Two-dimensional image-forming apparatus, three-dimensional fabrication apparatus, two-dimensional image-forming method and three-dimensional fabrication method

A three-dimensional shaping apparatus comprising:

• a head unit containing a discharge part including a plurality of linearly arranged discharge nozzles and a smoothing part, the discharge part being configured to discharge an image formation material toward a stage from the discharge nozzles, and the smoothing part comprising a roller;
• a main scanning direction movement part including a guide member configured to guide movement of at least one of the head unit and the stage in a main scanning direction orthogonal to an arrangement direction of the discharge nozzles, the main scanning direction movement part being configured to relatively move the discharge part with respect to the stage along the guide member;
• a rotation part configured to rotate at least one of the guide member and the stage in a plane parallel to the stage to change a relative rotation position of the main scanning direction and the stage;
• a height direction movement part configured to move the stage in a height direction, wherein a three-dimensional object is shaped by sequentially forming a two-dimensional image on a shaping surface on the stage with the image formation material discharged from the discharge nozzles and by laminating the two-dimensional image in the height direction;
• and
• a control part configured to control the head unit, the main scanning direction movement part, the rotation part, and the height direction movement part
• wherein when forming a two-dimensional image on the stage with the image formation material discharged from the discharge nozzles, the control part:
• determines a minimal rotation for the rotation part to continuously position the relative position of the main scanning direction and the stage such that during discharge of the image formation material, the main scanning direction is parallel to each line segment of the two-dimensional image being formed,
• discharges the image formation material toward the stage through one of the plurality of linearly arranged discharge nozzles while the rotation part is continuously positioned according to the determined minimal rotation, and
• smooths the formed material using the smoothing part,
• wherein each formed line segment in the two-dimensional image has a uniformized width.