋅an outlet junction (49) for emitting said flow of powder(s) and of carrier gas, ⋅a first proportional valve (59), ⋅an adjustment proportional valve (75), and ⋅a control system (21) suitable for controlling at least the first proportional valve and the adjustment proportional valve so that the flow of powder(s) and of carrier gas has a volume flow rate substantially equal to the given volume flow rate.

A device for metering one or more powder(s) (A, B) to produce a flow (23) of powder(s) and of a carrier gas at a given volume flow rate, comprises: ⋅at least a first source (25) suitable for supplying a first flow (27) comprising a first powder (A) and a first carrier gas (G1) substantially at the given volume flow rate, ⋅a source (33) of a carrier gas suitable for supplying an adjustment carrier gas flow (35) substantially at the given volume flow rate, ⋅an outlet junction (49) for emitting said flow of powder(s) and of carrier gas, ⋅a first proportional valve (59), ⋅an adjustment proportional valve (75), and ⋅a control system (21) suitable for controlling at least the first proportional valve and the adjustment proportional valve so that the flow of powder(s) and of carrier gas has a volume flow rate substantially equal to the given volume flow rate.

A shaping device for producing a layered body by repeatedly performing a step of forming a powder layer and a step of fixing powder in at least a partial region of the powder layer includes a first liquid application unit configured to apply a first liquid including a binder for binding the powder, a second liquid application unit configured to apply a second liquid for suppressing a flow of the first liquid, and a control unit that controls the first liquid application unit and the second liquid application unit so that where the powder in a first region of the formed powder layer is to be fixed, the first liquid is applied to the first region and the second liquid is applied to a second region adjacent to the first region. The second liquid is a liquid having higher permeability to the powder layer than the first liquid.

The present disclosure relates to a system for performing an Additive Manufacturing (AM) fabrication process on a powdered material, deposited as a powder bed and forming a substrate. The system makes use of a laser for generating a laser beam, and an optical subsystem. The optical subsystem is configured to receive the laser beam and to generate an optical signal comprised of electromagnetic radiation sufficient to melt or sinter the powdered material. The optical subsystem uses a digitally controlled mask configured to pattern the optical signal as needed to melt select portions of a layer of the powdered material to form a layer of a 3D part. A power supply and at least one processor are also included for generating a plurality of different power density levels selectable based on a specific material composition, absorptivity and diameter of the powder particles, and a known thickness of the powder bed. The powdered material is used to form the 3D part in a sequential layer-by-layer process.

A three-dimensional (3D) printing method and apparatus are disclosed for freeform fabrication of metal articles. 3D printed articles are formed from a build material comprising metal powder(s), polymer(s), and solvent(s). A coagulation agent, such as a nebulized non-solvent, is disposed onto/about the build material during 3D printing to cause at least partial solidification of the build material to form a green body structure. Multiple build materials can be mixed at a variable ratio to achieve a composition gradient through the green body structure. The 3D printed green body structure can be heated to remove some or all of the polymer, solvent, and/or for debinding. The debinded green body structure can be sintered at a specific sintering temperature or over a temperature gradient, for a period of time, in accordance with the sintering properties of the particular metal powder in the debinded green body structure, to form a finished metal part.

One of the objects of the present application is to provide a technique capable of preventing the generation of excessive metallic vapor during fabrication according to an AM technique. Further, one of the objects of the present application is to provide a technique for reducing machining processing after the fabrication as much as possible or eliminating the necessity thereof. According to one aspect, an AM apparatus configured to manufacture a fabrication object is provided. This AM apparatus includes a first DED nozzle configured to fabricate a contour of a fabrication target and a second DED nozzle configured to fabricate an inner portion of the contour.