Patent ID: 11897189
Assignee: 3D SYSTEMS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C  G  Y | IPC B  C

Claim 17:
18. A method of printing a three-dimensional article comprising:
retaining an ink in a fluid state in a container;
selectively applying energy to the ink in the container to solidify at least a portion of a first fluid layer of the ink, thereby forming a first solidified layer that defines a first cross-section of the article;
raising or lowering the first solidified layer to provide a second fluid layer of the ink at a surface of the fluid ink in the container; and
selectively applying energy to the ink in the container to solidify at least a portion of the second fluid layer of the ink, thereby forming a second solidified layer that defines a second cross-section of the article, the first cross-section and the second cross-section being bonded to one another in a z-direction,
wherein the ink comprises:
20-60 wt. % oligomeric curable material;
15-50 wt. % cyclocarbonate (meth)acrylate monomer; and
0.1-5 wt. % photoinitiator, based on the total weight of the ink,
wherein the oligomeric curable material comprises one or more ethylenically unsaturated species having a weight average molecular weight of 500-6,000;
wherein the cyclocarbonate (meth)acrylate monomer has the structure of Formula (A1):, wherein R1 is selected from the group consisting of a linear or branched C1-C4 alkylene moiety;
R2 is H or CH3; and
wherein the ink, when cured, exhibits a tear strength of 30 to 200 kN/m when measured according to ASTM D624.