Abstract: A 3D printer is disclosed herein. The 3D printer comprises an energy source comprising solid-state emitters to selectively emit energy to a build material layer in a narrow-band of wavelengths; an agent delivery device to selectively deposit a fusing agent, a detailing agent and a reflective agent on the build material layer in respective independent patterns; and a controller. The reflective agent is to reflect substantially all of the energy at the wavelengths within the narrow-band of wavelengths. The controller is to control the agent delivery device to selectively deposit the fusing agent to a build material layer in a first pattern corresponding to a 3D object to be generated. The controller is further to control the agent delivery device to selectively deposit the detailing agent and the reflective gent to the build material layer in a second pattern and third pattern respectively.

Abstract: In an example, a data unit includes a mounting to removably mount the data unit on a receiving portion of an additive manufacturing build material container, a data source to provide data comprising a plurality of additive manufacturing parameters and a communications interface to communicate with a reader of an additive manufacturing build material processing apparatus. The communications interface is to transmit data from the data source to the additive manufacturing build material processing apparatus.

Abstract: A build material management system for a 3D printing system is described in which one or more input ports of a housing of the build material management system is to connect to one or more respective transportable containers. The transportable containers contain a volume of build material comprising 3D printed parts and a portion of non-fused build material. A pump also comprised within the housing is operable to provide a pressure differential across a conduit network of the build material management system. The pump is connected to the input port(s) by the conduit network. An air-flow caused through at least one of the one or more input ports is controlled by processing circuitry also comprised within the housing. The air-flow causes cooling within the respective transportable container. In one alternative, the housing comprises at least two input ports.

Abstract: Examples described herein relate to a method of 3D printing. In an example, at least part of a layer of build material is fused. The temperatures of the fused part of the layer are measured at different locations using respective temperature sensors. The temperature sensors are calibrated using the measured temperatures. Heating of additional layers of build material is controlled using the calibrated temperature sensors.

Abstract: An additive manufacturing build material container comprises a reservoir to hold build material and a build material outlet structure.

Abstract: A build material management system for a 3D printing system is described in which a non-fused purged build material port is to output purged non-fused build material from a build material transportation system. An emptying of substantially all non-fused build material from at least a portion of the build material transportation system to the non-fused purged build material port in response to a received purge signal is controlled by processing circuitry of the build material management system.

Abstract: There is provided a 3D printing build material container (1). The container (1) comprises a reservoir (3) and a reinforcement structure (4). The reservoir is to hold build material. The reinforcement structure is attached to the reservoir at at least one selected location. The reservoir and reinforcement structure are to permit reconfiguration of the container from a relatively flat configuration to an in-use configuration in which the reservoir is tillable with build material.

Abstract: A build material container outlet structure (100) comprises: a connector (107) comprising an interface surface (116) and an adaptor to receive a nozzle structure (202) of an external aspiration system; and a retaining structure (128) to releasably hold the nozzle structure in an engagement position with the interface surface of the connector; wherein the retaining structure comprises one or more retaining elements (118-1, 118-2, 118-3) disposed in the connector to exert an attractive magnetic biasing force on the nozzle structure of the external aspiration system to releasably hold the nozzle structure in the engagement position with the interface surface of the connector.

Abstract: There is provided a 3D printing build material container (1). The container comprises a collapsible reservoir, (3) a relatively rigid reinforcement structure (4), a build material outlet structure (13) and a gas inlet structure (14). The reservoir is to hold build material (11). The reinforcement structure is to resist collapsing of at least one reinforced portion of the reservoir. The outlet structure is to allow build material to exit the reservoir. The inlet structure is to allow a gas to enter the reservoir.

Abstract: A build material container outlet structure, and a build material nozzle structure is described. The build material container outlet structure comprises a connector to releasably connect to a nozzle structure of an external aspiration system. The outlet structure comprises an aspiration channel to aspire build material from a build material container to the nozzle structure of the external aspiration system. The outlet structure comprises a protrusion protruding from an inner wall of the aspiration channel, to extend into an end portion of a tube of the nozzle structure that is inserted into the aspiration channel and retain a valve element of the nozzle structure in an open configuration.

Abstract: A method of three-dimensional (3D) printing is provided. Print data is received, which defines patterns of at least one agent to be applied to a layer of build material. The print data is modified to add a further pattern of a detailing agent to be selectively applied to the layer of build material to generate fracture regions in a processed volume of build material.

