US 12,454,095 B2
Three-dimensional printing with reciprocal feeding of polymerizable liquid
Alexander Ermoshkin, Pittsboro, NC (US); David Shirvanyants, Chapel Hill, NC (US); Nordstrom Kirk Phelps, San Carlos, CA (US); Nikita Ermoshkin, Pittsboro, NC (US); Edward T. Samulski, Chapel Hill, NC (US); and Joseph M. DeSimone, Monte Sereno, CA (US)
Assigned to Carbon, Inc., Redwood City, CA (US)
Filed by Carbon, Inc., Redwood City, CA (US)
Filed on Aug. 29, 2023, as Appl. No. 18/239,317.
Application 18/239,317 is a continuation of application No. 17/730,589, filed on Apr. 27, 2022, granted, now 11,772,324.
Application 17/730,589 is a continuation of application No. 16/571,865, filed on Sep. 16, 2019, granted, now 11,400,698, issued on Aug. 2, 2022.
Application 16/571,865 is a continuation of application No. 15/314,332, granted, now 10,471,699, issued on Nov. 12, 2019, previously published as PCT/US2015/036444, filed on Jun. 18, 2015.
Claims priority of provisional application 62/117,640, filed on Feb. 18, 2015.
Claims priority of provisional application 62/035,643, filed on Aug. 11, 2014.
Claims priority of provisional application 62/015,119, filed on Jun. 20, 2014.
Prior Publication US 2024/0051222 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 64/124 (2017.01); B29C 64/232 (2017.01); B29C 64/255 (2017.01); B29C 64/264 (2017.01); B29C 64/393 (2017.01); B29K 105/00 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 64/124 (2017.08) [B29C 64/232 (2017.08); B29C 64/255 (2017.08); B29C 64/264 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B29K 2105/0058 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of forming a three-dimensional object, comprising:
providing a carrier and an optically transparent semipermeable member having a build surface, said carrier and said build surface defining a build region therebetween, with said build surface in fluid communication by way of said semipermeable member with a source of polymerization inhibitor;
filling said build region with a polymerizable liquid;
continuously or intermittently irradiating said build region through said optically transparent semipermeable member to form a solid polymer in said build region, while forming or maintaining a liquid film release layer comprised of said polymerizable liquid between said solid polymer and said build surface, wherein polymerization of said liquid film release layer is inhibited by said polymerization inhibitor;
continuously or intermittently advancing said carrier away from said build surface to form said three-dimensional object from said solid polymer;
said filling step further comprising vertically reciprocating said carrier with respect to said build surface to enhance or speed the refilling of said build region with said polymerizable liquid,
wherein a gradient of polymerizable liquid is formed or maintained as an interphase between said liquid film release layer and said solid polymer and in contact with each thereof, said gradient of polymerizable liquid comprising said polymerizable liquid in partially cured form, and
wherein said liquid release layer is continuously maintained by feeding an inhibitor of polymerization through said optically transparent member.