FujiFilm CR-IR341 Service Manual page 117

C 1 2
ONTENTS
7.13 General Description of Scanning Optics System
Two laser diodes installed on the LDA08A board of the scanning optics unit irradiate red-
colored laser beams of 60 mW max./660 nm onto a six-faceted polygonal mirror.
For the laser beam scanned by the polygonal mirror in the main-scan direction, its scan start
timing is detected by the main-scan synchronization sensor of the SYN08A board to estab-
lish synchronization.
Laser irradiation
The laser beam reflected by the polygonal mirror passes through fθ lenses, and the laser
beam is irradiated by the reflective mirror onto the IP surface under the scanning optics unit.
Light-collecting guide
Laser Irradiation onto IP
009-051-04
05.31.99 FM2460
3 4 5 6
fθ lenses
Light-collecting
mirror
IP surface
CR-IR341 Service Manual
7 8 9 10
FR1H0247.EPS
Main-scan
direction
MD - 54
FR1H0248.EPS
MD - 54