US 12,320,970 B2
Image forming apparatus comprising a movable mirror and operation method thereof
Nobuya Tanaka, Kanagawa (JP); and Shinichiro Sonoda, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Jun. 2, 2022, as Appl. No. 17/830,862.
Claims priority of application No. 2021-095860 (JP), filed on Jun. 8, 2021.
Prior Publication US 2022/0390739 A1, Dec. 8, 2022
Int. Cl. G02B 26/08 (2006.01); G02B 26/10 (2006.01); H04N 9/31 (2006.01)
CPC G02B 26/0833 (2013.01) [H04N 9/3135 (2013.01); H04N 9/3152 (2013.01); G02B 26/105 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a light emitting device that emits light;
a movable mirror that reflects the light emitted from the light emitting device;
a first actuator that causes the movable mirror to swing about a first axis;
a first reference signal output portion that outputs a first reference signal by estimating a point in time when a deflection angle of the movable mirror about the first axis becomes equal to a first reference angle;
a light emission controller that causes the light emitting device to emit the light based on the first reference signal output from the first reference signal output portion;
an imaging apparatus that images the light reflected by the movable mirror;
a correction portion that corrects a timing of the first reference signal output by the first reference signal output portion based on imaging information acquired by the imaging apparatus;
a second actuator that causes the movable mirror to swing about a second axis; and
a second reference signal output portion that outputs a second reference signal by estimating a point in time when a deflection angle of the movable mirror about the second axis becomes equal to a second reference angle,
wherein the correction portion corrects the timing of the first reference signal output by the first reference signal output portion and a timing of the second reference signal output by the second reference signal output portion based on the imaging information captured by the imaging apparatus.