# US 11,305,490 B2 · Additive manufacturing with traversing irradiation region > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,490 B2 - Document ID: US11305490B2 - Status: Granted - Kind: B2 - Application number: 16/097,819 - Filed: 2016-07-22 - Published: 2019-05-09 - Granted: 2022-04-19 - Earliest claimed: 2016-07-22 - Assignees: Hewlett-Packard Development Company, L.P. - Applicants: Hewlett-Packard Development Company, L.P. - Inventors: Joaquim Brugue Garvi; Alejandro Manuel De Pena; Esteve Comas; Juan Manuel Valero Navazo - Web page: https://patentgrep.com/patent/US11305490B2 ## CPC - B29C 64/295: Heating elements - B29C 64/165: using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber - B29C 64/20: Apparatus for additive manufacturing; Details thereof or accessories therefor - B29C 64/227: Driving means - B29C 64/364: Conditioning of environment - B29C 64/386: Data acquisition or data processing for additive manufacturing - B29C 64/393: for controlling or regulating additive manufacturing processes - B33Y 10/00: Processes of additive manufacturing - B33Y 30/00: Apparatus for additive manufacturing; Details thereof or accessories therefor - B33Y 50/00: Data acquisition or data processing for additive manufacturing - B33Y 50/02: for controlling or regulating additive manufacturing processes - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING ## Abstract There is disclosed additive manufacturing apparatus (10), (22), (34) comprising: a heater (18), (36) to direct radiant heat onto an irradiation region (20) of a build platform (12), at least part of the heater (18), (36) being moveable to cause the irradiation region (20) to traverse over the build platform (12); a coating module (14) moveable relative the heater (18), (36) to traverse the build platform (12) to apply a build material onto the build platform (12); and a print module (16) moveable relative the heater (18), (36) to traverse the build platform (12) to selectively eject a print agent onto the build material. ## Claims ### Claim 1 Additive manufacturing apparatus comprising: a heater to direct radiant heat onto an irradiation region of a build platform, at least part of the heater being moveable to cause the irradiation region to traverse over the build platform; first and second supply zone platforms laterally adjacent to and on opposite sides of the build platform, the supply zone platforms to receive build material by conveyance from a separate reservoir; a coating module moveable relative the heater to traverse the build platform and supply zone platforms to apply the build material from the supply zone platforms onto the build platform; and a print module moveable relative the heater to traverse the build platform to selectively eject a print agent onto the build material. ### Claim 2 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater is to traverse the build platform. ### Claim 3 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein a heater element or a guide element of the heater is pivotable with respect to the build platform to cause the irradiation region to traverse over the build platform. ### Claim 4 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein a carriage comprising the print module or the coating module is moveable below the heater. ### Claim 5 (depends on 4) Additive manufacturing apparatus according to claim 4, wherein the carriage is provided with a reflector for reflecting radiant heat from the heater. ### Claim 6 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater comprises a statically mounted part and a pivotable part, the pivotable part to direct radiant heat from the statically mounted part onto the supply zone platforms adjacent to the build platform, and wherein the coating module is to apply build material from the supply zone platforms onto the build platform. ### Claim 7 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater is to direct radiant heat so that the irradiation region traverses the build platform along a first lateral axis; wherein the print module is to traverse the build platform along a direction parallel with the first lateral axis, and wherein the heater has a width along a second lateral axis orthogonal to the first lateral axis which is greater than a width of the print module so that in use the heater extends over the supply zone platforms. ### Claim 8 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater is to direct radiant heat so that the irradiation region traverses the build platform along a first lateral axis during a heating cycle; wherein a carriage comprising the print module or the coating module is to traverse the build platform along a direction parallel with the first lateral axis; and wherein the additive manufacturing apparatus further comprises a controller configured to control the heater and/or the carriage so that the heating cycle is out of phase with traversing movement of the carriage. ### Claim 9 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater is to direct radiant heat so that the irradiation region traverses the build platform along a first lateral axis; wherein a carriage comprising the print module or the coating module is to traverse the build platform along a direction parallel with the first lateral axis; and wherein the additive manufacturing apparatus further comprises a controller configured to control a heater traversal rate at which the irradiation region traverses the build platform; and wherein the controller is configured to temporarily increase the heater traversal rate for a passing phase of a heating cycle in which the carriage passes below the heater. ### Claim 10 (depends on 1) Additive manufacturing apparatus according to claim 1, wherein the heater is to direct radiant heat so that the irradiation region traverses the build platform along a first lateral axis during a heating cycle; wherein the heater is elongate along a second lateral axis orthogonal to the first lateral axis; and wherein the heater comprises a plurality of heater elements along the second lateral axis, each having a variable power output, so that the heater is for emitting radiant heat in a profile which varies along the second lateral axis. ### Claim 11 (depends on 10) Additive manufacturing apparatus according to claim 10, further comprising: a sensor to determine a temperature profile of build material on the build platform which is variable along the first and second lateral axes; a controller configured to control a power output of each heater element during a heating cycle based on an output of the sensor, so that the heater is for emitting radiant heat in a profile which varies along the first and second lateral axes. ### Claim 12 Additive manufacturing apparatus comprising: a build platform having two laterally adjacent supply zone platforms opposite one another along sides of the build platform, the build platform to receive build material from the supply zone platforms, the supply zone platforms to receive build material by conveyance from a separate reservoir; a heater to direct radiant heat to traverse the build platform and the supply zone platforms along a first lateral axis; a carriage to traverse the build platform along a direction parallel with the first lateral axis; wherein the carriage comprises a coating module to apply build material from the supply zone platforms onto the build platform or a print module to eject a print agent onto build material on the build platform; and wherein the carriage is moveable to traverse the build platform independently of the heater.