Resin reservoir for photocuring for use in 3d printer and 3d printer

A photocuring 3D printer, comprising:

• a resin tank comprising:
• a tank body for containing a liquid photosensitive resin, at least one side wall of the tank body being an optically-transmissive wall;
• a transverse guide element arranged on the tank body;
• and
• a load-bearing element arranged inside the tank body and movable transversely along the guide element, wherein a load-bearing surface of the load-bearing element faces the optically-transmissive wall;
• a light source provided outside the optically-transmissive wall;
• and
• an LCD display unit having a same area as the optically-transmissive wall and covered at an outer side or an inner side of the optically-transmissive wall,
• wherein two of the guide elements are respectively arranged at upper portions of sidewalls adjacent to the optically-transmissive wall, each of the guide elements is a guide screw, and an upper portion of the load-bearing element has a nut seat configured to cooperate with the guide screw, and
• wherein a size of the optically-transmissive wall ranges from 20 inches to 120 inches.