Patent ID: 8308271

Claim:
A 3D inkjet printer comprising: a medium holder configured to hold a medium having a three-dimensional shape with a surface to be printed; an inkjet head configured to discharge ink to print on the surface of the medium while the medium holder and the inkjet head relatively move; a Y-axial driving mechanism capable of moving the inkjet head along a Y-axial direction that is a main scanning direction; a Z-axial supporting mechanism that supports the medium holder so as to be movable along a Z-axial direction that is a hoisting direction perpendicular to the Y-axial direction; an X-axial driving mechanism capable of moving the Z-axial supporting mechanism along an X-axial direction perpendicular to the Y-axial direction and the Z-axial direction; a Z-axial driving mechanism capable of moving the medium holder along the Z-axial direction; the Z-axial supporting mechanism having a first side and a second side in the X-axial direction, the second side being a reverse side of the first side; the medium holder being provided on the first side of the Z-axial supporting mechanism; a plumb bob provided on the second side of the Z-axial supporting mechanism; the medium holder and the plumb bob being connected by a wire and being suspended on the Z-axial supporting mechanism by the wire; and the medium holder comprising: an A-axial driving mechanism capable of swinging the medium along an A-axial direction that is a rotational direction about a shaft disposed along the Y-axial direction; and a B-axial driving mechanism capable of rotating the medium along a B-axial direction that is a rotational direction about a shaft disposed perpendicular to the Y-axial direction.