Optical Path - Ricoh J-P3 Service Manual

LASER EXPOSURE

6.3.2 OPTICAL PATH

The laser beams for cyan [A] and yellow [B] are directed to the upper part of the
polygon mirror [C], and those for magenta [D] and black [E] are directed to the
lower part of the polygon mirror. The LD mirrors (see the previous page) deflect the
laser beams for magenta and black towards the lower polygon mirror.
The WTL [F] corrects the main scan line; without this component, the line bends
out towards the middle of the main scan. The central bend of the WTL is adjusted
in the factory.
The speed of the polygon mirror depends on the selected mode (see below).
Mode
B/W (except
OHP/Thick
paper)
Color (except
OHP/Thick
paper)
OHP/Thick
[E]
Resolution Polygon motor
(dpi) speed (rpm)
600 x 600
1,200 x 600
1,200 x 1,200
600 x 600
1,200 x 600
1,200 x 1,200
600 x 600
1,200 x 600
1,200 x 1,200
[B]
[F]
Process line
speed (mm/s)
38,273
29,528 62.5
38,273
29,528 62.5
29,528 62.5
6-8
20 February 2004
[C]
[A]
G106D915.WMF
Print speed
(ppm)
162 35
14
162 35
14
10
[D]