3D printing device, and method for preparing 3D printed structure

A method of producing a 3D printed structure, the method comprising the following steps:

• (A) providing a 3D printing device comprising:
• a curing system;
• a curing pattern player;
• a flat curing surface with de-wettability;
• and
• a receiving base capable of moving upwards and away from the flat curing surface;
• the receiving base, the flat curing surface, and the curing pattern player being successively arranged above the curing system;
• (B) placing ink droplets on a surface of the flat curing surface with dewettability, and passing the receiving base through the ink droplets such that a lower end surface of the receiving base is brought into proximity with the flat curing surface;
• (C) causing the curing pattern player to project a curing pattern;
• (D) causing a curing medium provided by the curing system to pass through the curing pattern, so that the ink droplets filled between the flat curing surface and the receiving base are cured, forming a cured layer with the curing pattern;
• (E) moving the receiving base upwards;
• and
• (F) causing the curing pattern player to project curing patterns that reflect the different structural layers of a target 3D printed structure, and repeating steps (D) and (E), thereby forming a 3D printed structure through a layer-by-layer growth.