US 11,904,550 B2
System for the lithography-based additive manufacturing of three-dimensional (3D) structures
Robert Gmeiner, Vienna (AT); Thomas Förster-Romswinckel, Pixendorf (AT); Philipp Neubauer, Fahrafeld (AT); Bernhard Busetti, Vienna (AT); Wolfgang Steiger, Vienna (AT); and Raphael Krobath, Breitenfurt (AT)
Assigned to CUBICURE GMBH, Vienna (AT)
Filed by Cubicure GmbH, Vienna (AT)
Filed on Jul. 12, 2022, as Appl. No. 17/862,882.
Application 17/862,882 is a division of application No. 16/725,056, filed on Dec. 23, 2019, granted, now 11,440,263.
Prior Publication US 2022/0347932 A1, Nov. 3, 2022
Int. Cl. B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B29C 64/264 (2017.01); B29C 64/227 (2017.01); B29C 64/129 (2017.01)
CPC B29C 64/393 (2017.08) [B29C 64/129 (2017.08); B29C 64/227 (2017.08); B29C 64/264 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 22 Claims
OG exemplary drawing
 
1. A method for three-dimensional (3D) printing, the method comprising:
in a print head, ejecting a photopolymer resin onto a carrier film of a material transport unit to create one or more material layers of the photopolymer resin on the carrier film;
driving the material transport unit to transport the one or more material layers of the photopolymer resin toward an exposure field configured to expose light from a light engine toward at least a portion of a building plane of a building platform; and
synchronizing a movement speed of the print head with a feeding rate of a pattern data feeder using a linear encoder provided on the print head, the print head being moved along a stationary linear encoder bar.