# US 9,434,109 B2 · Three-dimensional printing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,109 B2 - Document ID: US9434109B2 - Status: Granted - Kind: B2 - Application number: 14/156,474 - Filed: 2014-01-16 - Published: 2015-05-21 - Granted: 2016-09-06 - Earliest claimed: 2013-11-18 - Assignees: XYZprinting, Inc.; Kinpo Electronics, Inc.; Cal-Comp Electronics & Communications Company Limited - Applicants: XYZprinting, Inc.; Kinpo Electronics, Inc.; Cal-Comp Electronics & Communications Company Limited - Inventors: Ming-Hsiung Ding - Web page: https://patentgrep.com/patent/US9434109B2 ## CPC - B29C 64/40: Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof - B29C 33/306: {Exchangeable mould parts, e.g. cassette moulds, mould inserts (moulds with exchangeable mould parts for injection moulding B29C45/2673; mounting of exchangeable mould inserts for injection moulding B29C45/2675)} - B29C 64/112: using individual droplets, e.g. from jetting heads - 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 - B33Y 10/00: Processes of additive manufacturing - B33Y 50/00: Data acquisition or data processing for additive manufacturing - 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 A three-dimensional printing method for forming a three-dimensional object on a base is provided. The method comprises providing a model library comprising at least one supporting member, selecting the at least one supporting member from the model library and disposing the at least one supporting member onto the base. The three-dimensional object is printed over the base and the at the least supporting member, and the three-dimensional object has an overhanging portion relative to the base and the at least one supporting member is filled between the overhanging portion and the base. ## Claims ### Claim 1 A three-dimensional printing method for forming a three-dimensional object on a base, and the three-dimensional printing method comprising: providing a model library and the model library comprises at least one supporting member; developing an iconic model of the three-dimensional object, wherein the three-dimensional object has at least one overhanging portion relative to the base; calculating a required supporting space of the overhanging portion of the iconic model relative to the base; searching for a supporting member from the at least one supporting member in the model library according to a result of calculating the required supporting space; selecting the at least one supporting member and disposing the at least one supporting member onto the base; and printing the three-dimensional object over the base and the at least one supporting member, wherein the at least one supporting member is filled between the at least one overhanging portion and the base. ### Claim 2 (depends on 1) The three-dimensional printing method according to claim 1, wherein the required supporting space is a height of the overhanging portion of the iconic model relative to the base and a height of the supporting member is less than or equal to a height of the overhanging portion of the iconic model relative to the base. ### Claim 3 (depends on 2) The three-dimensional printing method according to claim 2, further comprising: calculating an orthogonal projection contour of the overhanging portion of the iconic model onto the base; and selecting the supporting member from the at least one supporting member in the model library, wherein an orthogonal projection contour of the supporting member onto the base approaches or matches with an orthogonal projection contour of the overhanging portion onto the base, and an orthogonal projection area of the supporting member onto the base is smaller than or equal to an orthogonal projection area of the overhanging portion onto the base. ### Claim 4 (depends on 3) The three-dimensional printing method according to claim 3, the model library comprising a plurality of supporting members, and the three-dimensional printing method further comprising: selecting a plurality of supporting members from the model library, wherein an orthogonal projection contour of the plurality of supporting members onto the base approaches or matches with the orthogonal projection contour of the overhanging portion onto the base, and an orthogonal projection area of the plurality of supporting members onto the base is smaller than or equal to the orthogonal projection area of the overhanging portion onto the base. ### Claim 5 (depends on 1) The three-dimensional printing method according to claim 1, wherein the at least one supporting member is a pillar. ### Claim 6 (depends on 1) The three-dimensional printing method according to claim 1, wherein a material of the at least one supporting member is the same as that of the three-dimensional object. ### Claim 7 (depends on 1) The three-dimensional printing method according to claim 1, wherein a height of the at least one overhanging portion relative to the base is larger than a height of the at least one supporting member and the three-dimensional printing method further comprises: printing the at least one overhanging portion and a wastage portion over the at least one supporting member, and the wastage portion is removably connected to the at least one overhanging portion and the at least one supporting member. ### Claim 8 (depends on 7) The three-dimensional printing method according to claim 7, further comprising: printing a dismantling structure between the at least one supporting member and the wastage portion; and separating the wastage portion and the at least one supporting member through the dismantling structure. ### Claim 9 (depends on 8) The three-dimensional printing method according to claim 8, wherein the dismantling structure is a three-dimensional structure of line-up perforation pores. ### Claim 10 (depends on 7) The three-dimensional printing method according to claim 7, wherein a volume of the wastage portion is smaller than a volume of the at least one supporting member. ### Claim 11 (depends on 1) The three-dimensional printing method according to claim 1, further comprising: recycling the at least one supporting member to the model library.