Optical Path - Ricoh G104 Service Manual

6.4.2 OPTICAL PATH

[A]
The laser beams for cyan [B] and magenta [D] are sent to the upper part of the
polygon mirror [C]. The laser beams for yellow [A] and black [E] are sent to the
lower part of the polygon mirror. The LD mirrors (see the previous page) reflect the
laser beams for yellow and black to the lower polygon mirror.
The mirror [F] corrects the main scan line. Without this mirror, the line bends at the
middle of the main scan. The central bend of the mirror is adjusted in the factory.
The speed of the polygon mirror is controlled by the selected mode (see below).
Mode
B/W
(except OHP/Thick
paper)
Color
(except OHP/Thick
paper)
OHP/Thick
SM
CÓPIA NÃO CONTROLADA
[B]
[C]
[F]
Resolution Polygon motor
(dpi) speed (rpm)
600 x 600
36614
1,200 x 600
1,200 x 1,200 36614
600 x 600
36614
1,200 x 600
1,200 x 1,200 36614
600 x 600
1,200 x 600 36614
1,200 x 1,200
6-27
CÓPIA NÃO CONTROLADA
LASER EXPOSURE
[D]
[E]
Process line
speed (mm/s)
155
77.5
155
77.5
77.5
G105D132.WMF
Print speed
(ppm)
25
12.5
25
12.5
12.5
G104