A stereolithography device having a trough (2) for accommodating free-flowing, photopolymerizable material, a construction platform (4) suspended above the trough bottom on a lifting unit (6), and having a heating unit for heating the photopolymerizable material in the trough. The heating unit has a transparent, electrically conductive layer (33), which covers the entire area of at least the exposure region above the trough bottom, and which is provided outside the exposure region on opposing sides of the layer with electrical contacts (20) extended over the opposing sides, which are connected to a controlled electrical supplier to enable heating of the entire area of photopolymerizable material above the trough bottom in the exposure region by current flow through the layer.

Systems and methods for constructing 3-dimensional (3D) parts are disclosed. A printing system may include a deposition system configured to print a plurality of 2-dimensional (2D) layers onto a plurality of carrier sheets. The printing system also includes a transferring system configured to transfer a 2D layer from a carrier sheet of the plurality of carrier sheets, onto the 3D part. The 3D part may be located on a base substrate. The printing system further includes a feed system configured to provide the plurality of carrier sheets from the deposition system to the transfer system in a successive fashion while maintaining the directionality of printing in the deposition and transferring systems.

Systems and methods for constructing 3-dimensional (3D) parts are disclosed. A printing system may include a deposition system configured to print a plurality of 2-dimensional (2D) layers onto a plurality of carrier sheets. The printing system also includes a transferring system configured to transfer a 2D layer from a carrier sheet of the plurality of carrier sheets, onto the 3D part. The 3D part may be located on a base substrate. The printing system further includes a feed system configured to provide the plurality of carrier sheets from the deposition system to the transfer system in a successive fashion while maintaining the directionality of printing in the deposition and transferring systems.

A device for producing a three-dimensional shaped object, including a substrate part having a base surface for holding the shaped object, a first reservoir for holding a flowable first material, a second reservoir for holding a flowable second material, a dispensing mechanism for dispensing material portions of the first material, a material application mechanism including an application roll and a coating mechanism for applying a second material layer of the second material, and a fixation mechanism for solidifying the material layers composed of the first material and the second material. The transfer body rotates about an axis of rotation disposed parallel to the base surface, the dispensing mechanism and the application roll r relative to the substrate part about an axis disposed normal to the base surface, the application roll is conical, and an axis of rotation of the application roll intersects the axis disposed normal to the base surface.

A method of depositing powder in an additive manufacturing system includes driving a recoater along a drive axis and oscillating the recoater along an oscillation axis. The recoater is oscillated while the recoater is driven along the drive axis to overcome the effect of one or more particle movement restriction mechanisms for smoothing powder deposited in a build chamber of an additive manufacturing system.

A powder-deposition apparatus for an additive manufacturing system includes a recoater, a mixer, and a powder feeder. The recoater is configured to discharge powder such that a powder layer is formed from the powder. The mixer is configured to mix a plurality of powder constituents to produce the powder and to dispense the powder to the recoater. The powder feeder is configured to selectively dispense a mass of each one of the plurality of powder constituents to the mixer such that a composition of the powder is selectively controlled.

A system for recoating a powder bed includes a build platform holding a powder bed and an electrode assembly including an electrode and an insulating shield. A voltage supply produces a high voltage alternating current and communicates with the powder bed and the electrode. The electrode assembly is positionable over the powder bed, such that when the electrode assembly is over the powder bed, the shield is between the electrode and the powder bed's top surface. The voltage supply produces a high voltage alternating current that creates an alternating electric field between the electrode and the powder bed that causes the powder of the powder bed top surface to oscillate in a region between the shield and the bed and then reposition themselves on the bed such that the top layer of the powder bed is smoother than it was prior to when the powder particles began oscillating.

A control system for a three-dimensional printer includes an energy component interface, an agent depositing component interface, and control logic. The control logic controls the operation of an energy component through the energy component interface and an agent depositing component through the agent depositing component, in forming an output object that is specified in a print job. Additionally, in some examples, the control logic can implement a plurality of modes. Each mode, when selected modulate one or more operational parameters of a least one of the energy component or agent depositing component.

A control system for a three-dimensional printer includes an energy component interface, an agent depositing component interface, and control logic. The control logic controls the operation of an energy component through the energy component interface and an agent depositing component through the agent depositing component, in forming an output object that is specified in a print job. Additionally, in some examples, the control logic can implement a plurality of modes. Each mode, when selected modulate one or more operational parameters of a least one of the energy component or agent depositing component.

A supply of build material such as a spool or cartridge is instrumented with a data tag that includes information about the build material. A three-dimensional printer, or a tag reader in communication therewith (directly or indirectly), can read the information from the tag for a determination as to how to use the build material during fabrication of a three-dimensional object.