US 12,257,774 B2
Three-dimensional object printing apparatus and three-dimensional object printing method
Masaru Kumagai, Shiojiri (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jun. 27, 2021, as Appl. No. 17/304,846.
Claims priority of application No. 2020-111314 (JP), filed on Jun. 29, 2020.
Prior Publication US 2021/0402686 A1, Dec. 30, 2021
Int. Cl. B33Y 10/00 (2015.01); B05B 1/20 (2006.01); B05B 1/30 (2006.01); B05B 9/03 (2006.01); B05B 12/12 (2006.01); B05B 13/04 (2006.01); B05B 17/00 (2006.01); B05B 17/06 (2006.01); B29C 64/112 (2017.01); B29C 64/209 (2017.01); B29C 64/393 (2017.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B41J 3/407 (2006.01)
CPC B29C 64/209 (2017.08) [B05B 1/205 (2013.01); B05B 1/3006 (2013.01); B05B 9/03 (2013.01); B05B 12/124 (2013.01); B05B 13/0431 (2013.01); B05B 17/0646 (2013.01); B05B 17/0676 (2013.01); B29C 64/112 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B41J 3/4073 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A three-dimensional object printing apparatus comprising:
a liquid discharge head having a nozzle surface on which a plurality of nozzles which discharge a liquid are provided; and
a moving mechanism that changes a position and a pose of the liquid discharge head relative to a three-dimensional workpiece, wherein
the workpiece has a first surface and a second surface that forms a corner bent or curved in a concave shape between the first surface and the second surface, and
when (i) an axis along a scanning direction in which the liquid discharge head is moved with respect to the workpiece in a first printing operation of performing printing on the first surface is a first scanning axis, (ii) the nozzle surface is inclined with respect to the first scanning axis, and (iii) a normal vector of the nozzle surface in the first printing operation is a first discharge vector, the first discharge vector of th nozzle surface has a component in a direction toward the second surface along the first scanning axis, the direction of the component of the first discharge vector being parallel to the first surface, and
the nozzle surface is inclined with respect to the first surface in the first printing operation and is also inclined with respect to the second surface in a second printing operation of performing printing on the second surface.