Exposure - Kyocera FS-1900 Service Manual

(2) Exposure

The charged surface of the drum A is exposed to the laser beam scanning from the laser scanner
unit B.
C
The polygon motor C (with polygon mirrors) revolves (27,165 rpm) to reflect the laser beam over
the drum A. Lenses D and diversion mirror E are housed in the laser scanner unit B. These
lenses adjust the diameter of the laser beam (670 nm wavelength) so that the laser beam effectively
focalizes on the drum A surface.
D
D
Figure 4-1-5 Exposure
4-7
E
Laser beam
output
A
B
FS-1900