US 11,945,156 B2
Plate separating from support film for VAT photo-polymerization
Li-Han Wu, Hsinchu (TW); Chien-Hsing Tsai, Hsinchu (TW); Chao-Shun Chen, Hsinchu (TW); and Tsung-Yu Liu, Hsinchu (TW)
Assigned to YOUNG OPTICS INC., Hsinchu (TW)
Filed by Young Optics Inc., Hsinchu (TW)
Filed on Nov. 25, 2019, as Appl. No. 16/693,626.
Application 16/693,626 is a continuation of application No. 15/250,153, filed on Aug. 29, 2016, abandoned.
Application 15/250,153 is a continuation in part of application No. 15/014,811, filed on Feb. 3, 2016, granted, now 11,498,265.
Claims priority of application No. 104144282 (TW), filed on Dec. 29, 2015.
Prior Publication US 2020/0086626 A1, Mar. 19, 2020
Int. Cl. B29C 64/129 (2017.01); B29C 64/245 (2017.01); B29C 64/255 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)
CPC B29C 64/129 (2017.08) [B29C 64/245 (2017.08); B29C 64/255 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A three-dimensional printing apparatus, comprising:
a liquid tank, capable of accommodating a photosensitive liquid, the liquid tank comprising:
a film, disposed in the bottom of the liquid tank and having a workpiece curing area;
a plurality of side walls, surrounding the film; and
a plate, disposed under the film and capable of supporting the film, and the plate having at least one fluid tunnel extending from a first surface of the plate contacting the film to a second surface of the plate, wherein the plate is not flexible; and
a motor, connected to the liquid tank to incline the liquid tank;
wherein a gap is formed between the plate and one of the plurality of side walls of the liquid tank, the film is capable of communicating with an outside space via the gap, and, during separation of a cured workpiece from the film, a lowest point of the film is lower than a lowest point of the plate.