Method for manufacturing three-dimensional structure, three-dimensional structure manufacturing apparatus, ink set, and three-dimensional structure

A three-dimensional structure manufacturing apparatus for manufacturing a three-dimensional structure by stacking layers formed by discharging an ink including a curable resin and curing the layers, comprising:

• entity portion forming ink discharge means for discharging an ink for forming an entity portion to a region where a three-dimensional structure is configured;
• sacrificial layer forming ink discharge means for discharging an ink for forming a sacrificial layer for forming a sacrificial layer to a region on a surface side of an outermost layer which is adjacent to a region to become the outermost layer of the three-dimensional structure;
• curing means for curing the ink for forming an entity portion and the ink for forming a sacrificial layer;
• and
• first sacrificial layer forming ink discharge means for discharging the first ink for forming a sacrificial layer and second sacrificial layer forming ink discharge means for discharging the second ink for forming a sacrificial layer as the sacrificial layer forming ink discharge means,
• wherein the viscoelasticity of the first ink for forming a sacrificial layer at the time of curing the ink for forming an entity portion is smaller than the viscoelasticity of the ink for forming an entity portion at the time of curing the ink for forming an entity portion, and
• wherein the viscoelasticity of the second ink for forming a sacrificial layer at the time of curing the ink for forming an entity portion is greater than the viscoelasticity of the ink for forming an entity portion at the time of curing the ink for forming an entity portion.

An ink set used for manufacturing a three-dimensional structure by stacking layers formed by discharging an ink including a curable resin and curing the layers, comprising:

• an ink for forming an entity portion for applying to a region where the three-dimensional structure is configured;
• an ink for forming a sacrificial layer for forming a sacrificial layer in a region on a surface side of an outermost layer which is adjacent to a region to become the outermost layer of the three-dimensional structure;
• and
• a first ink for forming a sacrificial layer and a second ink for forming a sacrificial layer as the ink for forming a sacrificial layer,
• wherein the content of a polymerization initiator in the first ink for forming a sacrificial layer is smaller than the content of a polymerization initiator in the second ink for forming a sacrificial layer.

An ink set used for manufacturing a three-dimensional structure by stacking layers formed by discharging an ink including a curable resin and curing the layers, comprising:

• an ink for forming an entity portion for applying to a region where the three-dimensional structure is configured;
• an ink for forming a sacrificial layer for forming a sacrificial layer in a region on a surface side of an outermost layer which is adjacent to a region to become the outermost layer of the three-dimensional structure;
• and
• a first ink for forming a sacrificial layer and a second ink for forming a sacrificial layer as the ink for forming a sacrificial layer,
• wherein the viscoelasticity of the first ink for forming a sacrificial layer at the time of curing the ink for forming an entity portion is smaller than the viscoelasticity of the ink for forming an entity portion at the time of curing the ink for forming an entity portion, and
• wherein the viscoelasticity of the second ink for forming a sacrificial layer at the time of curing the ink for forming an entity portion is greater than the viscoelasticity of the ink for forming an entity portion at the time of curing the ink for forming an entity portion.