Abstract: A build material management system for an additive manufacturing system is described in which a recovered build material tank (208) and a mixing tank (212) are provided. The recovered build material tank (208) comprises an outlet and a first build material filter (218b) for separating a gas flow from a build material flow. The mixing tank (212) comprises a second build material filter (218c). The mixing tank (212) is connected to the recovered build material tank (208) via a RBMT-to-mixer conduit (286). A controller (295) is provided to couple the second build material filter (218c) to a reduced pressure interface to transport build material from the outlet of the recovered build material tank into the mixing tank (212) via the second build material filter (218b). The controller (295) controls coupling of the first build material filter (218b) to the reduced pressure interface to transport build material from a build material source into the recovered build material tank (208).

Abstract: In an example, a data unit includes a data unit mounting having a circuitry region, a registration portion, and a retaining feature. Circuitry comprising a data source to provide at least one additive manufacturing parameter is arranged on the circuitry region of the mounting. The data unit mounting is to be removably mounted on a receiving portion of an additive manufacturing build material component, such that the registration portion is to be received in a corresponding guide portion of the receiving portion of the additive manufacturing build material component, and the retaining feature is prevent removal of the data unit from the receiving portion unless deformed. Deformation of the retaining feature to effect removal of the data unit from the receiving portion may be a permanent deformation.

Abstract: An additive-manufacturing build-material container comprises a reservoir to hold build material, a build-material outlet structure to allow build material to exit the reservoir through an outlet opening in a top portion of the reservoir, a longitudinal collection unit (313a) to collect build material from the bottom and guide the build material to the outlet opening at the top, and bottom-venting structure to admit vent gas into a bottom portion of the reservoir. The bottom-venting structure may include a vent tube to admit venting gas into the bottom portion of the reservoir. A concentric collection tube structure may be employed including the longitudinal collection tube nested within a vent tube (333A, 354A). The concentric collection tube structure may be mounted along the central axis of the reservoir.

Abstract: There is provided a 3D printing build material container (31) comprising a reinforcement structure (34), a collapsible reservoir (33) to hold build material, a build material outlet structure (313), at least one first inlet structure (314, 316), and a second inlet structure (315). The reinforcement structure encloses an airtight space and the reservoir is disposed within the reinforcement structure. The build material outlet (313) structure is to allow build material to exit the reservoir. The at least one first inlet structure (314, 316) is to allow recycled build material to enter the reservoir and to selectively allow a gas to enter the reservoir. The second inlet structure (315) is to selectively allow a gas to enter a space between the reservoir and the reinforcement structure.

Abstract: A build material management apparatus for a three dimensional printing system is provided having a plurality of conduits to connect to a respective plurality of ports of at least one build material container. Processing circuitry is provided to control coupling of a 5 pump interface to the plurality of conduits to independently set, for at least two of the plurality of conduits, a given air flow parameter for cooling build material in the at least one build material container. A build material container and machine executable instructions are also provided.

Abstract: There are disclosed methods and apparatuses for 3D printing post-processing. The methods and apparatuses provide a container for an additive manufacturing system, the container for receiving a build volume of fused and unfused build material. The container comprises a connector for connecting the container to a pressure source, and at least one air hole to allow passage of air into or out of the container. When the connector is connected to the pressure source, air flows through the container between the connector and the at least one air hole so as to remove unfused build material from the container and to help cool the volume of build material.

Abstract: An additive manufacturing particulate build material management station (306), comprising: a material management station body; a particulate build material supply conduit (382, 582) with a particulate build material supply connector (385, 585) to releasably connect to a particulate build material supply container (314) to couple flow of a fluid carrying a particulate building material supply from within the supply container (314) to the material management station body; and a station data processor (295) to read data from a data memory chip of the supply container (314) corresponding with a quantity of particulate build material associated with the supply container (314), and to control the withdrawal of particulate build material from the supply container (314) based upon the quantity of particulate build material associated with the supply container (314).

Abstract: In an example, a data unit includes a mounting to removably mount the data unit on a receiving portion of an additive manufacturing build material container, a data source to provide data comprising a plurality of additive manufacturing parameters and a communications interface to communicate with a reader of an additive manufacturing build material processing apparatus. The communications interface is to transmit data from the data source to the additive manufacturing build material processing apparatus.

Abstract: A build material container outlet structure (100) comprises: a connector (107) comprising an interface surface (116) and an adaptor to receive a nozzle structure (202) of an external aspiration system; a socket (120) recessed from the interface surface to receive a data interconnect structure (212) of the nozzle structure, the data interconnect structure comprising a data interface (213); a data contact (122) disposed in the socket to engage with the data interface of the data interconnect structure when the nozzle structure is in an engagement position; and an activation structure (124) disposed on the interface surface to engage a switch element (214) in the nozzle structure of the external aspiration system when the nozzle structure is held in the engagement position.