Toshiba E-STUDIO520 - Page 166

e-STUDIO520/600/720/850 LASER OPTICAL UNIT March 2005 © TOSHIBA TEC
8 - 6
c. Polygonal mirror cover
The polygonal mirror cover reduces wind damage and noise, prevents adhesion of foreign matter on
the mirror surface and releases heat by sealing the polygonal mirror.
Fig.8-5
[e-STUDIO520/600/720]
One scan is completed by completion of steps (A)
to (C). One scan is performed on one plane of the
polygonal mirror. Eight scans can be made with
one rotation of the polygonal mirror.
[e-STUDIO850]
Two scan is completed by completion of steps
(A) to (C). Two scan is performed on one plane of
the polygonal mirror. Sixteen scans can be made
with one rotation of the polygonal mirror.
(
A
)
Drum
Laser beam
(
B
)
Drum
Laser beam
(
C
)
Drum
Laser beam
(
A
)
Drum
Laser beam
(
B
)
Drum
Laser beam
(
C
)
Drum
Laser beam