An electrostatic coater comprising: a rotary atomizing head configured to rotate in a first direction about a rotational center axis of the rotary atomizing head and scatter paint radially outward to atomize the paint; and air ports positioned behind an outer peripheral edge of the rotary atomizing head , wherein the air ports define an elevation angle and a twisted angle relative to the rotational center axis, wherein the elevation angle of the air ports directs shaping air (SA) radially outward and the twisted angle of the air ports directs the shaping air (SA) in a second direction opposite the first direction, the air ports being configured to discharge shaping air (SA) to a front, wherein the air ports consist of only a plurality of air ports arranged at equal intervals on a single circumference coaxial with the rotational center axis of the rotary atomizing head ; wherein the air ports direct the shaping air (SA) radially outward, the shaping air (SA) is directed such that part of secondary-dispersed air of the shaping air (SA) becomes air accompanying a liquid thread of paint extending from the rotary atomizing head , and that the shaping air (SA) collides with a paint particle separated from the liquid thread of paint extending radially outward from the rotary atomizing head ; wherein the shaping air (SA) collides with the paint particle at a point apart radially outward from a tip end of the liquid thread of paint; wherein the shaping air (SA) collides with the paint particle at a vertical separation distance between 5.6 mm and 43.2 mm from the outer peripheral edge of the rotary atomizing head ; wherein the shaping air (SA) discharged from the air ports is twisted in the second direction opposite the first direction of the rotary atomizing head . a rotary atomizing head configured to rotate in a first direction about a rotational center axis of the rotary atomizing head and scatter paint radially outward to atomize the paint; and air ports positioned behind an outer peripheral edge of the rotary atomizing head , wherein the air ports define an elevation angle and a twisted angle relative to the rotational center axis, wherein the elevation angle of the air ports directs shaping air (SA) radially outward and the twisted angle of the air ports directs the shaping air (SA) in a second direction opposite the first direction, the air ports being configured to discharge shaping air (SA) to a front, wherein the air ports consist of only a plurality of air ports arranged at equal intervals on a single circumference coaxial with the rotational center axis of the rotary atomizing head ; wherein the air ports direct the shaping air (SA) radially outward, the shaping air (SA) is directed such that part of secondary-dispersed air of the shaping air (SA) becomes air accompanying a liquid thread of paint extending from the rotary atomizing head , and that the shaping air (SA) collides with a paint particle separated from the liquid thread of paint extending radially outward from the rotary atomizing head ; wherein the shaping air (SA) collides with the paint particle at a point apart radially outward from a tip end of the liquid thread of paint; wherein the shaping air (SA) collides with the paint particle at a vertical separation distance between 5.6 mm and 43.2 mm from the outer peripheral edge of the rotary atomizing head ; wherein the shaping air (SA) discharged from the air ports is twisted in the second direction opposite the first direction of the rotary atomizing head . <EOS>