US 11,740,453 B2
Apparatus configured to fly light-absorbing material, apparatus configured to model three-dimensional modeled object, and method of flying light-absorbing material
Hiroyuki Suhara, Kanagawa (JP); Takashi Fujita, Kanagawa (JP); Atsushi Takeuchi, Kanagawa (JP); Kohji Sakai, Tokyo (JP); Asato Tamura, Tokyo (JP); and Shohta Kobashigawa, Tokyo (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Hiroyuki Suhara, Kanagawa (JP); Takashi Fujita, Kanagawa (JP); Atsushi Takeuchi, Kanagawa (JP); Kohji Sakai, Tokyo (JP); Asato Tamura, Tokyo (JP); and Shohta Kobashigawa, Tokyo (JP)
Filed on May 29, 2020, as Appl. No. 16/887,366.
Claims priority of application No. 2019-103590 (JP), filed on Jun. 3, 2019.
Prior Publication US 2020/0379251 A1, Dec. 3, 2020
Int. Cl. G02B 26/12 (2006.01); G02F 1/11 (2006.01); G01B 11/24 (2006.01); H01S 3/067 (2006.01)
CPC G02B 26/124 (2013.01) [G01B 11/24 (2013.01); G02F 1/11 (2013.01); H01S 3/067 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus configured to fly a light-absorbing material, comprising:
a unit configured to irradiate a light-absorbing material with a laser beam, a wavelength of the laser beam corresponding to a light absorption wavelength of the light-absorbing material to fly the light-absorbing material, the laser beam being a ring-shaped beam,
the light-absorbing material being a resin, metal, ceramic or liquid, and having a viscosity of 1 pascal-second or more,
the unit being configured to
irradiate the laser beam in rows along a scanning direction, and
create beam radiation regions including a preceding beam radiation region and a following beam radiation region, based on the preceding beam radiation region and the following beam radiation region overlapping, the unit is configured to irradiate the following beam radiation region with the laser beam such that a beam centroid position is outside the preceding beam radiation region, a beam centroid position of the beam radiation regions in the second row do not overlap in a direction perpendicular to the scanning direction with a beam centroid position of adjacent beam radiation regions in the first row.