Toshiba e-STUDIO555 Service Manual page 155

[e-STUDIO555/655]
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.
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.
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[e-STUDIO755/855]
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.
7 - 7
e-STUDIO555/655/755/855
LASER OPTICAL UNIT
7